在TMEM17中双变异会导致病谱内的梅克尔-格鲁伯综合征
Luba M Pardo1, Javier Martini1, Emir Zonic1
1CENTOGENE GmbH, Rostock, Germany.
Clinical genetics
|October 7, 2025
概括
在TMEM17中双变异会导致严重的梅克尔-格鲁伯综合征 (MGS) 和其他原发性纤毛病. 这项研究升级了TMEM17基因与疾病的关联,扩大了已知的表型谱,并表明了基因型与表型的相关性.
科学领域:
- 遗传学 遗传学 是一个
- 分子生物学分子生物学
- 发展生物学 发展生物学
背景情况:
- TMEM17对纤毛功能至关重要,之前的报道将同卵性变体与朱伯特综合征和口腔-面部-数字综合征联系起来.
- 在其他原发性纤毛病,特别是严重形式中,TMEM17变异的作用需要进一步调查.
研究的目的:
- 为了确定双的TMEM17变体是否有助于原发性纤毛病.
- 根据ClinGen的建议,评估TMEM17的基因疾病关系 (GDR).
主要方法:
- 查询了一个生物数据库,以识别潜在的TMEM17相关纤维病变的患者.
- 评估了新型同卵性TMEM17变体和相关表型的确诊病例.
- 根据既定的临床指南评估基因与疾病的关系.
主要成果:
- 确定了四个与梅克尔-格鲁伯综合症 (MGS) 和新型同卵性TMEM17变体 (c.4del,c.366dup,c.368C>G) 相关的非相关家族.
- 第五个家庭在三个胎儿中呈现MGS表型,父母是c.4del.的异胞携带者.
- 现象类型包括严重的产前症状,如脑,多囊性功能障碍和多爪,导致早期死亡.
结论:
- 加强了TMEM17基因与疾病的关联,从"有限"到"中度".
- 扩大了TMEM17纤维病变的表型谱,包括产前发病和早期致死性的MGS.
- 功能丧失的TMEM17变体与严重的纤毛病症有关,这表明基因型与表型的相关性.
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