rs515726063
Variant summary
Our verdict is Likely benign. The variant received -2 ACMG points: 0P and 2B. BP4_Moderate
The NM_024675.4(PALB2):c.1145G>T(p.Ser382Ile) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000018 in 1,613,934 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. S382R) has been classified as Likely benign.
Frequency
Consequence
NM_024675.4 missense
Scores
Clinical Significance
Conservation
Publications
- hereditary breast carcinomaInheritance: AD Classification: DEFINITIVE Submitted by: ClinGen, Ambry Genetics
- Fanconi anemia complementation group NInheritance: AR Classification: DEFINITIVE, STRONG Submitted by: G2P, Labcorp Genetics (formerly Invitae), ClinGen, Ambry Genetics
- pancreatic cancer, susceptibility to, 3Inheritance: AD Classification: STRONG Submitted by: Genomics England PanelApp, Labcorp Genetics (formerly Invitae)
- familial ovarian cancerInheritance: AD Classification: MODERATE Submitted by: ClinGen
- Fanconi anemiaInheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
- hereditary nonpolyposis colon cancerInheritance: AD Classification: LIMITED Submitted by: ClinGen
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ACMG classification
Our verdict: Likely_benign. The variant received -2 ACMG points.
Transcripts
RefSeq
Ensembl
Frequencies
GnomAD3 genomes AF: 0.00000657 AC: 1AN: 152158Hom.: 0 Cov.: 32 show subpopulations
GnomAD2 exomes AF: 0.0000159 AC: 4AN: 251206 AF XY: 0.0000221 show subpopulations
GnomAD4 exome AF: 0.0000192 AC: 28AN: 1461776Hom.: 0 Cov.: 32 AF XY: 0.0000165 AC XY: 12AN XY: 727200 show subpopulations
Age Distribution
GnomAD4 genome AF: 0.00000657 AC: 1AN: 152158Hom.: 0 Cov.: 32 AF XY: 0.0000135 AC XY: 1AN XY: 74332 show subpopulations
ClinVar
Submissions by phenotype
Familial cancer of breast Uncertain:4Benign:1
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This variant is considered likely benign. This variant is strongly associated with less severe personal and family histories of cancer, typical for individuals without pathogenic variants in this gene [PMID: 25085752]. -
This sequence change replaces serine, which is neutral and polar, with isoleucine, which is neutral and non-polar, at codon 382 of the PALB2 protein (p.Ser382Ile). This variant is present in population databases (rs515726063, gnomAD 0.004%). This missense change has been observed in individual(s) with breast or ovarian cancer (PMID: 22241545, 26283626, 26315354). ClinVar contains an entry for this variant (Variation ID: 126591). Invitae Evidence Modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) indicates that this missense variant is not expected to disrupt PALB2 protein function with a negative predictive value of 80%. Experimental studies have shown that this missense change does not substantially affect PALB2 function (PMID: 31636395). 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. -
Curators: Marc Tischkowitz, Arleen D. Auerbach. Submitter to LOVD: Marc Tischkowitz. -
This submission and the accompanying classification are no longer maintained by the submitter. For more information on current observations and classification, please contact variantquestions@myriad.com. -
Hereditary cancer-predisposing syndrome Uncertain:2Benign:1
This missense variant replaces serine with isoleucine at codon 382 of the PALB2 protein. Computational prediction suggests that this variant may not impact protein structure and function. A functional study has shown that this variant does not affect homology-directed repair activity of the PALB2 protein (PMID: 31636395). This variant has been reported in individuals affected with breast cancer (PMID: 22241545, 26283626) and ovarian cancer (PMID: 26315354). This variant has not shown a significant association with breast cancer in a large case-control study (OR=2.21, 95%CI 0.429 to 11.394, p-value=0.459; PMID: 33471991). This variant has also been identified in 5/282604 chromosomes 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. -
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This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -
not provided Uncertain:2
Observed in individuals with breast/ovarian cancer and also in controls (PMID: 22241545, 26283626, 28779002); Published functional studies suggest no damaging effect: HDR activity comparable to wild type (PMID: 31636395); Not observed at significant frequency in large population cohorts (gnomAD); In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; This variant is associated with the following publications: (PMID: 22241545, 28779002, 26283626, 26315354, 31636395) -
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Familial cancer of breast;C1835817:Fanconi anemia complementation group N;C3150547:Pancreatic cancer, susceptibility to, 3 Uncertain:1
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Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at