16-23623067-T-C

Variant names:

• chr16-23623067-T-C
• rs1555459563
• NM_024675.4:c.2898A>G

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_024675.4(PALB2):​c.2898A>G​(p.Ile966Met) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. 13/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. I966T) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 32)
• Consequence: PALB2 NM_024675.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: -0.0690
• Publications: 0 publications found

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-AS1 (HGNC:58305):

ACMG classification

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_024675.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PALB2	NM_024675.4	MANE Select	c.2898A>G	p.Ile966Met	missense	Exon 9 of 13	NP_078951.2
	PALB2	NM_001407296.1		c.2838A>G	p.Ile946Met	missense	Exon 8 of 12	NP_001394225.1
	PALB2	NM_001407297.1		c.2826A>G	p.Ile942Met	missense	Exon 8 of 12	NP_001394226.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PALB2	ENST00000261584.9	TSL:1 MANE Select	c.2898A>G	p.Ile966Met	missense	Exon 9 of 13	ENSP00000261584.4
	PALB2	ENST00000568219.5	TSL:1	c.2013A>G	p.Ile671Met	missense	Exon 9 of 13	ENSP00000454703.2
	PALB2	ENST00000561514.3	TSL:5	c.2904A>G	p.Ile968Met	missense	Exon 9 of 13	ENSP00000460666.3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

ClinVar

ClinVar submissions as Germline

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	Hereditary cancer-predisposing syndrome (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.17
BayesDel_addAF	Benign	-0.043	T
BayesDel_noAF	Benign	-0.30
CADD	Benign	21
DANN	Uncertain	1.0
DEOGEN2	Benign	0.091	T
Eigen	Benign	-0.013
Eigen_PC	Benign	-0.13
FATHMM_MKL	Benign	0.61	D
LIST_S2	Uncertain	0.88	D
M_CAP	Benign	0.034	D
MetaRNN	Uncertain	0.63	D
MetaSVM	Benign	-0.75	T
MutationAssessor	Uncertain	2.6	M
PhyloP100		-0.069
PrimateAI	Benign	0.41	T
PROVEAN	Benign	-2.0	N
REVEL	Benign	0.28
Sift	Uncertain	0.0050	D
Sift4G	Uncertain	0.013	D
Polyphen		1.0	D
Vest4		0.68
MutPred		0.40		Gain of disorder (P = 0.0251)
MVP		0.47
MPC		0.35
ClinPred		0.96	D
GERP RS		-3.2
Varity_R		0.52
gMVP		0.37

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

Other links and lift over

dbSNP: rs1555459563; hg19: chr16-23634388;