ClinVar Miner

Submissions for variant NM_001009944.3(PKD1):c.4563T>C (p.Gly1521=)

gnomAD frequency: 0.00048  dbSNP: rs143843155
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Total submissions: 3
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Mendelics RCV000989459 SCV001139789 likely benign Polycystic kidney disease, adult type 2019-05-28 criteria provided, single submitter clinical testing
GeneDx RCV001732006 SCV001982566 likely benign not provided 2021-03-17 criteria provided, single submitter clinical testing
Department of Pathology and Laboratory Medicine, Sinai Health System RCV001292301 SCV001480580 likely benign Polycystic kidney disease no assertion criteria provided clinical testing The PKD1 p.Gly1521= variant was not identified in the literature nor was it identified in the ClinVar, GeneInsight-COGR, LOVD 3.0, or PKD1-LOVD databases. The variant was identified in dbSNP (ID: rs143843155) as “NA”, and the ADPKD Mutation Database (classified as likely neutral by Athena Diagnostics). The variant was identified in control databases in 146 of 275350 chromosomes at a frequency of 0.0005 increasing the likelihood this could be a low frequency benign variant (Genome Aggregation Database Feb 27, 2017). Breakdown of the observations by population include African in 4 of 23804 chromosomes (freq: 0.0002), Other in 1 of 6422 chromosomes (freq: 0.0002), Latino in 18 of 34396 chromosomes (freq: 0.0005), European in 120 of 125346 chromosomes (freq: 0.001), Ashkenazi Jewish in 1 of 10080 chromosomes (freq: 0.0001), and Finnish in 2 of 25710 chromosomes (freq: 0.00008), while the variant was not observed in the East Asian or South Asian populations. In addition we cannot be certain that data from control databases is specific to PKD1 and not from one of the six PKD1 pseudogenes. The p.Gly1521Gly variant is not expected to have clinical significance because it does not result in a change of amino acid and is not located in a known consensus splice site. In addition, in silico or computational prediction software programs (SpliceSiteFinder, MaxEntScan, NNSPLICE, GeneSplicer, HumanSpliceFinder) do not predict a difference in splicing. In summary, based on the above information the clinical significance of this variant cannot be determined with certainty at this time although we would lean towards a more benign role for this variant. This variant is classified as likely benign.

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