Our verdict is Pathogenic. The variant received 12 ACMG points: 12P and 0B. PVS1PM2PP5_Moderate
The NM_024675.4(PALB2):c.2869A>T(p.Lys957*) variant causes a stop gained change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (★). Synonymous variant affecting the same amino acid position (i.e. K957K) has been classified as Likely benign. Variant results in nonsense mediated mRNA decay.
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]
PALB2 Gene-Disease associations (from GenCC):
hereditary breast carcinoma
Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen, Ambry Genetics
Our verdict: Pathogenic. The variant received 12 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 16-23623096-T-A is Pathogenic according to our data. Variant chr16-23623096-T-A is described in CliVar as Pathogenic. Clinvar id is 530052.Status of the report is criteria_provided_single_submitter, 1 stars. Variant chr16-23623096-T-A is described in CliVar as Pathogenic. Clinvar id is 530052.Status of the report is criteria_provided_single_submitter, 1 stars. Variant chr16-23623096-T-A is described in CliVar as Pathogenic. Clinvar id is 530052.Status of the report is criteria_provided_single_submitter, 1 stars. Variant chr16-23623096-T-A is described in CliVar as Pathogenic. Clinvar id is 530052.Status of the report is criteria_provided_single_submitter, 1 stars. Variant chr16-23623096-T-A is described in CliVar as Pathogenic. Clinvar id is 530052.Status of the report is criteria_provided_single_submitter, 1 stars. Variant chr16-23623096-T-A is described in CliVar as Pathogenic. Clinvar id is 530052.Status of the report is criteria_provided_single_submitter, 1 stars. Variant chr16-23623096-T-A is described in CliVar as Pathogenic. Clinvar id is 530052.Status of the report is criteria_provided_single_submitter, 1 stars. Variant chr16-23623096-T-A is described in CliVar as Pathogenic. Clinvar id is 530052.Status of the report is criteria_provided_single_submitter, 1 stars. Variant chr16-23623096-T-A is described in CliVar as Pathogenic. Clinvar id is 530052.Status of the report is criteria_provided_single_submitter, 1 stars. Variant chr16-23623096-T-A is described in CliVar as Pathogenic. Clinvar id is 530052.Status of the report is criteria_provided_single_submitter, 1 stars. Variant chr16-23623096-T-A is described in CliVar as Pathogenic. Clinvar id is 530052.Status of the report is criteria_provided_single_submitter, 1 stars. Variant chr16-23623096-T-A is described in CliVar as Pathogenic. Clinvar id is 530052.Status of the report is criteria_provided_single_submitter, 1 stars. Variant chr16-23623096-T-A is described in CliVar as Pathogenic. Clinvar id is 530052.Status of the report is criteria_provided_single_submitter, 1 stars. Variant chr16-23623096-T-A is described in CliVar as Pathogenic. Clinvar id is 530052.Status of the report is criteria_provided_single_submitter, 1 stars. Variant chr16-23623096-T-A is described in CliVar as Pathogenic. Clinvar id is 530052.Status of the report is criteria_provided_single_submitter, 1 stars. Variant chr16-23623096-T-A is described in CliVar as Pathogenic. Clinvar id is 530052.Status of the report is criteria_provided_single_submitter, 1 stars. Variant chr16-23623096-T-A is described in CliVar as Pathogenic. Clinvar id is 530052.Status of the report is criteria_provided_single_submitter, 1 stars. Variant chr16-23623096-T-A is described in CliVar as Pathogenic. Clinvar id is 530052.Status of the report is criteria_provided_single_submitter, 1 stars. Variant chr16-23623096-T-A is described in CliVar as Pathogenic. Clinvar id is 530052.Status of the report is criteria_provided_single_submitter, 1 stars. Variant chr16-23623096-T-A is described in CliVar as Pathogenic. Clinvar id is 530052.Status of the report is criteria_provided_single_submitter, 1 stars. Variant chr16-23623096-T-A is described in CliVar as Pathogenic. Clinvar id is 530052.Status of the report is criteria_provided_single_submitter, 1 stars. Variant chr16-23623096-T-A is described in CliVar as Pathogenic. Clinvar id is 530052.Status of the report is criteria_provided_single_submitter, 1 stars. Variant chr16-23623096-T-A is described in CliVar as Pathogenic. Clinvar id is 530052.Status of the report is criteria_provided_single_submitter, 1 stars. Variant chr16-23623096-T-A is described in CliVar as Pathogenic. Clinvar id is 530052.Status of the report is criteria_provided_single_submitter, 1 stars. Variant chr16-23623096-T-A is described in CliVar as Pathogenic. Clinvar id is 530052.Status of the report is criteria_provided_single_submitter, 1 stars. Variant chr16-23623096-T-A is described in CliVar as Pathogenic. Clinvar id is 530052.Status of the report is criteria_provided_single_submitter, 1 stars. Variant chr16-23623096-T-A is described in CliVar as Pathogenic. Clinvar id is 530052.Status of the report is criteria_provided_single_submitter, 1 stars. Variant chr16-23623096-T-A is described in CliVar as Pathogenic. Clinvar id is 530052.Status of the report is criteria_provided_single_submitter, 1 stars. Variant chr16-23623096-T-A is described in CliVar as Pathogenic. Clinvar id is 530052.Status of the report is criteria_provided_single_submitter, 1 stars. Variant chr16-23623096-T-A is described in CliVar as Pathogenic. Clinvar id is 530052.Status of the report is criteria_provided_single_submitter, 1 stars. Variant chr16-23623096-T-A is described in CliVar as Pathogenic. Clinvar id is 530052.Status of the report is criteria_provided_single_submitter, 1 stars. Variant chr16-23623096-T-A is described in CliVar as Pathogenic. Clinvar id is 530052.Status of the report is criteria_provided_single_submitter, 1 stars. Variant chr16-23623096-T-A is described in CliVar as Pathogenic. Clinvar id is 530052.Status of the report is criteria_provided_single_submitter, 1 stars.
For these reasons, this variant has been classified as Pathogenic. Loss-of-function variants in PALB2 are known to be pathogenic (PMID: 17200668, 24136930, 25099575). This variant has been observed in individuals affected with breast cancer (PMID: 28724667). This variant is not present in population databases (ExAC no frequency). This sequence change creates a premature translational stop signal (p.Lys957*) in the PALB2 gene. It is expected to result in an absent or disrupted protein product. -