13-48303760-G-T

Variant names:

• chr13-48303760-G-T
• rs886050266
• NM_000321.3:c.-153G>T

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_000321.3(RB1):​c.-153G>T variant causes a 5 prime UTR change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: RB1 NM_000321.3 5_prime_UTR
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 3.55
• Publications: 1 publications found

Genes affected

RB1 (HGNC:9884): (RB transcriptional corepressor 1) The protein encoded by this gene is a negative regulator of the cell cycle and was the first tumor suppressor gene found. The encoded protein also stabilizes constitutive heterochromatin to maintain the overall chromatin structure. The active, hypophosphorylated form of the protein binds transcription factor E2F1. Defects in this gene are a cause of childhood cancer retinoblastoma (RB), bladder cancer, and osteogenic sarcoma. [provided by RefSeq, Jul 2008]

RB1-DT (HGNC:42778): (RB1 divergent transcript)

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.3).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
RB1	NM_000321.3	c.-153G>T		5_prime_UTR_variant	Exon 1 of 27	ENST00000267163.6	NP_000312.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
RB1	ENST00000267163.6	c.-153G>T		5_prime_UTR_variant	Exon 1 of 27	1	NM_000321.3	ENSP00000267163.4

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 1057192 Hom.: 0 Cov.: 14 AF XY: 0.00 AC XY: 0 AN XY: 521282

African (AFR) AF: 0.00 AC: 0 AN: 20812

American (AMR) AF: 0.00 AC: 0 AN: 15722

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 18654

East Asian (EAS) AF: 0.00 AC: 0 AN: 26522

South Asian (SAS) AF: 0.00 AC: 0 AN: 60034

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 30806

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 3224

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 836128

Other (OTH) AF: 0.00 AC: 0 AN: 45290

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Retinoblastoma Uncertain:1

Jun 14, 2016

Illumina Laboratory Services, Illumina

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.30
CADD	Benign	20
DANN	Uncertain	0.98
PhyloP100		3.5
PromoterAI		-0.050	Neutral

Splicing

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs886050266; hg19: chr13-48877896;