22-37813571-G-A

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

3
10
6

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]

Genome browser will be placed here

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
GCATNM_014291.4 linkuse as main transcriptc.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
GCATENST00000248924.11 linkuse as main transcriptc.538G>A p.Asp180Asn missense_variant 4/91 NM_014291.4 ENSP00000248924 P1O75600-1
GCATENST00000323205.10 linkuse as main transcriptc.616G>A p.Asp206Asn missense_variant 4/102 ENSP00000371110 O75600-2
GCATENST00000451984.1 linkuse as main transcriptc.679G>A p.Asp227Asn missense_variant 4/43 ENSP00000388151
GCATENST00000426858.1 linkuse as main transcriptc.*131G>A 3_prime_UTR_variant, NMD_transcript_variant 3/44 ENSP00000402213

Frequencies

GnomAD3 genomes
Cov.:
32
GnomAD3 exomes
AF:
0.00000804
AC:
2
AN:
248894
Hom.:
0
AF XY:
0.0000148
AC XY:
2
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:
6
AN:
1460642
Hom.:
0
Cov.:
32
AF XY:
0.00000413
AC XY:
3
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.:
32
ExAC
AF:
0.00000824
AC:
1
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 submitterclinical testingAmbry GeneticsDec 15, 2022The 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
D
BayesDel_noAF
Uncertain
0.020
CADD
Uncertain
24
DANN
Uncertain
1.0
DEOGEN2
Uncertain
0.61
.;D
Eigen
Uncertain
0.48
Eigen_PC
Uncertain
0.56
FATHMM_MKL
Uncertain
0.95
D
LIST_S2
Pathogenic
0.99
D;D
M_CAP
Uncertain
0.14
D
MetaRNN
Pathogenic
0.97
D;D
MetaSVM
Benign
-0.58
T
MutationAssessor
Benign
1.6
.;L
MutationTaster
Benign
1.0
D;D
PrimateAI
Uncertain
0.72
T
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
D
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.

Other links and lift over

dbSNP: rs745626193; hg19: chr22-38209578; API