A genome wide association study of frozen shoulder identifies a common variant of WNT7B and diabetes as causal risk factors

A genome wide association study of frozen shoulder identifies a common variant of WNT7B and diabetes as causal risk factors
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肩周炎的全基因组关联研究确定 WNT7B 的常见变异和糖尿病是因果危险因素

DOI:
10.1101/2020.11.13.20224360
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发表时间:
2020
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通讯作者:
Green H
Green H
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作者:
Green H

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冻结肩是一种疼痛的疾病,通常需要手术,影响高达5%的40-60岁的人。关于这种情况的原因知之甚少,但糖尿病是一个很强的风险因素。为了开始了解所涉及的生物学机制,我们的目的是确定与冻结肩相关的遗传变异,并使用孟德尔随机化测试的因果作用diabetes.We进行了全基因组关联研究(GWAS)冻结肩在英国生物银行从ICD-10编码确定的2064例数据。我们使用FinnGen的数据进行复制。我们使用单样本和双样本孟德尔随机化方法来检验糖尿病与冻结肩的因果关系,我们确定了一个包含WNT 7 B的全基因组显著位点(前导SNP rs62228062; OR=1.34 [1.28-1.41],p=2×10−16)。最近的一项转录组研究发现,在接受关节镜下关节囊切开术治疗冻结肩的患者中,WNT 7 B是前囊组织中最丰富的转录物之一,WNT 7 B是该位点的潜在致病基因。前导SNP也与Dupuytren挛缩密切相关(OR=2.61 [2.50,2.72],p<1×10−100)。孟德尔随机化结果提供了证据表明,1型糖尿病是冻结肩的因果风险因素(OR=1.04 [1.02-1.07],p=6×10−5)。没有证据表明肥胖与冻结肩有因果关系,这表明糖尿病通过血糖而不是机械作用影响病情的风险。我们已经确定了第一个与冻结肩相关的遗传变异。WNT 7 B是该位点的潜在致病基因。糖尿病是一个可能的因果风险因素。我们的研究结果提供了参与这种常见疼痛状况的生物学机制的证据。
Frozen shoulder is a painful condition that often requires surgery and affects up to 5% of individuals aged 40-60 years. Little is known about the causes of the condition, but diabetes is a strong risk factor. To begin to understand the biological mechanisms involved, we aimed to identify genetic variants associated with frozen shoulder and to use Mendelian randomization to test the causal role of diabetes.We performed a genome wide association study (GWAS) of frozen shoulder in the UK Biobank using data from 2064 cases identified from ICD-10 codes. We used data from FinnGen for replication. We used one-sample and two-sample Mendelian randomization approaches to test for a causal association of diabetes with frozen shoulder.We identified a single genome-wide significant locus (lead SNP rs62228062; OR=1.34 [1.28-1.41], p=2×10−16) that containedWNT7B. A recent transcriptome study identifiedWNT7Bas amongst the most enriched transcripts in anterior capsule tissue in patients undergoing arthroscopic capsulotomy surgery for frozen shoulder suggestingWNT7Bas a potential causal gene at the locus. The lead SNP was also strongly associated with Dupuytren’s contracture (OR=2.61 [2.50, 2.72], p<1×10−100). The Mendelian randomization results provided evidence that type 1 diabetes is a causal risk factor for frozen shoulder (OR=1.04 [1.02-1.07], p=6×10−5). There was no evidence that obesity was causally associated with frozen shoulder, suggesting that diabetes influences risk of the condition through glycemic rather than mechanical effects.We have identified the first genetic variant associated with frozen shoulder.WNT7Bis a potential causal gene at the locus. Diabetes is a likely causal risk factor. Our results provide evidence of biological mechanisms involved in this common painful condition.
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