PMID- 31002690 OWN - NLM STAT- MEDLINE DCOM- 20200113 LR - 20200309 IS - 1932-6203 (Electronic) IS - 1932-6203 (Linking) VI - 14 IP - 4 DP - 2019 TI - Microsatellite instability is inversely associated with type 2 diabetes mellitus in colorectal cancer. PG - e0215513 LID - 10.1371/journal.pone.0215513 [doi] LID - e0215513 AB - BACKGROUND: Microsatellite instability (MSI) is a clonal change in the number of repeated DNA nucleotide units in microsatellites. High-frequency MSI (MSI-H) colorectal cancers (CRCs) are known to have different clinicopathological features compared with microsatellite stable (MSS) CRCs. In addition, previous studies have shown that type2 diabetes mellitus (T2DM) is a risk factor for malignant tumors including CRCs. The aim of this study was to investigate the relationship between T2DM and MSI-H colorectal cancer. METHODS: The study design is a single center, cross-sectional study. Data from a series of 936 patients with CRCs were collected and MSI status was assessed. RESULTS: In total, 29 (3.1%) and 907 (96.9%) tumors were classified as having MSI-H and low-frequency microsatellite instability or being MSS (MSS), respectively. Of the 936 patients, 275 (29.6%) were associated with T2DM. One (3.4%) of the 29 MSI-H patients and 274 (30.2%) of the 907 MSS patients had T2DM. Thus, the incidence of T2DM was significantly less frequent in MSI-H compared with MSS patients (Fisher's exact test: p = 0.0007). CONCLUSIONS: We conclude that MSS tumors are significantly more common than MSI-H tumors among individuals with T2DM. FAU - Nakayama, Yujiro AU - Nakayama Y AUID- ORCID: 0000-0002-0500-9691 AD - Department of Surgery, Tokyo Metropolitan Cancer and Infectious diseases Center Komagome Hospital, Tokyo, Japan. AD - Department of Minimally Invasive Surgical and Medical Oncology, Fukushima Medical University, Fukushima, Japan. AD - Department of Surgery, Southern Tohoku General Hospital, Fukushima, Japan. FAU - Iijima, Takeru AU - Iijima T AD - Hereditary Tumor Research Project, Tokyo Metropolitan Cancer and Infectious diseases Center Komagome Hospital, Tokyo, Japan. FAU - Wakaume, Rika AU - Wakaume R AD - Hereditary Tumor Research Project, Tokyo Metropolitan Cancer and Infectious diseases Center Komagome Hospital, Tokyo, Japan. FAU - Takahashi, Keiichi AU - Takahashi K AD - Department of Surgery, Tokyo Metropolitan Cancer and Infectious diseases Center Komagome Hospital, Tokyo, Japan. FAU - Matsumoto, Hiroshi AU - Matsumoto H AD - Department of Surgery, Tokyo Metropolitan Cancer and Infectious diseases Center Komagome Hospital, Tokyo, Japan. FAU - Nakano, Daisuke AU - Nakano D AD - Department of Surgery, Tokyo Metropolitan Cancer and Infectious diseases Center Komagome Hospital, Tokyo, Japan. FAU - Miyaki, Michiko AU - Miyaki M AD - Hereditary Tumor Research Project, Tokyo Metropolitan Cancer and Infectious diseases Center Komagome Hospital, Tokyo, Japan. FAU - Yamaguchi, Tatsuro AU - Yamaguchi T AD - Department of Surgery, Tokyo Metropolitan Cancer and Infectious diseases Center Komagome Hospital, Tokyo, Japan. AD - Hereditary Tumor Research Project, Tokyo Metropolitan Cancer and Infectious diseases Center Komagome Hospital, Tokyo, Japan. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20190419 PL - United States TA - PLoS One JT - PloS one JID - 101285081 SB - IM MH - Aged MH - Aged, 80 and over MH - Colorectal Neoplasms/complications/*genetics MH - Cross-Sectional Studies MH - Diabetes Mellitus, Type 2/complications/*genetics MH - Female MH - Humans MH - Male MH - *Microsatellite Instability MH - Microsatellite Repeats/*genetics MH - Middle Aged MH - Retrospective Studies PMC - PMC6474599 COIS- The authors have declared that no competing interests exist. EDAT- 2019/04/20 06:00 MHDA- 2020/01/14 06:00 PMCR- 2019/04/19 CRDT- 2019/04/20 06:00 PHST- 2018/12/06 00:00 [received] PHST- 2019/04/03 00:00 [accepted] PHST- 2019/04/20 06:00 [entrez] PHST- 2019/04/20 06:00 [pubmed] PHST- 2020/01/14 06:00 [medline] PHST- 2019/04/19 00:00 [pmc-release] AID - PONE-D-18-34914 [pii] AID - 10.1371/journal.pone.0215513 [doi] PST - epublish SO - PLoS One. 2019 Apr 19;14(4):e0215513. doi: 10.1371/journal.pone.0215513. eCollection 2019.