rs876658348
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Variant summary
Our verdict is Pathogenic. Variant got 18 ACMG points: 18P and 0B. PVS1PM2PP5_Very_Strong
The NM_024675.4(PALB2):βc.2470delβ(p.Cys824ValfsTer27) variant causes a frameshift change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,892 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Likely pathogenic (β β ). Variant results in nonsense mediated mRNA decay.
Frequency
Genomes: not found (cov: 32)
Exomes π: 6.8e-7 ( 0 hom. )
Consequence
PALB2
NM_024675.4 frameshift
NM_024675.4 frameshift
Scores
Not classified
Clinical Significance
Conservation
PhyloP100: -0.397
Genes affected
PALB2 (HGNC:26144): (partner and localizer of BRCA2) This gene encodes a protein that may function in tumor suppression. This protein binds to and colocalizes with the breast cancer 2 early onset protein (BRCA2) in nuclear foci and likely permits the stable intranuclear localization and accumulation of BRCA2. [provided by RefSeq, Jul 2008]
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ACMG classification
Classification made for transcript
Verdict is Pathogenic. Variant got 18 ACMG points.
PVS1
?
Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.
PM2
?
Very rare variant in population databases, with high coverage;
PP5
?
Variant 16-23629683-CA-C is Pathogenic according to our data. Variant chr16-23629683-CA-C is described in ClinVar as [Likely_pathogenic]. Clinvar id is 230043.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr16-23629683-CA-C is described in Lovd as [Likely_pathogenic]. Variant chr16-23629683-CA-C is described in Lovd as [Pathogenic].
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
PALB2 | NM_024675.4 | c.2470del | p.Cys824ValfsTer27 | frameshift_variant | 5/13 | ENST00000261584.9 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
PALB2 | ENST00000261584.9 | c.2470del | p.Cys824ValfsTer27 | frameshift_variant | 5/13 | 1 | NM_024675.4 | P1 |
Frequencies
GnomAD3 genomes ? Cov.: 32
GnomAD3 genomes
?
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32
GnomAD4 exome AF: 6.84e-7 AC: 1AN: 1461892Hom.: 0 Cov.: 33 AF XY: 0.00000138 AC XY: 1AN XY: 727248
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GnomAD4 genome ? Cov.: 32
GnomAD4 genome
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32
ClinVar
Significance: Pathogenic/Likely pathogenic
Submissions summary: Pathogenic:7
Revision: criteria provided, multiple submitters, no conflicts
LINK: link
Submissions by phenotype
Familial cancer of breast Pathogenic:3
Pathogenic, criteria provided, single submitter | clinical testing | Invitae | Jul 29, 2023 | This sequence change creates a premature translational stop signal (p.Cys824Valfs*27) in the PALB2 gene. It is expected to result in an absent or disrupted protein product. Loss-of-function variants in PALB2 are known to be pathogenic (PMID: 17200668, 17200671, 17200672, 24136930, 25099575). For these reasons, this variant has been classified as Pathogenic. ClinVar contains an entry for this variant (Variation ID: 230043). This variant has not been reported in the literature in individuals affected with PALB2-related conditions. This variant is not present in population databases (gnomAD no frequency). - |
Pathogenic, criteria provided, single submitter | clinical testing | Myriad Genetics, Inc. | Sep 12, 2023 | This variant is considered pathogenic. This variant creates a frameshift predicted to result in premature protein truncation. - |
Likely pathogenic, criteria provided, single submitter | clinical testing | Baylor Genetics | Oct 17, 2023 | - - |
Hereditary cancer-predisposing syndrome Pathogenic:2
Pathogenic, criteria provided, single submitter | clinical testing | Color Diagnostics, LLC DBA Color Health | Mar 16, 2022 | This variant deletes 1 nucleotide in exon 5 of the PALB2 gene, creating a frameshift and premature translation stop signal. This variant is expected to result in an absent or non-functional protein product. To our knowledge, this variant has not been reported in individuals affected with hereditary cancer in the literature. This variant has not been identified in the general population by the Genome Aggregation Database (gnomAD). Loss of PALB2 function is a known mechanism of disease (clinicalgenome.org). Based on the available evidence, this variant is classified as Pathogenic. - |
Pathogenic, criteria provided, single submitter | clinical testing | Ambry Genetics | Feb 14, 2023 | The c.2470delT pathogenic mutation, located in coding exon 5 of the PALB2 gene, results from a deletion of one nucleotide at nucleotide position 2470, causing a translational frameshift with a predicted alternate stop codon (p.C824Vfs*27). This variant is considered to be rare based on population cohorts in the Genome Aggregation Database (gnomAD). This alteration is expected to result in loss of function by premature protein truncation or nonsense-mediated mRNA decay. As such, this alteration is interpreted as a disease-causing mutation. - |
not provided Pathogenic:1
Pathogenic, criteria provided, single submitter | clinical testing | Quest Diagnostics Nichols Institute San Juan Capistrano | Jan 14, 2021 | This frameshift variant causes the premature termination of PALB2 protein synthesis. It has been reported along with PALB2 c.2834+2T>C in an individual with Fanconi anemia in the published literature (PMID: 30792206 (2019)). Therefore, the variant is classified as pathogenic. - |
Gastric cancer Pathogenic:1
Pathogenic, no assertion criteria provided | research | Laboratory for Genotyping Development, RIKEN | Jul 01, 2021 | - - |
Computational scores
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SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at