A homozygous missense variant in YTHDC2 induces azoospermia in two siblings.
Mol Genet Genomics
; 299(1): 84, 2024 Sep 02.
Article
in En
| MEDLINE
| ID: mdl-39223386
ABSTRACT
Male infertility is a complex multifactorial reproductive disorder with highly heterogeneous phenotypic presentations. Azoospermia is a medically non-manageable cause of male infertility affecting â¼1% of men. Precise etiology of azoospermia is not known in approximately three-fourth of the cases. To explore the genetic basis of azoospermia, we performed whole exome sequencing in two non-obstructive azoospermia affected siblings from a consanguineous Pakistani family. Bioinformatic filtering and segregation analysis of whole exome sequencing data resulted in the identification of a rare homozygous missense variant (c.962G>C, p. Arg321Thr) in YTHDC2, segregating with disease in the family. Structural analysis of the missense variant identified in our study and two previously reported functionally characterized missense changes (p. Glu332Gln and p. His327Arg) in mice showed that all these three variants may affect Mg2+ binding ability and helicase activity of YTHDC2. Collectively, our genetic analyses and experimental observations revealed that missense variant of YTHDC2 can induce azoospermia in humans. These findings indicate the important role of YTHDC2 deficiency for azoospermia and will provide important guidance for genetic counseling of male infertility.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Pedigree
/
Mutation, Missense
/
Siblings
/
Azoospermia
/
Exome Sequencing
/
Homozygote
Limits:
Adult
/
Animals
/
Humans
/
Male
Country/Region as subject:
Asia
Language:
En
Journal:
Mol Genet Genomics
Year:
2024
Document type:
Article