rs373483056

Variant names:

Your query was ambiguous. Multiple possible variants found:

Variant summary

Our verdict is Likely benign. The variant received -1 ACMG points: 0P and 1B. BP4

The ENST00000568219.5(PALB2):c.-786C>T variant causes a 5 prime UTR premature start codon gain change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000378 in 1,613,840 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.000046 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000037 ( 0 hom. )

Consequence

PALB2
ENST00000568219.5 5_prime_UTR_premature_start_codon_gain

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:13B:1

Conservation

PhyloP100: 2.67

Publications

11 publications found

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 Gene-Disease associations (from GenCC):

hereditary breast carcinoma
Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen, Ambry Genetics
Fanconi anemia complementation group N
Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: G2P, Labcorp Genetics (formerly Invitae), ClinGen, Ambry Genetics
pancreatic cancer, susceptibility to, 3
Inheritance: AD Classification: STRONG Submitted by: Genomics England PanelApp, Labcorp Genetics (formerly Invitae)
familial ovarian cancer
Inheritance: AD Classification: MODERATE Submitted by: ClinGen
Fanconi anemia
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
hereditary nonpolyposis colon cancer
Inheritance: AD Classification: LIMITED Submitted by: ClinGen

PALB2 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -1 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.41391242).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PALB2	NM_024675.4 link	c.100C>T	p.Arg34Cys	missense_variant	Exon 2 of 13	ENST00000261584.9	NP_078951.2	Q86YC2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PALB2	ENST00000261584.9 link	c.100C>T	p.Arg34Cys	missense_variant	Exon 2 of 13	1	NM_024675.4	ENSP00000261584.4		Q86YC2

Frequencies

GnomAD3 genomes

AF:

0.0000460

AC:

AN:

152146

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000131

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:

0.0000588

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000159

AC:

AN:

251484

AF XY:

0.0000147

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 FIN exome

AF:

0.0000924

Gnomad NFE exome

AF:

0.00000879

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000369

AC:

AN:

1461576

Hom.:

Cov.:

AF XY:

0.0000371

AC XY:

AN XY:

727110

show subpopulations

African (AFR)

AF:

0.0000896

AC:

AN:

33472

American (AMR)

AF:

0.0000224

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26134

East Asian (EAS)

AF:

0.0000252

AC:

AN:

39700

South Asian (SAS)

AF:

0.0000232

AC:

AN:

86246

European-Finnish (FIN)

AF:

0.0000936

AC:

AN:

53420

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.0000360

AC:

AN:

1111720

Other (OTH)

AF:

0.0000331

AC:

AN:

60392

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.456

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.0000460

AC:

AN:

152264

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74462

show subpopulations

African (AFR)

AF:

0.0000241

AC:

AN:

41546

American (AMR)

AF:

0.000131

AC:

AN:

15290

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5186

South Asian (SAS)

AF:

0.00

AC:

AN:

4816

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10622

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000588

AC:

AN:

68016

Other (OTH)

AF:

0.00

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.539

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.0000712

Hom.:

Bravo

AF:

0.0000453

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.0000330

AC:

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:13Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Hereditary cancer-predisposing syndrome

Uncertain:5

Sep 18, 2024

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The p.R34C variant (also known as c.100C>T), located in coding exon 2 of the PALB2 gene, results from a C to T substitution at nucleotide position 100. The arginine at codon 34 is replaced by cysteine, an amino acid with highly dissimilar properties. In a homology-directed DNA repair (HDR) assay, this alteration was found to be functionally normal (Wiltshire T et al. Genet. Med., 2019 Oct, Boonen et al. Nat. Comms. 2019 Nov). In a PARP inhibitor sensitivity assay, this alteration was found to be functionally normal (Boonen et al. Nat. Comms. 2019 Nov). This variant was reported in both cases and controls from case control studies including breast cancer patients of various ancestries (Dorling et al. N Engl J Med. 2021 02;384:428-439; Momozawa Y et al. Nat Commun, 2018 10;9:4083; Hauke J et al. Cancer Med, 2018 04;7:1349-1358). This alteration has also been reported in patients with leukemia and pancreatic cancer (Lu C et al. Nat Commun. 2015 Dec 22;6:10086; Hu C et al. Cancer Epidemiol Biomarkers Prev, 2016 Jan;25:207-11). This amino acid position is highly conserved in available vertebrate species. In addition, the in silico prediction for this alteration is inconclusive. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -

Feb 11, 2025

Color Diagnostics, LLC DBA Color Health

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This missense variant replaces arginine with cysteine at codon 34 of the PALB2 protein. Computational prediction tool suggests that this variant may not impact protein structure and function. A functional study reported this variant to have normal homology-directed DNA repair activity in PALB2-deficient B400 mouse mammary tumor cells (PMID: 31636395). This variant has been reported in at least six individuals affected with breast cancer (PMID: 26848151, 30287823, 33471991), and one individual each affected with acute myeloid leukemia, stomach adenocarcinoma, pancreatic cancer and colorectal cancer and/or polyps (PMID: 2598075, 26483394, 26689913). This variant also has been reported in at least three healthy individuals including an individual age 70 years or older without cancer in the FLOSSIES database (PMID: 33471991; https://whi.color.com/variant/16-23649399-G-A). This variant has been identified in 5/282890 chromosomes 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. -

Sep 14, 2021

Sema4, Sema4

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:curation

- -

Jul 02, 2018

Mendelics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Mar 03, 2025

Molecular Diagnostics Laboratory, Catalan Institute of Oncology

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

BP1 c.100C>T, located in exon 2 of the PALB2 gene, is predicted to result in the substitution of Arginine by Cysteine at codon 34, p.(Arg34Cys) (BP1). This variant is found in 61/1613840 alleles at a frequency of 0.003% in the gnomAD v2.1.1 database, non-cancer dataset. The SpliceAI algorithm predicts no significant impact on splicing. To our knowledge, neither relevant clinical data nor well-stablished RNA studies have been reported for this variant. It has been reported in ClinVar (1x B, 12x VUS). Based on the currently available information, c.100C>T is classified as an uncertain significance variant according to ClinGen-PALB2 Guidelines version 1.0. -

Familial cancer of breast

Uncertain:3Benign:1

Jan 29, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This sequence change replaces arginine, which is basic and polar, with cysteine, which is neutral and slightly polar, at codon 34 of the PALB2 protein (p.Arg34Cys). This variant is present in population databases (rs373483056, gnomAD 0.004%). This missense change has been observed in individual(s) with breast cancer, pancreatic cancer, acute myeloid leukemia, stomach adenocarcinoma, and suspected Lynch Syndrome (PMID: 25980754, 26483394, 26689913, 26848151, 30287823, 33128190). ClinVar contains an entry for this variant (Variation ID: 185273). An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant is likely to be disruptive. Experimental studies have shown that this missense change does not substantially affect PALB2 function (PMID: 31636395). 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. -

Apr 13, 2016

Counsyl

Significance:Uncertain significance

Review Status:no assertion criteria provided

Collection Method:clinical testing

This submission and the accompanying classification are no longer maintained by the submitter. For more information on current observations and classification, please contact variantquestions@myriad.com. -

Feb 23, 2024

Myriad Genetics, Inc.

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant is considered benign. This variant is strongly associated with less severe personal and family histories of cancer, typical for individuals without pathogenic variants in this gene [PMID: 25085752]. This variant has been observed in trans with a known pathogenic variant in one or more individuals lacking clinical features consistent with gene-specific recessive disease. -

Nov 13, 2023

Baylor Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

not provided

Uncertain:3

May 11, 2024

Quest Diagnostics Nichols Institute San Juan Capistrano

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The PALB2 c.100C>T (p.Arg34Cys) variant has been reported in the published literature in in individuals with breast cancer (PMID: 26848151 (2016), 28779002 (2017), 29522266 (2018), 30287823 (2018)), 33128190 (2021)), pancreatic cancer (PMID: 26483394 (2015)), suspected Lynch syndrome (PMID: 25980754 (2015)), stomach cancer and acute myeloid leukemia (PMID: 26689913 (2015)). The frequency of this variant in the general population, 0.00008 (2/25124 chromosomes (Genome Aggregation Database, http://gnomad.broadinstitute.org)), is uninformative in the assessment of its pathogenicity. Analysis of this variant using bioinformatics tools for the prediction of the effect of amino acid changes on protein structure and function yielded conflicting predictions that this variant is benign or damaging. Based on the available information, we are unable to determine the clinical significance of this variant. -

Oct 10, 2018

Leiden Open Variation Database

Significance:Uncertain significance

Review Status:no assertion criteria provided

Collection Method:curation

Curators: Marc Tischkowitz, Arleen D. Auerbach. Submitter to LOVD: Yukihide Momozawa. -

Feb 07, 2025

GeneDx

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Observed in individuals with breast, pancreatic, and other cancers (PMID: 26483394, 25980754, 26689913, 28779002, 29522266, 30287823, 33128190); Published functional study demonstrates homology-directed repair activity similar to wild-type (PMID: 31636395); Not observed at significant frequency in large population cohorts (gnomAD); In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; This variant is associated with the following publications: (PMID: 26689913, 26483394, 25980754, 26848151, 29522266, 30287823, 33128190, 33471991, 28779002, 20871615, 19369211, 31636395) -

not specified

Uncertain:1

Mar 19, 2022

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

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Variant summary: PALB2 c.100C>T (p.Arg34Cys) results in a non-conservative amino acid change in the encoded protein sequence. Four of five in-silico tools predict a damaging effect of the variant on protein function. The variant allele was found at a frequency of 1.6e-05 in 251484 control chromosomes. The available data on variant occurrences in the general population are insufficient to allow any conclusion about variant significance. c.100C>T has been reported in the literature as a VUS in settings of multigene cancer panel testing among women with breast/colorectal cancer (example, Yurgelun_2015, Villalona-Calero_2016, Momozawa_2018). These report(s) do not provide unequivocal conclusions about association of the variant with Hereditary Breast And Ovarian Cancer Syndrome. At least one publication reports experimental evidence evaluating an impact on protein function (example, Wiltshire_2019). These results showed no damaging effect of this variant on Homology Directed Repair (HDR) activity. Seven clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar after 2014 without evidence for independent evaluation. All laboratories classified the variant as uncertain significance. Based on the evidence outlined above, the variant was classified as uncertain significance. -

Inherited breast cancer and ovarian cancer

Uncertain:1

Jul 04, 2024

Genomics and Molecular Medicine Service, East Genomic Laboratory Hub, NHS Genomic Medicine Service

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

BP1 -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.59

BayesDel_addAF

Benign

-0.013

BayesDel_noAF

Benign

-0.16

CADD

Pathogenic

(source)

DANN

Pathogenic

1.0

DEOGEN2

Uncertain

0.51

D;T

Eigen

Pathogenic

0.68

Eigen_PC

Uncertain

0.65

FATHMM_MKL

Uncertain

0.85

LIST_S2

Uncertain

0.94

D;D

M_CAP

Benign

0.026

MetaRNN

Benign

0.41

T;T

MetaSVM

Benign

-0.87

MutationAssessor

Uncertain

2.8

M;.

PhyloP100

2.7

PrimateAI

Uncertain

0.56

PROVEAN

Pathogenic

-5.3

D;.

REVEL

Benign

0.19

Sift

Pathogenic

0.0

D;.

Sift4G

Pathogenic

0.0010

D;.

Polyphen

1.0

D;.

Vest4

0.65

MVP

0.88

MPC

0.39

ClinPred

0.98

GERP RS

4.5

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.0

Varity_R

0.46

gMVP

0.082

Mutation Taster

=60/40

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.0

Details are displayed if max score is > 0.2

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

Publications

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over