[Annexin A5 gene polymorphism (-1C/T) and the susceptibility to pneumoconiosis in coal works].

Objective To explore the role of-lC/T single nucleotide polymorphism within Annexin A5 gene in the genetic susceptibility to coal worker's pneumoconiosis (CWP).Methods Four hundred and seventy CWP Han chinese patients and 428 Han chinese controls were enclosed in present case-control study.All subjects were exposed to coal dusts.The polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) was used to detect the -1C/T SNP in Annexin A5 gene for all subjects.The relationship between the -1C/T SNP in Annexin A5 gene and CWP was analyzed.Results CT/TT genotype in -1C/T SNP was associated with a significantly decreased risk of CWP,as compared with the CC genotype among subgroups exposed to coal dusts for ≥27 years (adjusted OR=0.65,95％CI:0.44-0.98,P=0.039) and patients with CWP at stage Ⅱ (adjusted OR=0.55,95％CI:0.34-0.90,P=0.028 ).Conclusion The results of present study suggest that the Annexin A5 -1C/T polymorphism may be involved in the development of CWP in Han Chinese coal miners. Key words: Pneumoconiosis;  Annexin A5;  Polymorphism, single nucleotide