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Mendeliome v1.3011 TCFL5 Chirag Patel gene: TCFL5 was added
gene: TCFL5 was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: TCFL5 was set to MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Publications for gene: TCFL5 were set to PMID: 40711600
Phenotypes for gene: TCFL5 were set to Oligoasthenoteratozoospermia MONDO:0850098
Review for gene: TCFL5 was set to RED
Added comment: 2 brothers from non-consanguineous family with oligoasthenoteratozoospermia (OAT). WES identified missense variant in TCFL5 gene (c.1207G>A, p.E403K). Western blotting and immunofluorescence showed no significant effect on the expression of 'mutant' TCFL5. Dual-luciferase reporter assay revealed a serious impact on its transcriptional regulatory function.
The variant disrupted the normal transcription of crucial genes involved in spermatogenesis (DMRT1, DAZL, SYCE1, SPACA1, CNTROB, IFT88, HOOK1 and SPATA6). Tcfl5+/- male mice manifest infertile due to OAT, while Tcfl5-/- mice can not be generated.
Sources: Literature
Mendeliome v1.2737 BCORL1 Zornitza Stark edited their review of gene: BCORL1: Added comment: Association with spermatogenic failure:

i) PMID: 38342987- novel hemizygous nonsense variant (c.1564G > T:p.Glu522*) in a male patient with oligoasthenoteratozoospermia (OAT) from a Han Chinese family. Functional analysis showed that the variant produced a truncated protein with altered cellular localization and a dysfunctional interaction with SKP1 (S-phase kinase-associated protein 1). Also identified four hemizygous missense variants (c.2615T > G:p.Val872Gly, c.2669G > A:p.Arg890Gln, c.3164A > G:p.Asp1055Gly and c.3344C > T:p.Pro1115Leu) in subjects with both OAT (1 of 325, 0.31%) and NOA (4 of 355, 1.13%). They hypothesized that the BCORL1 (c.2615 T > G, c.2669G > A, c.3164A > G, c.3344C > T) missense mutations may have led to an accumulation of dysfunctional toxic proteins that resulted in a more severe male infertility phenotype in the patient (NOA).

ii) PMID: 32376790- Hemizygous missense variant in a male patient with NOA without other diseases, which also found that the knockout of Bcorl1 in mice resulted in OAT with the abnormal brain development. It had not been previously linked to male infertility. This study demonstrates, for the first time, that loss of Bcorl1 causes spermatogenesis failure.

iii) PMID: 39267058- hemizygous missense variant (p.Arg19Gln) in a infertile male with oliogasthenozoospermia, no functional data

iv) PMID: 39189935- novel hemizygous missense variant (p.G1391R) and a recurrent variant (p.V872G) in BCORL1 from four OAT patients. Functional assays showed that the variants disturb the transcription of spermatogenetic genes such as SYCE1 and DAZL, impair the interaction with HDAC7, and cause epigenetic changes such as changes in level of histone modification with different extent, including the enhancement in acetylation of H3K14, and the reduction in acetylation of H4K5 and H4K8.; Changed rating: GREEN; Changed publications: 24123876, 30941876, 38342987, 32376790, 39267058, 39189935; Changed phenotypes: Shukla-Vernon syndrome, MIM#301029, Spermatogenic failure, MONDO:0004983, BCORL1-related
Mendeliome v0.5625 SYCE1 Zornitza Stark Marked gene: SYCE1 as ready
Mendeliome v0.5625 SYCE1 Zornitza Stark Gene: syce1 has been classified as Green List (High Evidence).
Mendeliome v0.5625 SYCE1 Zornitza Stark Classified gene: SYCE1 as Green List (high evidence)
Mendeliome v0.5625 SYCE1 Zornitza Stark Gene: syce1 has been classified as Green List (High Evidence).
Mendeliome v0.5624 SYCE1 Zornitza Stark gene: SYCE1 was added
gene: SYCE1 was added to Mendeliome. Sources: Expert list
Mode of inheritance for gene: SYCE1 was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: SYCE1 were set to 25062452; 32917591; 32741963; 32402064; 31925770; 31916078
Phenotypes for gene: SYCE1 were set to Premature ovarian failure 12, MIM# 616947; Spermatogenic failure 15 ,MIM#616950
Review for gene: SYCE1 was set to GREEN
Added comment: More than 5 families reported with POF/SF and bi-allelic variants in this gene. Mechanism is thought to be disruption of meiosis, mouse model data also supports gene-disease association.
Sources: Expert list