ClinVar Miner

Submissions for variant NM_002608.4(PDGFB):c.232C>T (p.Arg78Cys)

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Total submissions: 1
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Labcorp Genetics (formerly Invitae), Labcorp RCV005196327 SCV005839884 likely pathogenic not provided 2024-04-18 criteria provided, single submitter clinical testing This sequence change replaces arginine, which is basic and polar, with cysteine, which is neutral and slightly polar, at codon 78 of the PDGFB protein (p.Arg78Cys). This variant is not present in population databases (gnomAD no frequency). This missense change has been observed in individuals with basal ganglia calcification (PMID: 27984190, 28556368; Invitae). It has also been observed to segregate with disease in related individuals. 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 not expected to disrupt PDGFB protein function with a negative predictive value of 80%. In summary, the currently available evidence indicates that the variant is pathogenic, but additional data are needed to prove that conclusively. Therefore, this variant has been classified as Likely Pathogenic.

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