Genetic Variant NM_152307.3:c.796C>T (chr14-103534747-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_152307.3(TRMT61A):c.796C>T(p.Arg266Cys) variant causes a missense change. The variant allele was found at a frequency of 0.0000314 in 1,592,044 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. R266H) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000092 ( 0 hom., cov: 34)

Exomes 𝑓: 0.000025 ( 0 hom. )

Consequence

TRMT61A
NM_152307.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 5.46

Variant links:

Genes affected

TRMT61A (HGNC:23790): (tRNA methyltransferase 61A) Enables mRNA (adenine-N1-)-methyltransferase activity. Involved in mRNA methylation. Predicted to be located in nucleoplasm. Predicted to be part of tRNA (m1A) methyltransferase complex. Predicted to be active in nucleus. [provided by Alliance of Genome Resources, Apr 2022]

TRMT61A 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=0.30496126).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TRMT61A	NM_152307.3 link	c.796C>T	p.Arg266Cys	missense_variant	Exon 4 of 4	ENST00000389749.9	NP_689520.2	Q96FX7A0A024R6Q2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
TRMT61A	ENST00000389749.9 link	c.796C>T	p.Arg266Cys	missense_variant	Exon 4 of 4	1	NM_152307.3	ENSP00000374399.4		Q96FX7
TRMT61A	ENST00000299202.4 link	c.499C>T	p.Arg167Cys	missense_variant	Exon 3 of 3	1		ENSP00000299202.4		H0Y2Q1

Frequencies

GnomAD3 genomes

AF:

0.0000920

AC:

AN:

152220

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000589

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000441

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000285

AC:

AN:

210720

Hom.:

AF XY:

0.0000429

AC XY:

AN XY:

116422

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000624

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:

0.0000426

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000250

AC:

AN:

1439824

Hom.:

Cov.:

AF XY:

0.0000266

AC XY:

AN XY:

715340

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000232

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000256

Gnomad4 SAS exome

AF:

0.0000355

Gnomad4 FIN exome

AF:

0.0000227

Gnomad4 NFE exome

AF:

0.0000272

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000920

AC:

AN:

152220

Hom.:

Cov.:

AF XY:

0.000161

AC XY:

AN XY:

74364

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.000589

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000207

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000441

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000851

Hom.:

Bravo

AF:

0.0000718

ExAC

AF:

0.00000834

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jan 23, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.796C>T (p.R266C) alteration is located in exon 4 (coding exon 3) of the TRMT61A gene. This alteration results from a C to T substitution at nucleotide position 796, causing the arginine (R) at amino acid position 266 to be replaced by a cysteine (C). 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

0.15

BayesDel_addAF

Benign

-0.25

BayesDel_noAF

Benign

-0.42

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Benign

0.081

Eigen

Uncertain

0.36

Eigen_PC

Uncertain

0.29

FATHMM_MKL

Uncertain

0.92

LIST_S2

Uncertain

0.90

M_CAP

Uncertain

0.15

MetaRNN

Benign

0.30

MetaSVM

Benign

-0.81

MutationAssessor

Benign

1.9

PrimateAI

Uncertain

0.67

PROVEAN

Benign

-1.6

REVEL

Benign

0.22

Sift

Benign

0.052

Sift4G

Uncertain

0.053

Polyphen

1.0

Vest4

0.16

MutPred

0.60

Gain of catalytic residue at F265 (P = 0);

MVP

0.64

MPC

1.5

ClinPred

0.56

GERP RS

3.5

Varity_R

0.45

gMVP

0.68

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