rs1555459732
Variant summary
Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2
The NM_024675.4(PALB2):c.2777C>T(p.Pro926Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000206 in 1,455,778 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★★).
Frequency
Genomes: not found (cov: 32)
Exomes 𝑓: 0.0000021 ( 0 hom. )
Consequence
PALB2
NM_024675.4 missense
NM_024675.4 missense
Scores
1
8
10
Clinical Significance
Conservation
PhyloP100: 2.52
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 Uncertain_significance. Variant got 2 ACMG points.
PM2
Very rare variant in population databases, with high coverage;
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | Protein | UniProt |
---|---|---|---|---|---|---|---|---|
PALB2 | NM_024675.4 | c.2777C>T | p.Pro926Leu | missense_variant | 8/13 | ENST00000261584.9 | NP_078951.2 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Protein | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|---|
PALB2 | ENST00000261584.9 | c.2777C>T | p.Pro926Leu | missense_variant | 8/13 | 1 | NM_024675.4 | ENSP00000261584.4 |
Frequencies
GnomAD3 genomes Cov.: 32
GnomAD3 genomes
Cov.:
32
GnomAD4 exome AF: 0.00000206 AC: 3AN: 1455778Hom.: 0 Cov.: 30 AF XY: 0.00000276 AC XY: 2AN XY: 724630
GnomAD4 exome
AF:
AC:
3
AN:
1455778
Hom.:
Cov.:
30
AF XY:
AC XY:
2
AN XY:
724630
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GnomAD4 genome Cov.: 32
GnomAD4 genome
Cov.:
32
ClinVar
Significance: Uncertain significance
Submissions summary: Uncertain:5
Revision: criteria provided, multiple submitters, no conflicts
LINK: link
Submissions by phenotype
Familial cancer of breast Uncertain:2
Uncertain significance, criteria provided, single submitter | clinical testing | Labcorp Genetics (formerly Invitae), Labcorp | Jun 17, 2021 | This variant has not been reported in the literature in individuals with PALB2-related disease. 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. Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be disruptive, but these predictions have not been confirmed by published functional studies and their clinical significance is uncertain. This variant is not present in population databases (ExAC no frequency). This sequence change replaces proline with leucine at codon 926 of the PALB2 protein (p.Pro926Leu). The proline residue is highly conserved and there is a moderate physicochemical difference between proline and leucine. - |
Uncertain significance, criteria provided, single submitter | clinical testing | Baylor Genetics | Jun 07, 2023 | - - |
Hereditary cancer-predisposing syndrome Uncertain:2
Uncertain significance, criteria provided, single submitter | clinical testing | Color Diagnostics, LLC DBA Color Health | Jun 07, 2022 | This missense variant replaces proline with leucine at codon 926 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 hereditary cancer 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. - |
Uncertain significance, criteria provided, single submitter | clinical testing | Ambry Genetics | Jun 10, 2024 | The p.P926L variant (also known as c.2777C>T), located in coding exon 8 of the PALB2 gene, results from a C to T substitution at nucleotide position 2777. The proline at codon 926 is replaced by leucine, an amino acid with similar properties. This amino acid position is highly 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. - |
Familial cancer of breast;C1835817:Fanconi anemia complementation group N;C3150547:Pancreatic cancer, susceptibility to, 3 Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Fulgent Genetics, Fulgent Genetics | Nov 17, 2021 | - - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
BayesDel_addAF
Benign
T
BayesDel_noAF
Benign
CADD
Uncertain
DANN
Uncertain
DEOGEN2
Benign
T;T
Eigen
Uncertain
Eigen_PC
Uncertain
FATHMM_MKL
Uncertain
D
LIST_S2
Uncertain
D;D
M_CAP
Benign
T
MetaRNN
Uncertain
D;D
MetaSVM
Benign
T
MutationAssessor
Uncertain
.;M
PrimateAI
Uncertain
T
PROVEAN
Pathogenic
D;D
REVEL
Benign
Sift
Benign
T;T
Sift4G
Benign
T;T
Polyphen
0.98
.;D
Vest4
MutPred
0.67
.;Loss of sheet (P = 0.1158);
MVP
0.77
MPC
0.26
ClinPred
D
GERP RS
Varity_R
gMVP
Splicing
Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at