Variant 19-1399808-T-C details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Benign. Variant got -11 ACMG points: 2P and 13B. PM2BP4_StrongBP6_Very_StrongBP7

The NM_000156.6(GAMT):c.312A>G(p.Pro104=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000426 in 1,572,142 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000046 ( 0 hom. )

Consequence

GAMT
NM_000156.6 synonymous

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:3

Conservation

PhyloP100: 1.31

Variant links:

Genes affected

GAMT (HGNC:4136): (guanidinoacetate N-methyltransferase) The protein encoded by this gene is a methyltransferase that converts guanidoacetate to creatine, using S-adenosylmethionine as the methyl donor. Defects in this gene have been implicated in neurologic syndromes and muscular hypotonia, probably due to creatine deficiency and accumulation of guanidinoacetate in the brain of affected individuals. Two transcript variants encoding different isoforms have been described for this gene. Pseudogenes of this gene are found on chromosomes 2 and 13. [provided by RefSeq, Feb 2012]

GAMT links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -11 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.91).

BP6

Variant 19-1399808-T-C is Benign according to our data. Variant chr19-1399808-T-C is described in ClinVar as [Likely_benign]. Clinvar id is 205565.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BP7

Synonymous conserved (PhyloP=1.32 with no splicing effect.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
GAMT	NM_000156.6 linkuse as main transcript	c.312A>G	p.Pro104=	synonymous_variant	2/6	ENST00000252288.8	NP_000147.1
GAMT	NM_138924.3 linkuse as main transcript	c.312A>G	p.Pro104=	synonymous_variant	2/5		NP_620279.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
GAMT	ENST00000252288.8 linkuse as main transcript	c.312A>G	p.Pro104=	synonymous_variant	2/6	1	NM_000156.6	ENSP00000252288	P1	Q14353-1
GAMT	ENST00000447102.8 linkuse as main transcript	c.312A>G	p.Pro104=	synonymous_variant	2/5	2		ENSP00000403536		Q14353-2
GAMT	ENST00000640762.1 linkuse as main transcript	c.243A>G	p.Pro81=	synonymous_variant	2/6	5		ENSP00000492031
GAMT	ENST00000591788.3 linkuse as main transcript			upstream_gene_variant		5		ENSP00000466341

Frequencies

GnomAD3 genomes

AF:

0.00000658

AC:

AN:

152070

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000654

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

GnomAD3 exomes

AF:

0.0000701

AC:

AN:

185556

Hom.:

AF XY:

0.0000902

AC XY:

AN XY:

99832

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000714

Gnomad ASJ exome

AF:

0.000908

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000401

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000256

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000465

AC:

AN:

1420072

Hom.:

Cov.:

AF XY:

0.0000526

AC XY:

AN XY:

702988

show subpopulations

Gnomad4 AFR exome

AF:

0.0000307

Gnomad4 AMR exome

AF:

0.000103

Gnomad4 ASJ exome

AF:

0.00126

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000123

Gnomad4 FIN exome

AF:

0.0000207

Gnomad4 NFE exome

AF:

0.0000192

Gnomad4 OTH exome

AF:

0.0000851

GnomAD4 genome

AF:

0.00000658

AC:

AN:

152070

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74306

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.0000654

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000123

Hom.:

Bravo

AF:

0.0000264

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:3

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Benign:2

Benign, criteria provided, single submitter	clinical testing	GeneDx	Jan 19, 2015	This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -
Likely benign, criteria provided, single submitter	clinical testing	PreventionGenetics, part of Exact Sciences	-	- -

Cerebral creatine deficiency syndrome

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jan 28, 2024

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.91

CADD

Benign

3.5

DANN

Benign

0.66

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

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

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over