Variant 13-99606745-C-T details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_206808.5(CLYBL):c.50C>T(p.Ala17Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000113 in 1,482,382 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. A17S) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.00069 ( 0 hom., cov: 31)

Exomes 𝑓: 0.000047 ( 0 hom. )

Consequence

CLYBL
NM_206808.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -0.0390

Variant links:

Genes affected

CLYBL (HGNC:18355): (citramalyl-CoA lyase) Enables (S)-citramalyl-CoA lyase activity; magnesium ion binding activity; and malate synthase activity. Involved in protein homotrimerization and regulation of cobalamin metabolic process. Predicted to be located in mitochondrion. Predicted to be integral component of membrane. [provided by Alliance of Genome Resources, Apr 2022]

CLYBL links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.01944834).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
CLYBL	NM_206808.5 linkuse as main transcript	c.50C>T	p.Ala17Val	missense_variant	1/9	ENST00000339105.9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
CLYBL	ENST00000339105.9 linkuse as main transcript	c.50C>T	p.Ala17Val	missense_variant	1/9	1	NM_206808.5	P1	Q8N0X4-1

Frequencies

GnomAD3 genomes

AF:

0.000695

AC:

105

AN:

151182

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00234

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000396

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:

0.0000147

Gnomad OTH

AF:

0.000962

GnomAD3 exomes

AF:

0.0000434

AC:

AN:

92270

Hom.:

AF XY:

0.0000192

AC XY:

AN XY:

52162

show subpopulations

Gnomad AFR exome

AF:

0.000946

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000563

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000473

AC:

AN:

1331088

Hom.:

Cov.:

AF XY:

0.0000289

AC XY:

AN XY:

656642

show subpopulations

Gnomad4 AFR exome

AF:

0.00189

Gnomad4 AMR exome

AF:

0.000103

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000683

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

9.49e-7

Gnomad4 OTH exome

AF:

0.000109

GnomAD4 genome

AF:

0.000694

AC:

105

AN:

151294

Hom.:

Cov.:

AF XY:

0.000568

AC XY:

AN XY:

73938

show subpopulations

Gnomad4 AFR

AF:

0.00233

Gnomad4 AMR

AF:

0.000395

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.000952

Alfa

AF:

0.000489

Hom.:

Bravo

AF:

0.000748

ExAC

AF:

0.000108

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Nov 03, 2023

The c.50C>T (p.A17V) alteration is located in exon 1 (coding exon 1) of the CLYBL gene. This alteration results from a C to T substitution at nucleotide position 50, causing the alanine (A) at amino acid position 17 to be replaced by a valine (V). 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

Benign

0.29

BayesDel_addAF

Benign

-0.44

BayesDel_noAF

Benign

-0.40

Cadd

Benign

Dann

Uncertain

0.98

DEOGEN2

Benign

0.063

T;.;T

Eigen

Benign

-0.71

Eigen_PC

Benign

-0.59

FATHMM_MKL

Benign

0.70

M_CAP

Benign

0.0082

MetaRNN

Benign

0.019

T;T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

1.9

L;L;L

MutationTaster

Benign

1.0

N;N;N;N;N

PrimateAI

Uncertain

0.64

PROVEAN

Benign

0.010

N;N;N

REVEL

Benign

0.029

Sift

Benign

0.33

T;T;T

Sift4G

Benign

0.29

T;T;T

Polyphen

0.0030

B;B;B

Vest4

0.27

MVP

0.27

ClinPred

0.094

GERP RS

1.6

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

2.0

Varity_R

0.037

gMVP

0.42

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

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