Variant 22-37813557-G-T details in Genebe, Genetics Data Aggregator

Variant summary

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

The NM_014291.4(GCAT):c.524G>T(p.Arg175Leu) variant causes a missense change. The variant allele was found at a frequency of 0.0000123 in 1,461,184 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic 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. R175C) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.000012 ( 0 hom. )

Consequence

GCAT
NM_014291.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 6.16

Variant links:

Genes affected

GCAT (HGNC:4188): (glycine C-acetyltransferase) The degradation of L-threonine to glycine consists of a two-step biochemical pathway involving the enzymes L-threonine dehydrogenase and 2-amino-3-ketobutyrate coenzyme A ligase. L-Threonine is first converted into 2-amino-3-ketobutyrate by L-threonine dehydrogenase. This gene encodes the second enzyme in this pathway, which then catalyzes the reaction between 2-amino-3-ketobutyrate and coenzyme A to form glycine and acetyl-CoA. The encoded enzyme is considered a class II pyridoxal-phosphate-dependent aminotransferase. Alternate splicing results in multiple transcript variants. A pseudogene of this gene is found on chromosome 14. [provided by RefSeq, Jan 2010]

GCAT 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, 0.784

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
GCAT	NM_014291.4 linkuse as main transcript	c.524G>T	p.Arg175Leu	missense_variant	4/9	ENST00000248924.11

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
GCAT	ENST00000248924.11 linkuse as main transcript	c.524G>T	p.Arg175Leu	missense_variant	4/9	1	NM_014291.4	P1	O75600-1
GCAT	ENST00000323205.10 linkuse as main transcript	c.602G>T	p.Arg201Leu	missense_variant	4/10	2			O75600-2
GCAT	ENST00000451984.1 linkuse as main transcript	c.665G>T	p.Arg222Leu	missense_variant	4/4	3
GCAT	ENST00000426858.1 linkuse as main transcript	c.*117G>T		3_prime_UTR_variant, NMD_transcript_variant	3/4	4

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000401

AC:

AN:

249566

Hom.:

AF XY:

0.00

AC XY:

AN XY:

135260

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:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000889

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000123

AC:

AN:

1461184

Hom.:

Cov.:

AF XY:

0.00000825

AC XY:

AN XY:

726886

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:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000153

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

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

Aug 14, 2023

The c.602G>T (p.R201L) alteration is located in exon 4 (coding exon 4) of the GCAT gene. This alteration results from a G to T substitution at nucleotide position 602, causing the arginine (R) at amino acid position 201 to be replaced by a leucine (L). 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

0.36

BayesDel_addAF

Pathogenic

0.32

BayesDel_noAF

Pathogenic

0.22

CADD

Uncertain

DANN

Uncertain

1.0

Eigen

Uncertain

0.32

Eigen_PC

Uncertain

0.40

FATHMM_MKL

Uncertain

0.96

LIST_S2

Pathogenic

0.99

D;D

M_CAP

Uncertain

0.25

MetaRNN

Pathogenic

0.78

D;D

MetaSVM

Uncertain

0.61

MutationTaster

Benign

1.0

D;D

PrimateAI

Uncertain

0.56

PROVEAN

Pathogenic

-6.4

D;D

REVEL

Pathogenic

0.81

Sift

Uncertain

0.0010

D;D

Sift4G

Benign

0.11

T;T

Polyphen

0.067

.;B

Vest4

0.64

MutPred

0.70

.;Loss of ubiquitination at K173 (P = 0.0368);

MVP

0.93

MPC

0.39

ClinPred

0.99

GERP RS

4.5

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.86

gMVP

0.77

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

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over