rs147804855
Variant summary
Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate
The NM_001482.3(GATM):c.314C>T(p.Pro105Leu) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★★).
Frequency
Genomes: not found (cov: 32)
Consequence
GATM
NM_001482.3 missense
NM_001482.3 missense
Scores
1
6
12
Clinical Significance
Conservation
PhyloP100: 4.90
Genes affected
GATM (HGNC:4175): (glycine amidinotransferase) This gene encodes a mitochondrial enzyme that belongs to the amidinotransferase family. This enzyme is involved in creatine biosynthesis, whereby it catalyzes the transfer of a guanido group from L-arginine to glycine, resulting in guanidinoacetic acid, the immediate precursor of creatine. Mutations in this gene cause arginine:glycine amidinotransferase deficiency, an inborn error of creatine synthesis characterized by cognitive disability, language impairment, and behavioral disorders. [provided by RefSeq, Jul 2008]
Genome browser will be placed here
ACMG classification
Classification made for transcript
Verdict is Uncertain_significance. Variant got 0 ACMG points.
PM2
?
Very rare variant in population databases, with high coverage;
BP4
?
Computational evidence support a benign effect (MetaRNN=0.24880871).
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
GATM | NM_001482.3 | c.314C>T | p.Pro105Leu | missense_variant | 3/9 | ENST00000396659.8 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
GATM | ENST00000396659.8 | c.314C>T | p.Pro105Leu | missense_variant | 3/9 | 1 | NM_001482.3 | P1 |
Frequencies
GnomAD3 genomes ? Cov.: 32
GnomAD3 genomes
?
Cov.:
32
GnomAD4 exome Cov.: 31
GnomAD4 exome
Cov.:
31
GnomAD4 genome ? Cov.: 32
GnomAD4 genome
?
Cov.:
32
Bravo
AF:
ESP6500AA
AF:
AC:
1
ESP6500EA
AF:
AC:
0
ClinVar
Significance: Uncertain significance
Submissions summary: Uncertain:1Other:1
Revision: reviewed by expert panel
LINK: link
Submissions by phenotype
Arginine:glycine amidinotransferase deficiency Uncertain:1
Uncertain significance, reviewed by expert panel | curation | ClinGen Cerebral Creatine Deficiency Syndromes Variant Curation Expert Panel, ClinGen | Jan 24, 2023 | The NM_001482.3:c.314C>T variant in GATM is a missense variant that is predicted to result in the substitution of proline by leucine and amino acid position 105 (p.Pro105Leu). To our knowledge, this variant has not been reported in an individual with AGAT deficiency in the published literature. It is absent in gnomAD v2.1.1. (PM2_Supporting). When overexpressed in HeLa cells, the variant resulted in <15% of wild-type activity (PMID: 27233232) (PS3_Supporting). The computational predictor REVEL gives a score of 0.066 which is below the threshold of 0.15, evidence that does not predict a damaging effect on AGAT function (BP4). There is a ClinVar entry for this variant (Variation ID: 225913). In summary, this variant meets the criteria to be classified as a variant of uncertain significance for AGAT deficiency. GATM-specific ACMG/AMP criteria applied, as specified by the ClinGen CCDS VCEP (Specifications Version 1.1.0): PS3_Supporting, PM2_Supporting, BP4. (Classification approved by the ClinGen CCDS VCEP on January 25, 2023). - |
not provided Other:1
not provided, no classification provided | in vitro | Hospital for Sick Children | - | - - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
BayesDel_addAF
Benign
T
BayesDel_noAF
Benign
Cadd
Benign
Dann
Uncertain
DEOGEN2
Uncertain
D;.;.
Eigen
Benign
Eigen_PC
Uncertain
FATHMM_MKL
Pathogenic
D
LIST_S2
Uncertain
D;D;D
M_CAP
Benign
T
MetaRNN
Benign
T;T;T
MetaSVM
Benign
T
MutationAssessor
Uncertain
M;M;.
MutationTaster
Benign
D;D
PrimateAI
Benign
T
PROVEAN
Uncertain
N;N;N
REVEL
Benign
Sift
Benign
T;T;D
Sift4G
Benign
T;T;.
Polyphen
B;B;.
Vest4
MVP
MPC
ClinPred
D
GERP RS
RBP_binding_hub_radar
RBP_regulation_power_radar
Varity_R
gMVP
Splicing
Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at