rs756856792

Variant names:

• chr16-23637929-A-C
• rs756856792
• ENST00000568219.5:c.-754T>G

Your query was ambiguous. Multiple possible variants found:

• chr16-23637929-A-C
• chr16-23637929-A-T

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_001407304.1(PALB2):​c.-754T>G 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 0.00000205 in 1,461,806 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 Uncertain significance (★★). The gene PALB2 is included in the ClinGen Criteria Specification Registry.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000021 (0 hom.)
• Consequence: PALB2 NM_001407304.1 5_prime_UTR_premature_start_codon_gain
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:4
• Conservation: PhyloP100: 0.208
• Publications: 4 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

Specifications for PALB2 are available in the ClinGen Criteria Specification Registry and recommended for reference when assigning criteria.

Our verdict: Likely_benign. The variant received -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.067046344).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001407304.1. 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.132T>G	p.Ile44Met	missense	Exon 3 of 13	NP_078951.2
	PALB2	NM_001407304.1		c.-754T>G		5_prime_UTR_premature_start_codon_gain	Exon 3 of 13	NP_001394233.1	H3BN63
	PALB2	NM_001407305.1		c.-754T>G		5_prime_UTR_premature_start_codon_gain	Exon 4 of 14	NP_001394234.1	H3BN63

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PALB2	ENST00000568219.5	TSL:1	c.-754T>G		5_prime_UTR_premature_start_codon_gain	Exon 3 of 13	ENSP00000454703.2	H3BN63
	PALB2	ENST00000261584.9	TSL:1 MANE Select	c.132T>G	p.Ile44Met	missense	Exon 3 of 13	ENSP00000261584.4	Q86YC2
	PALB2	ENST00000568219.5	TSL:1	c.-754T>G		5_prime_UTR	Exon 3 of 13	ENSP00000454703.2	H3BN63

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD2 exomes AF: 0.00000398 AC: 1 AN: 251474 AF XY: 0.00

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: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000205 AC: 3 AN: 1461806 Hom.: 0 Cov.: 31 AF XY: 0.00000275 AC XY: 2 AN XY: 727198

African (AFR) AF: 0.00 AC: 0 AN: 33478

American (AMR) AF: 0.00 AC: 0 AN: 44722

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26132

East Asian (EAS) AF: 0.00 AC: 0 AN: 39686

South Asian (SAS) AF: 0.0000232 AC: 2 AN: 86254

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53410

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 8.99e-7 AC: 1 AN: 1111962

Other (OTH) AF: 0.00 AC: 0 AN: 60394

GnomAD4 genome Cov.: 32

ExAC AF: 0.00000824 AC: 1

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
-	2	-	Hereditary cancer-predisposing syndrome (2)
-	1	-	Familial cancer of breast (1)
-	1	-	not specified (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.085
BayesDel_addAF	Benign	-0.23	T
BayesDel_noAF	Benign	-0.48
CADD	Benign	12
DANN	Benign	0.90
DEOGEN2	Benign	0.15	T
Eigen	Benign	-0.83
Eigen_PC	Benign	-0.91
FATHMM_MKL	Benign	0.15	N
LIST_S2	Benign	0.74	T
M_CAP	Benign	0.033	D
MetaRNN	Benign	0.067	T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	0.90	L
PhyloP100		0.21
PrimateAI	Benign	0.34	T
PROVEAN	Benign	-1.2	N
REVEL	Benign	0.094
Sift	Uncertain	0.016	D
Sift4G	Uncertain	0.056	T
Polyphen		0.83	P
Vest4		0.25
MutPred		0.15		Loss of methylation at K43 (P = 0.0302)
MVP		0.41
MPC		0.16
ClinPred		0.13	T
GERP RS		0.17
Varity_R		0.12
gMVP		0.027

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: rs756856792; hg19: chr16-23649250;