22-37813571-G-A
Position:
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
NM_014291.4 missense
Scores
3
10
6
Clinical Significance
Conservation
PhyloP100: 7.32
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]
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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 | 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 | c.538G>A | p.Asp180Asn | missense_variant | 4/9 | 1 | NM_014291.4 | ENSP00000248924 | P1 | |
GCAT | ENST00000323205.10 | c.616G>A | p.Asp206Asn | missense_variant | 4/10 | 2 | ENSP00000371110 | |||
GCAT | ENST00000451984.1 | c.679G>A | p.Asp227Asn | missense_variant | 4/4 | 3 | ENSP00000388151 | |||
GCAT | ENST00000426858.1 | c.*131G>A | 3_prime_UTR_variant, NMD_transcript_variant | 3/4 | 4 | ENSP00000402213 |
Frequencies
GnomAD3 genomes Cov.: 32
GnomAD3 genomes
Cov.:
32
GnomAD3 exomes AF: 0.00000804 AC: 2AN: 248894Hom.: 0 AF XY: 0.0000148 AC XY: 2AN XY: 134900
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GnomAD4 exome AF: 0.00000411 AC: 6AN: 1460642Hom.: 0 Cov.: 32 AF XY: 0.00000413 AC XY: 3AN XY: 726580
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GnomAD4 genome Cov.: 32
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32
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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:
Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
BayesDel_addAF
Pathogenic
D
BayesDel_noAF
Uncertain
CADD
Uncertain
DANN
Uncertain
DEOGEN2
Uncertain
.;D
Eigen
Uncertain
Eigen_PC
Uncertain
FATHMM_MKL
Uncertain
D
LIST_S2
Pathogenic
D;D
M_CAP
Uncertain
D
MetaRNN
Pathogenic
D;D
MetaSVM
Benign
T
MutationAssessor
Benign
.;L
MutationTaster
Benign
D;D
PrimateAI
Uncertain
T
PROVEAN
Uncertain
D;D
REVEL
Uncertain
Sift
Benign
T;T
Sift4G
Benign
T;T
Polyphen
0.030
.;B
Vest4
MutPred
0.88
.;Gain of MoRF binding (P = 0.0387);
MVP
MPC
ClinPred
D
GERP RS
Varity_R
gMVP
Splicing
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SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at