ClinVar Miner

Submissions for variant NM_001128.6(AP1G1):c.136C>T (p.Arg46Ter)

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Total submissions: 1
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Victorian Clinical Genetics Services, Murdoch Childrens Research Institute RCV004788436 SCV005400352 uncertain significance Usmani-Riazuddin syndrome, autosomal dominant 2023-12-21 criteria provided, single submitter clinical testing Based on the classification scheme VCGS_Germline_v1.3.4, this variant is classified as VUS-3A. Following criteria are met: 0102 - Loss of function is a known mechanism of disease in this gene and is associated with Usmani-Riazuddin syndrome, autosomal dominant (MIM#619467), whereas missense variants may exert a toxic dominant negative mechanism (PMID: 34102099). (I) 0108 - This gene is associated with both recessive and dominant disease. Biallelic variants have also been reported to cause disease (Usmani-Riazuddin syndrome, MIM#619548), but this association is not yet well-established (PanelApp Aus). (I) 0201 - Variant is predicted to cause nonsense-mediated decay (NMD) and loss of protein (premature termination codon is located at least 54 nucleotides upstream of the final exon-exon junction). (SP) 0251 - This variant is heterozygous. (I) 0304 - Variant is present in gnomAD (v2) <0.01 (1 heterozygote, 0 homozygotes). (SP) 0703 - Other NMD-predicted variants comparable to the one identified in this case have moderate previous evidence for pathogenicity. These variants have been repeatedly reported as de novo and pathogenic, and have been reported in heterozygous individuals with a neurodevelopmental disorder (ClinVar, PMID: 34102099). However, functional studies on one of these variants suggests NMD escape (PMID: 34102099). (SP) 0807 - This variant has no previous evidence of pathogenicity. (I) 0905 - No published segregation evidence has been identified for this variant. (I) 1007 - No published functional evidence has been identified for this variant. (I) 1205 - This variant has been shown to be maternally inherited (by trio analysis). (I) Legend: (SP) - Supporting pathogenic, (I) - Information, (SB) - Supporting benign

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