rs1553630452

chr3-41225695-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 5 ACMG points: 5P and 0B. PM2 PP2 PP3_Moderate

The NM_001904.4(CTNNB1):c.770C>T(p.Thr257Ile) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,834 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as other (no stars).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: CTNNB1 NM_001904.4 missense
• Clinical Significance: other no assertion criteria provided O:1
• Conservation: PhyloP100: 7.91

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 Uncertain_significance. Variant got 5 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant where missense usually causes diseases, CTNNB1
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.865

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
CTNNB1	NM_001904.4	c.770C>T	p.Thr257Ile	missense_variant	6/15	ENST00000349496.11

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
CTNNB1	ENST00000349496.11	c.770C>T	p.Thr257Ile	missense_variant	6/15	1	NM_001904.4	P4

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461834 Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0 AN XY: 727222

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: other

Submissions summary: Other:1

Revision: no assertion criteria provided

Submissions by phenotype

Nephroblastoma Other:1

other, no assertion criteria provided

clinical testing

Donald Williams Parsons Laboratory, Baylor College of Medicine

May 01, 2016

- 2: Mutations in members of targetable cancer pathways, gene families, or functional groups, regardless of tumor type;

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	1.0
BayesDel_addAF	Pathogenic	0.33	D
BayesDel_noAF	Pathogenic	0.24
Cadd	Pathogenic	28
Dann	Uncertain	1.0
DEOGEN2	Uncertain	0.56	D;D;T;D;D;D;D;D;T;D;D;.;T;D;D;D;T;.;T;T;D;D;.;.;.;D;T;.;D;D;T;D;.;D;T;D;D;D;D;D
Eigen	Pathogenic	0.82
Eigen_PC	Pathogenic	0.81
FATHMM_MKL	Pathogenic	0.97	D
M_CAP	Uncertain	0.11	D
MetaRNN	Pathogenic	0.87	D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D
MetaSVM	Uncertain	0.029	D
MutationAssessor	Uncertain	2.1	M;M;.;M;M;M;M;M;.;M;M;.;.;M;M;M;.;.;.;.;M;M;.;.;.;M;.;.;M;M;.;M;.;M;.;M;M;M;M;M
MutationTaster	Benign	1.0	D;D;D;D;D
PrimateAI	Pathogenic	0.92	D
Polyphen		1.0	D;D;.;D;D;D;D;D;.;D;D;.;.;D;D;D;.;.;.;.;D;D;.;.;.;D;.;.;D;D;.;D;.;D;.;D;D;D;D;D
Vest4		0.74, 0.73, 0.74, 0.75
MutPred		0.66		Loss of catalytic residue at T257 (P = 0.0291);Loss of catalytic residue at T257 (P = 0.0291);.;Loss of catalytic residue at T257 (P = 0.0291);Loss of catalytic residue at T257 (P = 0.0291);Loss of catalytic residue at T257 (P = 0.0291);Loss of catalytic residue at T257 (P = 0.0291);Loss of catalytic residue at T257 (P = 0.0291);.;Loss of catalytic residue at T257 (P = 0.0291);Loss of catalytic residue at T257 (P = 0.0291);.;.;Loss of catalytic residue at T257 (P = 0.0291);Loss of catalytic residue at T257 (P = 0.0291);Loss of catalytic residue at T257 (P = 0.0291);.;.;.;.;Loss of catalytic residue at T257 (P = 0.0291);Loss of catalytic residue at T257 (P = 0.0291);.;Loss of catalytic residue at T257 (P = 0.0291);.;Loss of catalytic residue at T257 (P = 0.0291);.;Loss of catalytic residue at T257 (P = 0.0291);Loss of catalytic residue at T257 (P = 0.0291);Loss of catalytic residue at T257 (P = 0.0291);.;Loss of catalytic residue at T257 (P = 0.0291);Loss of catalytic residue at T257 (P = 0.0291);Loss of catalytic residue at T257 (P = 0.0291);.;Loss of catalytic residue at T257 (P = 0.0291);Loss of catalytic residue at T257 (P = 0.0291);Loss of catalytic residue at T257 (P = 0.0291);Loss of catalytic residue at T257 (P = 0.0291);Loss of catalytic residue at T257 (P = 0.0291);
MVP		0.88
MPC		2.3
ClinPred		0.99	D
GERP RS		5.5
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.88
gMVP		0.90

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.030		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: rs1553630452; hg19: chr3-41267186; COSMIC: COSV62692500; COSMIC: COSV62692500;