ClinVar Miner

Submissions for variant NM_001101426.4(CRPPA):c.868G>A (p.Asp290Asn)

dbSNP: rs1784249249
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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 RCV001226066 SCV001398362 uncertain significance Muscular dystrophy-dystroglycanopathy (congenital with brain and eye anomalies), type A, 7; Autosomal recessive limb-girdle muscular dystrophy type 2U 2019-07-09 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 output the following: SIFT: "Tolerated"; PolyPhen-2: "Benign"; Align-GVGD: "Class C0". The asparagine amino acid residue is found in multiple mammalian species, suggesting that this missense change does not adversely affect protein function. 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 ISPD-related conditions. This variant is not present in population databases (ExAC no frequency). This sequence change replaces aspartic acid with asparagine at codon 290 of the ISPD protein (p.Asp290Asn). The aspartic acid residue is weakly conserved and there is a small physicochemical difference between aspartic acid and asparagine.

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