在诊断单一胆固醇性肝脏疾病的下一代测序:一个单一中心的经验
Engin Demir1, Fatma Derya Bulut2, Berrak Bilginer-Gürbüz3
1Division of Pediatric Gastroenterology, Department of Pediatrics, Mersin City Training and Research Hospital, Mersin, Turkey.
Molecular syndromology
|August 7, 2025
概括
当传统方法失败时,下一代测序 (NGS) 准确诊断了儿科胆固醇症. 这种基因测试发现了新的基因变异,改善了儿童罕见肝病的诊断.
科学领域:
- 儿科胃肠病学 儿科胃肠病学
- 临床遗传学 临床遗传学
- 分子诊断学 分子诊断
背景情况:
- 儿童胆固醇症是一种罕见但严重的疾病,需要及时诊断才能有效治疗.
- 胆管缩,单一性和代谢性疾病是常见的原因,但诊断可能具有挑战性.
- 传统的诊断方法可能并不总是能够阐明胆固醇病的病因.
研究的目的:
- 评估下一代测序 (NGS) 面板在诊断儿科胆固醇病的临床实用性.
- 评估临床外因子测序和全外因子测序的有效性,当传统方法不足时.
- 识别与胆固醇性肝病相关的新型遗传变异.
主要方法:
- 从2020年8月到2022年3月,对36名儿科胆固醇病患者进行了回顾性分析.
- 排除通过传统调查诊断的患者,其中14人接受了NGS (全外体或向).
- 完全排除感染性,有毒性,代谢性,结构性,染色体性和内分泌性原因.
主要成果:
- 在14名患者中,NGS在12名患者中实现了最终诊断 (85.7%的诊断准确率).
- 常见的确诊疾病包括渐进性家族性肝内胆固醇衰竭 (PFIC) 和杜宾-约翰逊综合征.
- 在ABCB11和ABCC2基因中发现了三种新型变异.
结论:
- 在传统方法无法得出结论时,NGS是诊断儿科胆固醇病的宝贵工具.
- 基因测序有助于识别特定的单基因原因,指导治疗和预后.
- 新变种的发现扩大了对遗传胆固醇性疾病的理解.
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