Open AccessAssociation of Human Leukocyte Antigen DRB1*15 and DRB1*15:01 Polymorphisms with Response to Immunosuppressive Therapy in Patients with Aplastic Anemia: A Meta-Analysis
Author(s) -
Shan Liu,
Qing Li,
Ying Zhang,
Qiushuang Li,
Baodong Ye,
Dijiong Wu,
Liming Wu,
Haiyang Lu,
Conghua Ji
Publication year - 2016
Publication title -
plos one
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.99
H-Index - 332
ISSN - 1932-6203
DOI - 10.1371/journal.pone.0162382
Subject(s) - meta analysis , odds ratio , medicine , human leukocyte antigen , confidence interval , cochrane library , hla drb1 , aplastic anemia , immunology , relative risk , oncology , antigen , bone marrow
This study aimed to review and quantitatively analyze (1) the association of aplastic anemia (AA) with human leukocyte antigen (HLA)- DRB1 *15 and HLA-DRB1*15 : 01 polymorphisms and (2) the association of HLA-DRB1*15 and HLA-DRB1*15 : 01 polymorphisms with response to immunosuppressive therapy (IST) in AA. Published studies have reported conflicting and heterogeneous results regarding the association of HLA-DRB1*15 and HLA-DRB1*15 : 01 polymorphisms with response to IST in AA. The PubMed, Embase, Cochrane Library, China National Knowledge Infrastructure, Chinese BioMedical Literature, Wangfang and Chinese Social Sciences Citation Index databases were searched. All relevant publications were searched through December 2015. Odds ratio ( OR ), risk ratio ( RR ), and 95% confidence intervals ( CI ) for the comparison between case–control or cohort studies were evaluated. Finally, 24 articles were identified. For HLA-DRB1*15 and HLA-DRB1*15 : 01 , the OR (95% CI ) was 2.24(1.33–3.77), P < 0.01 and 2.50(1.73–3.62), P < 0.01, respectively; and the overall pooled RR was 1.72 (1.30–2.29), P < 0.01 and 1.59 (1.29–1.96), P < 0.01, respectively. Statistical evidence showed no publication bias ( P > 0.05). Sensitivity analyses revealed that the results were statistically robust. The meta-analysis suggested that HLA-DRB1*15 and HLA-DRB1*15 : 01 polymorphisms might be associated with increased AA risk in Asians. IST might be more effective in HLA-DRB1*15 + and HLA-DRB1*15 : 01 + Asian patients with AA than in HLA-DRB1*15− and HLA-DRB1*15 : 01− Asian patients with AA. Future studies with adequate methodological quality on gene–gene and gene–environment interactions and gene treatment may yield valid results.