Variant chr22-37813571-G-A details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Likely pathogenic. Variant got 6 ACMG points: 6P and 0B. PM2PP3_Strong

The NM_014291.4(GCAT):c.538G>A(p.Asp180Asn) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000411 in 1,460,642 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 (★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000041 ( 0 hom. )

Consequence

GCAT
NM_014291.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 7.32

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 Likely_pathogenic. Variant got 6 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.969

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
GCAT	NM_014291.4 linkuse as main transcript	c.538G>A	p.Asp180Asn	missense_variant	4/9	ENST00000248924.11	NP_055106.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
GCAT	ENST00000248924.11 linkuse as main transcript	c.538G>A	p.Asp180Asn	missense_variant	4/9	1	NM_014291.4	ENSP00000248924	P1	O75600-1
GCAT	ENST00000323205.10 linkuse as main transcript	c.616G>A	p.Asp206Asn	missense_variant	4/10	2		ENSP00000371110		O75600-2
GCAT	ENST00000451984.1 linkuse as main transcript	c.679G>A	p.Asp227Asn	missense_variant	4/4	3		ENSP00000388151
GCAT	ENST00000426858.1 linkuse as main transcript	c.*131G>A		3_prime_UTR_variant, NMD_transcript_variant	3/4	4		ENSP00000402213

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000804

AC:

AN:

248894

Hom.:

AF XY:

0.0000148

AC XY:

AN XY:

134900

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:

0.0000178

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000411

AC:

AN:

1460642

Hom.:

Cov.:

AF XY:

0.00000413

AC XY:

AN XY:

726580

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:

0.00000540

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

ExAC

AF:

0.00000824

AC:

EpiCase

AF:

0.0000545

EpiControl

AF:

0.0000593

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

Dec 15, 2022

The c.616G>A (p.D206N) alteration is located in exon 4 (coding exon 4) of the GCAT gene. This alteration results from a G to A substitution at nucleotide position 616, causing the aspartic acid (D) at amino acid position 206 to be replaced by an asparagine (N). 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

0.13

BayesDel_addAF

Pathogenic

0.17

BayesDel_noAF

Uncertain

0.020

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.61

.;D

Eigen

Uncertain

0.48

Eigen_PC

Uncertain

0.56

FATHMM_MKL

Uncertain

0.95

LIST_S2

Pathogenic

0.99

D;D

M_CAP

Uncertain

0.14

MetaRNN

Pathogenic

0.97

D;D

MetaSVM

Benign

-0.58

MutationAssessor

Benign

1.6

.;L

MutationTaster

Benign

1.0

D;D

PrimateAI

Uncertain

0.72

PROVEAN

Uncertain

-3.9

D;D

REVEL

Uncertain

0.63

Sift

Benign

0.20

T;T

Sift4G

Benign

0.14

T;T

Polyphen

0.030

.;B

Vest4

0.93

MutPred

0.88

.;Gain of MoRF binding (P = 0.0387);

MVP

0.97

MPC

0.59

ClinPred

0.88

GERP RS

5.5

Varity_R

0.56

gMVP

0.62

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