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Exome sequencing of a primary ovarian insufficiency cohort reveals common molecular etiologies for a spectrum of disease

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Date

2019

Author

Jolly, Angad
Bayram, Yavuz
Turan, Serap
Aycan, Zehra
Tos, Tulay
Abali, Zehra Yavas
Lupski, James R.

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Citation

Jolly, A., Bayram, Y., Turan, S., Aycan, Z., Tos, T., Abali, Z. Y., … Lupski, J. R. (2019). Exome Sequencing of a Primary Ovarian Insufficiency Cohort Reveals Common Molecular Etiologies for a Spectrum of Disease. JOURNAL OF CLINICAL ENDOCRINOLOGY & METABOLISM, 104(8), 3049–3067. https://doi.org/10.1210/jc.2019-00248

Abstract

Context: Primary ovarian insufficiency (POI) encompasses a spectrum of premature menopause, including both primary and secondary amenorrhea. For 75% to 90% of individuals with hyper-gonadotropic hypogonadism presenting as POI, the molecular etiology is unknown. Common etiologies include chromosomal abnormalities, environmental factors, and congenital disorders affecting ovarian development and function, as well as syndromic and nonsyndromic single gene disorders suggesting POI represents a complex trait. Objective: To characterize the contribution of known disease genes to POI and identify molecular etiologies and biological underpinnings of POI. Design, Setting, and Participants: We applied exome sequencing (ES) and family-based genomics to 42 affected female individuals from 36 unrelated Turkish families, including 31 with reported parental consanguinity. Results: This analysis identified likely damaging, potentially contributing variants and molecular diagnoses in 16 families (44%), including 11 families with likely damaging variants in known genes and five families with predicted deleterious variants in disease genes (IGSF10, MND1, MRPS22, and SOHLH1) not previously associated with POI. Of the 16 families, 2 (13%) had evidence for potentially pathogenic variants at more than one locus. Absence of heterozygosity consistent with identity-by-descent mediated recessive disease burden contributes to molecular diagnosis in 15 of 16 (94%) families. GeneMatcher allowed identification of additional families from diverse genetic backgrounds. Conclusions: ES analysis of a POI cohort further characterized locus heterogeneity, reaffirmed the association of genes integral to meiotic recombination, demonstrated the likely contribution of genes involved in hypothalamic development, and documented multilocus pathogenic variation suggesting the potential for oligogenic inheritance contributing to the development of POI.

Source

Journal of Clinical Endocrinology & Metabolism

Volume

104

Issue

8

URI

https://doi.org/10.1210/jc.2019-00248
https://hdl.handle.net/20.500.12713/585

Collections

  • Makale Koleksiyonu [294]
  • PubMed İndeksli Yayınlar Koleksiyonu [877]
  • Scopus İndeksli Yayınlar Koleksiyonu [1259]
  • WoS İndeksli Yayınlar Koleksiyonu [1313]



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