Genetic Variant CTNNB1:c.-9G>C (chr3-41224060-G-C) – ACMG Classification: Benign (-13 pts)

Variant summary

Our verdict is Benign. The variant received -13 ACMG points: 0P and 13B. BP4_StrongBP6BS1BS2

The NM_001904.4(CTNNB1):c.-9G>C variant causes a 5 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000871 in 1,613,682 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 (no stars).

Frequency

Genomes: 𝑓 0.00039 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00092 ( 2 hom. )

Consequence

CTNNB1
NM_001904.4 5_prime_UTR

Scores

Clinical Significance

Likely benign no assertion criteria provided B:1

Conservation

PhyloP100: -0.269

Publications

4 publications found

Variant links:

COSMIC-nc: COSV104667493

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

CTNNB1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -13 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.75).

BP6

Variant 3-41224060-G-C is Benign according to our data. Variant chr3-41224060-G-C is described in ClinVar as Likely_benign. ClinVar VariationId is 3052758.Status of the report is no_assertion_criteria_provided, 0 stars.

BS1

Variant frequency is greater than expected in population nfe. GnomAd4 allele frequency = 0.000387 (59/152262) while in subpopulation NFE AF = 0.000764 (52/68028). AF 95% confidence interval is 0.000599. There are 0 homozygotes in GnomAd4. There are 27 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

BS2

High AC in GnomAd4 at 59 AD,Unknown gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001904.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	Effect	Exon Rank	Protein	UniProt
CTNNB1	NM_001904.4	MANE Select	c.-9G>C	5_prime_UTR	Exon 2 of 15	NP_001895.1	P35222
CTNNB1	NM_001098209.2		c.-9G>C	5_prime_UTR	Exon 2 of 16	NP_001091679.1	P35222
CTNNB1	NM_001098210.2		c.-9G>C	5_prime_UTR	Exon 2 of 16	NP_001091680.1	P35222

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	Effect	Exon Rank	Protein	UniProt
CTNNB1	ENST00000349496.11	TSL:1 MANE Select	c.-9G>C	5_prime_UTR	Exon 2 of 15	ENSP00000344456.5	P35222
CTNNB1	ENST00000396183.7	TSL:1	c.-9G>C	5_prime_UTR	Exon 2 of 16	ENSP00000379486.3	P35222
CTNNB1	ENST00000396185.8	TSL:1	c.-9G>C	5_prime_UTR	Exon 2 of 16	ENSP00000379488.3	P35222

Frequencies

GnomAD3 genomes

AF:

0.000388

AC:

AN:

152144

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000169

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

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:

0.000764

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.000422

AC:

106

AN:

251326

AF XY:

0.000427

show subpopulations

Gnomad AFR exome

AF:

0.0000615

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000898

Gnomad OTH exome

AF:

0.000489

GnomAD4 exome

AF:

0.000922

AC:

1347

AN:

1461420

Hom.:

Cov.:

AF XY:

0.000868

AC XY:

631

AN XY:

727046

show subpopulations

African (AFR)

AF:

0.000120

AC:

AN:

33452

American (AMR)

AF:

0.00

AC:

AN:

44710

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26112

East Asian (EAS)

AF:

0.00

AC:

AN:

39698

South Asian (SAS)

AF:

0.0000116

AC:

AN:

86248

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53418

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5758

European-Non Finnish (NFE)

AF:

0.00111

AC:

1238

AN:

1111658

Other (OTH)

AF:

0.00172

AC:

104

AN:

60366

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.462

Heterozygous variant carriers

128

193

257

321

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

104

156

208

260

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.000387

AC:

AN:

152262

Hom.:

Cov.:

AF XY:

0.000363

AC XY:

AN XY:

74448

show subpopulations

African (AFR)

AF:

0.000169

AC:

AN:

41542

American (AMR)

AF:

0.00

AC:

AN:

15282

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3468

East Asian (EAS)

AF:

0.00

AC:

AN:

5188

South Asian (SAS)

AF:

0.00

AC:

AN:

4824

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10614

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000764

AC:

AN:

68028

Other (OTH)

AF:

0.00

AC:

AN:

2110

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.511

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.000670

Hom.:

Bravo

AF:

0.000412

EpiCase

AF:

0.00120

EpiControl

AF:

0.000948

ClinVar

ClinVar submissions

Significance:Likely benign

Revision:no assertion criteria provided

View on ClinVar

Pathogenic

VUS

Benign

Condition

CTNNB1-related disorder (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.75

CADD

Benign

5.5

(source)

DANN

Benign

0.85

PhyloP100

-0.27

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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over