ClinVar Miner

Submissions for variant NM_001875.5(CPS1):c.4382T>A (p.Ile1461Asn)

dbSNP: rs1559142189
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Total submissions: 1
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Invitae RCV000699442 SCV000828154 uncertain significance Congenital hyperammonemia, type I 2018-04-27 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 do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Possibly Damaging"; Align-GVGD: "Class C0"). This variant has been observed in an individual affected with neonatal hyperammonemia and low citrulline (Invitae). This variant is not present in population databases (ExAC no frequency). This sequence change replaces isoleucine with asparagine at codon 1461 of the CPS1 protein (p.Ile1461Asn). The isoleucine residue is moderately conserved and there is a large physicochemical difference between isoleucine and asparagine.

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