rs377149139

Variant names:

• chr16-23635551-A-G
• rs377149139
• NM_024675.4:c.995T>C

Your query was ambiguous. Multiple possible variants found:

• chr16-23635551-A-G
• chr16-23635551-A-T
• chr16-23635551-A-C

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 4P and 2B. PM1 PM2 BP4_Moderate

The NM_024675.4(PALB2):​c.995T>C​(p.Leu332Pro) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000342 in 1,460,760 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/22 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. L332H) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000034 (0 hom.)
• Consequence: PALB2 NM_024675.4 missense
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:4
• Conservation: PhyloP100: 0.703
• Publications: 5 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 2 ACMG points.

• PM1: In a hotspot region, there are 2 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 10 benign, 29 uncertain in NM_024675.4
• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.26376128).

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.995T>C	p.Leu332Pro	missense	Exon 4 of 13	NP_078951.2
	PALB2	NM_001407296.1		c.935T>C	p.Leu312Pro	missense	Exon 3 of 12	NP_001394225.1
	PALB2	NM_001407297.1		c.995T>C	p.Leu332Pro	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.995T>C	p.Leu332Pro	missense	Exon 4 of 13	ENSP00000261584.4	Q86YC2
	PALB2	ENST00000568219.5	TSL:1	c.110T>C	p.Leu37Pro	missense	Exon 4 of 13	ENSP00000454703.2	H3BN63
	PALB2	ENST00000561514.3	TSL:5	c.1001T>C	p.Leu334Pro	missense	Exon 4 of 13	ENSP00000460666.3	A0AA52I2C1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD2 exomes AF: 0.0000199 AC: 5 AN: 250756 AF XY: 0.0000221

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.000116

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00000881

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000342 AC: 5 AN: 1460760 Hom.: 0 Cov.: 32 AF XY: 0.00000275 AC XY: 2 AN XY: 726664

African (AFR) AF: 0.00 AC: 0 AN: 33322

American (AMR) AF: 0.0000898 AC: 4 AN: 44532

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26120

East Asian (EAS) AF: 0.00 AC: 0 AN: 39684

South Asian (SAS) AF: 0.00 AC: 0 AN: 86166

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53378

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5766

European-Non Finnish (NFE) AF: 9.00e-7 AC: 1 AN: 1111466

Other (OTH) AF: 0.00 AC: 0 AN: 60326

GnomAD4 genome Cov.: 32

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.00000756

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 provided (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.13
BayesDel_addAF	Benign	-0.27	T
BayesDel_noAF	Benign	-0.40
CADD	Benign	18
DANN	Uncertain	1.0
DEOGEN2	Benign	0.11	T
Eigen	Benign	-0.094
Eigen_PC	Benign	-0.30
FATHMM_MKL	Benign	0.080	N
LIST_S2	Benign	0.69	T
M_CAP	Benign	0.035	D
MetaRNN	Benign	0.26	T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	1.5	L
PhyloP100		0.70
PrimateAI	Benign	0.36	T
PROVEAN	Uncertain	-3.0	D
REVEL	Benign	0.12
Sift	Uncertain	0.0070	D
Sift4G	Benign	0.14	T
Polyphen		1.0	D
Vest4		0.50
MutPred		0.41		Loss of stability (P = 0.0233)
MVP		0.50
MPC		0.40
ClinPred		0.41	T
GERP RS		3.3
Varity_R		0.39
gMVP		0.52

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: rs377149139; hg19: chr16-23646872; COSMIC: COSV99849167; COSMIC: COSV99849167;