NM_001904.4:c.-48-279C>T

Variant names:

• chr3-41223742-C-T
• rs116306022
• NM_001904.4:c.-48-279C>T

Variant summary

Our verdict is Benign. The variant received -14 ACMG points: 0P and 14B. BP4_Strong BP6_Moderate BS1 BS2

The NM_001904.4(CTNNB1):​c.-48-279C>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00308 in 152,192 control chromosomes in the GnomAD database, including 2 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★).

• Frequency: Genomes: 𝑓 0.0031 (2 hom., cov: 32)
• Consequence: CTNNB1 NM_001904.4 intron
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: -0.450
• Publications: 0 publications found

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]

CTNNB1 Gene-Disease associations (from GenCC):

• exudative vitreoretinopathy

  Inheritance: AD Classification: DEFINITIVE, SUPPORTIVE Submitted by: Orphanet, G2P
• severe intellectual disability-progressive spastic diplegia syndrome

  Inheritance: AD, Unknown Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: ClinGen, Orphanet, Labcorp Genetics (formerly Invitae), Illumina, G2P, Ambry Genetics
• exudative vitreoretinopathy 7

  Inheritance: AD Classification: STRONG, MODERATE Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae)

ACMG classification

Our verdict: Benign. The variant received -14 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.86).
• BP6: Variant 3-41223742-C-T is Benign according to our data. Variant chr3-41223742-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 1208631.Status of the report is criteria_provided_single_submitter, 1 stars.
• BS1: Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.00308 (468/152192) while in subpopulation AFR AF = 0.0107 (446/41546). AF 95% confidence interval is 0.00991. There are 2 homozygotes in GnomAd4. There are 204 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.
• BS2: High AC in GnomAd4 at 468 AD,Unknown gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CTNNB1	NM_001904.4	c.-48-279C>T		intron_variant	Intron 1 of 14	ENST00000349496.11	NP_001895.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CTNNB1	ENST00000349496.11	c.-48-279C>T		intron_variant	Intron 1 of 14	1	NM_001904.4	ENSP00000344456.5
CTNNB1	ENST00000645982.1	c.-48-279C>T		intron_variant	Intron 1 of 15			ENSP00000494845.1
CTNNB1	ENST00000715152.1	n.-48-279C>T		intron_variant	Intron 1 of 15			ENSP00000520353.1

Frequencies

GnomAD3 genomes AF: 0.00307 AC: 467 AN: 152074 Hom.: 2 Cov.: 32

Gnomad AFR AF: 0.0107

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000786

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000588

Gnomad OTH AF: 0.00287

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

GnomAD4 genome AF: 0.00308 AC: 468 AN: 152192 Hom.: 2 Cov.: 32 AF XY: 0.00274 AC XY: 204 AN XY: 74410

African (AFR) AF: 0.0107 AC: 446 AN: 41546

American (AMR) AF: 0.000785 AC: 12 AN: 15282

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

East Asian (EAS) AF: 0.00 AC: 0 AN: 5178

South Asian (SAS) AF: 0.00 AC: 0 AN: 4822

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10576

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 294

European-Non Finnish (NFE) AF: 0.0000588 AC: 4 AN: 67998

Other (OTH) AF: 0.00284 AC: 6 AN: 2112

Alfa AF: 0.00173 Hom.: 1

Bravo AF: 0.00358

Asia WGS AF: 0.00116 AC: 4 AN: 3472

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Benign:1

Jul 26, 2018

GeneDx

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.86
CADD	Benign	2.5
DANN	Benign	0.45
PhyloP100		-0.45

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

Other links and lift over

dbSNP: rs116306022; hg19: chr3-41265233;