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7. The CODATwins Project: The Current Status and Recent Findings of COllaborative Project of Development of Anthropometrical Measures in Twins

Author

Silventoinen, K., Jelenkovic, A., Yokoyama, Y., Sund, R., Sugawara, M., Tanaka, M., Matsumoto, S., Bogl, L. H., Freitas, D. L., Maia, J. A., Hjelmborg, J. v. B., Aaltonen, S., Piirtola, M., Latvala, A., Calais-Ferreira, L., Oliveira, V. C., Ferreira, P. H., Ji, F., Ning, F., Pang, Z., Ordonana, J. R., Sanchez-Romera, J. F., Colodro-Conde, L., Burt, S. A., Klump, K. L., Martin, N. G., Medland, S. E., Montgomery, G. W., Kandler, C., McAdams, T. A., Eley, T. C., Gregory, A. M., Saudino, K. J., Dubois, L., Boivin, M., Brendgen, M., Dionne, G., Vitaro, F., Tarnoki, A. D., Tarnoki, D. L., Haworth, C. M. A., Plomin, R., Oncel, S. Y., Aliev, F., Medda, E., Nistico, L., Toccaceli, V., Craig, J. M., Saffery, R., Siribaddana, S. H., Hotopf, M., Sumathipala, A., Rijsdijk, F., Jeong, H. -U., Spector, T., Mangino, M., Lachance, G., Gatz, M., Butler, D. A., Gao, W., Yu, C., Li, L., Bayasgalan, G., Narandalai, D., Harden, K. P., Tucker-Drob, E. M., Christensen, K., Skytthe, A., Kyvik, K. O., Derom, C. A., Vlietinck, R. F., Loos, R. J. F., Cozen, W., Hwang, A. E., Mack, T. M., He, M., Ding, X., Silberg, J. L., Maes, H. H., Cutler, T. L., Hopper, J. L., Magnusson, P. K. E., Pedersen, N. L., Dahl Aslan, A. K., Baker, L. A., Tuvblad, C., Bjerregaard-Andersen, M., Beck-Nielsen, H., Sodemann, M., Ullemar, V., Almqvist, C., Tan, Q., Zhang, D., Swan, G. E., Krasnow, R., Jang, K. L., Knafo-Noam, A., Mankuta, D., Abramson, L., Lichtenstein, P., Krueger, R. F., McGue, M., Pahlen, S., Tynelius, P., Rasmussen, F., Duncan, G. E., Buchwald, D., Corley, R. P., Huibregtse, B. M., Nelson, T. L., Whitfield, K. E., Franz, C. E., Kremen, W. S., Lyons, M. J., Ooki, S., Brandt, I., Nilsen, T. S., Harris, J. R., Sung, J., Park, H. A., Lee, J., Lee, S. J., Willemsen, G., Bartels, M., Van Beijsterveldt, C. E. M., Llewellyn, C. H., Fisher, A., Rebato, E., Busjahn, A., Tomizawa, R., Inui, F., Watanabe, M., Honda, C., Sakai, N., Hur, Y. -M., Sørensen, T. I. A., Boomsma, D. I., Kaprio, J., Silventoinen, K., Jelenkovic, A., Yokoyama, Y., Sund, R., Sugawara, M., Tanaka, M., Matsumoto, S., Bogl, L. H., Freitas, D. L., Maia, J. A., Hjelmborg, J. v. B., Aaltonen, S., Piirtola, M., Latvala, A., Calais-Ferreira, L., Oliveira, V. C., Ferreira, P. H., Ji, F., Ning, F., Pang, Z., Ordonana, J. R., Sanchez-Romera, J. F., Colodro-Conde, L., Burt, S. A., Klump, K. L., Martin, N. G., Medland, S. E., Montgomery, G. W., Kandler, C., McAdams, T. A., Eley, T. C., Gregory, A. M., Saudino, K. J., Dubois, L., Boivin, M., Brendgen, M., Dionne, G., Vitaro, F., Tarnoki, A. D., Tarnoki, D. L., Haworth, C. M. A., Plomin, R., Oncel, S. Y., Aliev, F., Medda, E., Nistico, L., Toccaceli, V., Craig, J. M., Saffery, R., Siribaddana, S. H., Hotopf, M., Sumathipala, A., Rijsdijk, F., Jeong, H. -U., Spector, T., Mangino, M., Lachance, G., Gatz, M., Butler, D. A., Gao, W., Yu, C., Li, L., Bayasgalan, G., Narandalai, D., Harden, K. P., Tucker-Drob, E. M., Christensen, K., Skytthe, A., Kyvik, K. O., Derom, C. A., Vlietinck, R. F., Loos, R. J. F., Cozen, W., Hwang, A. E., Mack, T. M., He, M., Ding, X., Silberg, J. L., Maes, H. H., Cutler, T. L., Hopper, J. L., Magnusson, P. K. E., Pedersen, N. L., Dahl Aslan, A. K., Baker, L. A., Tuvblad, C., Bjerregaard-Andersen, M., Beck-Nielsen, H., Sodemann, M., Ullemar, V., Almqvist, C., Tan, Q., Zhang, D., Swan, G. E., Krasnow, R., Jang, K. L., Knafo-Noam, A., Mankuta, D., Abramson, L., Lichtenstein, P., Krueger, R. F., McGue, M., Pahlen, S., Tynelius, P., Rasmussen, F., Duncan, G. E., Buchwald, D., Corley, R. P., Huibregtse, B. M., Nelson, T. L., Whitfield, K. E., Franz, C. E., Kremen, W. S., Lyons, M. J., Ooki, S., Brandt, I., Nilsen, T. S., Harris, J. R., Sung, J., Park, H. A., Lee, J., Lee, S. J., Willemsen, G., Bartels, M., Van Beijsterveldt, C. E. M., Llewellyn, C. H., Fisher, A., Rebato, E., Busjahn, A., Tomizawa, R., Inui, F., Watanabe, M., Honda, C., Sakai, N., Hur, Y. -M., Sørensen, T. I. A., Boomsma, D. I., and Kaprio, J.

Published
2019

8. The CODATwins Project: The Current Status and Recent Findings of COllaborative Project of Development of Anthropometrical Measures in Twins

Author

Silventoinen, K, Jelenkovic, A, Yokoyama, Y, Sund, R, Sugawara, M, Tanaka, M, Matsumoto, S, Bogl, L H, Freitas, D L, Maia, J A, Hjelmborg, J V B, Aaltonen, S, Piirtola, M, Latvala, A, Calais-Ferreira, L, Oliveira, V C, Ferreira, P H, Ji, F, Ning, F, Pang, Z, Ordoñana, J R, Sánchez-Romera, J F, Colodro-Conde, L, Burt, S A, Klump, K L, Martin, N G, Medland, S E, Montgomery, G W, Kandler, C, McAdams, T A, Eley, T C, Gregory, A M, Saudino, K J, Dubois, L, Boivin, M, Brendgen, M, Dionne, G, Vitaro, F, Tarnoki, A D, Tarnoki, D L, Haworth, C M A, Plomin, R, Öncel, S Y, Aliev, F, Medda, E, Nisticò, L, Toccaceli, V, Craig, J M, Saffery, R, Siribaddana, S H, Hotopf, M, Sumathipala, A, Rijsdijk, F, Jeong, H-U, Spector, T, Mangino, M, Lachance, G, Gatz, M, Butler, D A, Gao, W, Yu, C, Li, L, Bayasgalan, G, Narandalai, D, Harden, K P, Tucker-Drob, E M, Christensen, K, Skytthe, A, Kyvik, K O, Derom, C A, Vlietinck, R F, Loos, R J F, Cozen, W, Hwang, A E, Mack, T M, He, M, Ding, X, Silberg, J L, Maes, H H, Cutler, T L, Hopper, J L, Magnusson, P K E, Pedersen, N L, Dahl Aslan, A K, Baker, L A, Tuvblad, C, Bjerregaard-Andersen, M, Beck-Nielsen, H, Sodemann, M, Ullemar, V, Almqvist, C, Tan, Q, Zhang, D, Swan, G E, Krasnow, R, Jang, K L, Knafo-Noam, A, Mankuta, D, Abramson, L, Lichtenstein, P, Krueger, R F, McGue, M, Pahlen, S, Tynelius, P, Rasmussen, F, Duncan, G E, Buchwald, D, Corley, R P, Huibregtse, B M, Nelson, T L, Whitfield, K E, Franz, C E, Kremen, W S, Lyons, M J, Ooki, S, Brandt, I, Nilsen, T S, Harris, J R, Sung, J, Park, H A, Lee, J, Lee, S J, Willemsen, Gonneke, Bartels, Meike, van Beijsterveldt, C.E.M., Llewellyn, C H, Fisher, A, Rebato, E, Busjahn, A, Tomizawa, R, Inui, F, Watanabe, M, Honda, C, Sakai, N, Hur, Y-M, Sørensen, T I A, Boomsma, D.I., Kaprio, J, Silventoinen, K, Jelenkovic, A, Yokoyama, Y, Sund, R, Sugawara, M, Tanaka, M, Matsumoto, S, Bogl, L H, Freitas, D L, Maia, J A, Hjelmborg, J V B, Aaltonen, S, Piirtola, M, Latvala, A, Calais-Ferreira, L, Oliveira, V C, Ferreira, P H, Ji, F, Ning, F, Pang, Z, Ordoñana, J R, Sánchez-Romera, J F, Colodro-Conde, L, Burt, S A, Klump, K L, Martin, N G, Medland, S E, Montgomery, G W, Kandler, C, McAdams, T A, Eley, T C, Gregory, A M, Saudino, K J, Dubois, L, Boivin, M, Brendgen, M, Dionne, G, Vitaro, F, Tarnoki, A D, Tarnoki, D L, Haworth, C M A, Plomin, R, Öncel, S Y, Aliev, F, Medda, E, Nisticò, L, Toccaceli, V, Craig, J M, Saffery, R, Siribaddana, S H, Hotopf, M, Sumathipala, A, Rijsdijk, F, Jeong, H-U, Spector, T, Mangino, M, Lachance, G, Gatz, M, Butler, D A, Gao, W, Yu, C, Li, L, Bayasgalan, G, Narandalai, D, Harden, K P, Tucker-Drob, E M, Christensen, K, Skytthe, A, Kyvik, K O, Derom, C A, Vlietinck, R F, Loos, R J F, Cozen, W, Hwang, A E, Mack, T M, He, M, Ding, X, Silberg, J L, Maes, H H, Cutler, T L, Hopper, J L, Magnusson, P K E, Pedersen, N L, Dahl Aslan, A K, Baker, L A, Tuvblad, C, Bjerregaard-Andersen, M, Beck-Nielsen, H, Sodemann, M, Ullemar, V, Almqvist, C, Tan, Q, Zhang, D, Swan, G E, Krasnow, R, Jang, K L, Knafo-Noam, A, Mankuta, D, Abramson, L, Lichtenstein, P, Krueger, R F, McGue, M, Pahlen, S, Tynelius, P, Rasmussen, F, Duncan, G E, Buchwald, D, Corley, R P, Huibregtse, B M, Nelson, T L, Whitfield, K E, Franz, C E, Kremen, W S, Lyons, M J, Ooki, S, Brandt, I, Nilsen, T S, Harris, J R, Sung, J, Park, H A, Lee, J, Lee, S J, Willemsen, Gonneke, Bartels, Meike, van Beijsterveldt, C.E.M., Llewellyn, C H, Fisher, A, Rebato, E, Busjahn, A, Tomizawa, R, Inui, F, Watanabe, M, Honda, C, Sakai, N, Hur, Y-M, Sørensen, T I A, Boomsma, D.I., and Kaprio, J

Abstract

The COllaborative project of Development of Anthropometrical measures in Twins (CODATwins) project is a large international collaborative effort to analyze individual-level phenotype data from twins in multiple cohorts from different environments. The main objective is to study factors that modify genetic and environmental variation of height, body mass index (BMI, kg/m2) and size at birth, and additionally to address other research questions such as long-term consequences of birth size. The project started in 2013 and is open to all twin projects in the world having height and weight measures on twins with information on zygosity. Thus far, 54 twin projects from 24 countries have provided individual-level data. The CODATwins database includes 489,981 twin individuals (228,635 complete twin pairs). Since many twin cohorts have collected longitudinal data, there is a total of 1,049,785 height and weight observations. For many cohorts, we also have information on birth weight and length, own smoking behavior and own or parental education. We found that the heritability estimates of height and BMI systematically changed from infancy to old age. Remarkably, only minor differences in the heritability estimates were found across cultural-geographic regions, measurement time and birth cohort for height and BMI. In addition to genetic epidemiological studies, we looked at associations of height and BMI with education, birth weight and smoking status. Within-family analyses examined differences within same-sex and opposite-sex dizygotic twins in birth size and later development. The CODATwins project demonstrates the feasibility and value of international collaboration to address gene-by-exposure interactions that require large sample sizes and address the effects of different exposures across time, geographical regions and socioeconomic status.

Published
2019
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9. The CODATwins Project: The Current Status and Recent Findings of COllaborative Project of Development of Anthropometrical Measures in Twins

Author

Silventoinen, K., primary, Jelenkovic, A., additional, Yokoyama, Y., additional, Sund, R., additional, Sugawara, M., additional, Tanaka, M., additional, Matsumoto, S., additional, Bogl, L. H., additional, Freitas, D. L., additional, Maia, J. A., additional, Hjelmborg, J. v. B., additional, Aaltonen, S., additional, Piirtola, M., additional, Latvala, A., additional, Calais-Ferreira, L., additional, Oliveira, V. C., additional, Ferreira, P. H., additional, Ji, F., additional, Ning, F., additional, Pang, Z., additional, Ordoñana, J. R., additional, Sánchez-Romera, J. F., additional, Colodro-Conde, L., additional, Burt, S. A., additional, Klump, K. L., additional, Martin, N. G., additional, Medland, S. E., additional, Montgomery, G. W., additional, Kandler, C., additional, McAdams, T. A., additional, Eley, T. C., additional, Gregory, A. M., additional, Saudino, K. J., additional, Dubois, L., additional, Boivin, M., additional, Brendgen, M., additional, Dionne, G., additional, Vitaro, F., additional, Tarnoki, A. D., additional, Tarnoki, D. L., additional, Haworth, C. M. A., additional, Plomin, R., additional, Öncel, S. Y., additional, Aliev, F., additional, Medda, E., additional, Nisticò, L., additional, Toccaceli, V., additional, Craig, J. M., additional, Saffery, R., additional, Siribaddana, S. H., additional, Hotopf, M., additional, Sumathipala, A., additional, Rijsdijk, F., additional, Jeong, H.-U., additional, Spector, T., additional, Mangino, M., additional, Lachance, G., additional, Gatz, M., additional, Butler, D. A., additional, Gao, W., additional, Yu, C., additional, Li, L., additional, Bayasgalan, G., additional, Narandalai, D., additional, Harden, K. P., additional, Tucker-Drob, E. M., additional, Christensen, K., additional, Skytthe, A., additional, Kyvik, K. O., additional, Derom, C. A., additional, Vlietinck, R. F., additional, Loos, R. J. F., additional, Cozen, W., additional, Hwang, A. E., additional, Mack, T. M., additional, He, M., additional, Ding, X., additional, Silberg, J. L., additional, Maes, H. H., additional, Cutler, T. L., additional, Hopper, J. L., additional, Magnusson, P. K. E., additional, Pedersen, N. L., additional, Dahl Aslan, A. K., additional, Baker, L. A., additional, Tuvblad, C., additional, Bjerregaard-Andersen, M., additional, Beck-Nielsen, H., additional, Sodemann, M., additional, Ullemar, V., additional, Almqvist, C., additional, Tan, Q., additional, Zhang, D., additional, Swan, G. E., additional, Krasnow, R., additional, Jang, K. L., additional, Knafo-Noam, A., additional, Mankuta, D., additional, Abramson, L., additional, Lichtenstein, P., additional, Krueger, R. F., additional, McGue, M., additional, Pahlen, S., additional, Tynelius, P., additional, Rasmussen, F., additional, Duncan, G. E., additional, Buchwald, D., additional, Corley, R. P., additional, Huibregtse, B. M., additional, Nelson, T. L., additional, Whitfield, K. E., additional, Franz, C. E., additional, Kremen, W. S., additional, Lyons, M. J., additional, Ooki, S., additional, Brandt, I., additional, Nilsen, T. S., additional, Harris, J. R., additional, Sung, J., additional, Park, H. A., additional, Lee, J., additional, Lee, S. J., additional, Willemsen, G., additional, Bartels, M., additional, van Beijsterveldt, C. E. M., additional, Llewellyn, C. H., additional, Fisher, A., additional, Rebato, E., additional, Busjahn, A., additional, Tomizawa, R., additional, Inui, F., additional, Watanabe, M., additional, Honda, C., additional, Sakai, N., additional, Hur, Y.-M., additional, Sørensen, T. I. A., additional, Boomsma, D. I., additional, and Kaprio, J., additional

Published
2019
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14. Does the sex of one's co-twin affect height and BMI in adulthood? A study of dizygotic adult twins from 31 cohorts

Author

Bogl, LH, Jelenkovic, A, Vuoksimaa, E, Ahrenfeldt, L, Pietilainen, KH, Stazi, MA, Fagnani, C, D'Ippolito, C, Hur, Y-M, Jeong, H-U, Silberg, JL, Eaves, LJ, Maes, HH, Bayasgalan, G, Narandalai, D, Cutler, TL, Kandler, C, Jang, KL, Christensen, K, Skytthe, A, Kyvik, KO, Cozen, W, Hwang, AE, Mack, TM, Derom, CA, Vlietinck, RF, Nelson, TL, Whitfield, KE, Corley, RP, Huibregtse, BM, McAdams, TA, Eley, TC, Gregory, AM, Krueger, RF, Mcgue, M, Pahlen, S, Willemsen, G, Bartels, M, van Beijsterveldt, TCEM, Pang, Z, Tan, Q, Zhang, D, Martin, NG, Medland, SE, Montgomery, GW, Hjelmborg, JVB, Rebato, E, Swan, GE, Krasnow, R, Busjahn, A, Lichtenstein, P, Oncel, SY, Aliev, F, Baker, LA, Tuvblad, C, Siribaddana, SH, Hotopf, M, Sumathipala, A, Rijsdijk, F, Magnusson, PKE, Pedersen, NL, Aslan, AKD, Ordonana, JR, Sanchez-Romera, JF, Colodro-Conde, L, Duncan, GE, Buchwald, D, Tarnoki, AD, Tarnoki, DL, Yokoyama, Y, Hopper, JL, Loos, RJF, Boomsma, DI, Sorensen, TIA, Silventoinen, K, Kaprio, J, Bogl, LH, Jelenkovic, A, Vuoksimaa, E, Ahrenfeldt, L, Pietilainen, KH, Stazi, MA, Fagnani, C, D'Ippolito, C, Hur, Y-M, Jeong, H-U, Silberg, JL, Eaves, LJ, Maes, HH, Bayasgalan, G, Narandalai, D, Cutler, TL, Kandler, C, Jang, KL, Christensen, K, Skytthe, A, Kyvik, KO, Cozen, W, Hwang, AE, Mack, TM, Derom, CA, Vlietinck, RF, Nelson, TL, Whitfield, KE, Corley, RP, Huibregtse, BM, McAdams, TA, Eley, TC, Gregory, AM, Krueger, RF, Mcgue, M, Pahlen, S, Willemsen, G, Bartels, M, van Beijsterveldt, TCEM, Pang, Z, Tan, Q, Zhang, D, Martin, NG, Medland, SE, Montgomery, GW, Hjelmborg, JVB, Rebato, E, Swan, GE, Krasnow, R, Busjahn, A, Lichtenstein, P, Oncel, SY, Aliev, F, Baker, LA, Tuvblad, C, Siribaddana, SH, Hotopf, M, Sumathipala, A, Rijsdijk, F, Magnusson, PKE, Pedersen, NL, Aslan, AKD, Ordonana, JR, Sanchez-Romera, JF, Colodro-Conde, L, Duncan, GE, Buchwald, D, Tarnoki, AD, Tarnoki, DL, Yokoyama, Y, Hopper, JL, Loos, RJF, Boomsma, DI, Sorensen, TIA, Silventoinen, K, and Kaprio, J

Abstract

BACKGROUND: The comparison of traits in twins from opposite-sex (OS) and same-sex (SS) dizygotic twin pairs is considered a proxy measure of prenatal hormone exposure. To examine possible prenatal hormonal influences on anthropometric traits, we compared mean height, body mass index (BMI), and the prevalence of being overweight or obese between men and women from OS and SS dizygotic twin pairs. METHODS: The data were derived from the COllaborative project of Development of Anthropometrical measures in Twins (CODATwins) database, and included 68,494 SS and 53,808 OS dizygotic twin individuals above the age of 20 years from 31 twin cohorts representing 19 countries. Zygosity was determined by questionnaires or DNA genotyping depending on the study. Multiple regression and logistic regression models adjusted for cohort, age, and birth year with the twin type as a predictor were carried out to compare height and BMI in twins from OS pairs with those from SS pairs and to calculate the adjusted odds ratios and 95% confidence intervals for being overweight or obese. RESULTS: OS females were, on average, 0.31 cm (95% confidence interval (CI) 0.20, 0.41) taller than SS females. OS males were also, on average, taller than SS males, but this difference was only 0.14 cm (95% CI 0.02, 0.27). Mean BMI and the prevalence of overweight or obesity did not differ between males and females from SS and OS twin pairs. The statistically significant differences between OS and SS twins for height were small and appeared to reflect our large sample size rather than meaningful differences of public health relevance. CONCLUSIONS: We found no evidence to support the hypothesis that prenatal hormonal exposure or postnatal socialization (i.e., having grown up with a twin of the opposite sex) has a major impact on height and BMI in adulthood.

Published
2017

15. Differences in genetic and environmental variation in adult BMI by sex, age, time period, and region : An individual-based pooled analysis of 40 twin cohorts

Author

Silventoinen, K., Jelenkovic, A., Sund, R., Yokoyama, Y., Hur, Y. -M, Cozen, W., Hwang, A. E., Mack, T. M., Honda, C., Inui, F., Iwatani, Y., Watanabe, M., Tomizawa, R., Pietilainen, K. H., Rissanen, A., Siribaddana, S. H., Hotopf, M., Sumathipala, A., Rijsdijk, F., Tan, Q., Zhang, D., Pang, Z., Piirtola, M., Aaltonen, S., Oncel, S. Y., Aliev, F., Rebato, E., Hjelmborg, J. B., Christensen, K., Skytthe, A., Kyvik, K. O., Silberg, J. L., Eaves, L. J., Cutler, T. L., Ordonana, J. R., Sanchez-Romera, J. F., Colodro-Conde, L., Song, Y. -M, Yang, S., Lee, K., Franz, C. E., Kremen, W. S., Lyons, M. J., Busjahn, A., Nelson, T. L., Whitfield, K. E., Kandler, C., Jang, K. L., Gatz, M., Butler, D. A., Stazi, M. A., Fagnani, C., D'Ippolito, C., Duncan, G. E., Buchwald, D., Martin, N. G., Medland, S. E., Montgomery, G. W., Jeong, H. -U, Swan, G. E., Krasnow, R., Magnusson, P. K. E., Pedersen, N. L., Dahl Aslan, Anna K., McAdams, T. A., Eley, T. C., Gregory, A. M., Tynelius, P., Baker, L. A., Tuvblad, C., Bayasgalan, G., Narandalai, D., Spector, T. D., Mangino, M., Lachance, G., Burt, S. A., Klump, K. L., Harris, J. R., Brandt, I., Nilsen, T. S., Krueger, R. F., McGue, M., Pahlen, S., Corley, R. P., Huibregtse, B. M., Bartels, M., Van Beijsterveldt, C. E. M., Willemsen, G., Goldberg, J. H., Rasmussen, F., Tarnoki, A. D., Tarnoki, D. L., Derom, C. A., Vlietinck, R. F., Loos, R. J. F., Hopper, J. L., Sung, J., Maes, H. H., Turkheimer, E., Boomsma, D. I., Sørensen, T. I. A., Kaprio, J., Silventoinen, K., Jelenkovic, A., Sund, R., Yokoyama, Y., Hur, Y. -M, Cozen, W., Hwang, A. E., Mack, T. M., Honda, C., Inui, F., Iwatani, Y., Watanabe, M., Tomizawa, R., Pietilainen, K. H., Rissanen, A., Siribaddana, S. H., Hotopf, M., Sumathipala, A., Rijsdijk, F., Tan, Q., Zhang, D., Pang, Z., Piirtola, M., Aaltonen, S., Oncel, S. Y., Aliev, F., Rebato, E., Hjelmborg, J. B., Christensen, K., Skytthe, A., Kyvik, K. O., Silberg, J. L., Eaves, L. J., Cutler, T. L., Ordonana, J. R., Sanchez-Romera, J. F., Colodro-Conde, L., Song, Y. -M, Yang, S., Lee, K., Franz, C. E., Kremen, W. S., Lyons, M. J., Busjahn, A., Nelson, T. L., Whitfield, K. E., Kandler, C., Jang, K. L., Gatz, M., Butler, D. A., Stazi, M. A., Fagnani, C., D'Ippolito, C., Duncan, G. E., Buchwald, D., Martin, N. G., Medland, S. E., Montgomery, G. W., Jeong, H. -U, Swan, G. E., Krasnow, R., Magnusson, P. K. E., Pedersen, N. L., Dahl Aslan, Anna K., McAdams, T. A., Eley, T. C., Gregory, A. M., Tynelius, P., Baker, L. A., Tuvblad, C., Bayasgalan, G., Narandalai, D., Spector, T. D., Mangino, M., Lachance, G., Burt, S. A., Klump, K. L., Harris, J. R., Brandt, I., Nilsen, T. S., Krueger, R. F., McGue, M., Pahlen, S., Corley, R. P., Huibregtse, B. M., Bartels, M., Van Beijsterveldt, C. E. M., Willemsen, G., Goldberg, J. H., Rasmussen, F., Tarnoki, A. D., Tarnoki, D. L., Derom, C. A., Vlietinck, R. F., Loos, R. J. F., Hopper, J. L., Sung, J., Maes, H. H., Turkheimer, E., Boomsma, D. I., Sørensen, T. I. A., and Kaprio, J.

Abstract

Background: Genes and the environment contribute to variation in adult body mass index [BMI (in kg/m2)], but factors modifying these variance components are poorly understood. Objective: We analyzed genetic and environmental variation in BMI between men and women from young adulthood to old age from the 1940s to the 2000s and between cultural-geographic regions representing high (North America and Australia), moderate (Europe), and low (East Asia) prevalence of obesity. Design: We used genetic structural equation modeling to analyze BMI in twins ≥20 y of age from 40 cohorts representing 20 countries (140,379 complete twin pairs). Results: The heritability of BMI decreased from 0.77 (95% CI: 0.77, 0.78) and 0.75 (95% CI: 0.74, 0.75) in men and women 20-29 y of age to 0.57 (95% CI: 0.54, 0.60) and 0.59 (95% CI: 0.53, 0.65) in men 70-79 y of age and women 80 y of age, respectively. The relative influence of unique environmental factors correspondingly increased. Differences in the sets of genes affecting BMI in men and women increased from 20-29 to 60-69 y of age. Mean BMI and variances in BMI increased from the 1940s to the 2000s and were greatest in North America and Australia, followed by Europe and East Asia. However, heritability estimates were largely similar over measurement years and between regions. There was no evidence of environmental factors shared by co-twins affecting BMI. Conclusions: The heritability of BMI decreased and differences in the sets of genes affecting BMI in men and women increased from young adulthood to old age. The heritability of BMI was largely similar between cultural-geographic regions and measurement years, despite large differences in mean BMI and variances in BMI. Our results show a strong influence of genetic factors on BMI, especially in early adulthood, regardless of the obesity level in the population.

Published
2017
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18. Effectiveness of adjuvant chemotherapy after radical nephroureterectomy for locally advanced and/or positive regional lymph node upper tract urothelial carcinoma

Author

Seisen, T., primary, Krasnow, R., additional, Bellmunt, J., additional, Rouprêt, M., additional, Leow, J., additional, Lipsitz, S., additional, Vetterlein, M., additional, Preston, M., additional, Hanna, N., additional, Kibel, A., additional, Sun, M., additional, Choueiri, T., additional, Trinh, Q.-D., additional, and Chang, S.L., additional

Published
2017
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19. Efficacité de la chimiothérapie adjuvante après néphro-urétérectomie totale pour le traitement des tumeurs de la voie excrétrice urinaire supérieure classées pT3/T4 et/ou pN+

Author

Seisen, T., primary, Krasnow, R., additional, Rouprêt, M., additional, Lipsitz, S., additional, Leow, J., additional, Vetterlein, M., additional, Preston, M., additional, Kibel, A., additional, Choueiri, T., additional, Bellmunt, J., additional, Trinh, Q., additional, and Chang, S., additional

Published
2016
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20. Genetic and environmental influences on adult human height across birth cohorts from 1886 to 1994

Author

Jelenkovic, A., Hur, Y. -M, Sund, R., Yokoyama, Y., Siribaddana, S. H., Hotopf, M., Sumathipala, A., Rijsdijk, F., Tan, Q., Zhang, D., Pang, Z., Aaltonen, S., Heikkilä, K., Öncel, S.Y., Aliev, F., Rebato, E., Tarnoki, A. D., Tarnoki, D. L., Christensen, K., Skytthe, A., Kyvik, K. O., Silberg, J. L., Eaves, L. J., Maes, H. H., Cutler, T. L., Hopper, J. L., Ordoñana, J. R., Sánchez-Romera, J. F., Colodro-Conde, L., Cozen, W., Hwang, A. E., Mack, T. M., Sung, J., Song, Y. -M, Yang, S., Lee, K., Franz, C. E., Kremen, W. S., Lyons, M. J., Busjahn, A., Nelson, T. L., Whitfield, K. E., Kandler, C., Jang, K. L., Gatz, M., Butler, D. A., Stazi, M. A., Fagnani, C., D’Ippolito, C., Duncan, G. E., Buchwald, D., Derom, C. A., Vlietinck, R. F., Loos, R. J., Martin, N. G., Medland, S. E., Montgomery, G. W., Jeong, H. -U, Swan, G. E., Krasnow, R., Magnusson, P. K., Pedersen, N. L., Dahl-Aslan, Anna K., McAdams, T. A., Eley, T. C., Gregory, A. M., Tynelius, P., Baker, L. A., Tuvblad, C., Bayasgalan, G., Narandalai, D., Lichtenstein, P., Spector, T. D., Mangino, M., Lachance, G., Bartels, M., Van Beijsterveldt, T. C., Willemsen, G., Alexandra Burt, S., Klump, K. L., Harris, J. R., Brandt, I., Nilsen, T. S., Krueger, R. F., McGue, M., Pahlen, S., Corley, R. P., Hjelmborg, J. V. B., Goldberg, J. H., Iwatani, Y., Watanabe, M., Honda, C., Inui, F., Rasmussen, F., Huibregtse, B. M., Boomsma, D. I., Sørensen, T. I. A., Kaprio, J., Silventoinen, K., Jelenkovic, A., Hur, Y. -M, Sund, R., Yokoyama, Y., Siribaddana, S. H., Hotopf, M., Sumathipala, A., Rijsdijk, F., Tan, Q., Zhang, D., Pang, Z., Aaltonen, S., Heikkilä, K., Öncel, S.Y., Aliev, F., Rebato, E., Tarnoki, A. D., Tarnoki, D. L., Christensen, K., Skytthe, A., Kyvik, K. O., Silberg, J. L., Eaves, L. J., Maes, H. H., Cutler, T. L., Hopper, J. L., Ordoñana, J. R., Sánchez-Romera, J. F., Colodro-Conde, L., Cozen, W., Hwang, A. E., Mack, T. M., Sung, J., Song, Y. -M, Yang, S., Lee, K., Franz, C. E., Kremen, W. S., Lyons, M. J., Busjahn, A., Nelson, T. L., Whitfield, K. E., Kandler, C., Jang, K. L., Gatz, M., Butler, D. A., Stazi, M. A., Fagnani, C., D’Ippolito, C., Duncan, G. E., Buchwald, D., Derom, C. A., Vlietinck, R. F., Loos, R. J., Martin, N. G., Medland, S. E., Montgomery, G. W., Jeong, H. -U, Swan, G. E., Krasnow, R., Magnusson, P. K., Pedersen, N. L., Dahl-Aslan, Anna K., McAdams, T. A., Eley, T. C., Gregory, A. M., Tynelius, P., Baker, L. A., Tuvblad, C., Bayasgalan, G., Narandalai, D., Lichtenstein, P., Spector, T. D., Mangino, M., Lachance, G., Bartels, M., Van Beijsterveldt, T. C., Willemsen, G., Alexandra Burt, S., Klump, K. L., Harris, J. R., Brandt, I., Nilsen, T. S., Krueger, R. F., McGue, M., Pahlen, S., Corley, R. P., Hjelmborg, J. V. B., Goldberg, J. H., Iwatani, Y., Watanabe, M., Honda, C., Inui, F., Rasmussen, F., Huibregtse, B. M., Boomsma, D. I., Sørensen, T. I. A., Kaprio, J., and Silventoinen, K.

Abstract

Human height variation is determined by genetic and environmental factors, but it remains unclear whether their influences differ across birth-year cohorts. We conducted an individual-based pooled analysis of 40 twin cohorts including 143,390 complete twin pairs born 1886-1994. Although genetic variance showed a generally increasing trend across the birth-year cohorts, heritability estimates (0.69-0.84 in men and 0.53-0.78 in women) did not present any clear pattern of secular changes. Comparing geographic-cultural regions (Europe, North America and Australia, and East Asia), total height variance was greatest in North America and Australia and lowest in East Asia, but no clear pattern in the heritability estimates across the birth-year cohorts emerged. Our findings do not support the hypothesis that heritability of height is lower in populations with low living standards than in affluent populations, nor that heritability of height will increase within a population as living standards improve.

Published
2016
Full Text
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21. Genetic and environmental influences on adult human height across birth cohorts from 1886 to 1994

Author

University of Helsinki, Department of Social Research, University of Helsinki, Department of Public Health, University of Helsinki, Clinicum, Jelenkovic, Aline, Hur, Yoon-Mi, Sund, Reijo, Yokoyama, Y., Siribaddana, S. H., Hotopf, M., Sumathipala, A., Rijsdijk, F., Tan, Q., Zhang, D., Pang, Z., Aaltonen, Sari, Heikkilä, Kauko, Oncel, S. Y., Aliev, F., Rebato, E., Tarnoki, A. D., Tarnoki, D. L., Christensen, K., Skytthe, A., Kyvik, K. O., Silberg, J. L., Eaves, L. J., Maes, H. H., Cutler, T. L., Hopper, J. L., Ordonana, J. R., Sanchez-Romera, J. F., Colodro-Conde, L., Cozen, W., Hwang, A. E., Mack, T. M., Sung, J., Song, Y. M., Yang, S., Lee, K., Franz, C. E., Kremen, W. S., Lyons, M. J., Busjahn, A., Nelson, T. L., Whitfield, K. E., Kandler, C., Jang, K. L., Gatz, M., Butler, D. A., Stazi, M. A., Fagnani, C., D'Ippolito, C., Duncan, G. E., Buchwald, D., Derom, C. A., Vlietinck, R. F., Loos, R. J., Martin, N. G., Medland, S. E., Montgomery, G. W., Jeong, H. U., Swan, G. E., Krasnow, R., Magnusson, P. K., Pedersen, N. L., Dahl-Aslan, A. K., McAdams, T. A., Eley, T. C., Gregory, A. M., Tynelius, P., Baker, L. A., Tuvblad, C., Bayasgalan, G., Narandalai, D., Lichtenstein, P., Spector, T. D., Mangino, M., Lachance, G., Bartels, M., van Beijsterveldt, T. C., Willemsen, G., Burt, S. A., Klump, K. L., Harris, J. R., Brandt, I., Nilsen, T. S., Krueger, R. F., McGue, M., Pahlen, S., Corley, R. P., Hjelmborg, J. V., Goldberg, J. H., Iwatani, Y., Watanabe, M., Honda, C., Inui, F., Rasmussen, F., Huibregtse, B. M., Boomsma, D. I., Sorensen, T. I., Kaprio, Jaakko, Silventoinen, Karri, University of Helsinki, Department of Social Research, University of Helsinki, Department of Public Health, University of Helsinki, Clinicum, Jelenkovic, Aline, Hur, Yoon-Mi, Sund, Reijo, Yokoyama, Y., Siribaddana, S. H., Hotopf, M., Sumathipala, A., Rijsdijk, F., Tan, Q., Zhang, D., Pang, Z., Aaltonen, Sari, Heikkilä, Kauko, Oncel, S. Y., Aliev, F., Rebato, E., Tarnoki, A. D., Tarnoki, D. L., Christensen, K., Skytthe, A., Kyvik, K. O., Silberg, J. L., Eaves, L. J., Maes, H. H., Cutler, T. L., Hopper, J. L., Ordonana, J. R., Sanchez-Romera, J. F., Colodro-Conde, L., Cozen, W., Hwang, A. E., Mack, T. M., Sung, J., Song, Y. M., Yang, S., Lee, K., Franz, C. E., Kremen, W. S., Lyons, M. J., Busjahn, A., Nelson, T. L., Whitfield, K. E., Kandler, C., Jang, K. L., Gatz, M., Butler, D. A., Stazi, M. A., Fagnani, C., D'Ippolito, C., Duncan, G. E., Buchwald, D., Derom, C. A., Vlietinck, R. F., Loos, R. J., Martin, N. G., Medland, S. E., Montgomery, G. W., Jeong, H. U., Swan, G. E., Krasnow, R., Magnusson, P. K., Pedersen, N. L., Dahl-Aslan, A. K., McAdams, T. A., Eley, T. C., Gregory, A. M., Tynelius, P., Baker, L. A., Tuvblad, C., Bayasgalan, G., Narandalai, D., Lichtenstein, P., Spector, T. D., Mangino, M., Lachance, G., Bartels, M., van Beijsterveldt, T. C., Willemsen, G., Burt, S. A., Klump, K. L., Harris, J. R., Brandt, I., Nilsen, T. S., Krueger, R. F., McGue, M., Pahlen, S., Corley, R. P., Hjelmborg, J. V., Goldberg, J. H., Iwatani, Y., Watanabe, M., Honda, C., Inui, F., Rasmussen, F., Huibregtse, B. M., Boomsma, D. I., Sorensen, T. I., Kaprio, Jaakko, and Silventoinen, Karri

Abstract

Human height variation is determined by genetic and environmental factors, but it remains unclear whether their influences differ across birth-year cohorts. We conducted an individual-based pooled analysis of 40 twin cohorts including 143,390 complete twin pairs born 1886-1994. Although genetic variance showed a generally increasing trend across the birth-year cohorts, heritability estimates (0.69-0.84 in men and 0.53-0.78 in women) did not present any clear pattern of secular changes. Comparing geographic-cultural regions (Europe, North America and Australia, and East Asia), total height variance was greatest in North America and Australia and lowest in East Asia, but no clear pattern in the heritability estimates across the birth-year cohorts emerged. Our findings do not support the hypothesis that heritability of height is lower in populations with low living standards than in affluent populations, nor that heritability of height will increase within a population as living standards improve.

Published
2016

22. Genetic and environmental effects on body mass index from infancy to the onset of adulthood: an individual-based pooled analysis of 45 twin cohorts participating in the COllaborative project of Development of Anthropometrical measures in Twins (CODATwins)

Author

Silventoinen, K, Jelenkovic, A, Sund, R, Hur, Y-M, Yokoyama, Y, Honda, C, Hjelmborg, JV, Möller, S, Ooki, S, Aaltonen, S, Ji, F, Ning, F, Pang, Z, Rebato, E, Busjahn, A, Kandler, C, Saudino, KJ, Jang, KL, Cozen, W, Hwang, AE, Mack, TM, Gao, W, Yu, C, Li, L, Corley, RP, Huibregtse, BM, Christensen, K, Skytthe, A, Kyvik, KO, Derom, CA, Vlietinck, RF, Loos, RJ, Heikkilä, K, Wardle, J, Llewellyn, CH, Fisher, A, McAdams, TA, Eley, TC, Gregory, AM, He, M, Ding, X, Bjerregaard-Andersen, M, Beck-Nielsen, H, Sodemann, M, Tarnoki, AD, Tarnoki, DL, Stazi, MA, Fagnani, C, D'Ippolito, C, Knafo-Noam, A, Mankuta, D, Abramson, L, Burt, SA, Klump, KL, Silberg, JL, Eaves, LJ, Maes, HH, Krueger, RF, McGue, M, Pahlen, S, Gatz, M, Butler, DA, Bartels, M, van Beijsterveldt, TC, Craig, Jeffrey, Saffery, R, Freitas, DL, Maia, JA, Dubois, L, Boivin, M, Brendgen, M, Dionne, G, Vitaro, F, Martin, NG, Medland, SE, Montgomery, GW, Chong, Y, Swan, GE, Krasnow, R, Magnusson, PK, Pedersen, NL, Tynelius, P, Lichtenstein, P, Haworth, CM, Plomin, R, Bayasgalan, G, Narandalai, D, Harden, KP, Tucker-Drob, EM, Öncel, SY, Aliev, F, Spector, T, Mangino, M, Lachance, G, Baker, LA, Tuvblad, C, Duncan, GE, Buchwald, D, Willemsen, G, Rasmussen, F, Goldberg, JH, Sørensen, TI, Boomsma, DI, Kaprio, J, Silventoinen, K, Jelenkovic, A, Sund, R, Hur, Y-M, Yokoyama, Y, Honda, C, Hjelmborg, JV, Möller, S, Ooki, S, Aaltonen, S, Ji, F, Ning, F, Pang, Z, Rebato, E, Busjahn, A, Kandler, C, Saudino, KJ, Jang, KL, Cozen, W, Hwang, AE, Mack, TM, Gao, W, Yu, C, Li, L, Corley, RP, Huibregtse, BM, Christensen, K, Skytthe, A, Kyvik, KO, Derom, CA, Vlietinck, RF, Loos, RJ, Heikkilä, K, Wardle, J, Llewellyn, CH, Fisher, A, McAdams, TA, Eley, TC, Gregory, AM, He, M, Ding, X, Bjerregaard-Andersen, M, Beck-Nielsen, H, Sodemann, M, Tarnoki, AD, Tarnoki, DL, Stazi, MA, Fagnani, C, D'Ippolito, C, Knafo-Noam, A, Mankuta, D, Abramson, L, Burt, SA, Klump, KL, Silberg, JL, Eaves, LJ, Maes, HH, Krueger, RF, McGue, M, Pahlen, S, Gatz, M, Butler, DA, Bartels, M, van Beijsterveldt, TC, Craig, Jeffrey, Saffery, R, Freitas, DL, Maia, JA, Dubois, L, Boivin, M, Brendgen, M, Dionne, G, Vitaro, F, Martin, NG, Medland, SE, Montgomery, GW, Chong, Y, Swan, GE, Krasnow, R, Magnusson, PK, Pedersen, NL, Tynelius, P, Lichtenstein, P, Haworth, CM, Plomin, R, Bayasgalan, G, Narandalai, D, Harden, KP, Tucker-Drob, EM, Öncel, SY, Aliev, F, Spector, T, Mangino, M, Lachance, G, Baker, LA, Tuvblad, C, Duncan, GE, Buchwald, D, Willemsen, G, Rasmussen, F, Goldberg, JH, Sørensen, TI, Boomsma, DI, and Kaprio, J

Published
2016

23. Genetic and environmental influences on adult human height across birth cohorts from 1886 to 1994

Author

Jelenkovic, A, Hur, Y-M, Sund, R, Yokoyama, Y, Siribaddana, SH, Hotopf, M, Sumathipala, A, Rijsdijk, F, Tan, Q, Zhang, D, Pang, Z, Aaltonen, S, Heikkila, K, Oncel, SY, Aliev, F, Rebato, E, Tarnoki, AD, Tarnoki, DL, Christensen, K, Skytthe, A, Kyvik, KO, Silberg, JL, Eaves, LJ, Maes, HH, Cutler, TL, Hopper, JL, Ordonana, JR, Sanchez-Romera, JF, Colodro-Conde, L, Cozen, W, Hwang, AE, Mack, TM, Sun, J, Song, Y-M, Yang, S, Lee, K, Franz, CE, Kremen, WS, Lyons, MJ, Busjahn, A, Nelson, TL, Whitfield, KE, Kandler, C, Jang, KL, Gatz, M, Butler, DA, Stazi, MA, Fagnani, C, D'Ippolito, C, Duncan, GE, Buchwald, D, Derom, CA, Vlietinck, RF, Loos, RJF, Martin, NG, Medland, SE, Montgomery, GW, Jeong, H-U, Swan, GE, Krasnow, R, Magnusson, PKE, Pedersen, NL, Dahl-Aslan, AK, McAdams, TA, Eley, TC, Gregory, AM, Tynelius, P, Baker, LA, Tuvblad, C, Bayasgalan, G, Narandalai, D, Lichtenstein, P, Spector, TD, Mangino, M, Lachance, G, Bartels, M, van Beijsterveldt, TCEM, Willemsen, G, Burt, SA, Klump, KL, Harris, JR, Brandt, I, Nilsen, TS, Krueger, RF, McGue, M, Pahlen, S, Corley, RP, Hjelmborg, JVB, Goldberg, JH, Iwatani, Y, Watanabe, M, Honda, C, Inui, F, Rasmussen, F, Huibregtse, BM, Boomsma, DI, Sorensen, TIA, Kaprio, J, Silventoinen, K, Jelenkovic, A, Hur, Y-M, Sund, R, Yokoyama, Y, Siribaddana, SH, Hotopf, M, Sumathipala, A, Rijsdijk, F, Tan, Q, Zhang, D, Pang, Z, Aaltonen, S, Heikkila, K, Oncel, SY, Aliev, F, Rebato, E, Tarnoki, AD, Tarnoki, DL, Christensen, K, Skytthe, A, Kyvik, KO, Silberg, JL, Eaves, LJ, Maes, HH, Cutler, TL, Hopper, JL, Ordonana, JR, Sanchez-Romera, JF, Colodro-Conde, L, Cozen, W, Hwang, AE, Mack, TM, Sun, J, Song, Y-M, Yang, S, Lee, K, Franz, CE, Kremen, WS, Lyons, MJ, Busjahn, A, Nelson, TL, Whitfield, KE, Kandler, C, Jang, KL, Gatz, M, Butler, DA, Stazi, MA, Fagnani, C, D'Ippolito, C, Duncan, GE, Buchwald, D, Derom, CA, Vlietinck, RF, Loos, RJF, Martin, NG, Medland, SE, Montgomery, GW, Jeong, H-U, Swan, GE, Krasnow, R, Magnusson, PKE, Pedersen, NL, Dahl-Aslan, AK, McAdams, TA, Eley, TC, Gregory, AM, Tynelius, P, Baker, LA, Tuvblad, C, Bayasgalan, G, Narandalai, D, Lichtenstein, P, Spector, TD, Mangino, M, Lachance, G, Bartels, M, van Beijsterveldt, TCEM, Willemsen, G, Burt, SA, Klump, KL, Harris, JR, Brandt, I, Nilsen, TS, Krueger, RF, McGue, M, Pahlen, S, Corley, RP, Hjelmborg, JVB, Goldberg, JH, Iwatani, Y, Watanabe, M, Honda, C, Inui, F, Rasmussen, F, Huibregtse, BM, Boomsma, DI, Sorensen, TIA, Kaprio, J, and Silventoinen, K

Abstract

Human height variation is determined by genetic and environmental factors, but it remains unclear whether their influences differ across birth-year cohorts. We conducted an individual-based pooled analysis of 40 twin cohorts including 143,390 complete twin pairs born 1886-1994. Although genetic variance showed a generally increasing trend across the birth-year cohorts, heritability estimates (0.69-0.84 in men and 0.53-0.78 in women) did not present any clear pattern of secular changes. Comparing geographic-cultural regions (Europe, North America and Australia, and East Asia), total height variance was greatest in North America and Australia and lowest in East Asia, but no clear pattern in the heritability estimates across the birth-year cohorts emerged. Our findings do not support the hypothesis that heritability of height is lower in populations with low living standards than in affluent populations, nor that heritability of height will increase within a population as living standards improve.

Published
2016

24. Genetic and environmental influences on height from infancy to early adulthood: An individual-based pooled analysis of 45 twin cohorts

Author

Jelenkovic, A, Sund, R, Hur, Y-M, Yokoyama, Y, Hjelmborg, JVB, Moller, S, Honda, C, Magnusson, PKE, Pedersen, NL, Ooki, S, Aaltonen, S, Stazi, MA, Fagnani, C, D'Ippolito, C, Freitas, DL, Maia, JA, Ji, F, Ning, F, Pang, Z, Rebato, E, Busjahn, A, Kandler, C, Saudino, KJ, Jang, KL, Cozen, W, Hwang, AE, Mack, TM, Gao, W, Yu, C, Li, L, Corley, RP, Huibregtse, BM, Derom, CA, Vlietinck, RF, Loos, RJF, Heikkila, K, Wardle, J, Llewellyn, CH, Fisher, A, McAdams, TA, Eley, TC, Gregory, AM, He, M, Ding, X, Bjerregaard-Andersen, M, Beck-Nielsen, H, Sodemann, M, Tarnoki, AD, Tarnoki, DL, Knafo-Noam, A, Mankuta, D, Abramson, L, Burt, SA, Klump, KL, Silberg, JL, Eaves, LJ, Maes, HH, Krueger, RF, McGue, M, Pahlen, S, Gatz, M, Butler, DA, Bartels, M, van Beijsterveldt, TCEM, Craig, JM, Saffery, R, Dubois, L, Boivin, M, Brendgen, M, Dionne, G, Vitaro, F, Martin, NG, Medland, SE, Montgomery, GW, Swan, GE, Krasnow, R, Tynelius, P, Lichtenstein, P, Haworth, CMA, Plomin, R, Bayasgalan, G, Narandalai, D, Harden, KP, Tucker-Drob, EM, Spector, T, Mangino, M, Lachance, G, Baker, LA, Tuvblad, C, Duncan, GE, Buchwald, D, Willemsen, G, Skytthe, A, Kyvik, KO, Christensen, K, Oncel, SY, Aliev, F, Rasmussen, F, Goldberg, JH, Sorensen, TIA, Boomsma, DI, Kaprio, J, Silventoinen, K, Jelenkovic, A, Sund, R, Hur, Y-M, Yokoyama, Y, Hjelmborg, JVB, Moller, S, Honda, C, Magnusson, PKE, Pedersen, NL, Ooki, S, Aaltonen, S, Stazi, MA, Fagnani, C, D'Ippolito, C, Freitas, DL, Maia, JA, Ji, F, Ning, F, Pang, Z, Rebato, E, Busjahn, A, Kandler, C, Saudino, KJ, Jang, KL, Cozen, W, Hwang, AE, Mack, TM, Gao, W, Yu, C, Li, L, Corley, RP, Huibregtse, BM, Derom, CA, Vlietinck, RF, Loos, RJF, Heikkila, K, Wardle, J, Llewellyn, CH, Fisher, A, McAdams, TA, Eley, TC, Gregory, AM, He, M, Ding, X, Bjerregaard-Andersen, M, Beck-Nielsen, H, Sodemann, M, Tarnoki, AD, Tarnoki, DL, Knafo-Noam, A, Mankuta, D, Abramson, L, Burt, SA, Klump, KL, Silberg, JL, Eaves, LJ, Maes, HH, Krueger, RF, McGue, M, Pahlen, S, Gatz, M, Butler, DA, Bartels, M, van Beijsterveldt, TCEM, Craig, JM, Saffery, R, Dubois, L, Boivin, M, Brendgen, M, Dionne, G, Vitaro, F, Martin, NG, Medland, SE, Montgomery, GW, Swan, GE, Krasnow, R, Tynelius, P, Lichtenstein, P, Haworth, CMA, Plomin, R, Bayasgalan, G, Narandalai, D, Harden, KP, Tucker-Drob, EM, Spector, T, Mangino, M, Lachance, G, Baker, LA, Tuvblad, C, Duncan, GE, Buchwald, D, Willemsen, G, Skytthe, A, Kyvik, KO, Christensen, K, Oncel, SY, Aliev, F, Rasmussen, F, Goldberg, JH, Sorensen, TIA, Boomsma, DI, Kaprio, J, and Silventoinen, K

Abstract

Height variation is known to be determined by both genetic and environmental factors, but a systematic description of how their influences differ by sex, age and global regions is lacking. We conducted an individual-based pooled analysis of 45 twin cohorts from 20 countries, including 180,520 paired measurements at ages 1-19 years. The proportion of height variation explained by shared environmental factors was greatest in early childhood, but these effects remained present until early adulthood. Accordingly, the relative genetic contribution increased with age and was greatest in adolescence (up to 0.83 in boys and 0.76 in girls). Comparing geographic-cultural regions (Europe, North-America and Australia, and East-Asia), genetic variance was greatest in North-America and Australia and lowest in East-Asia, but the relative proportion of genetic variation was roughly similar across these regions. Our findings provide further insights into height variation during childhood and adolescence in populations representing different ethnicities and exposed to different environments.

Published
2016

25. The CODATwins Project: the cohort description of collaborative project of development of anthropometrical measures in twins to study macro-environmental variation in genetic and environmental effects on anthropometric traits

Author

Silventoinen, K., Jelenkovic, A., Sund, R., Honda, C., Aaltonen, S., Yokoyama, Y., Tarnoki, AD, Tarnoki, D. L., Ning, F., Ji, F., Pang, Z., Ordoñana, J. R., Sánchez-Romera, J. F., Colodro-Conde, L., Burt, S. A., Klump, K. L., Medland, S. E., Montgomery, G. W., Kandler, C., McAdams, T. A., Eley, T. C., Gregory, A. M., Saudino, K. J., Dubois, L., Boivin, M., Haworth, C. M. A., Plomin, R., Öncel, S. Y., Aliev, F., Stazi, M. A., Fagnani, C., D'Ippolito, C., Craig, J., Saffery, R., Siribaddana, S. H., Hotopf, M., Sumathipala, A., Spector, T., Mangino, M., Lachance, G., Gatz, M., Butler, D. A., Bayasgalan, G., Narandalai, D., Freitas, D. L., Maia, J. A., Harden, K. P., Tucker-Drob, E. M., Christensen, K., Skytthe, A., Kyvik, K. O., Hong, C., Chong, Y., Derom, C. A., Vlietinck, R. F., Loos, R. J. F., Cozen, W., Hwang, A. E., Mack, T. M., He, M., Ding, X., Chang, B., Silberg, J. L., Eaves, L. J., Maes, H. H., Cutler, T. L., Hopper, J. L., Aujard, K., Magnusson, P. K. E., Pedersen, N. L., Aslan, A. K. D., Song, Y.- M., Yang, S., Lee, K., Baker, L. A., Tuvblad, C., Bjerregaard-Andersen, M., Beck-Nielsen, H., Sodemann, M., Heikkilä, K., Tan, Q., Zhang, D., Swan, G. E., Krasnow, R., Jang, K. L., Knafo-Noam, A., Mankuta, D., Abramson, L., Lichtenstein, P., Krueger, R. F., McGue, M., Pahlen, S., Tynelius, P., Duncan, G. E., Buchwald, D., Corley, R. P., Huibregtse, B. M., Nelson, T. L., Whitfield, K. E., Franz, C. E., Kremen, W. S., Lyons, M. J., Ooki, S., Brandt, I., Nilsen, T. S., Inui, F., Watanabe, M., Bartels, M., van Beijsterveldt, T. C. E. M., Wardle, J., Llewellyn, C. H., Fisher, A., Rebato, E., Martin, N. G., Iwatani, Y., Hayakawa, K., Rasmussen, F., Sung, J., Harris, J. R., Willemsen, G., Busjahn, A., Goldberg, J. H., Boomsma, D. I., Hur, Y. - M., Sørensen, T. I. A., Kaprio, J., Silventoinen, K., Jelenkovic, A., Sund, R., Honda, C., Aaltonen, S., Yokoyama, Y., Tarnoki, AD, Tarnoki, D. L., Ning, F., Ji, F., Pang, Z., Ordoñana, J. R., Sánchez-Romera, J. F., Colodro-Conde, L., Burt, S. A., Klump, K. L., Medland, S. E., Montgomery, G. W., Kandler, C., McAdams, T. A., Eley, T. C., Gregory, A. M., Saudino, K. J., Dubois, L., Boivin, M., Haworth, C. M. A., Plomin, R., Öncel, S. Y., Aliev, F., Stazi, M. A., Fagnani, C., D'Ippolito, C., Craig, J., Saffery, R., Siribaddana, S. H., Hotopf, M., Sumathipala, A., Spector, T., Mangino, M., Lachance, G., Gatz, M., Butler, D. A., Bayasgalan, G., Narandalai, D., Freitas, D. L., Maia, J. A., Harden, K. P., Tucker-Drob, E. M., Christensen, K., Skytthe, A., Kyvik, K. O., Hong, C., Chong, Y., Derom, C. A., Vlietinck, R. F., Loos, R. J. F., Cozen, W., Hwang, A. E., Mack, T. M., He, M., Ding, X., Chang, B., Silberg, J. L., Eaves, L. J., Maes, H. H., Cutler, T. L., Hopper, J. L., Aujard, K., Magnusson, P. K. E., Pedersen, N. L., Aslan, A. K. D., Song, Y.- M., Yang, S., Lee, K., Baker, L. A., Tuvblad, C., Bjerregaard-Andersen, M., Beck-Nielsen, H., Sodemann, M., Heikkilä, K., Tan, Q., Zhang, D., Swan, G. E., Krasnow, R., Jang, K. L., Knafo-Noam, A., Mankuta, D., Abramson, L., Lichtenstein, P., Krueger, R. F., McGue, M., Pahlen, S., Tynelius, P., Duncan, G. E., Buchwald, D., Corley, R. P., Huibregtse, B. M., Nelson, T. L., Whitfield, K. E., Franz, C. E., Kremen, W. S., Lyons, M. J., Ooki, S., Brandt, I., Nilsen, T. S., Inui, F., Watanabe, M., Bartels, M., van Beijsterveldt, T. C. E. M., Wardle, J., Llewellyn, C. H., Fisher, A., Rebato, E., Martin, N. G., Iwatani, Y., Hayakawa, K., Rasmussen, F., Sung, J., Harris, J. R., Willemsen, G., Busjahn, A., Goldberg, J. H., Boomsma, D. I., Hur, Y. - M., Sørensen, T. I. A., and Kaprio, J.

Published
2015

28. Organic Cation Transporter Variation and Response to Smoking Cessation Therapies

Author

Bergen, A. W., primary, Javitz, H. S., additional, Krasnow, R., additional, Michel, M., additional, Nishita, D., additional, Conti, D. V., additional, Edlund, C. K., additional, Kwok, P.-Y., additional, McClure, J. B., additional, Kim, R. B., additional, Hall, S. M., additional, Tyndale, R. F., additional, Baker, T. B., additional, Benowitz, N. L., additional, and Swan, G. E., additional

Published
2014
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33. A single frizzled protein has a dual function in tissue polarity.

Author

Krasnow, R E and Adler, P N

Abstract

The Drosophila frizzled (fz) gene is required for the development of normal tissue polarity in the epidermis. Genetic epistasis experiments argue that fz is at the top of a regulatory hierarchy that controls the subcellular site for prehair initiation within the cells of the pupal wing (Wong and Adler, 1993; J. Cell Biol. 123, 209-221). Genetic mosaic experiments indicate that fz has both cell autonomous and cell non-autonomous functions that are separately mutable (Vinson and Adler, 1987; Nature 329, 549-551). Two species of fz mRNA have been identified, raising the question as to whether the two functions are provided by a single protein or by two separate protein species. We generated transgenic flies that express each of these mRNAs under the control of an hsp70 promoter. Only one of the transgenes (hsfzI) showed any fz activity. At 29 degrees C, the hsfzI transgene provided almost complete rescue of a null fz mutation, indicating that the protein encoded by this cDNA can fulfill both fz functions. Overexpression of the hsfzI transgene resulted in two distinct tissue polarity phenotypes depending on the time of heat shock.

Published
1994

34. Dishevelled is a component of the frizzled signaling pathway in Drosophila.

Author

Krasnow, R E, Wong, L L, and Adler, P N

Abstract

The tissue polarity genes in Drosophila are required to coordinate cell polarity within the plane of the epidermis. Evidence to date suggests that these genes may encode components of a novel signal transduction pathway. Three of the genes, frizzled (fz), dishevelled (dsh), and prickle (pk) share a similar tissue polarity phenotype, suggesting that they function together in a single process. dsh is also known to function as a mediator of wingless (wg) signaling in a variety of developmental patterning processes in the fly. In this study, we make use of a fz transgene and a hypomorphic fz allele as genetic tools in an attempt to order these genes in a genetic hierarchy. Our results argue that dsh encodes a dosage sensitive component required for fz function and that it likely acts downstream of fz in the generation of tissue polarity. Our findings suggest that dsh may have a general role in signal transduction, perhaps as a component of a receptor complex.

Published
1995

36. Test-Retest Reliability of Web-Based Retrospective Self-Report of Tobacco Exposure and Risk

Author

Brigham, Janet, Lessov-Schlaggar, Christina N, Javitz, Harold S, Krasnow, Ruth E, McElroy, Mary, and Swan, Gary E

Subjects
Computer applications to medicine. Medical informatics, R858-859.7, Public aspects of medicine, RA1-1270
Abstract

Background Retrospectively collected data about the development and maintenance of behaviors that impact health are a valuable source of information. Establishing the reliability of retrospective measures is a necessary step in determining the utility of that methodology and in studying behaviors in the context of risk and protective factors. Objective The goal of this study was to examine the reliability of self-report of a specific health-affecting behavior, tobacco use, and its associated risk and protective factors as examined with a Web-based questionnaire. Methods Core tobacco use and risk behavior questions in the Lifetime Tobacco Use Questionnaire—a closed, invitation-only, password-controlled, Web-based instrument—were administered at a 2-month test-retest interval to a convenience sample of 1229 respondents aged 18 to 78 years. Tobacco use items, which covered cigarettes, cigars, smokeless tobacco, and pipe tobacco, included frequency of use, amount used, first use, and a pack-years calculation. Risk-related questions included family history of tobacco use, secondhand smoke exposure, alcohol use, and religiosity. Results Analyses of test-retest reliability indicated modest (.30 to .49), moderate (.50 to .69), or high (.70 to 1.00) reliability across nearly all questions, with minimal reliability differences in analyses by sex, age, and income grouping. Most measures of tobacco use history showed moderate to high reliability, particularly for age of first use, age of first weekly and first daily smoking, and age at first or only quit attempt. Some measures of family tobacco use history, secondhand smoke exposure, alcohol use, and religiosity also had high test-retest reliability. Reliability was modest for subjective response to first use. Conclusions The findings reflect the stability of retrospective recall of tobacco use and risk factor self-report responses in a Web-questionnaire context. Questions that are designed and tested with psychometric scrutiny can yield reliable results in a Web setting.

Published
2009
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37. Microsurgical treatment of lower extremity lymphedema: A multidisciplinary approach to improve morbidity in advanced penile cancer patients.

Author

Goldman C, Lee H, Tom L, and Krasnow R

Subjects
Humans, Lower Extremity surgery, Male, Morbidity, Lymphatic Vessels, Lymphedema etiology, Lymphedema prevention & control, Lymphedema surgery, Penile Neoplasms surgery
Abstract

Introduction: Lower extremity lymphedema is a major source of morbidity in up to 70% of penile cancer patients. Lymphedema is often thought to be incurable, though surgical treatments have started to emerge. This study is the first to apply lymphovenous bypass specifically to penile cancer patients status post lymphadenectomy., Methods: We performed microsurgical lymphovenous bypass in 3 patients who underwent inguinal lymphadenectomy for advanced penile cancer, and later lymph node transplant in 1 patient., Results: The lymphovenous bypass was performed by a trained microsurgeon: Two patients were treated as outpatients for lymphedema, and 1 patient underwent prophylactic lymphovenous bypass simultaneously with initial lymphadenectomy. We saw significant improvement in patient's clinical lymphedema as well as lymphatic drainage on infared imaging for 2 of 3 patients at 12 months, however 1 of these patients did require later lymph node transfer at 24 months., Conclusion: This early proof of concept study shows that these procedures should be considered and studied further in the treatment and prevention of debilitating lymphedema in the penile cancer population., (Copyright © 2021 Elsevier Inc. All rights reserved.)

Published
2022
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38. Neuroendocrine tumor causing ureteral obstruction in a patient with prior ileal conduit.

Author

Alger J, Mallahan C, Deng T, Marshall J, and Krasnow R

Subjects
Cystectomy adverse effects, Humans, Ileum surgery, Hydronephrosis complications, Hydronephrosis surgery, Neuroendocrine Tumors complications, Neuroendocrine Tumors surgery, Ureter surgery, Ureteral Obstruction etiology, Ureteral Obstruction surgery, Urinary Bladder Neoplasms complications, Urinary Bladder Neoplasms pathology, Urinary Bladder Neoplasms surgery, Urinary Diversion adverse effects
Abstract

Acquired hydronephrosis following cystectomy and ileal conduit urinary diversion for bladder cancer is most commonly caused by stricture of the ureter or the ureteroenteric anastomosis. Nevertheless, malignant obstruction due to ureteral tumor recurrence must be ruled out. Neuroendocrine tumors of the ureter are extremely rare and an unlikely cause of hydronephrosis in this setting. We present the first reported case of a patient with a history of bladder cancer and an ileal conduit presenting with hydronephrosis secondary to an obstructing carcinoid tumor of the ureter.

Published
2021

39. Complications and Outcomes of Salvage Cystectomy after Trimodality Therapy.

Author

Pieretti A, Krasnow R, Drumm M, Gusev A, Dahl DM, McGovern F, Blute ML, Shipley WU, Efstathiou JA, Feldman AS, and Wszolek MF

Subjects
Aged, Combined Modality Therapy, Female, Humans, Male, Retrospective Studies, Salvage Therapy, Treatment Outcome, Urinary Bladder Neoplasms therapy, Cystectomy methods, Neoplasm Recurrence, Local surgery, Postoperative Complications epidemiology, Urinary Bladder Neoplasms surgery
Abstract

Purpose: Salvage cystectomy is required for some patients with intravesical recurrence after trimodality therapy. We compared postoperative outcomes between salvage cystectomy post-trimodality therapy, primary cystectomy and primary cystectomy with prior history of nontrimodality therapy abdominal or pelvic radiotherapy., Materials and Methods: We included 265 patients who underwent radical cystectomy at Massachusetts General Hospital for cT1-T4 bladder cancer between 2003 and 2013. Patients were grouped as salvage cystectomy post-trimodality therapy, primary cystectomy or primary cystectomy with prior history of nontrimodality therapy abdominal or pelvic radiotherapy. Early (≤90 days) and late (>90 days) complications were compared. Disease-specific survival and overall survival were calculated using a Cox regression model, and adjusted survival curves were generated., Results: The median followup from the time of cystectomy was 65.5 months. There was no difference in intraoperative and early complications between the groups. The detection of late complications was higher in salvage cystectomy post-trimodality therapy compared to primary cystectomy and primary cystectomy with prior history of nontrimodality therapy abdominal or pelvic radiotherapy (p=0.03). In multivariable Cox regression analysis, salvage cystectomy post-trimodality therapy was associated with a higher incidence of any late (HR 2.3, p=0.02) and major late complications (HR 2.1, p <0.05). There was no difference in disease-specific survival (p=0.8) or overall survival (p=0.9) between the groups., Conclusions: Salvage cystectomy post-trimodality therapy for intravesical recurrence post-trimodality therapy has an intraoperative and early complication rate comparable to primary cystectomy and primary cystectomy with prior history of nontrimodality therapy abdominal or pelvic radiotherapy. Salvage cystectomy post-trimodality therapy is associated with a higher risk of overall and major late complications than primary cystectomy. The disease-specific survival and overall survival of patients who require salvage cystectomy post-trimodality therapy are comparable to both groups.

Published
2021
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40. Sex and Racial Disparities in the Treatment and Outcomes of Muscle-invasive Bladder Cancer.

Author

Marinaro J, Zeymo A, Egan J, Carvalho F, Krasnow R, Stamatakis L, Lynch J, Hwang J, Williams S, and Kowalczyk K

Subjects
Aged, Databases, Factual, Female, Humans, Male, Neoplasm Invasiveness, Race Factors, Sex Factors, United States epidemiology, Urinary Bladder Neoplasms pathology, Healthcare Disparities, Urinary Bladder Neoplasms mortality, Urinary Bladder Neoplasms therapy
Abstract

Objective: To identify racial and sex disparities in the treatment and outcomes of muscle-invasive bladder cancer (MIBC) using a nationwide oncology outcomes database., Methods: Using the National Cancer Database, we identified patients with muscle invasive bladder cancer from 2004 to 2014. Treatments analyzed included no treatment, cystectomy, neoadjuvant chemotherapy plus cystectomy ("optimal treatment"), cystectomy plus adjuvant chemotherapy, and chemoradiation. Propensity matching compared mortality outcomes between sexes. Logistic models evaluated predictors of receiving optimal treatment, as well as mortality., Results: Forty seven thousand two hundred and twenty nine patients were identified. Most patients were male (73.4%) and underwent cystectomy alone (69.0%). Propensity score matching demonstrated increased 90-day mortality in women vs men (13.0% vs 11.6%, P = .009), despite adjusting for differences in treatments between sexes. Logistic regression models showed no difference in receipt of optimal treatment between sexes (odds ratio [OR] 1.01, 95% confidence interval [CI] 0.83-1.22) although black patients were less likely to receive optimal treatment (OR 0.15, 95% CI 0.05-0.48). Logistic regression models confirmed increased 90-day mortality in female (OR 1.17, CI 1.08-1.27, P < .001) and black (OR 1.29, CI 1.11-1.50, P = .001) patients. Females had a lower overall survival on Cox regression analysis (Hazard Ratio 0.92, 95% CI 0.87-0.97)., Conclusion: While there do not appear to be significant treatment disparities between sexes, women experience higher 90-day mortality and lower overall survival. Black patients are less likely to receive optimal treatment and have a higher risk of 90-day mortality. Additional research is needed to determine the variables leading to worse outcomes in females and identify impediments to black patients receiving optimal treatment., (Copyright © 2020 Elsevier Inc. All rights reserved.)

Published
2021
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41. Patient factors predict complications after partial nephrectomy: validation and calibration of the Preoperative Risk Evaluation for Partial Nephrectomy (PREP) score.

Author

Huynh MJ, Wang Y, Joshi M, Krasnow R, Yu AX, Mossanen M, Chung BI, and Chang SL

Subjects
Age Factors, Aged, Area Under Curve, Calibration, Comorbidity, Databases, Factual, Diabetes Mellitus epidemiology, Female, Humans, Male, Middle Aged, Nephrectomy statistics & numerical data, Obesity epidemiology, Probability, Pulmonary Disease, Chronic Obstructive epidemiology, ROC Curve, Renal Insufficiency, Chronic epidemiology, Retrospective Studies, Risk Assessment methods, Risk Factors, Sex Factors, Smoking epidemiology, Cardiovascular Diseases epidemiology, Kidney Neoplasms epidemiology, Kidney Neoplasms surgery, Nephrectomy adverse effects, Postoperative Complications etiology
Abstract

Objectives: To develop and validate the Preoperative Risk Evaluation for Partial Nephrectomy (PREP) score to predict the probability of major postoperative complications after partial nephrectomy (PN) based on patient comorbidities., Patients and Methods: The Premier Healthcare Database was used to identify patients who had undergone elective PN. Through review of International Classification of Diseases ninth revision codes, we identified patient comorbidities and major surgical complications (Clavien-Dindo Grade III-V). Multivariable logistic regression was used to identify predictors of major complications. We used half of the set as the training cohort to develop our risk score and the other half as a validation cohort., Results: From 2003 to 2015, 25 451 PNs were performed. The overall rate of major complications was 4.9%. The final risk score consisted of 10 predictors: age, sex, congestive heart failure, coronary artery disease, chronic obstructive pulmonary disease, chronic kidney disease, diabetes, hypertension, obesity, and smoking. In the training cohort, the area under the receiver operating characteristic curve (AUC) was 0.75 (95% confidence interval [CI] 0.73-0.78), while the AUC for the validation cohort was 0.73 (95% CI 0.70-0.75). The predicted probabilities of major complication in the low- (≤10 points), intermediate- (11-20 points), high- (21-30 points), and very high-risk (>30 points) categories were 3% (95% CI 2.6-3.2), 8% (95% CI 7.2-9.2), 24% (95% CI 20.5-27.8), and 41% (95% CI 34.5-47.8), respectively., Conclusions: We developed and validated the PREP score to predict the risk of complications after PN based on patient characteristics. Calculation of the PREP score can help providers select treatment options for patients with a cT1a renal mass and enhance the informed consent process for patients planning to undergo PN., (© 2020 The Authors BJU International © 2020 BJU International Published by John Wiley & Sons Ltd.)

Published
2021
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42. The impact of gender and institutional factors on depression and suicidality in urology residents.

Author

Marchalik D, Goldman C, Alger J, Rodriguez A, Catomeris A, Lynch JH, Padmore J, Mete M, and Krasnow R

Subjects
Adult, Cross-Sectional Studies, Female, Humans, Male, Self Report, Sex Distribution, United States, Burnout, Professional epidemiology, Depression epidemiology, Internship and Residency, Suicidal Ideation, Urology education
Abstract

INTRODUCTION Surgical trainees experience high rates of depression and suicidal ideation (SI). However, there remain a gap in knowledge on the drivers of depression and SI in trainees, especially within the field of urology., Materials and Methods: We conducted a national study of urology trainees using a 50-item questionnaire in May 2018. The survey included demographic, depression (Patient Health Questionnaire-9 (PHQ-9)), burnout (Maslach Burnout Inventory (MBI)), and quality of life (QoL) questions., Results: Overall, 37 (17.6%) endorsed depression; 24 residents endorsed SI (11%). SI was higher in those with depression (p < 0.001). Burnout was also higher among depressed residents (97.3% versus 61.8%, p < 0.001) and those endorsing SI (16.1% versus 1.5%, p < 0.001). Depression was associated with female gender (29.2% versus 12.4%, p = 0.005), fatigue (29.5% versus 7.8%, p < 0.001), and lack of structured mentorship (23.7% versus 9.8%, p = 0.010). Access to mental health services was protective (p = 0.016). Older age, low QoL, dissatisfaction with work-life-balance (WLB), and fatigue were associated with SI. On adjusted analysis, gender (OR 3.1 [95%CI 1.4-6.9], p = 0.006), fatigue (OR 3.8[95%CI 1.6-9.0], p = 0.002), and burnout (OR 16.7 [95%CI 2.2-127.5], p = 0.007) increased the odds of depression. On exploratory analysis, self-reported burnout alone was predictive of SI (OR 7.6 [95%CI 2.5-23]), and performed similarly to an adjusted model (AUC Area 0.718 [95%CI 0.634-0.802] versus 0.825 [0.753-0.897])., Conclusions: Urology trainees experience high rates of depression and SI. Female residents have significantly higher risk of depression. A single-item appears useful to screen for SI. Further investigation is needed to understand and promote urology resident wellness.

Published
2020

43. Practice patterns for extended venous thromboembolism chemoprophylaxis among urologic oncologists after radical cystectomy.

Author

Dall CP, Shaw N, Egan J, Carvalho FL, Galloway LAS, Krasnow R, and Stamatakis L

Subjects
Aftercare, Chemoprevention, Humans, Anticoagulants therapeutic use, Cystectomy methods, Enoxaparin therapeutic use, Postoperative Complications prevention & control, Practice Patterns, Physicians', Surgical Oncology, Urinary Bladder Neoplasms surgery, Urology, Venous Thromboembolism prevention & control
Abstract

Introduction: Extended outpatient chemoprophylaxis (ECP) following radical cystectomy (RC) for bladder cancer is proven to reduce rates of venous thromboembolism (VTE). While ECP is commonly performed with enoxaparin, its cost-effectiveness and adherence rate has been called into question. Data from orthopedic literature suggest that ECP with direct oral anticoagulants (DOACs) may be as effective in VTE prevention as enoxaparin in patients undergoing joint surgery. Our goal is to determine how urologic oncologists employ ECP following RC., Methods: Members of the Society of Urologic Oncology were surveyed on practice patterns for the use of ECP after RC. Specific questions were asked regarding the use of inpatient and outpatient VTE prophylaxis, as well as perceived barriers to DOACs and enoxaparin., Results: There were 121 of 878 (13.8%) respondents and the majority were in academic practices (83%). Most respondents had at least 5 years of experience and performed greater than 10 cystectomies annually. Almost all participants utilized inpatient (97%) and extended (80%) chemoprophylaxis for VTE prevention. Of those who elected for ECP, almost all (96%) used enoxaparin. Only 3 respondents (3%) prescribed oral agents such as rivaroxaban (2) or warfarin (1). Among those using enoxaparin, financial-specific barriers to treatment such as lack of insurance coverage (38%), inability to afford the medication (51%), and need for additional insurance authorization (44%) were reported. Poor patient adherence and refusal to perform injections were reported by 20% and 18% of respondents, respectively. Among the 23 physicians who did not use ECP, cost (39%) and delivery method (26%) were cited as barriers to treatment., Conclusions: The majority of surveyed urologic oncologists are prescribing subcutaneous enoxaparin ECP following RC. Poor patient adherence due to self-injections and financial barriers were frequently reported and represent a possible opportunity for the use of oral anticoagulants in the post-operative setting. These data will be used in the development of a proposed clinical trial of a DOAC in the post-RC setting., Competing Interests: Conflicts of interest We have no personal or financial conflicts of interest to disclose., (Copyright © 2020 Elsevier Inc. All rights reserved.)

Published
2020
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45. The Impact of Institutional Factors on Physician Burnout: A National Study of Urology Trainees.

Author

Marchalik D, Brems J, Rodriguez A, Lynch JH, Padmore J, Stamatakis L, and Krasnow R

Subjects
Adult, Burnout, Professional etiology, Burnout, Professional prevention & control, Female, Health Services Accessibility, Humans, Male, Mental Health Services, Mentors, Prevalence, Risk Factors, Self Report, United States epidemiology, Burnout, Professional epidemiology, Internship and Residency, Urology education
Abstract

Objective: To determine the prevalence of burnout in urology trainees and examine the influence of personal, programmatic, and institutional factors on burnout rates., Study Design: We conducted an anonymous survey of burnout in urology residents across the United States using a 50-question REDCap-based electronic questionnaire in May of 2018. The survey included demographic questions, an inventory of stress-reduction techniques and the Maslach Burnout Inventory. Univariate analysis and multinomial logistic regression models were used to assess associations between individual, program, and organizational factors and resident burnout., Results: Overall response rate was 20.9%. Individual factors such as age, gender, exercise, and meditation were not associated with burnout while reading for relaxation (P = .022) and spending time with family (P = .025) were protective against burnout. Residents working >80 hours vs 60-80 hours and <60 hours per week were more likely to exhibit burnout (77.6% vs 66.1% vs 47.1%, respectively, P = .044). Institutional factors such as structured mentorship programs (P = .019) and access to mental health services (P <.001) were associated with decreased burnout. On multivariable analysis, unavailable or difficult-to-access mental health services were associated with increased odds of burnout (OR 5.38, 95%CI 2.20-13.16, P <.001, and OR 2.33, 95%CI 1.07-5.07, P = .034, respectively)., Conclusion: The prevalence of burnout in urology trainees is high. Institutional factors such as formal mentorship and access to mental health services may play an important role in resident well-being., (Copyright © 2019 Elsevier Inc. All rights reserved.)

Published
2019
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46. The impact of non-medical reading on clinician burnout: a national survey of palliative care providers.

Author

Marchalik D, Rodriguez A, Namath A, Krasnow R, Obara S, Padmore J, and Groninger H

Subjects
Adult, Compassion Fatigue psychology, Female, Humans, Male, Middle Aged, Palliative Care, Burnout, Professional psychology, Caregivers psychology, Physicians psychology, Reading
Abstract

Background: Clinician burnout in hospice and palliative care (HPC) has potentially widespread negative consequences including increased clinical errors, decreased professionalism, decreased staff retention, and decreased empathy. Reading non-medical literature has been associated with increased empathy, but no studies on the effect of reading on burnout have previously been conducted. We wished to assess reading patterns of practicing HPC clinicians and determine associations between non-medical reading and burnout., Methods: Sixteen-item electronic survey regarding reading practices, exposure to non-medical literature, fatigue, quality of life, and burnout symptoms was administered to members of the American Academy of Hospice and Palliative Medicine. Burnout measures of emotional exhaustion and depersonalization were assessed by the validated 2-item Maslach Burnout Inventory. Data were analyzed using descriptive statistics and multivariate regression., Results: Seven hundred nine members responded (15.2% response rate), of which 129 (18.2%) met the criteria for burnout, with 117 (16.6%) meeting the criteria for high emotional exhaustion and 45 (7.9%) meeting the criteria for high depersonalization. On univariate analysis, burnout was associated with age, reading habits, and fatigue, but not years in practice. On multivariable logistic regression consistent readers had decreased odds of overall burnout compared to inconsistent readers (OR 0.61; 95% CI, 0.39-0.97, P=0.036). This was true across the depersonalization (OR 0.58; 95% CI, 0.36-0.93, P=0.025), but not the emotional exhaustion domain., Conclusions: Reading non-medical literature on a consistent basis may be associated with a significantly decreased likelihood of burnout, specifically across the depersonalization domain.

Published
2019
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47. Resident burnout in USA and European urology residents: an international concern.

Author

Marchalik D, C Goldman C, F L Carvalho F, Talso M, H Lynch J, Esperto F, Pradere B, Van Besien J, and E Krasnow R

Subjects
Europe, Female, Humans, Male, Prevalence, Risk Factors, United States, Workload, Burnout, Professional epidemiology, Internship and Residency organization & administration, Urology education
Abstract

Objective: To describe the prevalence and predictors of burnout in USA and European urology residents, as although the rate of burnout in urologists is high and associated with severe negative sequelae, the extent and predictors of burnout in urology trainees remains poorly understood., Subjects and Methods: An anonymous 32-question survey of urology trainees across the USA and four European countries, analysing personal, programme, and institutional factors, was conducted. Burnout was assessed using the validated abridged Maslach Burnout Inventory. Univariate analysis and multivariable logistic regression models assessed drivers of burnout in the two cohorts., Results: Overall, 40% of participants met the criteria for burnout as follows: Portugal (68%), Italy (49%), USA (38%), Belgium (36%), and France (26%). Response rates were: USA, 20.9%; Italy, 45.2%; Portugal, 30.5%; France, 12.5%; and Belgium, 9.4%. Burnout was not associated with gender or level of training. In both cohorts, work-life balance (WLB) dissatisfaction was associated with increased burnout (odds ratio [OR] 4.5, P < 0.001), whilst non-medical reading (OR 0.6, P = 0.001) and structured mentorship (OR 0.4, P = 0.002) were associated with decreased burnout risk. Lack of access to mental health services was associated with burnout in the USA only (OR 3.5, P = 0.006), whilst more weekends on-call was associated with burnout in Europe only (OR 8.3, P = 0.033). In both cohorts, burned out residents were more likely to not choose a career in urology again (USA 54% vs 19%, P < 0.001; Europe 43% vs 25%, P = 0.047)., Conclusion: In this study of USA and European urology residents, we found high rates of burnout on both continents. Despite regional differences in the predictors of burnout, awareness of the unique institutional drivers may help inform directions of future interventions., (© 2019 The Authors BJU International © 2019 BJU International Published by John Wiley & Sons Ltd.)

Published
2019
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49. Differences in genetic and environmental variation in adult BMI by sex, age, time period, and region: an individual-based pooled analysis of 40 twin cohorts.

Author

Silventoinen K, Jelenkovic A, Sund R, Yokoyama Y, Hur YM, Cozen W, Hwang AE, Mack TM, Honda C, Inui F, Iwatani Y, Watanabe M, Tomizawa R, Pietiläinen KH, Rissanen A, Siribaddana SH, Hotopf M, Sumathipala A, Rijsdijk F, Tan Q, Zhang D, Pang Z, Piirtola M, Aaltonen S, Öncel SY, Aliev F, Rebato E, Hjelmborg JB, Christensen K, Skytthe A, Kyvik KO, Silberg JL, Eaves LJ, Cutler TL, Ordoñana JR, Sánchez-Romera JF, Colodro-Conde L, Song YM, Yang S, Lee K, Franz CE, Kremen WS, Lyons MJ, Busjahn A, Nelson TL, Whitfield KE, Kandler C, Jang KL, Gatz M, Butler DA, Stazi MA, Fagnani C, D'Ippolito C, Duncan GE, Buchwald D, Martin NG, Medland SE, Montgomery GW, Jeong HU, Swan GE, Krasnow R, Magnusson PK, Pedersen NL, Dahl Aslan AK, McAdams TA, Eley TC, Gregory AM, Tynelius P, Baker LA, Tuvblad C, Bayasgalan G, Narandalai D, Spector TD, Mangino M, Lachance G, Burt SA, Klump KL, Harris JR, Brandt I, Nilsen TS, Krueger RF, McGue M, Pahlen S, Corley RP, Huibregtse BM, Bartels M, van Beijsterveldt CE, Willemsen G, Goldberg JH, Rasmussen F, Tarnoki AD, Tarnoki DL, Derom CA, Vlietinck RF, Loos RJ, Hopper JL, Sung J, Maes HH, Turkheimer E, Boomsma DI, Sørensen TI, and Kaprio J

Subjects
Adult, Age Factors, Aged, Aged, 80 and over, Australia, Culture, Europe, Female, Humans, Male, Middle Aged, North America, Prevalence, Sex Factors, Twins, Dizygotic genetics, Twins, Monozygotic genetics, Young Adult, Body Mass Index, Body Weight genetics, Environment, Gene-Environment Interaction, Obesity genetics, Quantitative Trait, Heritable
Abstract

Background: Genes and the environment contribute to variation in adult body mass index [BMI (in kg/m 2 )], but factors modifying these variance components are poorly understood. Objective: We analyzed genetic and environmental variation in BMI between men and women from young adulthood to old age from the 1940s to the 2000s and between cultural-geographic regions representing high (North America and Australia), moderate (Europe), and low (East Asia) prevalence of obesity. Design: We used genetic structural equation modeling to analyze BMI in twins ≥20 y of age from 40 cohorts representing 20 countries (140,379 complete twin pairs). Results: The heritability of BMI decreased from 0.77 (95% CI: 0.77, 0.78) and 0.75 (95% CI: 0.74, 0.75) in men and women 20-29 y of age to 0.57 (95% CI: 0.54, 0.60) and 0.59 (95% CI: 0.53, 0.65) in men 70-79 y of age and women 80 y of age, respectively. The relative influence of unique environmental factors correspondingly increased. Differences in the sets of genes affecting BMI in men and women increased from 20-29 to 60-69 y of age. Mean BMI and variances in BMI increased from the 1940s to the 2000s and were greatest in North America and Australia, followed by Europe and East Asia. However, heritability estimates were largely similar over measurement years and between regions. There was no evidence of environmental factors shared by co-twins affecting BMI. Conclusions: The heritability of BMI decreased and differences in the sets of genes affecting BMI in men and women increased from young adulthood to old age. The heritability of BMI was largely similar between cultural-geographic regions and measurement years, despite large differences in mean BMI and variances in BMI. Our results show a strong influence of genetic factors on BMI, especially in early adulthood, regardless of the obesity level in the population., (© 2017 American Society for Nutrition.)

Published
2017
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50. Does the sex of one's co-twin affect height and BMI in adulthood? A study of dizygotic adult twins from 31 cohorts.

Author

Bogl LH, Jelenkovic A, Vuoksimaa E, Ahrenfeldt L, Pietiläinen KH, Stazi MA, Fagnani C, D'Ippolito C, Hur YM, Jeong HU, Silberg JL, Eaves LJ, Maes HH, Bayasgalan G, Narandalai D, Cutler TL, Kandler C, Jang KL, Christensen K, Skytthe A, Kyvik KO, Cozen W, Hwang AE, Mack TM, Derom CA, Vlietinck RF, Nelson TL, Whitfield KE, Corley RP, Huibregtse BM, McAdams TA, Eley TC, Gregory AM, Krueger RF, McGue M, Pahlen S, Willemsen G, Bartels M, van Beijsterveldt TCEM, Pang Z, Tan Q, Zhang D, Martin NG, Medland SE, Montgomery GW, Hjelmborg JVB, Rebato E, Swan GE, Krasnow R, Busjahn A, Lichtenstein P, Öncel SY, Aliev F, Baker LA, Tuvblad C, Siribaddana SH, Hotopf M, Sumathipala A, Rijsdijk F, Magnusson PKE, Pedersen NL, Aslan AKD, Ordoñana JR, Sánchez-Romera JF, Colodro-Conde L, Duncan GE, Buchwald D, Tarnoki AD, Tarnoki DL, Yokoyama Y, Hopper JL, Loos RJF, Boomsma DI, Sørensen TIA, Silventoinen K, and Kaprio J

Subjects
Adult, Aged, Aged, 80 and over, Cohort Studies, Female, Humans, Male, Middle Aged, Young Adult, Body Height, Body Mass Index, Twins, Dizygotic
Abstract

Background: The comparison of traits in twins from opposite-sex (OS) and same-sex (SS) dizygotic twin pairs is considered a proxy measure of prenatal hormone exposure. To examine possible prenatal hormonal influences on anthropometric traits, we compared mean height, body mass index (BMI), and the prevalence of being overweight or obese between men and women from OS and SS dizygotic twin pairs., Methods: The data were derived from the COllaborative project of Development of Anthropometrical measures in Twins (CODATwins) database, and included 68,494 SS and 53,808 OS dizygotic twin individuals above the age of 20 years from 31 twin cohorts representing 19 countries. Zygosity was determined by questionnaires or DNA genotyping depending on the study. Multiple regression and logistic regression models adjusted for cohort, age, and birth year with the twin type as a predictor were carried out to compare height and BMI in twins from OS pairs with those from SS pairs and to calculate the adjusted odds ratios and 95% confidence intervals for being overweight or obese., Results: OS females were, on average, 0.31 cm (95% confidence interval (CI) 0.20, 0.41) taller than SS females. OS males were also, on average, taller than SS males, but this difference was only 0.14 cm (95% CI 0.02, 0.27). Mean BMI and the prevalence of overweight or obesity did not differ between males and females from SS and OS twin pairs. The statistically significant differences between OS and SS twins for height were small and appeared to reflect our large sample size rather than meaningful differences of public health relevance., Conclusions: We found no evidence to support the hypothesis that prenatal hormonal exposure or postnatal socialization (i.e., having grown up with a twin of the opposite sex) has a major impact on height and BMI in adulthood.

Published
2017
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