Genetic Variant CLYBL:p.Arg11Cys (chr13-99606726-C-T) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

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

The NM_206808.5(CLYBL):c.31C>T(p.Arg11Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000271 in 1,490,350 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/21 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. R11G) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.00082 ( 0 hom., cov: 31)

Exomes 𝑓: 0.00021 ( 0 hom. )

Consequence

CLYBL
NM_206808.5 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 0.818

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:

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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=0.008576959).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CLYBL	NM_206808.5 link	c.31C>T	p.Arg11Cys	missense_variant	Exon 1 of 9	ENST00000339105.9	NP_996531.1	Q8N0X4-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CLYBL	ENST00000339105.9 link	c.31C>T	p.Arg11Cys	missense_variant	Exon 1 of 9	1	NM_206808.5	ENSP00000342991.4		Q8N0X4-1

Frequencies

GnomAD3 genomes

AF:

0.000818

AC:

124

AN:

151596

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00282

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000394

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:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000109

AC:

AN:

100508

Hom.:

AF XY:

0.000106

AC XY:

AN XY:

56640

show subpopulations

Gnomad AFR exome

AF:

0.00368

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:

0.0000499

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000209

AC:

280

AN:

1338644

Hom.:

Cov.:

AF XY:

0.000215

AC XY:

142

AN XY:

660684

show subpopulations

Gnomad4 AFR exome

AF:

0.00380

Gnomad4 AMR exome

AF:

0.0000993

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000814

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000150

Gnomad4 OTH exome

AF:

0.000162

GnomAD4 genome

AF:

0.000817

AC:

124

AN:

151706

Hom.:

Cov.:

AF XY:

0.000876

AC XY:

AN XY:

74174

show subpopulations

Gnomad4 AFR

AF:

0.00281

Gnomad4 AMR

AF:

0.000394

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000294

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000490

Hom.:

Bravo

AF:

0.000997

ESP6500AA

AF:

0.00218

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000143

AC:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.83

BayesDel_addAF

Benign

-0.33

BayesDel_noAF

Benign

-0.25

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Benign

0.081

T;.;T

Eigen

Benign

-0.22

Eigen_PC

Benign

-0.25

FATHMM_MKL

Benign

0.26

LIST_S2

Benign

0.68

.;T;T

M_CAP

Benign

0.057

MetaRNN

Benign

0.0086

T;T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

1.9

L;L;L

PrimateAI

Pathogenic

0.80

PROVEAN

Benign

-1.1

N;N;N

REVEL

Benign

0.12

Sift

Uncertain

0.010

D;D;D

Sift4G

Uncertain

0.0030

D;D;D

Polyphen

0.97

D;D;D

Vest4

0.30

MVP

0.43

ClinPred

0.10

GERP RS

3.5

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.0

Varity_R

0.20

gMVP

0.49

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

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

Computational scores

Splicing

Publications

LitVar

Other links and lift over