chr16-23636367-T-G

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 0P and 2B. BP4BP7

This summary comes from the ClinGen Evidence Repository: The c.212-33A>C variant in PALB2 is an intronic variant. BP7 applies because the threshold for the application of BP7 to deep intronic acceptor site variants is beyond position -21. The computational splicing predictor SpliceAI gives a score of 0.0 for acceptor loss suggesting that the variant has no impact on splicing. The highest population minor allele frequency in gnomAD v2.1.1 is 0.00006485 in the non-Finnish European population. (PM2_Supporting, BS1, and BA1 are not met). In summary, this variant meets the criteria to be classified as likely benign for autosomal dominant hereditary breast and pancreatic cancer and autosomal recessive FANCN based on the ACMG/AMP criteria applied, as specified by the HBOP VCEP. (BP4, BP7) LINK:https://erepo.genome.network/evrepo/ui/classification/CA269519/MONDO:0016419/077

Frequency

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

Exomes 𝑓: 0.0000032 ( 0 hom. )

Consequence

PALB2
NM_024675.4 intron

Scores

Clinical Significance

Likely benign reviewed by expert panel B:2

Conservation

PhyloP100: 0.953

Publications

0 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 -2 ACMG points.

BP4

For more information check the summary or visit ClinGen Evidence Repository.

BP7

For more information check the summary or visit ClinGen Evidence Repository.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PALB2	NM_024675.4 link	c.212-33A>C		intron_variant	Intron 3 of 12	ENST00000261584.9	NP_078951.2	Q86YC2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PALB2	ENST00000261584.9 link	c.212-33A>C		intron_variant	Intron 3 of 12	1	NM_024675.4	ENSP00000261584.4		Q86YC2

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152128

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

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:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.00000316

AC:

AN:

1265408

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

628074

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

27642

American (AMR)

AF:

0.00

AC:

AN:

27660

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

23102

East Asian (EAS)

AF:

0.00

AC:

AN:

34532

South Asian (SAS)

AF:

0.00

AC:

AN:

66342

European-Finnish (FIN)

AF:

0.00

AC:

AN:

45390

Middle Eastern (MID)

AF:

0.00

AC:

AN:

3888

European-Non Finnish (NFE)

AF:

0.00000406

AC:

AN:

984156

Other (OTH)

AF:

0.00

AC:

AN:

52696

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.525

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:

0.00000657

AC:

AN:

152128

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74320

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41440

American (AMR)

AF:

0.00

AC:

AN:

15268

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5190

South Asian (SAS)

AF:

0.00

AC:

AN:

4832

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10574

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.0000147

AC:

AN:

68034

Other (OTH)

AF:

0.00

AC:

AN:

2092

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.575

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.0000712

Hom.:

Bravo

AF:

0.0000113

ClinVar

Significance: Likely benign

Submissions summary: Benign:2

Revision: reviewed by expert panel

LINK: link

Submissions by phenotype

Familial cancer of breast

Benign:2

Jun 15, 2023

ClinGen Hereditary Breast, Ovarian and Pancreatic Cancer Variant Curation Expert Panel, ClinGen

Significance:Likely benign

Review Status:reviewed by expert panel

Collection Method:curation

The c.212-33A>C variant in PALB2 is an intronic variant. BP7 applies because the threshold for the application of BP7 to deep intronic acceptor site variants is beyond position -21. The computational splicing predictor SpliceAI gives a score of 0.0 for acceptor loss suggesting that the variant has no impact on splicing. The highest population minor allele frequency in gnomAD v2.1.1 is 0.00006485 in the non-Finnish European population. (PM2_Supporting, BS1, and BA1 are not met). In summary, this variant meets the criteria to be classified as likely benign for autosomal dominant hereditary breast and pancreatic cancer and autosomal recessive FANCN based on the ACMG/AMP criteria applied, as specified by the HBOP VCEP. (BP4, BP7) -

May 13, 2019

Leiden Open Variation Database

Significance:Benign

Review Status:no assertion criteria provided

Collection Method:curation

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

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.87

CADD

Benign

5.9

(source)

DANN

Benign

0.45

PhyloP100

0.95

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

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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