在PKD1中非典型的拼接变体解释了大多数未被诊断的典型家族ADPKD
Yvonne Hort1, Patricia Sullivan2,3, Laura Wedd1,4
1Molecular Genetics of Inherited Kidney Disorders Laboratory, Garvan Institute of Medical Research, Sydney, Australia.
NPJ genomic medicine
|July 7, 2023
概括
大多数未被诊断的自体主导多囊性病 (ADPKD) 病例源于PKD1基因中的拼接变异. 先进的测序和RNA研究成功诊断了89%以前未被诊断的家庭.
科学领域:
- 遗传学 遗传学 是一个
- 分子生物学分子生物学
- 医学诊断 医学诊断 医学诊断
背景情况:
- 自体主导多囊性病 (ADPKD) 是导致衰竭的主要单一原因,通常与PKD1或PKD2基因突变有关.
- 在传统基因检测后,很大一部分ADPKD患者仍未被诊断出来,这凸显了改善诊断方法的必要性.
研究的目的:
- 用先进的基因组和转录组技术调查未被诊断的ADPKD家族.
- 确定先前在遗传上未被诊断的典型表型患者中ADPKD的遗传基础.
主要方法:
- 招募具有典型表型和负面标准遗传检测结果的ADPKD患者.
- 利用短读基因组测序进行全面的PKD1/PKD2分析,包括非编码区域.
- 采用向RNA研究来调查拼接变体和复杂病例的长读序列.
主要成果:
- 在以前未被诊断的ADPKD病例中,实现了89%的诊断率 (9个家庭中的8个).
- 确定了PKD1中影响拼接的变体,作为未被诊断的ADPKD的主要原因,包括新的非编码变体.
- 短读测序检测到各种拼接部位变化,而长读测序证实了在具有挑战性的情况下的诊断.
结论:
- 在PKD1基因中,结合影响变异常常导致未被诊断的ADPKD.
- 短读测序,非编码区域分析和向RNA研究的综合方法提供了一个务实的诊断策略.
- 长读测序对于解决ADPKD诊断中复杂的遗传变异是有价值的.
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