3-49419325-C-G

Position:

• chr3-49419325-C-G

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_000481.4(AMT):​c.631G>C​(p.Glu211Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000205 in 1,461,880 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/23 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. E211K) has been classified as Benign.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000021 (0 hom.)
• Consequence: AMT NM_000481.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 2.57

Genes affected

AMT (HGNC:473): (aminomethyltransferase) This gene encodes one of four critical components of the glycine cleavage system. Mutations in this gene have been associated with glycine encephalopathy. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Sep 2011]

ENSG00000283189 (HGNC:):

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
AMT	NM_000481.4	c.631G>C	p.Glu211Gln	missense_variant	6/9	ENST00000273588.9	NP_000472.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
AMT	ENST00000273588.9	c.631G>C	p.Glu211Gln	missense_variant	6/9	1	NM_000481.4	ENSP00000273588.3
ENSG00000283189	ENST00000636166.1	c.868G>C	p.Glu290Gln	missense_variant	8/11	5		ENSP00000490106.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD3 exomes AF: 0.00000398 AC: 1 AN: 250992 Hom.: 0 AF XY: 0.00 AC XY: 0 AN XY: 135702

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00000882

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000205 AC: 3 AN: 1461880 Hom.: 0 Cov.: 31 AF XY: 0.00000138 AC XY: 1 AN XY: 727246

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.0000116

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00000180

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.14
BayesDel_addAF	Benign	-0.020	T
BayesDel_noAF	Benign	-0.27
CADD	Uncertain	26
DANN	Uncertain	0.98
DEOGEN2	Uncertain	0.51	D;.;.;T;T;T;.;.;T;T;.;.
Eigen	Benign	0.11
Eigen_PC	Benign	0.19
FATHMM_MKL	Uncertain	0.79	D
LIST_S2	Uncertain	0.94	D;D;D;D;D;D;D;D;D;D;D;D
M_CAP	Benign	0.021	T
MetaRNN	Benign	0.25	T;T;T;T;T;T;T;T;T;T;T;T
MetaSVM	Benign	-0.84	T
MutationAssessor	Benign	0.42	N;N;.;.;.;.;.;.;.;.;.;.
PrimateAI	Benign	0.47	T
PROVEAN	Benign	-1.1	N;N;N;.;.;.;.;.;.;.;.;.
REVEL	Benign	0.21
Sift	Benign	0.42	T;T;T;.;.;.;.;.;.;.;.;.
Sift4G	Benign	0.45	T;T;T;.;.;.;.;.;.;.;.;.
Polyphen		0.084	B;.;.;.;.;.;.;.;.;.;.;.
Vest4		0.33
MutPred		0.49		Gain of MoRF binding (P = 0.0658);Gain of MoRF binding (P = 0.0658);.;.;Gain of MoRF binding (P = 0.0658);.;.;.;.;.;.;.;
MVP		0.86
MPC		0.22
ClinPred		0.28	T
GERP RS		3.6
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.30
gMVP		0.55

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.66		Details are displayed if max score is > 0.2
DS_AG_spliceai		0.66		Position offset: -3

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Other links and lift over

dbSNP: rs116192290; hg19: chr3-49456758;