Published in:
01-10-2011 | Original Paper
High frequency microsatellite instability has a prognostic value in endometrial endometrioid adenocarcinoma, but only in FIGO stage 1 cases
Authors:
Anita Steinbakk, Anais Malpica, Aida Slewa, Einar Gudlaugsson, Emiel A. M. Janssen, Mark Arends, Arnold Jan Kruse, Yu Yinhua, Weiwei Feng, Jan P. Baak
Published in:
Cellular Oncology
|
Issue 5/2011
Login to get access
Abstract
Objectives
To analyze the prognostic value of microsatellite instability (MSI) in a population-based study of FIGO stage 1–4 endometrial endometrioid adenocarcinomas. Study Design: Survival analysis in 273 patients of MSI status and clinico-pathologic features. Using a highly sensitive pentaplex polymerase chain reaction to establish MSI status, cases were divided into microsatellite stable (MSS), MSI-low (MSI-L, 1 marker positive) and MSI-high (MSI-H, 2–5 markers positive).
Results
After 61 months median follow-up (1–209), 34 (12.5%) of the patients developed metastases but only 6.4% of the FIGO-1. MSI (especially as MSI-H versus MSS/MSI-Lcombined) was prognostic in FIGO-1 but not in FIGO2-4. The 5 and10 year recurrence-free survival rates were 98% and 95% in the MSS/MSI-L versus 85% and 73% in the MSI-H patients (P = 0.005).
Conclusions
MSI-H status assessed by pentaplex polymerase chain reaction is an indicator of poor prognosis in FIGO 1, but not in FIGO 2–4 endometrial endometrioid adenocarcinomas.