rs1880481

chr3-41230590-C-A

Variant summary

Our verdict is Benign. Variant got -12 ACMG points: 0P and 12B. BP4_Strong BA1

The NM_001904.4(CTNNB1):c.1082-2751C>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.4 in 151,944 control chromosomes in the GnomAD database, including 12,526 homozygotes. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 0.40 (12526 hom., cov: 32)
• Consequence: CTNNB1 NM_001904.4 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.465

Genes affected

CTNNB1 (HGNC:2514): (catenin beta 1) The protein encoded by this gene is part of a complex of proteins that constitute adherens junctions (AJs). AJs are necessary for the creation and maintenance of epithelial cell layers by regulating cell growth and adhesion between cells. The encoded protein also anchors the actin cytoskeleton and may be responsible for transmitting the contact inhibition signal that causes cells to stop dividing once the epithelial sheet is complete. Finally, this protein binds to the product of the APC gene, which is mutated in adenomatous polyposis of the colon. Mutations in this gene are a cause of colorectal cancer (CRC), pilomatrixoma (PTR), medulloblastoma (MDB), and ovarian cancer. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Aug 2016]

ACMG classification

Verdict is Benign. Variant got -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.99).
• BA1: GnomAd4 highest subpopulation (NFE) allele frequency at 95% confidence interval = 0.451 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
CTNNB1	NM_001904.4	c.1082-2751C>A		intron_variant		ENST00000349496.11

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
CTNNB1	ENST00000349496.11	c.1082-2751C>A		intron_variant		1	NM_001904.4	P4

Frequencies

GnomAD3 genomes AF: 0.400 AC: 60798 AN: 151826 Hom.: 12524 Cov.: 32

Gnomad AFR AF: 0.326

Gnomad AMI AF: 0.435

Gnomad AMR AF: 0.367

Gnomad ASJ AF: 0.381

Gnomad EAS AF: 0.248

Gnomad SAS AF: 0.406

Gnomad FIN AF: 0.462

Gnomad MID AF: 0.367

Gnomad NFE AF: 0.456

Gnomad OTH AF: 0.395

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.400 AC: 60826 AN: 151944 Hom.: 12526 Cov.: 32 AF XY: 0.397 AC XY: 29478 AN XY: 74262

Gnomad4 AFR AF: 0.326

Gnomad4 AMR AF: 0.366

Gnomad4 ASJ AF: 0.381

Gnomad4 EAS AF: 0.249

Gnomad4 SAS AF: 0.405

Gnomad4 FIN AF: 0.462

Gnomad4 NFE AF: 0.456

Gnomad4 OTH AF: 0.392

Alfa AF: 0.437 Hom.: 6962

Bravo AF: 0.390

Asia WGS AF: 0.365 AC: 1274 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.99
Cadd	Benign	0.26
Dann	Benign	0.32

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: rs1880481; hg19: chr3-41272081;