ClinVar Miner

Submissions for variant NM_018100.4(EFHC1):c.841C>T (p.Arg281Trp)

gnomAD frequency: 0.00001  dbSNP: rs1172185919
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Total submissions: 2
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Labcorp Genetics (formerly Invitae), Labcorp RCV003768935 SCV001198642 uncertain significance Absence seizure; Myoclonic epilepsy, juvenile, susceptibility to, 1 2020-11-11 criteria provided, single submitter clinical testing This sequence change replaces arginine with tryptophan at codon 281 of the EFHC1 protein (p.Arg281Trp). The arginine residue is moderately conserved and there is a moderate physicochemical difference between arginine and tryptophan. 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. 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: "Probably Damaging"; Align-GVGD: "Class C0"). This variant has not been reported in the literature in individuals with EFHC1-related conditions. This variant is not present in population databases (ExAC no frequency).
Ambry Genetics RCV004030951 SCV003583478 uncertain significance not specified 2021-09-01 criteria provided, single submitter clinical testing The c.841C>T (p.R281W) alteration is located in exon 5 (coding exon 5) of the EFHC1 gene. This alteration results from a C to T substitution at nucleotide position 841, causing the arginine (R) at amino acid position 281 to be replaced by a tryptophan (W). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear.

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