ClinVar Miner

Submissions for variant NM_001618.4(PARP1):c.370A>G (p.Thr124Ala)

gnomAD frequency: 0.00006  dbSNP: rs139924814
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Total submissions: 1
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Arora Lab, Fox Chase Cancer Center RCV000678681 SCV000693862 uncertain significance Hereditary renal cell carcinoma 2018-02-26 no assertion criteria provided research The p.Thr124Ala variant (rs139924814) was found by exome sequencing in a family with cancer history. Inherited from the father, it was found in two siblings affected by renal cancer but not in two other siblings who were unaffected. While reported benign by Polyphen and tolerated by SIFT, it was classified as PM1 (pathogenic moderate) by InterVar for location in a mutational hot spot or well-studied functional domain without benign variation. T124 is located in the C125C128H159C162 zinc finger ZnF2 which strongly interacts with nicked or gapped DNA during the activation by genotoxic stress that results in cleavage of the ADP-ribose moiety from NAD+ to generate poly(ADP-ribosyl)ation of specific nuclear acceptor proteins, including histones, DNA polymerases, and PARP1 itself. The p.Thr124Ala variant is extremely rare, being found at 2/24032 in African and 2/126682 in European (non Finish) in the ExAC dataset (Lek et al. 2016). No direct evidence of pathogenicity was reported, so this variant is reported as VUS.

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