Sperm from a patient with a homozygous in-frame deletion in CATSPERE lack functional CatSper expression and fail to fertilise at IVF

S. G. Brown*, P.V. Lishko, S.J. Publicover, C.L.R. Barratt, S.M. Martins da Silva

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Background: CatSper is a multi-subunit sperm-specific calcium channel that mediates the progesterone-induced increase in intracellular calcium. Evidence from CatSper subunit knock-out mouse models implicates it as essential for sperm fertilisation competence. Similarly, impaired or absent P4 response in patient sperm is associated with poor or loss of fertilisation at IVF. However, genetic evidence in a limited number of cases reported genomic deletions spanning a number of loci. We reported a unique case (Williams et al., 2014) of a man (patient 1) with sperm that lacked functional CatSper expression but he had no genetic errors in CatSper subunit coding regions. Subsequently, two new proteins have been proposed to be part of the mature complex (CatSper-epsilon and CatSper-zeta).
Original languageEnglish
Title of host publicationXIIIth International Symposium on Spermatology
EditorsLars Björndahl, John Flanagan, Rebecka Holmberg, Ulrik Kvist
Place of PublicationCham
Number of pages2
ISBN (Electronic)9783030662929
ISBN (Print)9783030662912
Publication statusPublished - 23 Jul 2021

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