rs139599307

Variant names:

• chr15-45364798-G-A
• rs139599307
• NM_001482.3:c.1041C>T

Your query was ambiguous. Multiple possible variants found:

• chr15-45364798-G-A
• chr15-45364798-G-C
• chr15-45364798-G-T

Variant summary

Our verdict is Benign. The variant received -8 ACMG points: 0P and 8B. BA1

This summary comes from the ClinGen Evidence Repository: The NM_001482.3:c.1041C>T variant in GATM is a synonymous (silent) variant (p.Asp347=). SpliceAI does not predict an impact on splicing, but BP7 was not applied because the nucleotide is conserved (GERP score > 5). To our knowledge, this variant has not been reported in the literature and results of functional studies are unavailable. The highest population minor allele frequency in gnomAD v2.1.1 is 0.00101 (31/30616 alleles) in the South Asian population, which is higher than the ClinGen CCDS VCEP’s threshold for BA1 (>0.0005), and therefore meets this criterion (BA1). There is a ClinVar entry for this variant (Variation ID: 137450). In summary, this variant meets the criteria to be classified as benign for AGAT deficiency based on the ACMG/AMP criteria applied, as specified by the ClinGen Cerebral Creatine Deficiency Syndromes Variant Curation Expert Panel (Specifications Version 1.1.0): BA1.(Classification approved by the ClinGen Cerebral Creatine Deficiency Syndromes Variant Curation Expert Panel on August 20, 2024). LINK:https://erepo.genome.network/evrepo/ui/classification/CA291039/MONDO:0012996/025

• Frequency:
  • Genomes: 𝑓 0.000099 (0 hom., cov: 32)
  • Exomes 𝑓: 0.00013 (0 hom.)
• Consequence: GATM NM_001482.3 splice_region, synonymous
• Scores: Splicing: ADA: 0.001379
• Clinical Significance: Benign reviewed by expert panel U:1 B:5
• Conservation: PhyloP100: 0.741
• Publications: 3 publications found

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

ACMG classification

Our verdict: Benign. The variant received -8 ACMG points.

• BA1: For more information check the summary or visit ClinGen Evidence Repository.

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.1041C>T	p.Asp347Asp	splice_region synonymous	Exon 7 of 9	NP_001473.1	P50440-1
	GATM	NM_001321015.2		c.654C>T	p.Asp218Asp	splice_region synonymous	Exon 10 of 12	NP_001307944.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	GATM	ENST00000396659.8	TSL:1 MANE Select	c.1041C>T	p.Asp347Asp	splice_region synonymous	Exon 7 of 9	ENSP00000379895.3	P50440-1
	GATM	ENST00000558362.5	TSL:1	n.2697C>T		splice_region non_coding_transcript_exon	Exon 6 of 8
	GATM	ENST00000887717.1		c.1068C>T	p.Asp356Asp	splice_region synonymous	Exon 7 of 9	ENSP00000557776.1

Frequencies

GnomAD3 genomes AF: 0.0000986 AC: 15 AN: 152082 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.0000483

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.000193

Gnomad SAS AF: 0.000829

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.000118

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.000235 AC: 59 AN: 251396 AF XY: 0.000302

Gnomad AFR exome AF: 0.0000615

Gnomad AMR exome AF: 0.0000289

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.000211

Gnomad OTH exome AF: 0.000326

GnomAD4 exome AF: 0.000135 AC: 197 AN: 1459752 Hom.: 0 Cov.: 29 AF XY: 0.000172 AC XY: 125 AN XY: 726320

African (AFR) AF: 0.0000598 AC: 2 AN: 33432

American (AMR) AF: 0.0000224 AC: 1 AN: 44718

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26116

East Asian (EAS) AF: 0.00 AC: 0 AN: 39662

South Asian (SAS) AF: 0.00107 AC: 92 AN: 86216

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53398

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5766

European-Non Finnish (NFE) AF: 0.0000793 AC: 88 AN: 1110130

Other (OTH) AF: 0.000232 AC: 14 AN: 60314

GnomAD4 genome AF: 0.0000986 AC: 15 AN: 152082 Hom.: 0 Cov.: 32 AF XY: 0.000135 AC XY: 10 AN XY: 74278

African (AFR) AF: 0.0000483 AC: 2 AN: 41422

American (AMR) AF: 0.00 AC: 0 AN: 15272

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3466

East Asian (EAS) AF: 0.000193 AC: 1 AN: 5194

South Asian (SAS) AF: 0.000829 AC: 4 AN: 4824

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10576

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.000118 AC: 8 AN: 68010

Other (OTH) AF: 0.00 AC: 0 AN: 2092

Alfa AF: 0.000161 Hom.: 0

Bravo AF: 0.000110

Asia WGS AF: 0.000577 AC: 2 AN: 3478

EpiCase AF: 0.0000545

EpiControl AF: 0.000119

ClinVar

ClinVar submissions

Significance: Benign

Revision: reviewed by expert panel

Pathogenic	VUS	Benign	Condition
-	1	2	Arginine:glycine amidinotransferase deficiency (3)
-	-	2	not specified (2)
-	-	1	Inborn genetic diseases (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.52
CADD	Benign	4.8
DANN	Benign	0.58
PhyloP100		0.74
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Mutation Taster		=71/29	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Benign	0.0014
dbscSNV1_RF	Benign	0.076
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

Other links and lift over

dbSNP: rs139599307; hg19: chr15-45656996;