rs1553645470

Positions:

• chr3-52405821-G-C
• chr3-52405821-G-T

Variant summary

Our verdict is Likely benign. Variant got -5 ACMG points: 1P and 6B. PP2 BP4_Moderate BS2

The NM_004656.4(BAP1):​c.875C>G​(p.Ser292Cys) variant causes a missense change. The variant allele was found at a frequency of 0.000026 in 1,461,694 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.000026 (0 hom.)
• Consequence: BAP1 NM_004656.4 missense
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:3
• Conservation: PhyloP100: 4.84

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]

ACMG classification

Verdict is Likely_benign. Variant got -5 ACMG points.

• PP2: Missense variant in gene, where missense usually causes diseases (based on misZ statistic), BAP1. . Gene score misZ 2.6442 (greater than the threshold 3.09). Trascript score misZ 3.2667 (greater than threshold 3.09). GenCC has associacion of gene with BAP1-related tumor predisposition syndrome, Kury-Isidor syndrome, renal cell carcinoma.
• BP4: Computational evidence support a benign effect (MetaRNN=0.22586808).
• BS2: High AC in GnomAdExome4 at 38 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
BAP1	NM_004656.4	c.875C>G	p.Ser292Cys	missense_variant	10/17	ENST00000460680.6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
BAP1	ENST00000460680.6	c.875C>G	p.Ser292Cys	missense_variant	10/17	1	NM_004656.4	P1
BAP1	ENST00000296288.9	c.821C>G	p.Ser274Cys	missense_variant	10/17	5
BAP1	ENST00000471532.5	n.1042C>G		non_coding_transcript_exon_variant	5/5	5

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 0.0000260 AC: 38 AN: 1461694 Hom.: 0 Cov.: 32 AF XY: 0.0000289 AC XY: 21 AN XY: 727140

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.0000333

Gnomad4 OTH exome AF: 0.0000166

GnomAD4 genome Cov.: 33

Bravo AF: 0.0000113

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:3

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

Hereditary cancer-predisposing syndrome Uncertain:2

Uncertain significance, criteria provided, single submitter	clinical testing	Ambry Genetics	Dec 27, 2022	The p.S292C variant (also known as c.875C>G), located in coding exon 10 of the BAP1 gene, results from a C to G substitution at nucleotide position 875. The serine at codon 292 is replaced by cysteine, an amino acid with dissimilar properties. In one study, this variant was identified in 1/1977 melanoma cases and 0/754 controls (O'Shea SJ et al. Hum. Mol. Genet., 2017 02;26:717-728). This amino acid position is well conserved through mammals but not in all available vertebrate species. In addition, this alteration is predicted to be tolerated by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -
Uncertain significance, criteria provided, single submitter	clinical testing	Color Diagnostics, LLC DBA Color Health	Jun 06, 2022	This missense variant replaces serine with cysteine at codon 292 of the BAP1 protein. Computational prediction suggests that this variant may not impact protein structure and function (internally defined REVEL score threshold <= 0.5, PMID: 27666373). To our knowledge, functional studies have not been reported for this variant. This variant has been reported in an individual affected with melanoma (PMID: 28062663). This variant has not been identified in the general population by the Genome Aggregation Database (gnomAD). The available evidence is insufficient to determine the role of this variant in disease conclusively. Therefore, this variant is classified as a Variant of Uncertain Significance. -

BAP1-related tumor predisposition syndrome Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Invitae

Sep 05, 2023

This sequence change replaces serine, which is neutral and polar, with cysteine, which is neutral and slightly polar, at codon 292 of the BAP1 protein (p.Ser292Cys). This variant is not present in population databases (gnomAD no frequency). This missense change has been observed in individual(s) with melanoma (PMID: 28062663). ClinVar contains an entry for this variant (Variation ID: 485259). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is not expected to disrupt BAP1 protein function. Experimental studies have shown that this missense change does not substantially affect BAP1 function (PMID: 28062663). In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.089
BayesDel_addAF	Benign	-0.11	T
BayesDel_noAF	Benign	-0.40
CADD	Uncertain	24
DANN	Uncertain	0.98
DEOGEN2	Benign	0.033	T;.
Eigen	Benign	0.13
Eigen_PC	Uncertain	0.29
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Benign	0.75	T;T
M_CAP	Benign	0.018	T
MetaRNN	Benign	0.23	T;T
MetaSVM	Benign	-0.89	T
MutationAssessor	Benign	0.69	N;.
MutationTaster	Benign	0.93	D;D
PrimateAI	Benign	0.43	T
PROVEAN	Benign	-1.5	N;N
REVEL	Benign	0.070
Sift	Uncertain	0.0050	D;D
Sift4G	Benign	0.076	T;T
Polyphen		0.29	B;.
Vest4		0.15
MVP		0.75
MPC		0.57
ClinPred		0.62	D
GERP RS		5.4
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.11
gMVP		0.35

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

Publications

LitVar

Other links and lift over

dbSNP: rs1553645470; hg19: chr3-52439837;