ClinVar Miner

Submissions for variant NM_024675.4(PALB2):c.187C>T (p.Leu63Phe)

gnomAD frequency: 0.00002  dbSNP: rs730881899
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Total submissions: 5
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
GeneDx RCV000160860 SCV000211541 uncertain significance not provided 2023-12-17 criteria provided, single submitter clinical testing Not observed at significant frequency in large population cohorts (gnomAD); In silico analysis supports that this missense variant does not alter protein structure/function; Has not been previously published as pathogenic or benign to our knowledge; This variant is associated with the following publications: (PMID: 20871615, 19369211)
Labcorp Genetics (formerly Invitae), Labcorp RCV000469950 SCV000550660 uncertain significance Familial cancer of breast 2023-12-08 criteria provided, single submitter clinical testing This sequence change replaces leucine, which is neutral and non-polar, with phenylalanine, which is neutral and non-polar, at codon 63 of the PALB2 protein (p.Leu63Phe). This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with PALB2-related conditions. ClinVar contains an entry for this variant (Variation ID: 182780). An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant is likely to be tolerated. 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 RCV000576103 SCV000665366 uncertain significance Hereditary cancer-predisposing syndrome 2023-06-06 criteria provided, single submitter clinical testing The p.L63F variant (also known as c.187C>T), located in coding exon 3 of the PALB2 gene, results from a C to T substitution at nucleotide position 187. The leucine at codon 63 is replaced by phenylalanine, an amino acid with highly similar properties. This amino acid position is poorly conserved in available vertebrate species. In addition, this alteration is predicted to be tolerated by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear.
Color Diagnostics, LLC DBA Color Health RCV000576103 SCV000685907 uncertain significance Hereditary cancer-predisposing syndrome 2023-12-05 criteria provided, single submitter clinical testing This missense variant replaces leucine with phenylalanine at codon 63 of the PALB2 protein. Computational prediction suggests that this variant may not impact protein structure and function (internally defined REVEL score threshold <= 0.5, PMID: 27666373). To our knowledge, functional studies have not been reported for this variant. This variant has not been reported in individuals affected with PALB2-related disorders in the literature. This variant has not been identified in the general population by the Genome Aggregation Database (gnomAD). The available evidence is insufficient to determine the role of this variant in disease conclusively. Therefore, this variant is classified as a Variant of Uncertain Significance.
Fulgent Genetics, Fulgent Genetics RCV000765279 SCV000896532 uncertain significance Familial cancer of breast; Fanconi anemia complementation group N; Pancreatic cancer, susceptibility to, 3 2018-10-31 criteria provided, single submitter clinical testing

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