ClinVar Miner

Submissions for variant NM_000098.3(CPT2):c.84C>T (p.Gly28=)

gnomAD frequency: 0.00007  dbSNP: rs772541454
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Total submissions: 4
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Invitae RCV000966659 SCV001114002 likely benign Carnitine palmitoyltransferase II deficiency 2024-01-25 criteria provided, single submitter clinical testing
Illumina Laboratory Services, Illumina RCV000966659 SCV001252949 uncertain significance Carnitine palmitoyltransferase II deficiency 2018-01-12 criteria provided, single submitter clinical testing This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease.
Women's Health and Genetics/Laboratory Corporation of America, LabCorp RCV001192888 SCV001361324 benign not specified 2019-03-01 criteria provided, single submitter clinical testing Variant summary: CPT2 c.84C>T alters a conserved nucleotide resulting in a synonymous change. 5/5 computational tools predict no significant impact on normal splicing. However, these predictions have yet to be confirmed by functional studies. The variant allele was found at a frequency of 0.00017 in 155194 control chromosomes, predominantly at a frequency of 0.0025 within the Ashkenazi Jewish subpopulation in the gnomAD database. The observed variant frequency within Ashkenazi Jewish control individuals in the gnomAD database is approximately 1.6 fold of the estimated maximal expected allele frequency for a pathogenic variant in CPT2 causing Carnitine Palmitoyltransferase II Deficiency phenotype (0.0016), strongly suggesting that the variant is a benign polymorphism found primarily in populations of Ashkenazi Jewish origin. To our knowledge, no occurrence of c.84C>T in individuals affected with Carnitine Palmitoyltransferase II Deficiency and no experimental evidence demonstrating its impact on protein function have been reported. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar after 2014. Based on the evidence outlined above, the variant was classified as benign.
Natera, Inc. RCV000966659 SCV001454114 uncertain significance Carnitine palmitoyltransferase II deficiency 2020-01-17 no assertion criteria provided clinical testing

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