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Infertility and Recurrent Pregnancy Loss v0.33 CFTR Zornitza Stark Marked gene: CFTR as ready
Infertility and Recurrent Pregnancy Loss v0.33 CFTR Zornitza Stark Gene: cftr has been classified as Green List (High Evidence).
Infertility and Recurrent Pregnancy Loss v0.33 CFTR Zornitza Stark Classified gene: CFTR as Green List (high evidence)
Infertility and Recurrent Pregnancy Loss v0.33 CFTR Zornitza Stark Gene: cftr has been classified as Green List (High Evidence).
Infertility and Recurrent Pregnancy Loss v0.29 CFTR Jasmine Chew gene: CFTR was added
gene: CFTR was added to Infertility and Pregnancy Loss. Sources: Literature
Mode of inheritance for gene: CFTR was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: CFTR were set to 30214069; 40169970; 39592508; 39356031
Phenotypes for gene: CFTR were set to Congenital bilateral absence of vas deferens, MIM# 277180
Review for gene: CFTR was set to GREEN
Added comment: OMIM- Found in more than 25% of men with obstructive azoospermia, involving a complete or partial defect of the Wolffian duct derivatives; PMID: 30214069

New case reports- PMID: 40169970; 39592508; 39356031
Sources: Literature
Infertility and Recurrent Pregnancy Loss v0.12 SLC26A8 Jasmine Chew changed review comment from: i) PMID: 23582645- 3 heterozygous missense variants in 3 unrelated infertile men, and studies in transfected CHO-K1 cells revealed reduced interactions with CFTR and complete failure of the all three mutant to activate CFTR-dependent anion transport. Immunoblot analysis also showed that the mutant protein was significantly less abundant than wildtype and the decreased abundance of the mutant protein results from instability and proteasomal degradation.

ii) PMID: 34923715- Compound heterozygous variants in two unrelated infertile Chinese men with severe asthenozoospermia. The sperm motility of these homozygous probands was severely reduced, compared to the moderately reduced motility of sperm from the previously reported heterozygous probands (confirmed by immunoblot), consistent with SLC26A8 being the cause of their infertility phenotype,

iii) PMID: 35181959- 3 heterozygous variants ( 2-bp deletion, V731I, 1-bp deletion) in 3 unrelated infertile men with asthenoteratozoospermia, and although transfection study showed a significantly reduction of SLC26A8 expression to nearly absence in transfected HEK293 cells, immunostaining of patient sperm showed no difference in SLC26A8 expression compared to control sperm and western blot analysis of spermatozoa lysates confirmed the similar expression of SLC26A8 between patient and control sperm. Also mentioned that previous studies (PMID: 22121115 and PMID: 17517695) had shown that Slc26a8 +/- mice were fertile, whereas Slc26a8-null mice were infertile, the authors suggested that heterozygous SLC26A8 variants might not be the direct cause of the asthenoteratozoospermic phenotype observed in infertile men, and that SLC26A8-associated male infertility is likely an autosomal recessive disorder.
Sources: Literature; to: i) PMID: 23582645- 3 heterozygous missense variants in 3 unrelated infertile men, and studies in transfected CHO-K1 cells revealed reduced interactions with CFTR and complete failure of the all three mutant to activate CFTR-dependent anion transport.

ii) PMID: 34923715- Compound heterozygous variants in two unrelated infertile Chinese men with severe asthenozoospermia. The sperm motility of these homozygous probands was severely reduced, compared to the moderately reduced motility of sperm from the previously reported heterozygous probands (confirmed by immunoblot), consistent with SLC26A8 being the cause of their infertility phenotype,

iii) PMID: 35181959- 3 heterozygous variants ( 2-bp deletion, V731I, 1-bp deletion) in 3 unrelated infertile men with asthenoteratozoospermia. Although transfection study showed a significantly reduction of SLC26A8 expression to nearly absence in transfected HEK293 cells, immunostaining of patient sperm showed no difference in SLC26A8 expression compared to control sperm and western blot analysis of spermatozoa lysates confirmed the similar expression of SLC26A8 between patient and control sperm. Also mentioned that previous studies (PMID: 22121115 and PMID: 17517695) had shown that Slc26a8 +/- mice were fertile, whereas Slc26a8-null mice were infertile, the authors suggested that heterozygous SLC26A8 variants might not be the direct cause of the asthenoteratozoospermic phenotype observed in infertile men, and that SLC26A8-associated male infertility is likely an autosomal recessive disorder.
Infertility and Recurrent Pregnancy Loss v0.12 SLC26A8 Jasmine Chew gene: SLC26A8 was added
gene: SLC26A8 was added to Infertility and Pregnancy Loss. Sources: Literature
Mode of inheritance for gene: SLC26A8 was set to BOTH monoallelic and biallelic, autosomal or pseudoautosomal
Publications for gene: SLC26A8 were set to 23582645; 34923715; 35181959
Phenotypes for gene: SLC26A8 were set to Spermatogenic failure 3, MIM# 606766
Review for gene: SLC26A8 was set to GREEN
Added comment: i) PMID: 23582645- 3 heterozygous missense variants in 3 unrelated infertile men, and studies in transfected CHO-K1 cells revealed reduced interactions with CFTR and complete failure of the all three mutant to activate CFTR-dependent anion transport. Immunoblot analysis also showed that the mutant protein was significantly less abundant than wildtype and the decreased abundance of the mutant protein results from instability and proteasomal degradation.

ii) PMID: 34923715- Compound heterozygous variants in two unrelated infertile Chinese men with severe asthenozoospermia. The sperm motility of these homozygous probands was severely reduced, compared to the moderately reduced motility of sperm from the previously reported heterozygous probands (confirmed by immunoblot), consistent with SLC26A8 being the cause of their infertility phenotype,

iii) PMID: 35181959- 3 heterozygous variants ( 2-bp deletion, V731I, 1-bp deletion) in 3 unrelated infertile men with asthenoteratozoospermia, and although transfection study showed a significantly reduction of SLC26A8 expression to nearly absence in transfected HEK293 cells, immunostaining of patient sperm showed no difference in SLC26A8 expression compared to control sperm and western blot analysis of spermatozoa lysates confirmed the similar expression of SLC26A8 between patient and control sperm. Also mentioned that previous studies (PMID: 22121115 and PMID: 17517695) had shown that Slc26a8 +/- mice were fertile, whereas Slc26a8-null mice were infertile, the authors suggested that heterozygous SLC26A8 variants might not be the direct cause of the asthenoteratozoospermic phenotype observed in infertile men, and that SLC26A8-associated male infertility is likely an autosomal recessive disorder.
Sources: Literature