NM_004656.4:c.240G>A

Variant names:

• chr3-52408489-C-T
• rs755878197
• NM_004656.4:c.240G>A

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 2P and 1B. PM2 BS2_Supporting

The NM_004656.4(BAP1):​c.240G>A​(p.Met80Ile) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000343 in 1,459,538 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★★). Another nucleotide change resulting in the same amino acid substitution has been previously reported as Uncertain significance in ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. M80V) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000034 (0 hom.)
• Consequence: BAP1 NM_004656.4 missense
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:3
• Conservation: PhyloP100: 7.87
• Publications: 0 publications found

Genes affected

BAP1 (HGNC:950): (BRCA1 associated protein 1) This gene belongs to the ubiquitin C-terminal hydrolase subfamily of deubiquitinating enzymes that are involved in the removal of ubiquitin from proteins. The encoded enzyme binds to the breast cancer type 1 susceptibility protein (BRCA1) via the RING finger domain of the latter and acts as a tumor suppressor. In addition, the enzyme may be involved in regulation of transcription, regulation of cell cycle and growth, response to DNA damage and chromatin dynamics. Germline mutations in this gene may be associated with tumor predisposition syndrome (TPDS), which involves increased risk of cancers including malignant mesothelioma, uveal melanoma and cutaneous melanoma. [provided by RefSeq, May 2013]

BAP1 Gene-Disease associations (from GenCC):

• BAP1-related tumor predisposition syndrome

  Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Genomics England PanelApp, ClinGen, G2P, Ambry Genetics, Labcorp Genetics (formerly Invitae), Orphanet
• Kury-Isidor syndrome

  Inheritance: AD Classification: STRONG, MODERATE Submitted by: Ambry Genetics, G2P
• renal cell carcinoma

  Inheritance: AD Classification: STRONG Submitted by: Genomics England PanelApp

ACMG classification

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BS2: High AC in GnomAdExome4 at 5 AD gene. Variant has AC lower than other variant known as pathogenic in the gene, so the strength is limited to Supporting.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_004656.4. 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
	BAP1	NM_004656.4	MANE Select	c.240G>A	p.Met80Ile	missense	Exon 4 of 17	NP_004647.1	Q92560
	BAP1	NM_001410772.1		c.240G>A	p.Met80Ile	missense	Exon 4 of 17	NP_001397701.1	F8W6N3

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	BAP1	ENST00000460680.6	TSL:1 MANE Select	c.240G>A	p.Met80Ile	missense	Exon 4 of 17	ENSP00000417132.1	Q92560
	BAP1	ENST00000470173.1	TSL:3	c.3G>A	p.Met1?	start_lost	Exon 3 of 6	ENSP00000417776.1	C9J7L9
	BAP1	ENST00000296288.9	TSL:5	c.240G>A	p.Met80Ile	missense	Exon 4 of 17	ENSP00000296288.5	F8W6N3

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD2 exomes AF: 0.00000406 AC: 1 AN: 246304 AF XY: 0.00000751

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: 0.00000343 AC: 5 AN: 1459538 Hom.: 0 Cov.: 32 AF XY: 0.00000551 AC XY: 4 AN XY: 725722

African (AFR) AF: 0.00 AC: 0 AN: 33454

American (AMR) AF: 0.00 AC: 0 AN: 44410

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26072

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

South Asian (SAS) AF: 0.0000584 AC: 5 AN: 85568

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53150

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

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1111064

Other (OTH) AF: 0.00 AC: 0 AN: 60366

GnomAD4 genome Cov.: 33

ExAC AF: 0.00000824 AC: 1

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
-	1	-	BAP1-related tumor predisposition syndrome (1)
-	1	-	Hereditary cancer-predisposing syndrome (1)
-	1	-	not specified (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.93
BayesDel_addAF	Uncertain	0.15	D
BayesDel_noAF	Uncertain	0.070
CADD	Uncertain	24
DANN	Benign	0.87
DEOGEN2	Benign	0.030	T
Eigen	Benign	-0.32
Eigen_PC	Benign	0.0049
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Pathogenic	0.99	D
M_CAP	Benign	0.016	T
MetaRNN	Benign	0.30	T
MetaSVM	Benign	-0.95	T
MutationAssessor	Benign	-1.2	N
PhyloP100		7.9
PrimateAI	Pathogenic	0.82	D
PROVEAN	Benign	-0.34	N
REVEL	Benign	0.26
Sift	Benign	0.76	T
Sift4G	Benign	1.0	T
Polyphen		0.033	B
Vest4		0.82
MutPred		0.54		Loss of stability (P = 0.1307)
MVP		0.58
MPC		1.6
ClinPred		0.39	T
GERP RS		5.5
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.27
gMVP		0.69
Mutation Taster		=16/184	disease causing

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.020		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: rs755878197; hg19: chr3-52442505;