ClinVar Miner

Submissions for variant NM_004572.3(PKP2):c.1674_1681del (p.Thr559fs) (rs1064796069)

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Total submissions: 1
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
GeneDx RCV000478327 SCV000572471 likely pathogenic not provided 2016-12-28 criteria provided, single submitter clinical testing Although the c.1674_1681delCACTGGAT likely pathogenic variant in the PKP2 gene has not been reported to our knowledge, this variant causes a shift in reading frame starting at codon Threonine 559, changing it to a Proline, and creating a premature stop codon at position 10 of the new reading frame, denoted p.T559PfsX10. This likely pathogenic variant is expected to result in either an abnormal, truncated protein product or loss of protein from this allele through nonsense-mediated mRNA decay. Many other frameshift variants in the PKP2 gene have been reported in HGMD in association with ARVC (Stenson et al., 2014). Furthermore, the c.1674_1681delCACTGGAT variant was not observed in either the Exome Aggregation Consortium or approximately 6,500 individuals of European and African American ancestry in the NHLBI Exome Sequencing Project, indicating it is not a common benign variant in these populations. In summary, c.1674_1681delCACTGGAT in the PKP2 gene is expected to be pathogenic, as loss of function variants in this gene are strongly associated with this phenotype.

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