Variant rs180177083 details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Pathogenic. Variant got 16 ACMG points: 16P and 0B. PVS1PP5_Very_Strong

The NM_024675.4(PALB2):c.196C>T(p.Gln66*) variant causes a stop gained change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000161 in 1,612,200 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (★★). Variant results in nonsense mediated mRNA decay.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000017 ( 0 hom. )

Consequence

PALB2
NM_024675.4 stop_gained

Scores

Clinical Significance

Pathogenic/Likely pathogenic criteria provided, multiple submitters, no conflicts P:17

Conservation

PhyloP100: 2.32

Variant links:

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]

PALB2 links:

PALB2 (HGNC:):

PALB2 links:

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ACMG classification

Classification made for transcript

Verdict is Pathogenic. Variant got 16 ACMG points.

PVS1

Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.

PP5

Variant 16-23637865-G-A is Pathogenic according to our data. Variant chr16-23637865-G-A is described in ClinVar as [Likely_pathogenic]. Clinvar id is 126629.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr16-23637865-G-A is described in Lovd as [Pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
PALB2	NM_024675.4 linkuse as main transcript	c.196C>T	p.Gln66*	stop_gained	3/13	ENST00000261584.9	NP_078951.2	Q86YC2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
PALB2	ENST00000261584.9 linkuse as main transcript	c.196C>T	p.Gln66*	stop_gained	3/13	1	NM_024675.4	ENSP00000261584.4		Q86YC2

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152190

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.00000795

AC:

AN:

251474

Hom.:

AF XY:

0.00

AC XY:

AN XY:

135910

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000176

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000171

AC:

AN:

1460010

Hom.:

Cov.:

AF XY:

0.0000165

AC XY:

AN XY:

726452

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000252

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000216

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152190

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74364

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.00000378

ClinVar

Significance: Pathogenic/Likely pathogenic

Submissions summary: Pathogenic:17

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Familial cancer of breast

Pathogenic:7

Pathogenic, criteria provided, single submitter	clinical testing	Myriad Genetics, Inc.	Mar 31, 2023	This variant is considered pathogenic. This variant creates a termination codon and is predicted to result in premature protein truncation. -
Likely pathogenic, criteria provided, single submitter	case-control	Cancer Genetics Laboratory, Peter MacCallum Cancer Centre	Jun 01, 2015	- -
Likely pathogenic, criteria provided, single submitter	clinical testing	Counsyl	Dec 07, 2015	- -
Pathogenic, criteria provided, single submitter	clinical testing	Institute of Human Genetics, University of Leipzig Medical Center	Jan 01, 2019	- -
Pathogenic, no assertion criteria provided	curation	Leiden Open Variation Database	May 13, 2019	Curators: Marc Tischkowitz, Arleen D. Auerbach. Submitter to LOVD: Marc Tischkowitz. -
Pathogenic, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Jan 26, 2024	This sequence change creates a premature translational stop signal (p.Gln66*) 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 present in population databases (rs180177083, gnomAD 0.002%). This premature translational stop signal has been observed in individual(s) with breast and ovarian cancer (PMID: 21285249, 21409391, 23448497, 26534844). ClinVar contains an entry for this variant (Variation ID: 126629). For these reasons, this variant has been classified as Pathogenic. -
Pathogenic, criteria provided, single submitter	clinical testing	Baylor Genetics	Mar 02, 2024	- -

not provided

Pathogenic:4

Pathogenic, criteria provided, single submitter	clinical testing	Institute of Medical Genetics and Applied Genomics, University Hospital Tübingen	Oct 23, 2020	- -
Likely pathogenic, criteria provided, single submitter	clinical testing	Mayo Clinic Laboratories, Mayo Clinic	Oct 30, 2023	PM2, PVS1 -
Pathogenic, criteria provided, single submitter	clinical testing	Quest Diagnostics Nichols Institute San Juan Capistrano	Mar 30, 2021	This nonsense variant causes the premature termination of PALB2 protein synthesis. In addition, it has been reported in individuals and families affected with breast and/or ovarian cancer in the published literature (PMIDs: 21285249 (2011), 21409391 (2011), 23448497 (2013), 26534844 (2016), 27878467 (2016), and 28779002 (2017)). Based on the available information, this variant is classified as pathogenic. -
Pathogenic, criteria provided, single submitter	clinical testing	GeneDx	Nov 09, 2023	Nonsense 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 (gnomAD); Truncating variants in this gene are considered pathogenic by a well-established clinical consortium and/or database; This variant is associated with the following publications: (PMID: 21409391, 25447460, 17420451, 27878467, 22692731, 25099575, 25863477, 26283626, 25525159, 23935381, 24206657, 27485037, 23448497, 26534844, 24870022, 28779002, 26786923, 21285249, 32853339, 34308104, 33763779, 33113089, 28888541, 34113003, 29922827, 33471991) -

Hereditary cancer-predisposing syndrome

Pathogenic:4

Pathogenic, criteria provided, single submitter	clinical testing	Color Diagnostics, LLC DBA Color Health	May 10, 2023	This variant changes 1 nucleotide in exon 3 of the PALB2 gene, creating a premature translation stop signal. This variant is expected to result in an absent or non-functional protein product. To our knowledge, functional studies have not been reported for this variant. This variant has been reported in individuals affected with breast cancer (PMID: 21285249, 21409391, 23448497, 23787919, 24206657, 25099575, 26534844, 26786923, 27878467, 34113003). This variant has been detected in a breast cancer case-control meta-analysis in 4/60466 cases and 1/53461 unaffected individuals (PMID: 33471991; Leiden Open Variation Database DB-ID PALB2_010022). This variant has been identified in 2/251474 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	Knight Diagnostic Laboratories, Oregon Health and Sciences University	Apr 24, 2019	- -
Pathogenic, no assertion criteria provided	clinical testing	True Health Diagnostics	Apr 09, 2018	- -
Pathogenic, criteria provided, single submitter	clinical testing	Ambry Genetics	Sep 13, 2024	The p.Q66* pathogenic mutation (also known as c.196C>T), located in coding exon 3 of the PALB2 gene, results from a C to T substitution at nucleotide position 196. This changes the amino acid from a glutamine to a stop codon within coding exon 3. This mutation has been identified in multiple individuals and families of various ethnicities with breast cancer (Casadei S et al. Cancer Res, 2011 Mar;71:2222-9; Wong MW et al. Breast Cancer Res Treat, 2011 Jun;127:853-9; Teo ZL et al. Breast Cancer Res., 2013 Feb;15:R17; Nguyen-Dumont T et al. BMC Med Genomics, 2013 Nov;6:48; Antoniou AC et al. N Engl J Med, 2014 Aug;371:497-506; Thompson ER et al. Breast Cancer Res, 2015 Aug;17:111; Li J et al. J Med Genet, 2016 Jan;53:34-42; Thompson ER et al. J Clin Oncol, 2016 May;34:1455-9; Woodward ER et al. Genet Med, 2021 Jun; Dorling et al. N Engl J Med. 2021 02;384:428-439). 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. -

Breast and/or ovarian cancer

Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

CHEO Genetics Diagnostic Laboratory, Children's Hospital of Eastern Ontario

Feb 21, 2020

- -

Hereditary breast ovarian cancer syndrome

Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Mar 04, 2021

Variant summary: PALB2 c.196C>T (p.Gln66X) results in a premature termination codon, predicted to cause a truncation of the encoded protein or absence of the protein due to nonsense mediated decay, which are commonly known mechanisms for disease. Truncations downstream of this position have been classified as pathogenic by our laboratory. The variant allele was found at a frequency of 8e-06 in 251474 control chromosomes. c.196C>T has been reported in the literature in multiple individuals affected with Hereditary Breast And Ovarian Cancer Syndrome (e.g. Casadei_2011, Wong_2011, Nguyen-Dumont_2013, Thompson_2015). These data indicate that the variant is very likely to be associated with disease. To our knowledge, no experimental evidence demonstrating an impact on protein function has been reported. 12 other ClinVar submitters (evaluation after 2014) have cited the variant as pathogenic/likely pathogenic. Based on the evidence outlined above, the variant was classified as pathogenic. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_addAF

Pathogenic

0.59

BayesDel_noAF

Pathogenic

0.20

CADD

Pathogenic

DANN

Uncertain

0.99

Eigen

Uncertain

0.41

Eigen_PC

Benign

0.098

FATHMM_MKL

Benign

0.18

Vest4

0.54

GERP RS

4.7

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

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