Description
This sequence change replaces arginine, which is basic and polar, with tryptophan, which is neutral and slightly polar, at codon 34 of the ERBB2 protein (p.Arg34Trp). This variant is present in population databases (rs149937802, gnomAD 0.02%). This variant has not been reported in the literature in individuals affected with ERBB2-related conditions. ClinVar contains an entry for this variant (Variation ID: 2144187). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is expected to disrupt ERBB2 protein function. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance.
# | Sample | Method | Observation |
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Origin | Affected | Number tested | Tissue | Purpose | Method | Individuals | Allele frequency | Families | Co-occurrences |
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1 | germline | unknown | not provided | not provided | not provided | | not provided | not provided | not provided | not provided |