Genetic Variant CRTC1:p.Gly310Val (chr19-18765446-G-T) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_015321.3(CRTC1):c.929G>T(p.Gly310Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000657 in 152,184 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/22 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. G310A) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0 ( 0 hom. )

Failed GnomAD Quality Control

Consequence

CRTC1
NM_015321.3 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 1.19

Publications

0 publications found

Variant links:

Genes affected

CRTC1 (HGNC:16062): (CREB regulated transcription coactivator 1) Enables cAMP response element binding protein binding activity. Involved in positive regulation of transcription by RNA polymerase II. Located in cytosol; nuclear body; and plasma membrane. [provided by Alliance of Genome Resources, Apr 2022]

CRTC1 links:

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ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.04022941).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CRTC1	NM_015321.3 link	c.929G>T	p.Gly310Val	missense_variant	Exon 9 of 14	ENST00000321949.13	NP_056136.2	Q6UUV9-1
CRTC1	NM_001098482.2 link	c.977G>T	p.Gly326Val	missense_variant	Exon 10 of 15		NP_001091952.1	Q6UUV9-2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
CRTC1	ENST00000321949.13 link	c.929G>T	p.Gly310Val	missense_variant	Exon 9 of 14	1	NM_015321.3	ENSP00000323332.7	Q6UUV9-1
CRTC1	ENST00000338797.10 link	c.977G>T	p.Gly326Val	missense_variant	Exon 10 of 15	1		ENSP00000345001.5	Q6UUV9-2
CRTC1	ENST00000594658.5 link	c.806G>T	p.Gly269Val	missense_variant	Exon 9 of 14	1		ENSP00000468893.1	M0QX46
CRTC1	ENST00000601916.1 link	c.704G>T	p.Gly235Val	missense_variant	Exon 8 of 10	5		ENSP00000469285.1	M0QXN6

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152184

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD4 exome

Data not reliable, filtered out with message: AC0

AF:

0.00

AC:

AN:

1460674

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

726682

African (AFR)

AF:

0.00

AC:

AN:

33480

American (AMR)

AF:

0.00

AC:

AN:

44676

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26132

East Asian (EAS)

AF:

0.00

AC:

AN:

39696

South Asian (SAS)

AF:

0.00

AC:

AN:

86162

European-Finnish (FIN)

AF:

0.00

AC:

AN:

52558

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1111824

Other (OTH)

AF:

0.00

AC:

AN:

60378

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152184

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74342

show subpopulations

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.0000241

AC:

AN:

41440

American (AMR)

AF:

0.00

AC:

AN:

15268

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5194

South Asian (SAS)

AF:

0.00

AC:

AN:

4828

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10622

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68042

Other (OTH)

AF:

0.00

AC:

AN:

2092

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5. (p-value = 0.000000), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.275

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.074

BayesDel_addAF

Benign

-0.31

BayesDel_noAF

Benign

-0.68

CADD

Benign

(source)

DANN

Benign

0.79

DEOGEN2

Benign

0.25

T;.;.;.

Eigen

Benign

-1.0

Eigen_PC

Benign

-1.0

FATHMM_MKL

Benign

0.088

LIST_S2

Benign

0.77

T;T;T;T

M_CAP

Benign

0.0048

MetaRNN

Benign

0.040

T;T;T;T

MetaSVM

Benign

-0.95

MutationAssessor

Benign

1.5

L;.;.;.

PhyloP100

1.2

PrimateAI

Benign

0.47

PROVEAN

Benign

-0.79

N;N;.;.

REVEL

Benign

0.057

Sift

Benign

0.32

T;T;.;.

Sift4G

Benign

0.53

T;T;T;T

Polyphen

0.0

B;B;.;.

Vest4

0.15

MutPred

0.12

Loss of loop (P = 0.0374);.;.;.;

MVP

0.13

MPC

0.72

ClinPred

0.047

GERP RS

0.077

Varity_R

0.045

gMVP

0.21

Mutation Taster

=92/8

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over