长效β2-激动剂(LABA)被推荐用于哮喘治疗;然而,并非所有哮喘患者对LABA反应良好。我们对哮喘患者与LABA反应相关的遗传变异进行了系统评价。
两位作者使用PubMed和EMBASE搜索了截至2017年4月发表的文章。包括哮喘患者的药物遗传学研究和作为结果的LABA反应。
总共,这项系统评价包括33项研究;8项关注儿童(n=6051)。19项研究是临床试验,14项是观察性研究。研究使用不同的结果来定义LABA反应,例如,肺功能测量(FEV1,PEF,MMEF,FVC),恶化,生活质量,哮喘症状。大多数研究(n=30)集中在ADRB2基因,编码β2-肾上腺素能受体。30项研究(n=14.874)针对ADRB2rs1042713,7ADRB2rs1042714(n=1629),和3ADRB2rs1800888(n=1892)。成功复制了ADRB2rs1042713和rs1800888与LABA反应异质性的关联。其他变体仅在三项研究中进行了研究,但没有重复。一项研究集中在ADCY9基因上。五项研究和一项荟萃分析发现,使用携带一个或两个A等位基因的LABA,儿科恶化的风险增加(OR1.52[1.17;1.99])。这些结果在成年人中没有得到证实。
ADRB2rs1042713变异体与儿童而非成人对LABA的反应最为一致。评估ADRB2rs1042713在哮喘患儿使用LABA的临床价值。需要一项结局明确的随机临床试验.
Long-acting beta2-agonists (LABA) are recommended in asthma therapy; however, not all asthma patients respond well to LABA. We performed a systematic
review on genetic variants associated with LABA response in patients with asthma.
Articles published until April 2017 were searched by two authors using PubMed and EMBASE. Pharmacogenetic studies in patients with asthma and LABA response as an outcome were included.
In total, 33 studies were included in this systematic
review; eight focused on children (n = 6051). Nineteen studies were clinical trials, while 14 were observational studies. Studies used different outcomes to define LABA response, for example, lung function measurements (FEV1 , PEF, MMEF, FVC), exacerbations, quality of life, and asthma symptoms. Most studies (n = 30) focused on the ADRB2 gene, encoding the beta2-adrenergic receptor. Thirty studies (n = 14 874) addressed ADRB2 rs1042713, 7 ADRB2 rs1042714 (n = 1629), and 3 ADRB2 rs1800888 (n = 1892). The association of ADRB2 rs1042713 and rs1800888 with LABA response heterogeneity was successfully replicated. Other variants were only studied in three studies but not replicated. One study focused on the ADCY9 gene. Five studies and a meta-analysis found an increased risk of exacerbations in pediatrics using LABA carrying one or two A alleles (OR 1.52 [1.17; 1.99]). These results were not confirmed in adults.
ADRB2 rs1042713 variant is most consistently associated with response to LABA in children but not adults. To assess the clinical value of ADRB2 rs1042713 in children with asthma using LABA, a randomized clinical trial with well-defined outcomes is needed.