ClinVar Miner

Submissions for variant NM_006662.3(SRCAP):c.7364del (p.Pro2455fs)

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Total submissions: 1
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Broad Center for Mendelian Genomics, Broad Institute of MIT and Harvard RCV002790010 SCV003761355 likely pathogenic Floating-Harbor syndrome 2023-01-25 criteria provided, single submitter curation The heterozygous p.Pro2455LeufsTer20 variant in SRCAP was identified by our study in one individual with short stature, dysmorphic facies, hypotonia, and delayed speech and language development. Trio exome analysis showed this variant to be de novo. The p.Pro2455LeufsTer20 variant in SRCAP has not been previously reported in individuals with Floating-Harbor syndrome. This variant was absent from large population studies. This variant is predicted to cause a frameshift, which alters the protein’s amino acid sequence beginning at position 2455 and leads to a premature termination codon 20 amino acids downstream. This termination codon occurs within the last exon and is more likely to escape nonsense mediated decay (NMD) and result in a truncated protein. Heterozygous loss of function of the SRCAP gene is an established disease mechanism in Floating-Harbor syndrome. In summary, although additional studies are required to fully establish its clinical significance, this variant is likely pathogenic for Floating-Harbor syndrome. ACMG/AMP Criteria applied: PVS1_Strong, PS2_Moderate, PM2_Supporting (Richards 2015).

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