Variant 1-70430343-G-A details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2PP3

The NM_001902.6(CTH):c.673G>A(p.Val225Met) variant causes a missense change. The variant allele was found at a frequency of 0.0000268 in 1,602,874 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000028 ( 1 hom. )

Consequence

CTH
NM_001902.6 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 6.28

Variant links:

Genes affected

CTH (HGNC:2501): (cystathionine gamma-lyase) This gene encodes a cytoplasmic enzyme in the trans-sulfuration pathway that converts cystathione derived from methionine into cysteine. Glutathione synthesis in the liver is dependent upon the availability of cysteine. Mutations in this gene cause cystathioninuria. Alternative splicing of this gene results in three transcript variants encoding different isoforms. [provided by RefSeq, Jun 2010]

CTH links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.806

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
CTH	NM_001902.6 linkuse as main transcript	c.673G>A	p.Val225Met	missense_variant	7/12	ENST00000370938.8
CTH	NM_001190463.2 linkuse as main transcript	c.577G>A	p.Val193Met	missense_variant	6/11
CTH	NM_153742.5 linkuse as main transcript	c.541G>A	p.Val181Met	missense_variant	6/11
CTH	XM_017000416.3 linkuse as main transcript	c.103G>A	p.Val35Met	missense_variant	4/9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
CTH	ENST00000370938.8 linkuse as main transcript	c.673G>A	p.Val225Met	missense_variant	7/12	1	NM_001902.6	P1	P32929-1
CTH	ENST00000346806.2 linkuse as main transcript	c.541G>A	p.Val181Met	missense_variant	6/11	1			P32929-2
CTH	ENST00000411986.6 linkuse as main transcript	c.577G>A	p.Val193Met	missense_variant	6/11	2			P32929-3
CTH	ENST00000464926.1 linkuse as main transcript	n.721G>A		non_coding_transcript_exon_variant	6/6	5

Frequencies

GnomAD3 genomes

AF:

0.0000132

AC:

AN:

152036

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:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000477

AC:

AN:

251356

Hom.:

AF XY:

0.0000662

AC XY:

AN XY:

135856

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.000359

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.000163

GnomAD4 exome

AF:

0.0000283

AC:

AN:

1450838

Hom.:

Cov.:

AF XY:

0.0000346

AC XY:

AN XY:

722572

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000407

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.0000999

GnomAD4 genome

AF:

0.0000132

AC:

AN:

152036

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74268

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000207

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000712

Hom.:

ExAC

AF:

0.0000494

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3474

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Inborn genetic diseases

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Sep 23, 2023

The c.673G>A (p.V225M) alteration is located in exon 7 (coding exon 7) of the CTH gene. This alteration results from a G to A substitution at nucleotide position 673, causing the valine (V) at amino acid position 225 to be replaced by a methionine (M). 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

Uncertain

0.39

BayesDel_addAF

Uncertain

0.023

BayesDel_noAF

Uncertain

0.11

CADD

Uncertain

DANN

Uncertain

0.99

DEOGEN2

Uncertain

0.48

.;T;.

Eigen

Uncertain

0.45

Eigen_PC

Uncertain

0.44

FATHMM_MKL

Pathogenic

0.97

LIST_S2

Pathogenic

0.99

D;D;D

M_CAP

Benign

0.069

MetaRNN

Pathogenic

0.81

D;D;D

MetaSVM

Uncertain

0.48

MutationAssessor

Pathogenic

3.6

.;H;.

MutationTaster

Benign

1.0

D;D;D

PrimateAI

Uncertain

0.67

PROVEAN

Benign

-1.6

N;N;N

REVEL

Uncertain

0.61

Sift

Benign

0.033

D;D;D

Sift4G

Uncertain

0.054

T;T;T

Polyphen

0.81, 0.52

.;P;P

Vest4

0.76

MutPred

0.69

.;Loss of catalytic residue at V225 (P = 0.041);.;

MVP

0.86

MPC

0.33

ClinPred

0.53

GERP RS

5.5

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.44

gMVP

0.75

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