ClinVar Miner

Submissions for variant NM_001739.2(CA5A):c.473A>C (p.His158Pro)

gnomAD frequency: 0.00001  dbSNP: rs754607374
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Total submissions: 2
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Invitae RCV001217769 SCV001389621 uncertain significance Hyperammonemic encephalopathy due to carbonic anhydrase VA deficiency 2019-11-16 criteria provided, single submitter clinical testing 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 (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be disruptive, but these predictions have not been confirmed by published functional studies and their clinical significance is uncertain. This variant has not been reported in the literature in individuals with CA5A-related conditions. The frequency data for this variant in the population databases is considered unreliable, as metrics indicate poor data quality at this position in the ExAC database. This sequence change replaces histidine with proline at codon 158 of the CA5A protein (p.His158Pro). The histidine residue is highly conserved and there is a moderate physicochemical difference between histidine and proline.
GeneDx RCV001773487 SCV001992097 uncertain significance not provided 2019-04-16 criteria provided, single submitter clinical testing Not observed in large population cohorts (Lek et al., 2016); In silico analysis, which includes protein predictors and evolutionary conservation, supports a deleterious effect; Has not been previously published as pathogenic or benign to our knowledge

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