20-37022736-C-A

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_002895.5(RBL1):​c.2473G>T​(p.Glu825*) variant causes a stop gained change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Variant results in nonsense mediated mRNA decay.

Frequency

Genomes: not found (cov: 32)

Consequence

RBL1
NM_002895.5 stop_gained

Scores

5
1
1

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 7.75
Variant links:
Genes affected
RBL1 (HGNC:9893): (RB transcriptional corepressor like 1) The protein encoded by this gene is similar in sequence and possibly function to the product of the retinoblastoma 1 (RB1) gene. The RB1 gene product is a tumor suppressor protein that appears to be involved in cell cycle regulation, as it is phosphorylated in the S to M phase transition and is dephosphorylated in the G1 phase of the cell cycle. Both the RB1 protein and the product of this gene can form a complex with adenovirus E1A protein and SV40 large T-antigen, with the SV40 large T-antigen binding only to the unphosphorylated form of each protein. In addition, both proteins can inhibit the transcription of cell cycle genes containing E2F binding sites in their promoters. Due to the sequence and biochemical similarities with the RB1 protein, it is thought that the protein encoded by this gene may also be a tumor suppressor. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2
Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
RBL1NM_002895.5 linkc.2473G>T p.Glu825* stop_gained Exon 17 of 22 ENST00000373664.8 NP_002886.2 P28749-1

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
RBL1ENST00000373664.8 linkc.2473G>T p.Glu825* stop_gained Exon 17 of 22 1 NM_002895.5 ENSP00000362768.3 P28749-1
RBL1ENST00000344359.7 linkc.2473G>T p.Glu825* stop_gained Exon 17 of 21 1 ENSP00000343646.3 P28749-2

Frequencies

GnomAD3 genomes
Cov.:
32
GnomAD4 exome
Cov.:
30
GnomAD4 genome
Cov.:
32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_addAF
Pathogenic
0.62
D
BayesDel_noAF
Pathogenic
0.66
CADD
Pathogenic
41
DANN
Uncertain
1.0
Eigen
Pathogenic
1.1
Eigen_PC
Pathogenic
0.97
FATHMM_MKL
Pathogenic
0.99
D
Vest4
0.97
GERP RS
5.4

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: rs77376862; hg19: chr20-35651139; API