在患有慢性腹,小肠阻塞和发育迟缓的患者中发现了De Novo GUCY2C和PRR12突变
Feruza Abraamyan1, Luke Pecha2, Valentina Medici2
1Department of Internal Medicine, Sutter Roseville Medical Center, Roseville, CA.
ACG case reports journal
|December 8, 2025
概括
一种新的GUCY2C突变导致先天性腹和肠道阻塞. 一种PRR12突变解释了发育迟缓,解决了长期存在的诊断团,并使个性化患者护理成为可能.
科学领域:
- 遗传学 遗传学 是一个
- 胃肠病学 胃肠病学
- 发展生物学 发展生物学
背景情况:
- 先天性分泌性腹和反复出现的小肠阻塞会给诊断带来重大挑战.
- 神经发育迟缓可能与复杂的遗传疾病有关.
研究的目的:
- 确定30岁男性先天性分泌性腹,重复性小肠阻塞和神经发育迟缓的遗传原因.
- 阐明病人的复杂表型背后的分子机制.
主要方法:
- 进行了整个外体序列测序,以确定致病性遗传变异.
- 考虑了功能性研究,以了解已识别的突变的影响.
主要成果:
- 确定了一种新的功能增益的GUCY2C突变 (c.2309T>C,p.Leu770Pro),与持续的化物和水分泌有关,模仿肠毒性大肠杆菌.
- 发现同时发生的de novoPRR12框架转移突变 (c.768del,p.Ala257Leufs*58) 解释了神经发育延迟.
- GUCY2C突变还与小肠道阻塞和类似克罗恩病的表型有关.
结论:
- 该研究成功地确定了GUCY2C和PRR12中的双重de novo突变是导致患者复杂临床表现的原因.
- 这些发现解决了长达数十年的诊断旅程,并为有针对性的个性化治疗策略铺平了道路.
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