ClinVar Miner

Submissions for variant NM_001868.4(CPA1):c.847G>A (p.Glu283Lys)

gnomAD frequency: 0.00002  dbSNP: rs782561684
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Total submissions: 4
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
GeneDx RCV000522708 SCV000617855 uncertain significance not provided 2023-06-08 criteria provided, single submitter clinical testing In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; This variant is associated with the following publications: (PMID: 23955596, 24522117)
Labcorp Genetics (formerly Invitae), Labcorp RCV000522708 SCV001485723 uncertain significance not provided 2025-01-01 criteria provided, single submitter clinical testing This sequence change replaces glutamic acid, which is acidic and polar, with lysine, which is basic and polar, at codon 283 of the CPA1 protein (p.Glu283Lys). This variant is present in population databases (rs782561684, gnomAD 0.0009%). This missense change has been observed in individual(s) with non-alcoholic chronic pancreatitis (PMID: 23955596). ClinVar contains an entry for this variant (Variation ID: 449568). Invitae Evidence Modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) indicates that this missense variant is expected to disrupt CPA1 protein function with a positive predictive value of 80%. Experimental studies have shown that this missense change affects CPA1 function (PMID: 23955596). 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.
Ambry Genetics RCV002448571 SCV002677616 uncertain significance Hereditary pancreatitis 2022-08-01 criteria provided, single submitter clinical testing The p.E283K variant (also known as c.847G>A), located in coding exon 8 of the CPA1 gene, results from a G to A substitution at nucleotide position 847. The glutamic acid at codon 283 is replaced by lysine, an amino acid with similar properties. This alteration has been detected in two individuals with non alcoholic pancreatitis (Witt H et al. Nat. Genet., 2013 Oct;45:1216-20). This amino acid position is highly conserved in available vertebrate species. In addition, the in silico prediction for this alteration is inconclusive. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear.
Institute of Human Genetics, University of Leipzig Medical Center RCV002448571 SCV005627536 uncertain significance Hereditary pancreatitis 2024-12-17 criteria provided, single submitter clinical testing Criteria applied: PS4_SUP,PM1_SUP,PP3

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