当25%感觉像100%时:在连续怀孕中面对复发性囊性纤维化风险
Sujoy Dasgupta1, Dipanjana Datta2, Soumyajit Pal3
1Reproductive Medicine, Genome - The Fertility Centre, Kolkata, IND.
Cureus
|December 23, 2025
概括
这一案例凸显了将基因测序与副本数变异分析相结合的必要性,以准确诊断囊性纤维化. 它强调了复发性遗传疾病的心理影响和综合遗传咨询的重要性.
科学领域:
- 医学遗传学 医学遗传学
- 人类遗传学 人类遗传学
背景情况:
- 囊性纤维化 (CF) 是一种由CFTR基因突变引起的致命的自体衰退性疾病,在印度具有显著的遗传异质性.
- 该案涉及一对夫妇由于CF而经历了反复的怀孕流产,这给诊断带来了挑战.
研究的目的:
- 在一对夫妇中报告复杂的囊性纤维化诊断病例,这些夫妇有重复的流产.
- 强调CFTR突变的综合基因测试方法的重要性.
- 突出患有罕见遗传疾病的家庭的心理影响和咨询需求.
主要方法:
- 最初的向性外体序列测定,然后进行多重结合依赖的探针放大 (MLPA) 来分析副本数量变异 (CNV).
- 通过胆取样 (CVS) 进行单基因条件 (PGT-M) 的植入前遗传测试和产前诊断.
主要成果:
- 在死去的婴儿身上发现了一种复合的异构基因CFTR突变 (F508del和多个表因子的删除),仅通过初始测序就错过了.
- 这对夫妇接受了PGT-M,经历了妊娠终止,并在三个受影响/携带者怀孕后最终生下了一个健康的携带者孩子.
- 男性伴侣,CFTR突变载体,没有表现出先天双边缺陷的Vas deferens (CBAVD).
结论:
- 组合序列变异检测和CNV分析对于准确的CFTR突变致死性确定至关重要.
- 复发性自体衰退性疾病的心理负担需要强有力的遗传咨询和心理支持.
- 这个案例展示了罕见遗传疾病家庭所面临的诊断复杂性和情感挑战,强调了需要坚持和明智决策的必要性.
关键词:
胆膜取样本采集 胆膜取样本采集印度的囊性纤维化囊性纤维化转膜导电调节器 (cftr) 蛋白质f508del 突变 突变 突变多重联结依赖的探头放大.下一代测序 (ngs) 是指下一代的测序.植入前遗传检测是植入前的基因检测.在连续怀孕中出现复发.有针对性的外基因组测序.更多相关视频
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