Genetic Variant NTMT1:p.Arg46Trp (chr9-129632839-C-T) – ACMG Classification: Uncertain_significance (1 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2BP4

The NM_014064.4(NTMT1):c.136C>T(p.Arg46Trp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000015 in 1,461,820 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 Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R46Q) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 0.000015 ( 0 hom. )

Consequence

NTMT1
NM_014064.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.89

Variant links:

Genes affected

NTMT1 (HGNC:23373): (N-terminal Xaa-Pro-Lys N-methyltransferase 1) The METTL11A gene encodes an N-terminal methyltransferase for the RAN (MIM 601179) guanine nucleotide exchange factor regulator of chromosome condensation 1 (RCC1; MIM 179710). METTL11A enzyme alpha-N-methylates other protein targets such as SET (MIM 600960) and RB (MIM 180200).[supplied by OMIM, Nov 2010]

NTMT1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.42283398).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
NTMT1	NM_014064.4 link	c.136C>T	p.Arg46Trp	missense_variant	Exon 2 of 4	ENST00000372483.9	NP_054783.2	Q9BV86-1A0A024R8E4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
NTMT1	ENST00000372483.9 link	c.136C>T	p.Arg46Trp	missense_variant	Exon 2 of 4	1	NM_014064.4	ENSP00000361561.4		Q9BV86-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.0000239

AC:

AN:

250652

Hom.:

AF XY:

0.0000221

AC XY:

AN XY:

135542

show subpopulations

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:

0.0000327

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000443

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000150

AC:

AN:

1461820

Hom.:

Cov.:

AF XY:

0.0000165

AC XY:

AN XY:

727212

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000224

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000348

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000153

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

Cov.:

Alfa

AF:

0.0000789

Hom.:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.0000330

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Nov 09, 2022

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.136C>T (p.R46W) alteration is located in exon 2 (coding exon 1) of the NTMT1 gene. This alteration results from a C to T substitution at nucleotide position 136, causing the arginine (R) at amino acid position 46 to be replaced by a tryptophan (W). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.26

BayesDel_addAF

Benign

-0.055

BayesDel_noAF

Benign

-0.21

CADD

Pathogenic

DANN

Pathogenic

1.0

DEOGEN2

Benign

0.15

T;T;T;T;T;.;T

Eigen

Uncertain

0.55

Eigen_PC

Uncertain

0.54

FATHMM_MKL

Uncertain

0.85

LIST_S2

Pathogenic

0.97

.;.;D;.;D;D;.

M_CAP

Benign

0.015

MetaRNN

Benign

0.42

T;T;T;T;T;T;T

MetaSVM

Benign

-0.99

MutationAssessor

Uncertain

2.5

M;M;M;M;.;M;M

PrimateAI

Uncertain

0.49

PROVEAN

Uncertain

-3.8

D;.;.;D;.;D;D

REVEL

Benign

0.26

Sift

Benign

0.040

D;.;.;D;.;D;D

Sift4G

Uncertain

0.0070

D;D;D;D;D;D;D

Polyphen

1.0

D;D;D;D;.;D;D

Vest4

0.43

MVP

0.34

MPC

1.2

ClinPred

0.92

GERP RS

4.2

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.67

gMVP

0.87

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.060

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