PMID- 26708886 OWN - NLM STAT- MEDLINE DCOM- 20160504 LR - 20221207 IS - 1009-2137 (Print) IS - 1009-2137 (Linking) VI - 23 IP - 6 DP - 2015 Dec TI - [Establishment of Primary Adult MDS Nested Case-Control Study Cohort and Study of Risk Factors Associated with MDS Evolution to Leukemia]. PG - 1638-46 LID - 10.7534/j.issn.1009-2137.2015.06.021 [doi] AB - OBJECTIVE: To establish a nested case-control study cohort in myelodysplastic syndrome (MDS) patients and investigate the clinical characteristics, WHO subtype and risk factors associated with MDS evolution to leukemia of this cohort. METHODS: All patients, >/=18 years of age, provided by 24 Shanghai hospitals with initial clinical findings consistent with a hematopoietic abnormality between June 2003 and April 2007, were the candidates for inclusion in this study. The blood and bone marrow samples of every patient should be provided at baseline. Diagnosis was made by incorporating morphologic, immunophenotypic, cytogenetic and molecular features according to WHO classification criteria. Cytogenetic analysis was performed using conventional G-banding karyotyping and fluorescence in situ hybridization (FISH) techniques. Cumulative risk of evolution was estimated by Kaplan-Meier method. Prognostic factors were evaluated by univariate Log-rank method and multivariate Cox proportional hazard models. RESULTS: A total of 435 patients were diagnosed as MDS. The median age of MDS onset was 58(18-90) years, with 248 male patients and 187 female patients (male: female 1.33: 1). The percentage of cases with refractory cytopenia with multilineage dysplasia (RCMD) was the highest (65.5%), while that of refraetory anemia (RA) (2.3%), refractory anenia with ring sideroblast (RARS) (1.1%) and 5q-syndrome (0.5%) was lower. Trisomy 8 (+8) was the most common chromosome abnormalities (71 cases, 12.7%). The mean follow-up time was 20.3 (4.2-57.1) months. Cases were patients with evolution by the end of follow-up, while controls were patients without evolution by that time. Case group included 41 patients and control group included 342 patients. Univariate analysis showed that the age, sex, WHO subtype, WBC count, absolute neutrophil count (ANC), IPSS cytogenetic subgroup, IPSS group and bone marrow blast percentage were significant risk factors for leukemia-free survival (LFS). Multivariate analysis of COX model showed that the age, sex, WHO subtype, IPSS cytogenetic subgroup and bone marrow blast were independent risk factors for LFS. CONCLUSION: A nested case-control study cohort of MDS patients is established. The clinical characteristics and WHO subtype of MDS patients in Chinese Shanghai are different from that in Western countries. The independent risk factors for MDS evolution are age, sex, WHO subtype, IPSS cytogenetic subgroup and bone marrow blast percentage. FAU - Ma, Yan AU - Ma Y AD - Department of Hematology, Huashan Hospital, Fudan Universtiy, Shanghai, 200040, China. FAU - Chen, Bo-Bin AU - Chen BB AD - Department of Hematology, Huashan Hospital, Fudan Universtiy, Shanghai, 200040, China. FAU - Wang, Xiao-Qin AU - Wang XQ AD - Department of Hematology, Huashan Hospital, Fudan Universtiy, Shanghai, 200040, China. FAU - Xu, Xiao-Ping AU - Xu XP AD - Department of Hematology, Huashan Hospital, Fudan Universtiy, Shanghai, 200040, China. E-mail: xpxu1111@163.com. FAU - Lin, Guo-Wei AU - Lin GW AD - Department of Hematology, Huashan Hospital, Fudan Universtiy, Shanghai, 200040, China. LA - chi PT - Journal Article PL - China TA - Zhongguo Shi Yan Xue Ye Xue Za Zhi JT - Zhongguo shi yan xue ye xue za zhi JID - 101084424 RN - Chromosome 5, trisomy 5q RN - Chromosome 8, trisomy SB - IM MH - Adolescent MH - Adult MH - Aged MH - Aged, 80 and over MH - Asian People MH - Bone Marrow MH - Case-Control Studies MH - China MH - Chromosome Aberrations MH - Chromosome Deletion MH - Chromosomes, Human, Pair 5 MH - Chromosomes, Human, Pair 8 MH - Cri-du-Chat Syndrome MH - Female MH - Humans MH - In Situ Hybridization, Fluorescence MH - Karyotyping MH - *Leukemia MH - Male MH - Middle Aged MH - *Myelodysplastic Syndromes MH - Proportional Hazards Models MH - Risk Factors MH - Trisomy MH - Young Adult EDAT- 2015/12/29 06:00 MHDA- 2016/05/05 06:00 CRDT- 2015/12/29 06:00 PHST- 2015/12/29 06:00 [entrez] PHST- 2015/12/29 06:00 [pubmed] PHST- 2016/05/05 06:00 [medline] AID - 1009-2137(2015)06-1638-09 [pii] AID - 10.7534/j.issn.1009-2137.2015.06.021 [doi] PST - ppublish SO - Zhongguo Shi Yan Xue Ye Xue Za Zhi. 2015 Dec;23(6):1638-46. doi: 10.7534/j.issn.1009-2137.2015.06.021.