Genetic Variant PALB2:c.1684+1173T>A (chr16-23633689-A-T) – ACMG Classification: Benign (-12 pts)

Variant summary

Our verdict is Benign. The variant received -12 ACMG points: 0P and 12B. BP4_StrongBA1

The NM_024675.4(PALB2):c.1684+1173T>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0292 in 152,112 control chromosomes in the GnomAD database, including 195 homozygotes. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: 𝑓 0.029 ( 195 hom., cov: 32)

Consequence

PALB2
NM_024675.4 intron

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: -1.21

Publications

1 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: Benign. The variant received -12 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.98).

BA1

GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.0968 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PALB2	NM_024675.4 link	c.1684+1173T>A		intron_variant	Intron 4 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.1684+1173T>A		intron_variant	Intron 4 of 12	1	NM_024675.4	ENSP00000261584.4		Q86YC2

Frequencies

GnomAD3 genomes

AF:

0.0291

AC:

4429

AN:

151994

Hom.:

196

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0994

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0139

Gnomad ASJ

AF:

0.00260

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.0127

Gnomad NFE

AF:

0.000676

Gnomad OTH

AF:

0.0215

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome

AF:

0.0292

AC:

4437

AN:

152112

Hom.:

195

Cov.:

AF XY:

0.0284

AC XY:

2116

AN XY:

74390

show subpopulations

African (AFR)

AF:

0.0993

AC:

4121

AN:

41480

American (AMR)

AF:

0.0139

AC:

212

AN:

15256

Ashkenazi Jewish (ASJ)

AF:

0.00260

AC:

AN:

3468

East Asian (EAS)

AF:

0.00

AC:

AN:

5182

South Asian (SAS)

AF:

0.00

AC:

AN:

4824

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10586

Middle Eastern (MID)

AF:

0.0137

AC:

AN:

292

European-Non Finnish (NFE)

AF:

0.000676

AC:

AN:

68002

Other (OTH)

AF:

0.0213

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.503

Heterozygous variant carriers

198

397

595

794

992

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

138

184

230

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.0241

Hom.:

Bravo

AF:

0.0344

Asia WGS

AF:

0.0100

AC:

AN:

3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.98

CADD

Benign

0.14

(source)

DANN

Benign

0.27

PhyloP100

-1.2

Mutation Taster

=100/0

polymorphism (auto)

(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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over