用单个核酸多态阵列和全外体序列测序来检测胎儿对异构性丧失的遗传测试
Huili Xue1, Aili Yu2, Lin Zhang3
1Medical Genetic Diagnosis and Therapy Center, Fujian Key Laboratory for Prenatal Diagnosis and Birth Defects, Fujian Maternity and Child Health Hospital, College of Clinical Medicine for Obstetrics & Gynecology and Pediatrics, Fujian Medical University, No. 18 Daoshan Road, Gulou District, Fuzhou City, 350001, Fujian Province, China. xhuili345@163.com.
Scientific reports
|January 25, 2024
概括
胎儿异构性损失 (LOH) 影响了近1%的胎儿. 通过SNP阵列和先进的基因测试工具识别LOH有助于评估怀孕结果和指导管理.
科学领域:
- 遗传学 是一个遗传学.
- 产前诊断 在产前诊断
- 生殖医学 生殖医学
背景情况:
- 失异性 (LOH) 是一种具有潜在临床意义的遗传变异.
- 产前诊断依赖于准确识别胎儿遗传异常.
研究的目的:
- 探索SNP阵列检测到的胎儿LOH的临床意义.
- 分析胎儿LOH,超声波异常和围产期结果之间的相关性.
主要方法:
- 对11 062名经过侵入性诊断程序的胎儿进行了回顾性审查.
- 用于LOH检测的SNP阵列 (Affymetrix CytoScan 750K) 进行检测.
- 父母验证,MS-MLPA和三WES用于遗传确认.
主要成果:
- 0.96%的胎儿显示LOH (106/11,062),其中83%在单个染色体上.
- 66个胎儿有超声波异常,最常见的是胎儿生长限制.
- 具有LOH和超声波异常的胎儿 (36.4%) 与没有 (15.0%) 的胎儿相比,不良妊娠结果更高.
结论:
- 胎儿LOH并不罕见,可以通过分子遗传测试准确地识别.
- 包括SNP阵列,三WES和超声监测在内的综合方法改善了预后评估和怀孕管理.
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