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6 results on '"Konstantopoulou I."'

1. Genetic variation in mitotic regulatory pathway genes is associated with breast tumor grade

Author

Purrington, K.S., Slettedahl, S., Bolla, M.K., Michailidou, K., Czene, K., Nevanlinna, H., Bojesen, S.E., Andrulis, I.L., Cox, A., Hall, P., Carpenter, J., Yannoukakos, D., Haiman, C.A., Fasching, P.A., Mannermaa, A., Winqvist, R., Brenner, H., Lindblom, A., Chenevix-Trench, G., Benitez, J., Swerdlow, A., Kristensen, V., Guenel, P., Meindl, A., Darabi, H., Eriksson, M., Fagerholm, R., Aittomaki, K., Blomqvist, C., Nordestgaard, B.G., Nielsen, S.F., Flyger, H., Wang, X.S., Olswold, C., Olson, J.E., Mulligan, A.M., Knight, J.A., Tchatchou, S., Reed, M.W.R., Cross, S.S., Liu, J.J., Li, J.M., Humphreys, K., Clarke, C., Scott, R., Fostira, F., Fountzilas, G., Konstantopoulou, I., Henderson, B.E., Schumacher, F., Marchand, L. le, Ekici, A.B., Hartmann, A., Beckmann, M.W., Hartikainen, J.M., Kosma, V.M., Kataja, V., Jukkola-Vuorinen, A., Pylkas, K., Kauppila, S., Dieffenbach, A.K., Stegmaier, C., Arndt, V., Margolin, S., Balleine, R., Perez, J.I.A., Zamora, M.P., Menendez, P., Ashworth, A., Jones, M., Orr, N., Arveux, P., Kerbrat, P., Truong, T., Bugert, P., Toland, A.E., Ambrosone, C.B., Labreche, F., Goldberg, M.S., Dumont, M., Ziogas, A., Lee, E., Dite, G.S., Apicella, C., Southey, M.C., Long, J.R., Shrubsole, M., Deming-Halverson, S., Ficarazzi, F., Barile, M., Peterlongo, P., Durda, K., Jaworska-Bieniek, K., Tollenaar, R.A.E.M., Seynaeve, C., Bruning, T., Ko, Y.D., Deurzen, C.H.M. van, Martens, J.W.M., Kriege, M., Figueroa, J.D., Chanock, S.J., Lissowska, J., Tomlinson, I., Kerin, M.J., Miller, N., Schneeweiss, A., Tapper, W.J., Gerty, S.M., Durcan, L., Mclean, C., Milne, R.L., Baglietto, L., Silva, I.D., Fletcher, O., Johnson, N., Van'T Veer, L.J., Cornelissen, S., Forsti, A., Torres, D., Rudiger, T., Rudolph, A., Flesch-Janys, D., Nickels, S., Weltens, C., Floris, G., Moisse, M., Dennis, J., Wang, Q., Dunning, A.M., Shah, M., Brown, J., Simard, J., Anton-Culver, H., Neuhausen, S.L., Hopper, J.L., Bogdanova, N., Dork, T., Zheng, W., Radice, P., Jakubowska, A., Lubinski, J., Devillee, P., Brauch, H., Hooning, M., Garcia-Closas, M., Sawyer, E., Burwinkel, B., Marmee, F., Eccles, D.M., Giles, G.G., Peto, J., Schmidt, M., Broeks, A., Hamann, U., Chang-Claude, J., Lambrechts, D., Pharoah, P.D.P., Easton, D., Pankratz, V.S., Slager, S., Vachon, C.M., Couch, F.J., ABCTB Investigators, Australian Ovarian Canc Study Grp, kConFab Investigators, GENICA Network, Medical Oncology, Pathology, and Clinical Genetics

Subjects
Oncology, Candidate gene, Fibroblast Growth Factor, amplification, cancer susceptibility loci, Bioinformatics, medicine.disease_cause, Medical and Health Sciences, prostate-cancer, Prostate cancer, Risk Factors, Medizinische Fakultät, Genetics (clinical), Genetics & Heredity, tacc2, Association Studies Articles, Single Nucleotide, General Medicine, Biological Sciences, ddc, risk loci, cell-division, kConFab Investigators, Female, GENICA Network, Type 2, Receptor, Australian Ovarian Cancer Study Group, Breast Neoplasms, Carrier Proteins, Case-Control Studies, Haplotypes, Humans, Neoplasm Staging, Polymorphism, Single Nucleotide, Receptor, Fibroblast Growth Factor, Type 2, Tumor Suppressor Proteins, Genetic Variation, Molecular Biology, Genetics, medicine.medical_specialty, Mitotic index, ABCTB Investigators, Single-nucleotide polymorphism, Biology, Breast cancer, SDG 3 - Good Health and Well-being, Internal medicine, medicine, ddc:610, Polymorphism, Lung cancer, Odds ratio, medicine.disease, genome-wide association, lung-cancer, progression, Carcinogenesis
Abstract

Mitotic index is an important component of histologic grade and has an etiologic role in breast tumorigenesis. Several small candidate gene studies have reported associations between variation in mitotic genes and breast cancer risk. We measured associations between 2156 single nucleotide polymorphisms (SNPs) from 194 mitotic genes and breast cancer risk, overall and by histologic grade, in the Breast Cancer Association Consortium (BCAC) iCOGS study (n = 39 067 cases; n = 42 106 controls). SNPs in TACC2 [rs17550038: odds ratio (OR) = 1.24, 95% confidence interval (CI) 1.16-1.33, P = 4.2 × 10(-10)) and EIF3H (rs799890: OR = 1.07, 95% CI 1.04-1.11, P = 8.7 × 10(-6)) were significantly associated with risk of low-grade breast cancer. The TACC2 signal was retained (rs17550038: OR = 1.15, 95% CI 1.07-1.23, P = 7.9 × 10(-5)) after adjustment for breast cancer risk SNPs in the nearby FGFR2 gene, suggesting that TACC2 is a novel, independent genome-wide significant genetic risk locus for low-grade breast cancer. While no SNPs were individually associated with high-grade disease, a pathway-level gene set analysis showed that variation across the 194 mitotic genes was associated with high-grade breast cancer risk (P = 2.1 × 10(-3)). These observations will provide insight into the contribution of mitotic defects to histological grade and the etiology of breast cancer.

Published
2014

2. Hereditary cancer predisposition syndromes and preimplantation genetic diagnosis: Where are we now?

Author

Konstantopoulou I, Pertesi M, Fostira F, Grivas A, and Drakoulis Yannoukakos

Subjects
Adult, Male, Genes, Recessive, Genetic Counseling, Fertilization in Vitro, Syndrome, Pregnancy, Neoplasms, Prenatal Diagnosis, Humans, Female, Genetic Predisposition to Disease, Child, Genes, Dominant
Abstract

Hereditary cancer predisposition syndromes have been model diseases in order to understand carcinogenesis in many different organs such as colon, breast, ovaries, stomach and others. Better understanding and follow up of these diseases have led to the increasing acceptance of cancer genetic testing and the improving survival of young patients with cancer. Once the mutation is identified in the gene, patients and their relatives have the option of preimplantation genetic diagnosis (PGD) in order to select embryos without familial cancer-predisposing mutations. This procedure has already been performed in several syndromes, including the common syndromes of genetic predisposition to colon and breast cancer. Despite the numerous ethical objections and legal arguments, PGD for adult-onset cancers is today a reality and couples with an inherited predisposing mutation deserve the same respect, support and right to choose if their child will be born having an extremely high risk for cancer development as in the case of other life-threatening diseases for which prenatal screening has become a standard.

5. Lack of association between RNASEL Arg462Gln variant and the risk of breast cancer

Author

Sevinç, A., Yannoukakos, D., Konstantopoulou, I., Manguoglu, E., Lüleci, G., Çolak, T., Akyerli, C., Çolakoglu, G., Mesut Tez, Sayek, I., Gerassimos, V., Nasioulas, G., Papadopoulou, E., Florentin, L., Kontogianni, E., Bozkurt, B., Kocabas, N. A., Karakaya, A. E., Yulug, I. G., and Özçelik, T.

Subjects
Adult, Ribonuclease L, Adolescent, Genotype, Glutamine, Protein variant, Breast Neoplasms, Major clinical study, urologic and male genital diseases, Arginine, Article, Turkey (republic), Amino acid sequence, Cancer risk, Breast cancer, Disease association, Endoribonucleases, Humans, Gene mutation, Human tissue, Middle aged, Alleles, Aged, Priority journal, Gene amplification, Pleiotropy, Aged, 80 and over, Greece, Amplification refractory mutation system, DNA, Neoplasm, RNASEL, Risk factors, Case-Control Studies, Mutation, Female, Risk factor, Controlled study, Human
Abstract

Background: The RNASEL G1385A variant was recently found to be implicated in the development of prostate cancer. Considering the function of RNase L and the pleiotropic effects of mutations associated with cancer, we sought to investigate whether the RNASEL G1385A variant is a risk factor for breast cancer. Patients and Methods: A total of 453 breast cancer patients and 382 age- and sex-matched controls from Greece and Turkey were analyzed. Genotyping for the RNASEL G1385A variant was performed using an Amplification Refractory Mutation System (ARMS). Results: Statistical evaluation of the RNASEL G1385A genotype distribution among breast cancer patients and controls revealed no significant association between the presence of the risk genotype and the occurrence of breast cancer. Conclusion: Although an increasing number of studies report an association between the RNASEL G1385A variant and prostate cancer risk, this variant does not appear to be implicated in the development of breast cancer.

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