ClinVar Miner

Submissions for variant NM_002470.4(MYH3):c.1504T>G (p.Tyr502Asp)

dbSNP: rs797045727
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Total submissions: 1
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Genetic Services Laboratory, University of Chicago RCV000193979 SCV000595882 likely pathogenic Freeman-Sheldon syndrome 2015-10-30 no assertion criteria provided clinical testing DNA sequence analysis of the MYH3 gene demonstrated a sequence change, c.1504T>G, in exon 15 that results in an amino acid change, p.Tyr502Asp. The p.Tyr502Asp change affects a highly conserved amino acid residue located in a domain of the MYH3 protein that is known to be functional. The p.Tyr502Asp substitution appears to be deleterious/possibly damaging using several in-silico pathogenicity prediction tools (SIFT PolyPhen2, Align GVGD, MutationTaster). This particular amino acid change does not appear to have been described in the literature in other patients with MYH3-related disorders or as a benign sequence change in the MYH3 gene. The p.Tyr502Asp amino acid change occurs in a region of the MYH3 gene where other missense sequence changes have been described in patients with MYH3-related distal. arthrogryposis. To date, the vast majority of pathogenic variants described in the MYH3 gene have been missense. In addition, this variant was found to be present in the de novo state in the patient tested in our laboratory.

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