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Genetic Evaluation in a Cohort of 126 Dutch Pulmonary Arterial Hypertension Patients
Genes ( IF 2.8 ) Pub Date : 2020-10-13 , DOI: 10.3390/genes11101191
Lieke M van den Heuvel 1, 2, 3 , Samara M A Jansen 4 , Suzanne I M Alsters 1 , Marco C Post 5, 6 , Jasper J van der Smagt 3 , Frances S Handoko-De Man 4 , J Peter van Tintelen 1, 3 , Hans Gille 1 , Imke Christiaans 7 , Anton Vonk Noordegraaf 4 , HarmJan Bogaard 4 , Arjan C Houweling 1
Affiliation  

Pulmonary arterial hypertension (PAH) is a severe, life-threatening disease, and in some cases is caused by genetic defects. This study sought to assess the diagnostic yield of genetic testing in a Dutch cohort of 126 PAH patients. Historically, genetic testing in the Netherlands consisted of the analysis of BMPR2 and SMAD9. These genes were analyzed in 70 of the 126 patients. A (likely) pathogenic (LP/P) variant was detected in 22 (31%) of them. After the identification of additional PAH associated genes, a next generation sequencing (NGS) panel consisting of 19 genes was developed in 2018. Additional genetic testing was offered to the 48 BMPR2 and SMAD9 negative patients, out of which 28 opted for NGS analysis. In addition, this gene panel was analyzed in 56 newly identified idiopathic (IPAH) or pulmonary veno occlusive disease (PVOD) patients. In these 84 patients, NGS panel testing revealed LP/P variants in BMPR2 (N = 4), GDF2 (N = 2), EIF2AK4 (N = 1), and TBX4 (N = 3). Furthermore, 134 relatives of 32 probands with a LP/P variant were tested, yielding 41 carriers. NGS panel screening offered to IPAH/PVOD patients led to the identification of LP/P variants in GDF2, EIF2AK4, and TBX4 in six additional patients. The identification of LP/P variants in patients allows for screening of at-risk relatives, enabling the early identification of PAH.

中文翻译:

一组 126 名荷兰肺动脉高压患者的遗传评估

肺动脉高压 (PAH) 是一种严重的危及生命的疾病,在某些情况下是由遗传缺陷引起的。本研究旨在评估荷兰 126 名 PAH 患者队列中基因检测的诊断率。从历史上看,荷兰的基因检测包括对 BMPR2 和 SMAD9 的分析。在 126 名患者中的 70 名中分析了这些基因。在其中 22 个(31%)中检测到(可能)致病性 (LP/P) 变异。在确定了额外的 PAH 相关基因后,2018 年开发了一个由 19 个基因组成的下一代测序 (NGS) 面板。 向 48 名 BMPR2 和 SMAD9 阴性患者提供了额外的基因检测,其中 28 名选择了 NGS 分析。此外,该基因组在 56 名新发现的特发性 (IPAH) 或肺静脉闭塞病 (PVOD) 患者中进行了分析。在这 84 名患者中,NGS 面板测试揭示了 BMPR2 (N = 4)、GDF2 (N = 2)、EIF2AK4 (N = 1) 和 TBX4 (N = 3) 中的 LP/P 变异。此外,测试了 32 名具有 LP/P 变异的先证者的 134 名亲属,产生了 41 名携带者。为 IPAH/PVOD 患者提供的 NGS 面板筛选导致在另外 6 名患者中鉴定出 GDF2、EIF2AK4 和 TBX4 中的 LP/P 变异。确定患者中的 LP/P 变体可以筛查有风险的亲属,从而能够及早识别 PAH。和 TBX4 在另外六名患者中。确定患者中的 LP/P 变体可以筛查有风险的亲属,从而能够及早识别 PAH。和 TBX4 在另外六名患者中。确定患者中的 LP/P 变体可以筛查有风险的亲属,从而能够及早识别 PAH。
更新日期:2020-10-13
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