T-cell immunoglobulin- and mucin-domain-containing molecule 3 gene polymorphisms and prognosis of non-small-cell lung cancer |
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Authors: | Jianwen Bai Xiaoyan Li Danian Tong Weiwei Shi Haihan Song Qinchuan Li |
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Affiliation: | 1. Internal Medicine Division of the Emergency Center, Shanghai East Hospital, Tongji University, 150 Jimo Road, Shanghai, 200120, China 2. Department of Lung Cancer, Affiliated Hospital of Academy of Military Medical Sciences of PLA, Beijing, 100071, China 3. Department of Surgery, The Sixth People’s Hospital, Shanghai Jiao Tong University, Shanghai, 200233, China 4. Department of Oncology, PLA General Hospital, Beijing, 100853, China 5. Department of Cardiovascular and Thoracic Surgery, Shanghai East Hospital, Tongji University, 150 Jimo Road, Shanghai, 200120, China
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Abstract: | Lung cancer is the leading cause of death worldwide. Non-small-cell lung cancer (NSCLC) accounts for most of these cases. T-cell immunoglobulin- and mucin-domain-containing molecule 3 (TIM-3) has been established as a negative regulatory molecule and plays a critical role in immune tolerance. Studies have shown that polymorphisms in TIM-3 gene can be associated with various diseases. The aim of this study was to investigate whether polymorphisms in the TIM-3 gene were associated with susceptibility to NSCLC. Three polymorphisms in TIM-3 gene (?1516G/T, ?574G/T, and +4259T/G) were identified by polymerase chain reaction–restriction fragment length polymorphism in 432 NSCLC patients and 466 healthy controls. Results showed that frequencies of TIM-3 +4259TG genotype for cases and controls were 10.9 and 4.1 %, respectively; subjects carrying the +4259TG genotype had a 2.81-fold increased risk of NSCLC compared to the wild-type genotype (P?0.0001). The TIM-3 ?1516G/T and ?574G/T polymorphisms did not show any correlation with NSCLC. In addition, when analyzing the survival time of NSCLC patients with TIM-3 +4259T/G polymorphism, cases with +4259TG genotype had significantly shorter survival time compared to the wild-type patients (15.2 months vs. 26.7 months, P?=?0.007). These results suggested polymorphism in TIM-3 gene is associated with increased susceptibility to NSCLC and could be used as prognostic factor for this malignancy. |
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