dbSNP rs1555384217: GATM:p.Met218Ile (chr15-45368091-C-T) – ACMG Classification: Uncertain_significance (3 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 3 ACMG points: 3P and 0B. PM2PP3

The NM_001482.3(GATM):c.654G>A(p.Met218Ile) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. 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. M218V) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)

Consequence

GATM
NM_001482.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 7.48

Publications

0 publications found

Variant links:

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]

GATM Gene-Disease associations (from GenCC):

AGAT deficiency
Inheritance: AR Classification: DEFINITIVE, STRONG, MODERATE, SUPPORTIVE Submitted by: Orphanet, Labcorp Genetics (formerly Invitae), G2P, Ambry Genetics, ClinGen
Fanconi renotubular syndrome 1
Inheritance: AD Classification: MODERATE Submitted by: Ambry Genetics
primary Fanconi syndrome
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

GATM links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.767

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001482.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	GATM	NM_001482.3	MANE Select	c.654G>A	p.Met218Ile	missense	Exon 4 of 9	NP_001473.1	P50440-1
	GATM	NM_001321015.2		c.267G>A	p.Met89Ile	missense	Exon 7 of 12	NP_001307944.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
GATM	ENST00000396659.8	TSL:1 MANE Select	c.654G>A	p.Met218Ile	missense	Exon 4 of 9	ENSP00000379895.3	P50440-1
GATM	ENST00000558362.5	TSL:1	n.2310G>A		non_coding_transcript_exon	Exon 3 of 8
GATM	ENST00000887717.1		c.681G>A	p.Met227Ile	missense	Exon 4 of 9	ENSP00000557776.1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

Cov.:

GnomAD4 genome

Cov.:

Alfa

AF:

0.0135

Hom.:

ClinVar

ClinVar submissions

Significance:Uncertain significance

Revision:criteria provided, single submitter

View on ClinVar

Pathogenic

VUS

Benign

Condition

Arginine:glycine amidinotransferase deficiency (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.98

BayesDel_addAF

Pathogenic

0.24

BayesDel_noAF

Uncertain

0.11

CADD

Pathogenic

(source)

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.45

Eigen

Pathogenic

0.79

Eigen_PC

Pathogenic

0.77

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Pathogenic

0.98

M_CAP

Benign

0.031

MetaRNN

Pathogenic

0.77

MetaSVM

Benign

-0.60

MutationAssessor

Uncertain

2.8

PhyloP100

7.5

PrimateAI

Uncertain

0.53

PROVEAN

Benign

-2.0

REVEL

Uncertain

0.40

Sift

Uncertain

0.027

Sift4G

Uncertain

0.044

Polyphen

1.0

Vest4

0.93

MutPred

0.55

Loss of ubiquitination at K215 (P = 0.0566)

MVP

0.57

MPC

1.4

ClinPred

0.97

GERP RS

5.5

Varity_R

0.65

gMVP

0.94

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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over