The prognostic significance of TP53 mutations in Chinese patients with chronic lymphocytic leukemia is independent of del(17p13)
- نوع فایل : کتاب
- زبان : انگلیسی
- مؤلف : Hua-Jie Dong & Li-Tao Zhou & Dan-Xia Zhu & Dong-Mei Wang & Cheng Fang & Hua-Yuan Zhu & Yun Zhuang & Kou-Rong Miao & Wei Xu & Jian-Yong Li
- چاپ و سال / کشور: 2011
Description
The poor prognosis of chronic lymphocytic leukemia (CLL) patients with del(17p13) is well established. Several studies have shown that cases with TP53 mutations and TP53 mutations without del(17p13) may be adverse prognostic factors. We studied 173 wellcharacterized CLL patients by direct sequencing to detect TP53 mutations (exons 2–11). TP53 mutations were detected in 14.5% (25 of 173) of samples. Most patients with del(17p13) had TP53 mutations (72.2%). Mutations in the absence of del(17p13) were found in 8.3% in our cohort, which were higher than other countries. Compared with cases without TP53 alterations, TP53 mutations and deletions were both associated with advanced stages and unmutated immunoglobulin heavy-chain variable region status. Survival analysis showed that the occurrence of TP53 mutations and del(17p13) were associated with shorter overall survival (OS), treatmentfree survival (TFS), and resistance to chemotherapy. TP53 mutations were the variables strongly associated with OS and TFS by multivariate Cox regression analysis. Moreover, we also found that cases with TP53 mutations in the absence of del(17p13) had a similar clinical and biological course and similar poor short OS as cases carrying del(17p13) in Chinese patients with CLL
Ann Hematol (2011) 90:709–717 DOI 10.1007/s00277-010-1125-8 Received: 3 September 2010 / Accepted: 16 November 2010 / Published online: 27 November 2010 # Springer-Verlag 2010
