Department of Pulmonology, Centre of Interstitial Lung Diseases, St Antonius Hospital, Nieuwegein, The Netherlands.
Transplantation. 2012 Jan 27;93(2):127-35. doi: 10.1097/TP.0b013e31823915d5.
Survival rates after lung transplantation are the lowest among solid organ transplantations. Long-term survival is limited by the development of chronic rejection, known as bronchiolitis obliterans syndrome (BOS). Risk factors, such as acute rejection and cytomegalovirus infection, contribute to the development of BOS. However, these risk factors alone do not explain the interindividual variability seen in the development of BOS. There is growing evidence that genetic variations might contribute to an individual's susceptibility to rejection. In this systematic review, based on a literature search through Medline and Embase, an overview is given of the genetic polymorphisms that have been investigated in lung transplant recipients in relation to the devlopment of BOS. Functional genetic polymorphisms in the genes of IFNG (+874 A/T), TGFB1 (+915 G/C), and IL6 (-174 G/C) have been found to be associated with the development of BOS and allograft fibrosis after lung transplantation. However, confirmation was not consistent across all studied cohorts. Genetic polymorphisms in the genes of several Toll-like receptors, mannose-binding lectin, CD14, killer immunoglobulin-like receptors, and matrix metalloproteinase-7 were also found to be associated with the development of BOS, but these studies need to be replicated in independent cohorts. This review shows that there may be involvement of genetic polymorphisms in the development of BOS. Genetic risk profiling of lung transplant recipients could be a promising approach for the future, enabling individualized risk stratification and personalized immunosuppressive treatment after transplantation. Further studies are needed to define risk alleles.
肺移植后的存活率是实体器官移植中最低的。长期存活受到慢性排斥反应(称为闭塞性细支气管炎综合征,BOS)的限制。急性排斥反应和巨细胞病毒感染等风险因素会导致 BOS 的发展。然而,这些风险因素本身并不能解释 BOS 发展中的个体间差异。越来越多的证据表明,遗传变异可能导致个体对排斥的易感性。在这项系统评价中,基于对 Medline 和 Embase 的文献检索,综述了与 BOS 发展相关的肺移植受者基因中的遗传多态性。IFNG(+874 A/T)、TGFB1(+915 G/C)和 IL6(-174 G/C)基因中的功能遗传多态性已被发现与 BOS 和肺移植后同种异体纤维化的发展有关。然而,在所有研究队列中,证实结果并不一致。Toll 样受体、甘露糖结合凝集素、CD14、杀伤免疫球蛋白样受体和基质金属蛋白酶-7 基因中的遗传多态性也与 BOS 的发展有关,但这些研究需要在独立的队列中复制。本综述表明,遗传多态性可能参与了 BOS 的发生。对肺移植受者进行遗传风险分析可能是未来的一种有前途的方法,可以实现移植后的个体化风险分层和个性化免疫抑制治疗。需要进一步研究来确定风险等位基因。