rs1208026193

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2PP2PP3

The NM_004656.4(BAP1):​c.40C>T​(p.Leu14Phe) variant causes a missense, splice region change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,636 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. 1/1 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)
Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

BAP1
NM_004656.4 missense, splice_region

Scores

8
5
6

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 9.33
Variant links:
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]

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 4 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
PP2
Missense variant in the BAP1 gene, where missense mutations are typically associated with disease (based on misZ statistic). The gene has 14 curated pathogenic missense variants (we use a threshold of 10). The gene has 16 curated benign missense variants. Gene score misZ: 2.6442 (below the threshold of 3.09). Trascript score misZ: 3.2667 (above the threshold of 3.09). GenCC associations: The gene is linked to BAP1-related tumor predisposition syndrome, Kury-Isidor syndrome, renal cell carcinoma.
PP3
MetaRNN computational evidence supports a deleterious effect, 0.814

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
BAP1NM_004656.4 linkc.40C>T p.Leu14Phe missense_variant, splice_region_variant Exon 2 of 17 ENST00000460680.6 NP_004647.1 Q92560A0A024R305

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
BAP1ENST00000460680.6 linkc.40C>T p.Leu14Phe missense_variant, splice_region_variant Exon 2 of 17 1 NM_004656.4 ENSP00000417132.1 Q92560

Frequencies

GnomAD3 genomes
Cov.:
32
GnomAD4 exome
AF:
6.84e-7
AC:
1
AN:
1461636
Hom.:
0
Cov.:
32
AF XY:
0.00
AC XY:
0
AN XY:
727100
show subpopulations
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:
8.99e-7
Gnomad4 OTH exome
AF:
0.00
GnomAD4 genome
Cov.:
32

ClinVar

Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

BAP1-related tumor predisposition syndrome Uncertain:1
Oct 30, 2019
Labcorp Genetics (formerly Invitae), Labcorp
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing

This sequence change replaces leucine with phenylalanine at codon 14 of the BAP1 protein (p.Leu14Phe). The leucine residue is highly conserved and there is a small physicochemical difference between leucine and phenylalanine. This variant is not present in population databases (ExAC no frequency). This variant has not been reported in the literature in individuals with BAP1-related disease. Algorithms developed to predict the effect of missense changes on protein structure and function do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Benign"; Align-GVGD: "Class C0"). 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
Pathogenic
1.0
BayesDel_addAF
Pathogenic
0.28
D
BayesDel_noAF
Pathogenic
0.16
CADD
Pathogenic
32
DANN
Uncertain
1.0
DEOGEN2
Benign
0.28
T;.
Eigen
Pathogenic
0.76
Eigen_PC
Pathogenic
0.73
FATHMM_MKL
Pathogenic
0.99
D
LIST_S2
Benign
0.80
T;T
M_CAP
Benign
0.036
D
MetaRNN
Pathogenic
0.81
D;D
MetaSVM
Benign
-0.45
T
MutationAssessor
Benign
1.3
L;.
PrimateAI
Pathogenic
0.81
D
PROVEAN
Uncertain
-3.4
D;D
REVEL
Uncertain
0.46
Sift
Uncertain
0.0020
D;D
Sift4G
Uncertain
0.0070
D;D
Polyphen
1.0
D;.
Vest4
0.71
MutPred
0.75
Loss of stability (P = 0.1526);Loss of stability (P = 0.1526);
MVP
0.73
MPC
1.9
ClinPred
1.0
D
GERP RS
4.5
RBP_binding_hub_radar
0.92
RBP_regulation_power_radar
2.6
Varity_R
0.88
gMVP
0.85

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

Below is the list of publications found by LitVar. It may be empty.

Other links and lift over

dbSNP: rs1208026193; hg19: chr3-52443757; COSMIC: COSV56232785; COSMIC: COSV56232785; API