chr15-45378412-G-T

Variant names:

• chr15-45378412-G-T
• rs892312757
• NM_001482.3:c.42C>A

Variant summary

Our verdict is Likely benign. The variant received -1 ACMG points: 2P and 3B. PM2 BP4_Moderate BP7

The NM_001482.3(GATM):​c.42C>A​(p.Ala14Ala) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000658 in 151,934 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position (i.e. A14A) has been classified as Likely benign. The gene GATM is included in the ClinGen Criteria Specification Registry.

• Frequency:
  • Genomes: 𝑓 0.0000066 (0 hom., cov: 33)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: GATM NM_001482.3 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.718
• Publications: 0 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

ENSG00000275672 (HGNC:):

ACMG classification

Specifications for GATM are available in the ClinGen Criteria Specification Registry and recommended for reference when assigning criteria.

Our verdict: Likely_benign. The variant received -1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.34).
• BP7: Synonymous conserved (PhyloP=0.718 with no splicing effect.

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.42C>A	p.Ala14Ala	synonymous	Exon 1 of 9	NP_001473.1	P50440-1
	GATM	NM_001321015.2		c.-318-1593C>A		intron	N/A	NP_001307944.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	GATM	ENST00000396659.8	TSL:1 MANE Select	c.42C>A	p.Ala14Ala	synonymous	Exon 1 of 9	ENSP00000379895.3	P50440-1
	GATM	ENST00000558362.5	TSL:1	n.133C>A		non_coding_transcript_exon	Exon 1 of 8
	GATM	ENST00000887717.1		c.42C>A	p.Ala14Ala	synonymous	Exon 1 of 9	ENSP00000557776.1

Frequencies

GnomAD3 genomes AF: 0.00000658 AC: 1 AN: 151934 Hom.: 0 Cov.: 33

Gnomad AFR AF: 0.0000242

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00

Gnomad OTH AF: 0.00

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 1352610 Hom.: 0 Cov.: 30 AF XY: 0.00 AC XY: 0 AN XY: 666658

African (AFR) AF: 0.00 AC: 0 AN: 27850

American (AMR) AF: 0.00 AC: 0 AN: 31922

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 23934

East Asian (EAS) AF: 0.00 AC: 0 AN: 31978

South Asian (SAS) AF: 0.00 AC: 0 AN: 75860

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 34220

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 4830

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1065614

Other (OTH) AF: 0.00 AC: 0 AN: 56402

GnomAD4 genome AF: 0.00000658 AC: 1 AN: 151934 Hom.: 0 Cov.: 33 AF XY: 0.0000135 AC XY: 1 AN XY: 74216

African (AFR) AF: 0.0000242 AC: 1 AN: 41374

American (AMR) AF: 0.00 AC: 0 AN: 15270

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3468

East Asian (EAS) AF: 0.00 AC: 0 AN: 5144

South Asian (SAS) AF: 0.00 AC: 0 AN: 4820

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10592

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 314

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 67960

Other (OTH) AF: 0.00 AC: 0 AN: 2080

Alfa AF: 0.00 Hom.: 0

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.34
CADD	Benign	12
DANN	Benign	0.94
PhyloP100		0.72
PromoterAI		-0.045	Neutral

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

Other links and lift over

dbSNP: rs892312757; hg19: chr15-45670610;