20-37746497-A-G

Position:

• chr20-37746497-A-G

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2 PP3

The NM_030877.5(CTNNBL1):​c.356A>G​(p.Asp119Gly) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,461,724 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 Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: CTNNBL1 NM_030877.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 9.06

Genes affected

CTNNBL1 (HGNC:15879): (catenin beta like 1) The protein encoded by this gene is a component of the pre-mRNA-processing factor 19-cell division cycle 5-like (PRP19-CDC5L) protein complex, which activates pre-mRNA splicing and is an integral part of the spliceosome. The encoded protein is also a nuclear localization sequence binding protein, and binds to activation-induced deaminase and is important for antibody diversification. This gene may also be associated with the development of obesity. Alternative splicing results in multiple transcript variants. A pseudogene of this gene has been defined on the X chromosome. [provided by RefSeq, Jul 2013]

ACMG classification

Verdict is Uncertain_significance. Variant got 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.747

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
CTNNBL1	NM_030877.5	c.356A>G	p.Asp119Gly	missense_variant	4/16	ENST00000361383.11
CTNNBL1	NM_001281495.2	c.275A>G	p.Asp92Gly	missense_variant	5/17
CTNNBL1	XM_024451947.2	c.275A>G	p.Asp92Gly	missense_variant	5/17
CTNNBL1	XM_011528917.3	c.26A>G	p.Asp9Gly	missense_variant	2/14

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
CTNNBL1	ENST00000361383.11	c.356A>G	p.Asp119Gly	missense_variant	4/16	1	NM_030877.5	P1
CTNNBL1	ENST00000373473.5	c.-148A>G		5_prime_UTR_variant	2/13	1
CTNNBL1	ENST00000628103.2	c.275A>G	p.Asp92Gly	missense_variant	5/17	2
CTNNBL1	ENST00000447935.3	c.275A>G	p.Asp92Gly	missense_variant	5/7	5

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000137 AC: 2 AN: 1461724 Hom.: 0 Cov.: 31 AF XY: 0.00000275 AC XY: 2 AN XY: 727144

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: 0.00000180

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Mar 04, 2024

The c.356A>G (p.D119G) alteration is located in exon 4 (coding exon 4) of the CTNNBL1 gene. This alteration results from a A to G substitution at nucleotide position 356, causing the aspartic acid (D) at amino acid position 119 to be replaced by a glycine (G). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.84
BayesDel_addAF	Uncertain	0.13	D
BayesDel_noAF	Uncertain	-0.050
CADD	Pathogenic	27
DANN	Uncertain	1.0
Eigen	Pathogenic	0.69
Eigen_PC	Pathogenic	0.69
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Uncertain	0.97	D;D;D;D;.
M_CAP	Benign	0.037	D
MetaRNN	Pathogenic	0.75	D;D;D;D;D
MetaSVM	Benign	-0.71	T
MutationTaster	Benign	1.0	D;D;D
PrimateAI	Pathogenic	0.87	D
Sift4G	Uncertain	0.033	D;T;D;D;T
Polyphen		0.91, 0.90	.;.;P;P;.
Vest4		0.71
MutPred		0.50		Loss of helix (P = 0.0138);.;Loss of helix (P = 0.0138);.;.;
MVP		0.42
MPC		1.5
ClinPred		0.99	D
GERP RS		5.2
RBP_binding_hub_radar		0.97
RBP_regulation_power_radar		2.7
Varity_R		0.82
gMVP		0.85

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr20-36374899;