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2. Identification of DHX40 as a candidate susceptibility gene for colorectal and hematological neoplasia

Author

Olkinuora, Alisa, Nieminen, Taina T., Douglas, Suvi, Kauppinen, Anni, Kontro, Mika, Väänänen, Juho, Kankainen, Matti, Ristimäki, Ari, Mäkinen, Markus, Lahermo, Päivi, Heckman, Caroline, Saarela, Janna, Salonen, Milla, Lepistö, Anna, Järvinen, Heikki, Mecklin, Jukka-Pekka, Kilpivaara, Outi, Wartiovaara-Kautto, Ulla, Porkka, Kimmo, and Peltomäki, Päivi

Published
2023
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5. Mortality by age, gene and gender in carriers of pathogenic mismatch repair gene variants receiving surveillance for early cancer diagnosis and treatment: a report from the prospective Lynch syndrome database

Author

Dominguez-Valentin, Mev, Haupt, Saskia, Seppälä, Toni T., Sampson, Julian R., Sunde, Lone, Bernstein, Inge, Jenkins, Mark A., Engel, Christoph, Aretz, Stefan, Nielsen, Maartje, Capella, Gabriel, Balaguer, Francesc, Evans, Dafydd Gareth, Burn, John, Holinski-Feder, Elke, Bertario, Lucio, Bonanni, Bernardo, Lindblom, Annika, Levi, Zohar, Macrae, Finlay, Winship, Ingrid, Plazzer, John-Paul, Sijmons, Rolf, Laghi, Luigi, Della Valle, Adriana, Heinimann, Karl, Dębniak, Tadeusz, Fruscio, Robert, Lopez-Koestner, Francisco, Alvarez-Valenzuela, Karin, Katz, Lior H., Laish, Ido, Vainer, Elez, Vaccaro, Carlos, Carraro, Dirce Maria, Monahan, Kevin, Half, Elizabeth, Stakelum, Aine, Winter, Des, Kennelly, Rory, Gluck, Nathan, Sheth, Harsh, Abu-Freha, Naim, Greenblatt, Marc, Rossi, Benedito Mauro, Bohorquez, Mabel, Cavestro, Giulia Martina, Lino-Silva, Leonardo S., Horisberger, Karoline, Tibiletti, Maria Grazia, Nascimento, Ivana do, Thomas, Huw, Rossi, Norma Teresa, Apolinário da Silva, Leandro, Zaránd, Attila, Ruiz-Bañobre, Juan, Heuveline, Vincent, Mecklin, Jukka-Pekka, Pylvänäinen, Kirsi, Renkonen-Sinisalo, Laura, Lepistö, Anna, Peltomäki, Päivi, Therkildsen, Christina, Madsen, Mia Gebauer, Burgdorf, Stefan Kobbelgaard, Hopper, John L., Win, Aung Ko, Haile, Robert W., Lindor, Noralane, Gallinger, Steven, Le Marchand, Loïc, Newcomb, Polly A., Figueiredo, Jane, Buchanan, Daniel D., Thibodeau, Stephen N., von Knebel Doeberitz, Magnus, Loeffler, Markus, Rahner, Nils, Schröck, Evelin, Steinke-Lange, Verena, Schmiegel, Wolff, Vangala, Deepak, Perne, Claudia, Hüneburg, Robert, Redler, Silke, Büttner, Reinhard, Weitz, Jürgen, Pineda, Marta, Duenas, Nuria, Vidal, Joan Brunet, Moreira, Leticia, Sánchez, Ariadna, Hovig, Eivind, Nakken, Sigve, Green, Kate, Lalloo, Fiona, Hill, James, Crosbie, Emma, Mints, Miriam, Goldberg, Yael, Tjandra, Douglas, ten Broeke, Sanne W., Kariv, Revital, Rosner, Guy, Advani, Suresh H., Thomas, Lidiya, Shah, Pankaj, Shah, Mithun, Neffa, Florencia, Esperon, Patricia, Pavicic, Walter, Torrezan, Giovana Tardin, Bassaneze, Thiago, Martin, Claudia Alejandra, Moslein, Gabriela, and Moller, Pål

Published
2023
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8. Risk-reducing hysterectomy and bilateral salpingo-oophorectomy in female heterozygotes of pathogenic mismatch repair variants: a Prospective Lynch Syndrome Database report

Author

Dominguez-Valentin, Mev, Crosbie, Emma J., Engel, Christoph, Aretz, Stefan, Macrae, Finlay, Winship, Ingrid, Capella, Gabriel, Thomas, Huw, Nakken, Sigve, Hovig, Eivind, Nielsen, Maartje, Sijmons, Rolf H., Bertario, Lucio, Bonanni, Bernardo, Tibiletti, Maria Grazia, Cavestro, Giulia Martina, Mints, Miriam, Gluck, Nathan, Katz, Lior, Heinimann, Karl, Vaccaro, Carlos A., Green, Kate, Lalloo, Fiona, Hill, James, Schmiegel, Wolff, Vangala, Deepak, Perne, Claudia, Strauß, Hans-Georg, Tecklenburg, Johanna, Holinski-Feder, Elke, Steinke-Lange, Verena, Mecklin, Jukka-Pekka, Plazzer, John-Paul, Pineda, Marta, Navarro, Matilde, Vidal, Joan Brunet, Kariv, Revital, Rosner, Guy, Piñero, Tamara Alejandra, Gonzalez, María Laura, Kalfayan, Pablo, Ryan, Neil, ten Broeke, Sanne W., Jenkins, Mark A., Sunde, Lone, Bernstein, Inge, Burn, John, Greenblatt, Marc, de Vos tot Nederveen Cappel, Wouter H., Della Valle, Adriana, Lopez-Koestner, Francisco, Alvarez, Karin, Büttner, Reinhard, Görgens, Heike, Morak, Monika, Holzapfel, Stefanie, Hüneburg, Robert, von Knebel Doeberitz, Magnus, Loeffler, Markus, Rahner, Nils, Weitz, Jürgen, Pylvänäinen, Kirsi, Renkonen-Sinisalo, Laura, Lepistö, Anna, Auranen, Annika, Hopper, John L., Win, Aung Ko, Haile, Robert W., Lindor, Noralane M., Gallinger, Steven, Le Marchand, Loïc, Newcomb, Polly A., Figueiredo, Jane C., Thibodeau, Stephen N., Therkildsen, Christina, Okkels, Henrik, Ketabi, Zohreh, Denton, Oliver G., Rødland, Einar Andreas, Vasen, Hans, Neffa, Florencia, Esperon, Patricia, Tjandra, Douglas, Möslein, Gabriela, Sampson, Julian R., Evans, D. Gareth, Seppälä, Toni T., and Møller, Pål

Published
2021
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12. Pro-inflammatory fatty acid profile and colorectal cancer risk: A Mendelian randomisation analysis

Author

May-Wilson, Sebastian, Sud, Amit, Law, Philip J., Palin, Kimmo, Tuupanen, Sari, Gylfe, Alexandra, Hänninen, Ulrika A., Cajuso, Tatiana, Tanskanen, Tomas, Kondelin, Johanna, Kaasinen, Eevi, Sarin, Antti-Pekka, Eriksson, Johan G., Rissanen, Harri, Knekt, Paul, Pukkala, Eero, Jousilahti, Pekka, Salomaa, Veikko, Ripatti, Samuli, Palotie, Aarno, Renkonen-Sinisalo, Laura, Lepistö, Anna, Böhm, Jan, Mecklin, Jukka-Pekka, Al-Tassan, Nada A., Palles, Claire, Farrington, Susan M., Timofeeva, Maria N., Meyer, Brian F., Wakil, Salma M., Campbell, Harry, Smith, Christopher G., Idziaszczyk, Shelley, Maughan, Timothy S., Fisher, David, Kerr, Rachel, Kerr, David, Passarelli, Michael N., Figueiredo, Jane C., Buchanan, Daniel D., Win, Aung K., Hopper, John L., Jenkins, Mark A., Lindor, Noralane M., Newcomb, Polly A., Gallinger, Steven, Conti, David, Schumacher, Fred, Casey, Graham, Aaltonen, Lauri A., Cheadle, Jeremy P., Tomlinson, Ian P., Dunlop, Malcolm G., and Houlston, Richard S.

Published
2017
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14. Short- and Long-Term Survival among Elderly Colorectal Cancer Patients in Finland, 2006–2015: A Nationwide Population-Based Registry Study.

Author

Hukkinen, Tanja, Olenius, Tobias, Koskensalo, Selja, Lepistö, Anna, Koskenvuo, Laura, and Böckelman, Camilla

Subjects
REPORTING of diseases, CONFIDENCE intervals, TIME, AGE distribution, METASTASIS, COLORECTAL cancer, SEX distribution, TUMOR classification, DESCRIPTIVE statistics, POSTOPERATIVE period, RESEARCH funding, OVERALL survival, LONGITUDINAL method, OLD age
Abstract

Simple Summary: This study aimed to assess the short- and long-term survival of elderly (≥75 years old) CRC patients. Survival was analyzed according to tumor location, cancer stage, and age group. Our results showed that CRC survival among elderly patients with localized or locally advanced disease is generally good when considering the age of patients. In particular, the 75–79 and 80–84 age groups exhibited fairly good survival when compared with younger age groups. The long-term overall survival of patients aged ≥ 85 was, as expected, worse than in younger patients. However, the postoperative short-term survival for patients eligible for surgery was good, taking into account that we also included emergency procedures. These findings emphasize the importance of optimizing care for elderly CRC patients. This population-based registry study aimed to report 30-day and one-year postoperative survival, five-year overall survival (OS), and disease-specific survival (DSS) among elderly (≥75 years old) colorectal cancer (CRC) patients. All new colorectal cancer cases from 2006–2015 were included and followed until death or the end of follow-up (end of 2016). Among 27,088 CRC patients, 11,306 patients were ≥75 years old. Among patients ≥ 75 years, 36.8% (n = 4160) had right-sided colon cancer, 21.9% (n = 2478) left-sided colon cancer, and 32.3% (n = 3650) rectal cancer. In this study population, 932 patients were aged ≥ 90. The 30-day postoperative OS for patients aged 75–79 was 96.1% (95% confidence interval [CI] 95.3–96.9) falling to 93.2% (95% CI 92.0–94.4) for patients aged 80–84. The one-year postoperative OS among patients aged 75–79 was 86.3% (95% CI 84.7–87.9) compared with 80.5% (95% CI 78.7–82.3) among patients aged 80–84. Five-year OS among patients aged 75–79 was 47.6% (95% CI 46.0–49.2) and 36.6% (95% CI 34.8–38.4) among patients aged 80–84, compared with 61.7% (95% CI 60.9–62.5) among younger patients (<75 years old). Survival among elderly CRC patients (≥75 years old) was in general fairly good when compared with younger patients, especially among patients aged 75–79 and 80–84 with localized or locally advanced disease. [ABSTRACT FROM AUTHOR]

Published
2024
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17. Survival by colon cancer stage and screening interval in Lynch syndrome: a prospective Lynch syndrome database report

Author

Dominguez-Valentin, Mev, Seppälä, Toni T., Sampson, Julian R., Macrae, Finlay, Winship, Ingrid, Evans, D. Gareth, Scott, Rodney J., Burn, John, Möslein, Gabriela, Bernstein, Inge, Pylvänäinen, Kirsi, Renkonen-Sinisalo, Laura, Lepistö, Anna, Lindblom, Annika, Plazzer, John-Paul, Tjandra, Douglas, Thomas, Huw, Green, Kate, Lalloo, Fiona, Crosbie, Emma J., Hill, James, Capella, Gabriel, Pineda, Marta, Navarro, Matilde, Vidal, Joan Brunet, Rønlund, Karina, Nielsen, Randi Thyregaard, Yilmaz, Mette, Elvang, Louise Laurberg, Katz, Lior, Nielsen, Maartje, ten Broeke, Sanne W., Nakken, Sigve, Hovig, Eivind, Sunde, Lone, Kloor, Matthias, Knebel Doeberitz, Magnus v, Ahadova, Aysel, Lindor, Noralane, Steinke-Lange, Verena, Holinski-Feder, Elke, Mecklin, Jukka-Pekka, and Møller, Pål

Published
2019
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18. Retrotransposon insertions can initiate colorectal cancer and are associated with poor survival

Author

Cajuso, Tatiana, Sulo, Päivi, Tanskanen, Tomas, Katainen, Riku, Taira, Aurora, Hänninen, Ulrika A., Kondelin, Johanna, Forsström, Linda, Välimäki, Niko, Aavikko, Mervi, Kaasinen, Eevi, Ristimäki, Ari, Koskensalo, Selja, Lepistö, Anna, Renkonen-Sinisalo, Laura, Seppälä, Toni, Kuopio, Teijo, Böhm, Jan, Mecklin, Jukka-Pekka, Kilpivaara, Outi, Pitkänen, Esa, Palin, Kimmo, and Aaltonen, Lauri A.

Published
2019
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20. Association analyses identify 31 new risk loci for colorectal cancer susceptibility

Author

Law, Philip J., Timofeeva, Maria, Fernandez-Rozadilla, Ceres, Broderick, Peter, Studd, James, Fernandez-Tajes, Juan, Farrington, Susan, Svinti, Victoria, Palles, Claire, Orlando, Giulia, Sud, Amit, Holroyd, Amy, Penegar, Steven, Theodoratou, Evropi, Vaughan-Shaw, Peter, Campbell, Harry, Zgaga, Lina, Hayward, Caroline, Campbell, Archie, Harris, Sarah, Deary, Ian J., Starr, John, Gatcombe, Laura, Pinna, Maria, Briggs, Sarah, Martin, Lynn, Jaeger, Emma, Sharma-Oates, Archana, East, James, Leedham, Simon, Arnold, Roland, Johnstone, Elaine, Wang, Haitao, Kerr, David, Kerr, Rachel, Maughan, Tim, Kaplan, Richard, Al-Tassan, Nada, Palin, Kimmo, Hänninen, Ulrika A., Cajuso, Tatiana, Tanskanen, Tomas, Kondelin, Johanna, Kaasinen, Eevi, Sarin, Antti-Pekka, Eriksson, Johan G., Rissanen, Harri, Knekt, Paul, Pukkala, Eero, Jousilahti, Pekka, Salomaa, Veikko, Ripatti, Samuli, Palotie, Aarno, Renkonen-Sinisalo, Laura, Lepistö, Anna, Böhm, Jan, Mecklin, Jukka-Pekka, Buchanan, Daniel D., Win, Aung-Ko, Hopper, John, Jenkins, Mark E., Lindor, Noralane M., Newcomb, Polly A., Gallinger, Steven, Duggan, David, Casey, Graham, Hoffmann, Per, Nöthen, Markus M., Jöckel, Karl-Heinz, Easton, Douglas F., Pharoah, Paul D. P., Peto, Julian, Canzian, Federico, Swerdlow, Anthony, Eeles, Rosalind A., Kote-Jarai, Zsofia, Muir, Kenneth, Pashayan, Nora, The PRACTICAL consortium, Harkin, Andrea, Allan, Karen, McQueen, John, Paul, James, Iveson, Timothy, Saunders, Mark, Butterbach, Katja, Chang-Claude, Jenny, Hoffmeister, Michael, Brenner, Hermann, Kirac, Iva, Matošević, Petar, Hofer, Philipp, Brezina, Stefanie, Gsur, Andrea, Cheadle, Jeremy P., Aaltonen, Lauri A., Tomlinson, Ian, Houlston, Richard S., and Dunlop, Malcolm G.

Published
2019
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21. Lack of association between screening interval and cancer stage in Lynch syndrome may be accounted for by over-diagnosis; a prospective Lynch syndrome database report

Author

Seppälä, Toni T., Ahadova, Aysel, Dominguez-Valentin, Mev, Macrae, Finlay, Evans, D. Gareth, Therkildsen, Christina, Sampson, Julian, Scott, Rodney, Burn, John, Möslein, Gabriela, Bernstein, Inge, Holinski-Feder, Elke, Pylvänäinen, Kirsi, Renkonen-Sinisalo, Laura, Lepistö, Anna, Lautrup, Charlotte Kvist, Lindblom, Annika, Plazzer, John-Paul, Winship, Ingrid, Tjandra, Douglas, Katz, Lior H., Aretz, Stefan, Hüneburg, Robert, Holzapfel, Stefanie, Heinimann, Karl, Valle, Adriana Della, Neffa, Florencia, Gluck, Nathan, de Vos tot Nederveen Cappel, Wouter H., Vasen, Hans, Morak, Monika, Steinke-Lange, Verena, Engel, Christoph, Rahner, Nils, Schmiegel, Wolff, Vangala, Deepak, Thomas, Huw, Green, Kate, Lalloo, Fiona, Crosbie, Emma J., Hill, James, Capella, Gabriel, Pineda, Marta, Navarro, Matilde, Blanco, Ignacio, ten Broeke, Sanne, Nielsen, Maartje, Ljungmann, Ken, Nakken, Sigve, Lindor, Noralane, Frayling, Ian, Hovig, Eivind, Sunde, Lone, Kloor, Matthias, Mecklin, Jukka-Pekka, Kalager, Mette, and Møller, Pål

Published
2019
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23. Genome‐wide association study and meta‐analysis in Northern European populations replicate multiple colorectal cancer risk loci

Author

Tanskanen, Tomas, van den Berg, Linda, Välimäki, Niko, Aavikko, Mervi, Ness‐Jensen, Eivind, Hveem, Kristian, Wettergren, Yvonne, Bexe Lindskog, Elinor, Tõnisson, Neeme, Metspalu, Andres, Silander, Kaisa, Orlando, Giulia, Law, Philip J., Tuupanen, Sari, Gylfe, Alexandra E., Hänninen, Ulrika A., Cajuso, Tatiana, Kondelin, Johanna, Sarin, Antti‐Pekka, Pukkala, Eero, Jousilahti, Pekka, Salomaa, Veikko, Ripatti, Samuli, Palotie, Aarno, Järvinen, Heikki, Renkonen‐Sinisalo, Laura, Lepistö, Anna, Böhm, Jan, Mecklin, Jukka‐Pekka, Al‐Tassan, Nada A., Palles, Claire, Martin, Lynn, Barclay, Ella, Tenesa, Albert, Farrington, Susan M., Timofeeva, Maria N., Meyer, Brian F., Wakil, Salma M., Campbell, Harry, Smith, Christopher G., Idziaszczyk, Shelley, Maughan, Tim S., Kaplan, Richard, Kerr, Rachel, Kerr, David, Buchanan, Daniel D., Win, Aung K., Hopper, John, Jenkins, Mark A., Newcomb, Polly A., Gallinger, Steve, Conti, David, Schumacher, Fredrick R., Casey, Graham, Cheadle, Jeremy P., Dunlop, Malcolm G., Tomlinson, Ian P., Houlston, Richard S., Palin, Kimmo, and Aaltonen, Lauri A.

Published
2018
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24. Contribution of allelic imbalance to colorectal cancer

Author

Palin, Kimmo, Pitkänen, Esa, Turunen, Mikko, Sahu, Biswajyoti, Pihlajamaa, Päivi, Kivioja, Teemu, Kaasinen, Eevi, Välimäki, Niko, Hänninen, Ulrika A., Cajuso, Tatiana, Aavikko, Mervi, Tuupanen, Sari, Kilpivaara, Outi, van den Berg, Linda, Kondelin, Johanna, Tanskanen, Tomas, Katainen, Riku, Grau, Marta, Rauanheimo, Heli, Plaketti, Roosa-Maria, Taira, Aurora, Sulo, Päivi, Hartonen, Tuomo, Dave, Kashyap, Schmierer, Bernhard, Botla, Sandeep, Sokolova, Maria, Vähärautio, Anna, Gladysz, Kornelia, Ongen, Halit, Dermitzakis, Emmanouil, Bramsen, Jesper Bertram, Ørntoft, Torben Falck, Andersen, Claus Lindbjerg, Ristimäki, Ari, Lepistö, Anna, Renkonen-Sinisalo, Laura, Mecklin, Jukka-Pekka, Taipale, Jussi, and Aaltonen, Lauri A.

Published
2018
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29. Systemic circulating microRNA landscape in Lynch syndrome.

Author

Sievänen, Tero, Korhonen, Tia‐Marje, Jokela, Tiina, Ahtiainen, Maarit, Lahtinen, Laura, Kuopio, Teijo, Lepistö, Anna, Sillanpää, Elina, Mecklin, Jukka‐Pekka, Seppälä, Toni T., and Laakkonen, Eija K.

Subjects
HEREDITARY nonpolyposis colorectal cancer, TUMOR suppressor genes, MICRORNA, GENE expression, GENETIC variation, NON-coding RNA
Abstract

Circulating microRNAs (c‐miRs) are small noncoding RNA molecules that migrate throughout the body and regulate gene expression. Global c‐miR expression patterns (c‐miRnomes) change with sporadic carcinogenesis and have predictive potential in early detection of cancers. However, there are no studies that have assessed whether c‐miRnomes display similar potential in carriers of inherited pathogenic mismatch‐repair gene variants (path_MMR), known as Lynch syndrome (LS), who are predisposed to highly increased cancer risk. Using high‐throughput sequencing and bioinformatic approaches, we conducted an exploratory analysis to characterize systemic c‐miRnomes of path_MMR carriers, sporadic rectal cancer patients and non‐LS controls. We showed for the first time that cancer‐free path_MMR carriers have a systemic c‐miRnome of 40 differentially expressed c‐miRs that can distinguish them from non‐LS controls. The systemic c‐miRnome of cancer‐free path_MMR carriers also resembles the systemic c‐miRnomes of cancer patients with or without path_MMR. Our pathway analysis linked the found differentially expressed c‐miRs to carcinogenesis. A total of 508 putative target genes were identified for 32 out of 40 differentially expressed c‐miRs, and 238 of them were enriched in cancer‐related pathways. The most enriched c‐miR‐target genes include well‐known oncogenes and tumor suppressor genes such as BCL2, AKT3, PIK3CA, KRAS, NRAS, CDKN1A and PIK3R1. Taken together, our findings suggest that LS and sporadic carcinogenesis share common biological pathways and alterations in these pathways can produce a c‐miR signature which can track potential oncogenic stress in cancer‐free path_MMR carriers. Therefore, c‐miRs hold potential in monitoring the LS risk stratification patterns during clinical surveillance or cancer management. [ABSTRACT FROM AUTHOR]

Published
2023
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36. Mono- and biallelic germline variants of DNA glycosylase genes in colon adenomatous polyposis families from two continents.

Author

Olkinuora, Alisa Petriina, Mayordomo, Andrea Constanza, Kauppinen, Anni Katariina, Cerliani, María Belén, Coraglio, Mariana, Collia, Ávila Karina, Gutiérrez, Alejandro, Alvarez, Karin, Cassana, Alessandra, Lopéz-Köstner, Francisco, Jauk, Federico, García-Rivello, Hernán, Ristimäki, Ari, Koskenvuo, Laura, Lepistö, Anna, Nieminen, Taina Tuulikki, Vaccaro, Carlos Alberto, Pavicic, Walter Hernán, and Peltomäki, Päivi

Subjects
DNA, GERM cells, GENES, COLON (Anatomy), SEARCH warrants (Law), RECESSIVE genes, TUMOR suppressor genes, DESMOID tumors
Abstract

Recently, biallelic germline variants of the DNA glycosylase genes MUTYH and NTHL1 were linked to polyposis susceptibility. Significant fractions remain without a molecular explanation, warranting searches for underlying causes. We used exome sequencing to investigate clinically well-defined adenomatous polyposis cases and families from Finland (N=34), Chile (N=21), and Argentina (N=12), all with known susceptibility genes excluded. Nine index cases (13%) revealed germline variants with proven or possible pathogenicity in the DNA glycosylase genes, involving NEIL1 (mono- or biallelic) in 3 cases, MUTYH (monoallelic) in 3 cases, NTHL1 (biallelic) in 1 case, and OGG1 (monoallelic) in 2 cases. NTHL1 was affected with the well-established, pathogenic c.268C>T, p.(Gln90Ter) variant. A recurrent heterozygous NEIL1 c.506G>A, p.(Gly169Asp) variant was observed in two families. In a Finnish family, the variant occurred in trans with a truncating NEIL1 variant (c.821delT). In an Argentine family, the variant co-occurred with a genomic deletion of exons 2 - 11 of PMS2. Mutational signatures in tumor tissues complied with biological functions reported for NEIL1. Our results suggest that germline variants in DNA glycosylase genes may occur in a non-negligible proportion of unexplained colon polyposis cases and may predispose to tumor development. [ABSTRACT FROM AUTHOR]

Published
2022
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40. The prognostic value of extramural venous invasion in preoperative MRI of rectal cancer patients.

Author

Lehtonen, Taru M., Koskenvuo, Laura E., Seppälä, Toni T., and Lepistö, Anna H.

Subjects
RECTAL cancer, PROGNOSIS, CANCER patients, MAGNETIC resonance imaging, PROGRESSION-free survival, UNIVARIATE analysis
Abstract

Aim: This study aimed to examine the prognostic value of extramural venous invasion observed in preoperative MRI on survival and recurrences. Method: In total, 778 rectal cancer patients were evaluated in multidisciplinary meetings in Helsinki University Hospital during the years 2016–2018. 635 patients met the inclusion criteria of stage I–III disease and were intended for curative treatment at the time of diagnosis. 128 had extramural venous invasion in preoperative MRI. Results: The median follow‐up time was 2.5 years. In a univariate analysis extramural venous invasion was associated with poorer disease‐specific survival (hazard ratio [HR] 2.174, 95% CI 1.118–4.224, P = 0.022), whereas circumferential margin ≤1 mm, tumour stage ≥T3c or nodal positivity were not. Disease recurrence occurred in 17.3% of the patients: 13.4% had metastatic recurrence only, 1.7% mere local recurrence and 2.2% both metastatic and local recurrence. In multivariate analysis, extramural venous invasion (HR 1.734, 95% CI 1.127–2.667, P = 0.012) and nodal positivity (HR 1.627, 95% CI 1.071–2.472, P = 0.023) were risk factors for poorer disease‐free survival (DFS). Circumferential margin ≤1 mm was a risk factor for local recurrence in multivariate analysis (HR 5.675, 95% CI 1.274–25.286, P = 0.023). Conclusion: In MRI, circumferential margin ≤1 mm is a risk factor for local recurrence, but the risk is quite well controlled with chemoradiotherapy and extended surgery. Extramural venous invasion instead is a significant risk factor for poorer DFS and new tools to reduce the systemic recurrence risk are needed. [ABSTRACT FROM AUTHOR]

Published
2022
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44. Prevalence, Cell Tropism, and Clinical Impact of Human Parvovirus Persistence in Adenomatous, Cancerous, Inflamed, and Healthy Intestinal Mucosa.

Author

Xu, Man, Leskinen, Katarzyna, Gritti, Tommaso, Groma, Valerija, Arola, Johanna, Lepistö, Anna, Sipponen, Taina, Saavalainen, Päivi, and Söderlund-Venermo, Maria

Subjects
VIRAL tropism, INTESTINAL mucosa, INFLAMMATORY bowel diseases, SINGLE-stranded DNA, VASCULAR endothelial cells, PARVOVIRUS B19, RESPIRATORY infections, TROPISMS
Abstract

Parvoviruses are single-stranded DNA viruses, infecting many animals from insects to humans. Human parvovirus B19 (B19V) causes erythema infectiosum, arthropathy, anemia, and fetal death, and human bocavirus (HBoV) 1 causes respiratory tract infections, while HBoV2-4 are enteric. Parvoviral genomes can persist in diverse non-permissive tissues after acute infection, but the host-cell tropism and the impact of their tissue persistence are poorly studied. We searched for parvoviral DNA in a total of 427 intestinal biopsy specimens, as paired disease-affected and healthy mucosa, obtained from 130 patients with malignancy, ulcerative colitis (UC), or adenomas, and in similar intestinal segments from 55 healthy subjects. Only three (1.6%) individuals exhibited intestinal HBoV DNA (one each of HBoV1, 2, and 3). Conversely, B19V DNA persisted frequently in the intestine, with 50, 47, 31, and 27% detection rates in the patients with malignancy, UC, or adenomas, and in the healthy subjects, respectively. Intra-individually, B19V DNA persisted significantly more often in the healthy intestinal segments than in the inflamed colons of UC patients. The highest loads of B19V DNA were seen in the ileum and colon specimens of two healthy individuals. With dual-RNAscope in situ hybridization and immunohistochemistry assays, we located the B19V persistence sites of these intestines in mucosal B cells of lymphoid follicles and vascular endothelial cells. Viral messenger RNA transcription remained, however, undetected. RNA sequencing (RNA-seq) identified 272 differentially expressed cellular genes between B19V DNA-positive and -negative healthy ileum biopsy specimens. Pathway enrichment analysis revealed that B19V persistence activated the intestinal cell viability and inhibited apoptosis. Lifelong B19V DNA persistence thus modulates host gene expression, which may lead to clinical outcomes. [ABSTRACT FROM AUTHOR]

Published
2022
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48. Detection of microsatellite instability with Idylla MSI assay in colorectal and endometrial cancer.

Author

Ukkola, Iiris, Nummela, Pirjo, Pasanen, Annukka, Kero, Mia, Lepistö, Anna, Kytölä, Soili, Bützow, Ralf, and Ristimäki, Ari

Abstract

Universal testing of microsatellite instability (MSI) is recommended for colorectal cancer (CRC) and endometrial cancer (EC) to screen for Lynch syndrome and to aid in assessing prognosis and optimal treatment. We compared the performance of Idylla MSI test to immunohistochemistry (IHC) of mismatch repair (MMR) proteins in consecutive series of 100 CRC and 108 EC samples, as well as in retrospective series of 28 CRC and 33 EC specimens with known deficient MMR protein expression. The concordance between the Idylla test and IHC was 100% in all CRC samples (n=128) but lower in EC samples (87.2%; n=141). In the EC samples, sensitivity of Idylla test was 72.7% and specificity 100%. EC MSI/dMMR agreement was 85.4% for MLH1, 87.5% for MSH2, and only 35.3% for MSH6. When we analyzed 14 EC samples that were discrepant, i.e., dMMR using IHC and microsatellite stable using Idylla, with microsatellite markers BAT25 and BAT26, we found four cases to be replication error (RER) positive. All RER positive cases were deficient for MSH6 protein expression. We also re-analyzed EC samples with variable tumor cellularity to determine the limit of detection of the Idylla test and found that a 30% or higher tumor cellularity is required. We conclude that Idylla MSI test offers a sensitive and specific method for CRC diagnostics but is less sensitive in EC samples especially in the case of MSH6 deficiency. [ABSTRACT FROM AUTHOR]

Published
2021
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49. Genetic and Epigenetic Characteristics of Inflammatory Bowel Disease–Associated Colorectal Cancer.

Author

Rajamäki, Kristiina, Taira, Aurora, Katainen, Riku, Välimäki, Niko, Kuosmanen, Anna, Plaketti, Roosa-Maria, Seppälä, Toni T., Ahtiainen, Maarit, Wirta, Erkki-Ville, Vartiainen, Emilia, Sulo, Päivi, Ravantti, Janne, Lehtipuro, Suvi, Granberg, Kirsi J., Nykter, Matti, Tanskanen, Tomas, Ristimäki, Ari, Koskensalo, Selja, Renkonen-Sinisalo, Laura, and Lepistö, Anna

Abstract

Inflammatory bowel disease (IBD) is a chronic, relapsing inflammatory disorder associated with an elevated risk of colorectal cancer (CRC). IBD-associated CRC (IBD-CRC) may represent a distinct pathway of tumorigenesis compared to sporadic CRC (sCRC). Our aim was to comprehensively characterize IBD-associated tumorigenesis integrating multiple high-throughput approaches, and to compare the results with in-house data sets from sCRCs. Whole-genome sequencing, single nucleotide polymorphism arrays, RNA sequencing, genome-wide methylation analysis, and immunohistochemistry were performed using fresh-frozen and formalin-fixed tissue samples of tumor and corresponding normal tissues from 31 patients with IBD-CRC. Transcriptome-based tumor subtyping revealed the complete absence of canonical epithelial tumor subtype associated with WNT signaling in IBD-CRCs, dominated instead by mesenchymal stroma-rich subtype. Negative WNT regulators AXIN2 and RNF43 were strongly down-regulated in IBD-CRCs and chromosomal gains at HNF4A , a negative regulator of WNT-induced epithelial–mesenchymal transition (EMT), were less frequent compared to sCRCs. Enrichment of hypomethylation at HNF4α binding sites was detected solely in sCRC genomes. PIGR and OSMR involved in mucosal immunity were dysregulated via epigenetic modifications in IBD-CRCs. Genome-wide analysis showed significant enrichment of noncoding mutations to 5′untranslated region of TP53 in IBD-CRCs. As reported previously, somatic mutations in APC and KRAS were less frequent in IBD-CRCs compared to sCRCs. Distinct mechanisms of WNT pathway dysregulation skew IBD-CRCs toward mesenchymal tumor subtype, which may affect prognosis and treatment options. Increased OSMR signaling may favor the establishment of mesenchymal tumors in patients with IBD. [Display omitted] [ABSTRACT FROM AUTHOR]

Published
2021
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