NM_001330.5:c.55C>A

Variant names:

Variant summary

Our verdict is Benign. Variant got -10 ACMG points: 2P and 12B. PM2BP4_StrongBP6_Very_Strong

The NM_001330.5(CTF1):c.55C>A(p.Leu19Ile) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000049 in 1,613,670 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.000085 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000045 ( 1 hom. )

Consequence

CTF1
NM_001330.5 missense

Scores

Clinical Significance

Likely benign criteria provided, multiple submitters, no conflicts B:2

Conservation

PhyloP100: 0.109

Variant links:

Genes affected

CTF1 (HGNC:2499): (cardiotrophin 1) The protein encoded by this gene is a secreted cytokine that induces cardiac myocyte hypertrophy in vitro. It has been shown to bind and activate the ILST/gp130 receoptor. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Dec 2008]

CTF1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -10 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.013361663).

BP6

Variant 16-30899444-C-A is Benign according to our data. Variant chr16-30899444-C-A is described in ClinVar as [Likely_benign]. Clinvar id is 701490.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CTF1	NM_001330.5 link	c.55C>A	p.Leu19Ile	missense_variant	Exon 2 of 3	ENST00000279804.3	NP_001321.1	Q16619-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CTF1	ENST00000279804.3 link	c.55C>A	p.Leu19Ile	missense_variant	Exon 2 of 3	1	NM_001330.5	ENSP00000279804.2		Q16619-1
CTF1	ENST00000395019.3 link	c.52C>A	p.Leu18Ile	missense_variant	Exon 2 of 3	1		ENSP00000378465.3		Q16619-2

Frequencies

GnomAD3 genomes

AF:

0.0000855

AC:

AN:

152026

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00232

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000155

AC:

AN:

251130

Hom.:

AF XY:

0.000155

AC XY:

AN XY:

135776

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00212

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000452

AC:

AN:

1461526

Hom.:

Cov.:

AF XY:

0.0000481

AC XY:

AN XY:

727092

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00111

Gnomad4 SAS exome

AF:

0.0000232

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

9.00e-7

Gnomad4 OTH exome

AF:

0.000315

GnomAD4 genome

AF:

0.0000854

AC:

AN:

152144

Hom.:

Cov.:

AF XY:

0.000108

AC XY:

AN XY:

74382

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00232

Gnomad4 SAS

AF:

0.000207

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000680

Hom.:

Bravo

AF:

0.000144

ExAC

AF:

0.000132

AC:

Asia WGS

AF:

0.000866

AC:

AN:

3478

ClinVar

Significance: Likely benign

Submissions summary: Benign:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Benign:1

Jan 21, 2019

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Variant summary: CTF1 c.55C>A (p.Leu19Ile) results in a conservative amino acid change in the encoded protein sequence. Five of five in-silico tools predict a benign effect of the variant on protein function. The variant allele was found at a frequency of 0.00015 in 276860 control chromosomes, predominantly at a frequency of 0.0022 within the East Asian subpopulation in the gnomAD database. The observed variant frequency within East Asian control individuals in the gnomAD database is approximately 88 fold of the estimated maximal expected allele frequency for a pathogenic variant in CTF1 causing Cardiomyopathy phenotype (2.5e-05), strongly suggesting that the variant is a benign polymorphism found primarily in populations of East Asian origin. To our knowledge, no occurrence of c.55C>A in individuals affected with Cardiomyopathy and no experimental evidence demonstrating its impact on protein function have been reported. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar after 2014. Based on the evidence outlined above, the variant was classified as likely benign. -

Dilated Cardiomyopathy, Dominant

Benign:1

Oct 16, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.11

BayesDel_addAF

Benign

-0.49

BayesDel_noAF

Benign

-0.48

CADD

Benign

DANN

Benign

0.94

DEOGEN2

Benign

0.27

T;.

Eigen

Benign

-0.51

Eigen_PC

Benign

-0.37

FATHMM_MKL

Benign

0.68

LIST_S2

Benign

0.61

T;T

M_CAP

Benign

0.024

MetaRNN

Benign

0.013

T;T

MetaSVM

Benign

-0.81

MutationAssessor

Benign

0.69

N;.

PrimateAI

Benign

0.27

PROVEAN

Benign

-0.43

N;N

REVEL

Uncertain

0.33

Sift

Benign

0.37

T;T

Sift4G

Benign

0.41

T;T

Polyphen

0.078

B;.

Vest4

0.14

MutPred

0.18

Loss of catalytic residue at L19 (P = 0.0397);.;

MVP

0.67

MPC

0.48

ClinPred

0.014

GERP RS

0.034

Varity_R

0.046

gMVP

0.091

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.020

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over