NM_024675.4:c.793A>T

Variant names:

• chr16-23635753-T-A
• rs1555461620
• NM_024675.4:c.793A>T

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_024675.4(PALB2):​c.793A>T​(p.Ile265Phe) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 16/22 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. I265V) 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: -0.499
• Publications: 1 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: Ambry Genetics
• PALB2-related cancer predisposition

  Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
• Fanconi anemia complementation group N

  Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae), ClinGen, G2P
• pancreatic cancer, susceptibility to, 3

  Inheritance: AD Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae), Genomics England PanelApp
• Fanconi anemia

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.08253467).

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

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PALB2	NM_024675.4	MANE Select	c.793A>T	p.Ile265Phe	missense	Exon 4 of 13	NP_078951.2
	PALB2	NM_001407296.1		c.733A>T	p.Ile245Phe	missense	Exon 3 of 12	NP_001394225.1
	PALB2	NM_001407297.1		c.793A>T	p.Ile265Phe	missense	Exon 4 of 12	NP_001394226.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PALB2	ENST00000261584.9	TSL:1 MANE Select	c.793A>T	p.Ile265Phe	missense	Exon 4 of 13	ENSP00000261584.4	Q86YC2
	PALB2	ENST00000568219.5	TSL:1	c.-93A>T		5_prime_UTR	Exon 4 of 13	ENSP00000454703.2	H3BN63
	PALB2	ENST00000561514.3	TSL:5	c.799A>T	p.Ile267Phe	missense	Exon 4 of 13	ENSP00000460666.3	A0AA52I2C1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

ClinVar

ClinVar submissions

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	0.087
BayesDel_addAF	Benign	-0.29	T
BayesDel_noAF	Benign	-0.66
CADD	Benign	2.0
DANN	Benign	0.78
DEOGEN2	Benign	0.12	T
Eigen	Benign	-0.79
Eigen_PC	Benign	-0.87
FATHMM_MKL	Benign	0.041	N
LIST_S2	Benign	0.68	T
M_CAP	Benign	0.032	D
MetaRNN	Benign	0.083	T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	0.69	N
PhyloP100		-0.50
PrimateAI	Benign	0.21	T
PROVEAN	Benign	-1.1	N
REVEL	Benign	0.027
Sift	Benign	0.064	T
Sift4G	Benign	0.13	T
Polyphen		0.46	P
Vest4		0.17
MutPred		0.12		Gain of catalytic residue at I265 (P = 0.039)
MVP		0.25
MPC		0.14
ClinPred		0.13	T
GERP RS		-0.69
Varity_R		0.055
gMVP		0.051

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: rs1555461620; hg19: chr16-23647074;