rs121913412

Positions:

• chr3-41224633-A-C
• chr3-41224633-A-G
• chr3-41224633-A-T

Variant summary

Our verdict is Likely pathogenic. Variant got 6 ACMG points: 6P and 0B. PM1 PM2 PP2 PP3

The NM_001904.4(CTNNB1):​c.121A>C​(p.Thr41Pro) variant causes a missense 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.

• Frequency: Genomes: not found (cov: 32)
• Consequence: CTNNB1 NM_001904.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 9.32

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 Likely_pathogenic. Variant got 6 ACMG points.

• PM1: In a modified_residue Phosphothreonine; by GSK3-beta (size 0) in uniprot entity CTNB1_HUMAN
• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant in gene, where missense usually causes diseases (based on misZ statistic), CTNNB1. . Gene score misZ 3.846 (greater than the threshold 3.09). Trascript score misZ 5.712 (greater than threshold 3.09). GenCC has associacion of gene with severe intellectual disability-progressive spastic diplegia syndrome, exudative vitreoretinopathy, exudative vitreoretinopathy 7.
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.757

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
CTNNB1	NM_001904.4	c.121A>C	p.Thr41Pro	missense_variant	3/15	ENST00000349496.11	NP_001895.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
CTNNB1	ENST00000349496.11	c.121A>C	p.Thr41Pro	missense_variant	3/15	1	NM_001904.4	ENSP00000344456	P4

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.88
BayesDel_addAF	Pathogenic	0.29	D
BayesDel_noAF	Pathogenic	0.18
CADD	Pathogenic	29
DANN	Uncertain	1.0
DEOGEN2	Pathogenic	0.91	D;T;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	0.89
Eigen_PC	Pathogenic	0.87
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Uncertain	0.96	.;D;.;.;.;.;.;.;.;.;.;.;T;.;.;.;.;.;D;.;.;.;.;T;D;D;.;.;D;.;.;.;.;D;.;D;.;.;.;.;D
M_CAP	Uncertain	0.091	D
MetaRNN	Pathogenic	0.76	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;D
MetaSVM	Benign	-0.40	T
MutationAssessor	Uncertain	2.7	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	0.81	D
PROVEAN	Pathogenic	-6.0	.;D;.;.;D;.;.;.;D;.;D;D;.;.;D;.;.;D;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.;D;.;.;D
REVEL	Uncertain	0.47
Sift	Pathogenic	0.0	.;D;.;.;D;.;.;.;D;.;D;D;.;.;D;.;.;D;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.;D;.;.;D
Sift4G	Pathogenic	0.0	.;D;.;.;D;.;.;.;D;.;D;D;.;.;D;.;.;D;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.;D;.;.;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		0.58, 0.60, 0.59, 0.60, 0.58
MutPred		0.29		Gain of relative solvent accessibility (P = 0.0082);.;Gain of relative solvent accessibility (P = 0.0082);.;Gain of relative solvent accessibility (P = 0.0082);Gain of relative solvent accessibility (P = 0.0082);Gain of relative solvent accessibility (P = 0.0082);Gain of relative solvent accessibility (P = 0.0082);Gain of relative solvent accessibility (P = 0.0082);.;Gain of relative solvent accessibility (P = 0.0082);Gain of relative solvent accessibility (P = 0.0082);.;.;Gain of relative solvent accessibility (P = 0.0082);Gain of relative solvent accessibility (P = 0.0082);Gain of relative solvent accessibility (P = 0.0082);.;.;.;.;Gain of relative solvent accessibility (P = 0.0082);Gain of relative solvent accessibility (P = 0.0082);Gain of relative solvent accessibility (P = 0.0082);Gain of relative solvent accessibility (P = 0.0082);Gain of relative solvent accessibility (P = 0.0082);Gain of relative solvent accessibility (P = 0.0082);.;Gain of relative solvent accessibility (P = 0.0082);Gain of relative solvent accessibility (P = 0.0082);Gain of relative solvent accessibility (P = 0.0082);.;Gain of relative solvent accessibility (P = 0.0082);Gain of relative solvent accessibility (P = 0.0082);Gain of relative solvent accessibility (P = 0.0082);.;Gain of relative solvent accessibility (P = 0.0082);Gain of relative solvent accessibility (P = 0.0082);Gain of relative solvent accessibility (P = 0.0082);Gain of relative solvent accessibility (P = 0.0082);Gain of relative solvent accessibility (P = 0.0082);
MVP		0.87
MPC		2.6
ClinPred		0.99	D
GERP RS		5.9
Varity_R		0.96
gMVP		0.78

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.040		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: rs121913412; hg19: chr3-41266124; COSMIC: COSV62689580; COSMIC: COSV62689580;