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

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 2019. Survival by colon cancer stage and screening interval in Lynch syndrome: a prospective Lynch syndrome database report. Hereditary Cancer in Clinical Practice 17 , -. 10.1186/s13053-019-0127-3

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Abstract

Background: We previously reported that in pathogenic mismatch repair (path_MMR) variant carriers, the incidence of colorectal cancer (CRC) was not reduced when colonoscopy was undertaken more frequently than once every 3 years, and that CRC stage and interval since last colonoscopy were not correlated. Methods: The Prospective Lynch Syndrome Database (PLSD) that records outcomes of surveillance was examined to determine survival after colon cancer in relation to the time since previous colonoscopy and pathological stage. Only path_MMR variants scored by the InSiGHT variant database as class 4 or 5 (clinically actionable) were included in the analysis. Results: Ninety-nine path_MMR carriers had no cancer prior to or at first colonoscopy, but subsequently developed colon cancer. Among these, 96 were 65 years of age or younger at diagnosis, and included 77 path_MLH1, 17 path_ MSH2, and 2 path_MSH6 carriers. The number of cancers detected within < 1.5, 1.5–2.5, 2.5–3.5 and at > 3.5 years after previous colonoscopy were 9, 43, 31 and 13, respectively. Of these, 2, 8, 4 and 3 were stage III, respectively, and only one stage IV (interval 2.5–3.5 years) disease. Ten-year crude survival after colon cancer were 93, 94 and 82% for stage I, II and III disease, respectively (p < 0.001). Ten-year crude survival when the last colonoscopy had been < 1.5, 1.5–2.5, 2.5–3.5 or > 3.5 years before diagnosis, was 89, 90, 90 and 92%, respectively (p = 0.91).

Item Type: Article
Date Type: Published Online
Status: Published
Schools: Medicine
Publisher: BioMed Central
ISSN: 1897-4287
Date of First Compliant Deposit: 1 November 2019
Date of Acceptance: 11 September 2019
Last Modified: 04 Nov 2019 13:45
URI: http://orca-mwe.cf.ac.uk/id/eprint/126491

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