ClinVar Miner

Submissions for variant NM_005373.3(MPL):c.1168C>T (p.Arg390Cys)

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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 RCV002913791 SCV003254488 uncertain significance Congenital amegakaryocytic thrombocytopenia; Essential thrombocythemia 2022-07-11 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 390 of the MPL protein (p.Arg390Cys). This variant is present in population databases (rs373621350, gnomAD 0.04%). This variant has not been reported in the literature in individuals affected with MPL-related conditions. Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Benign"; Align-GVGD: "Class C15"). 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.

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