rs745533713
Variant summary
Our verdict is Pathogenic. Variant got 18 ACMG points: 18P and 0B. PVS1PM2PP5_Very_Strong
The NM_024675.4(PALB2):c.487_488del(p.Val163LeufsTer4) variant causes a frameshift change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000031 in 1,613,918 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Pathogenic (★★). Synonymous variant affecting the same amino acid position (i.e. V163V) has been classified as Likely benign. Variant results in nonsense mediated mRNA decay.
Frequency
Consequence
NM_024675.4 frameshift
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Pathogenic. Variant got 18 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
PALB2 | NM_024675.4 | c.487_488del | p.Val163LeufsTer4 | frameshift_variant | 4/13 | ENST00000261584.9 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
PALB2 | ENST00000261584.9 | c.487_488del | p.Val163LeufsTer4 | frameshift_variant | 4/13 | 1 | NM_024675.4 | P1 |
Frequencies
GnomAD3 genomes ? AF: 0.00000658 AC: 1AN: 152046Hom.: 0 Cov.: 32
GnomAD3 exomes AF: 0.00000398 AC: 1AN: 251450Hom.: 0 AF XY: 0.00000736 AC XY: 1AN XY: 135890
GnomAD4 exome AF: 0.00000274 AC: 4AN: 1461872Hom.: 0 AF XY: 0.00000413 AC XY: 3AN XY: 727236
GnomAD4 genome ? AF: 0.00000658 AC: 1AN: 152046Hom.: 0 Cov.: 32 AF XY: 0.0000135 AC XY: 1AN XY: 74254
ClinVar
Submissions by phenotype
Breast-ovarian cancer, familial, susceptibility to, 5 Pathogenic:2
Pathogenic, criteria provided, single submitter | clinical testing | Institute of Medical Genetics and Applied Genomics, University Hospital Tübingen | Jan 18, 2024 | - - |
Pathogenic, criteria provided, single submitter | clinical testing | KCCC/NGS Laboratory, Kuwait Cancer Control Center | Nov 13, 2023 | A known pathogenic variants is detected on the PALB2 gene (c.487_488delGT). This sequence change creates a premature translational stop signal (p.Val163Leufs*4) 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). This variant is not present in population databases (gnomAD no frequency). This premature translational stop signal has been observed in individual(s) with breast cancer (PMID: 28779002). ClinVar contains an entry for this variant (Variation ID: 265632). Therefore, this variant has been classified as Pathogenic. Pathogenic/likely pathogenic variants in the PALB2 cause familial susceptibility to breast-ovarian cancer (OMIM# 620442). This variant has been confirmed by Sanger sequencing. - |
not provided Pathogenic:2
Pathogenic, criteria provided, single submitter | clinical testing | GeneDx | Aug 19, 2021 | Frameshift variant predicted to result in protein truncation or nonsense mediated decay in a gene for which loss-of-function is a known mechanism of disease; Not observed at significant frequency in large population cohorts (Lek et al., 2016); This variant is associated with the following publications: (PMID: 26556299, 28779002, 29625052, 30303537, 27535533) - |
Pathogenic, criteria provided, single submitter | clinical testing | CeGaT Center for Human Genetics Tuebingen | Feb 01, 2022 | - - |
Familial cancer of breast Pathogenic:2
Pathogenic, criteria provided, single submitter | clinical testing | Myriad Genetics, Inc. | Sep 06, 2023 | This variant is considered pathogenic. This variant creates a frameshift predicted to result in premature protein truncation. - |
Pathogenic, criteria provided, single submitter | clinical testing | Invitae | Sep 15, 2023 | This sequence change creates a premature translational stop signal (p.Val163Leufs*4) 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). This variant is not present in population databases (gnomAD no frequency). This premature translational stop signal has been observed in individual(s) with breast cancer (PMID: 28779002). ClinVar contains an entry for this variant (Variation ID: 265632). For these reasons, this variant has been classified as Pathogenic. - |
Hereditary cancer-predisposing syndrome Pathogenic:2
Pathogenic, criteria provided, single submitter | clinical testing | Color Diagnostics, LLC DBA Color Health | Mar 23, 2022 | This variant deletes 2 nucleotides in exon 4 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. This variant has been reported in more than 10 individuals affected with breast cancer (PMID: 28779002, 33120919, 33471991, 34399810). This variant has been identified in 1/251450 chromosomes 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 | May 14, 2021 | The c.487_488delGT pathogenic mutation, located in coding exon 4 of the PALB2 gene, results from a deletion of two nucleotides at nucleotide positions 487 to 488, causing a translational frameshift with a predicted alternate stop codon (p.V163Lfs*4). This mutation has been identified in breast cancer patients from multiple cohorts (Schrader KA et al. JAMA Oncol. 2016 Jan;2(1):104-11; Decker B et al. J Med Genet. 2017 Nov;54(11):732-741; Girard E et al. Int J Cancer, 2019 04;144:1962-1974; Zanti M et al. Cancers (Basel), 2020 Oct;12; Dorling et al. N Engl J Med. 2021 02;384:428-439). This mutation has also been reported in a patient with pancreatic cancer (Macklin-Mantia SK et al. Hered Cancer Clin Pract, 2020 Aug;18:17) and a patient with squamous cell carcinoma of the lung (Huang KL et al. Cell, 2018 04;173:355-370.e14). In addition to the clinical data presented in the literature,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. - |
Pancreatic cancer, susceptibility to, 3 Pathogenic:1
Pathogenic, criteria provided, single submitter | clinical testing | Genetics and Molecular Pathology, SA Pathology | Feb 11, 2021 | - - |
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at