Exome sequencing analysis on products of conception: a cohort study to evaluate clinical utility and genetic etiology for pregnancy loss

Chen Zhao, Hongyan Chai, Qinghua Zhou, Jiadi Wen, Uma M. Reddy, Rama Kastury, Yonghui Jiang, Winifred Mak, Allen E. Bale, Hui Zhang, Peining Li

Producción científica: Articlerevisión exhaustiva

28 Citas (Scopus)

Resumen

Purpose: Pregnancy loss ranging from spontaneous abortion (SAB) to stillbirth can result from monogenic causes of Mendelian inheritance. This study evaluated the clinical application of exome sequencing (ES) in identifying the genetic etiology for pregnancy loss. Methods: A cohort of 102 specimens from products of conception (POC) with normal karyotype and absence of pathogenic copy-number variants were selected for ES. Abnormality detection rate (ADR) and variants of diagnostic value correlated with SAB and stillbirth were evaluated. Results: ES detected 6 pathogenic variants, 16 likely pathogenic variants, and 17 variants of uncertain significance favor pathogenic (VUSfp) from this cohort. The ADR for pathogenic and likely pathogenic variants was 22% and reached 35% with the inclusion of VUSfp. The ADRs of SAB and stillbirth were 36% and 33%, respectively. Affected genes included those associated with multisystem abnormalities, neurodevelopmental disorders, cardiac anomalies, skeletal dysplasia, metabolic disorders, and renal diseases. Conclusion: These results supported the clinical utility of ES for detecting monogenic etiology of pregnancy loss. The identification of disease-associated variants provided information for follow-up genetic counseling of recurrence risk and management of subsequent pregnancies. Discovery of novel variants could provide insight for underlying molecular mechanisms causing fetal death.

Idioma originalEnglish (US)
Páginas (desde-hasta)435-442
Número de páginas8
PublicaciónGenetics in Medicine
Volumen23
N.º3
DOI
EstadoPublished - mar 2021
Publicado de forma externa

ASJC Scopus subject areas

  • Genetics(clinical)

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