Genetic Variant TRMT61A:p.Arg223Cys (chr14-103534618-C-T) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_152307.3(TRMT61A):c.667C>T(p.Arg223Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000492 in 1,606,848 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00019 ( 0 hom., cov: 34)

Exomes 𝑓: 0.000034 ( 0 hom. )

Consequence

TRMT61A
NM_152307.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.73

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 Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.039319783).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TRMT61A	NM_152307.3 link	c.667C>T	p.Arg223Cys	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.667C>T	p.Arg223Cys	missense_variant	Exon 4 of 4	1	NM_152307.3	ENSP00000374399.4		Q96FX7
TRMT61A	ENST00000299202.4 link	c.370C>T	p.Arg124Cys	missense_variant	Exon 3 of 3	1		ENSP00000299202.4		H0Y2Q1

Frequencies

GnomAD3 genomes

AF:

0.000190

AC:

AN:

152260

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000627

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000196

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:

0.0000578

AC:

AN:

242060

Hom.:

AF XY:

0.0000679

AC XY:

AN XY:

132626

show subpopulations

Gnomad AFR exome

AF:

0.000608

Gnomad AMR exome

AF:

0.0000293

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000562

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000185

Gnomad OTH exome

AF:

0.000170

GnomAD4 exome

AF:

0.0000344

AC:

AN:

1454470

Hom.:

Cov.:

AF XY:

0.0000332

AC XY:

AN XY:

722442

show subpopulations

Gnomad4 AFR exome

AF:

0.000600

Gnomad4 AMR exome

AF:

0.0000225

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.000228

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.0000193

Gnomad4 NFE exome

AF:

0.0000153

Gnomad4 OTH exome

AF:

0.0000334

GnomAD4 genome

AF:

0.000190

AC:

AN:

152378

Hom.:

Cov.:

AF XY:

0.000148

AC XY:

AN XY:

74516

show subpopulations

Gnomad4 AFR

AF:

0.000625

Gnomad4 AMR

AF:

0.000196

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:

0.000125

Hom.:

Bravo

AF:

0.000246

ESP6500AA

AF:

0.000486

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.0000745

AC:

EpiCase

AF:

0.00

EpiControl

AF:

0.000119

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Dec 28, 2022

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.667C>T (p.R223C) 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 667, causing the arginine (R) at amino acid position 223 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

0.11

BayesDel_addAF

Benign

-0.44

BayesDel_noAF

Benign

-0.51

CADD

Benign

9.5

DANN

Benign

0.73

DEOGEN2

Benign

0.079

Eigen

Benign

-1.3

Eigen_PC

Benign

-1.2

FATHMM_MKL

Benign

0.13

LIST_S2

Benign

0.28

M_CAP

Benign

0.014

MetaRNN

Benign

0.039

MetaSVM

Benign

-0.98

MutationAssessor

Benign

-0.26

PrimateAI

Benign

0.28

PROVEAN

Benign

-1.2

REVEL

Benign

0.094

Sift

Benign

0.19

Sift4G

Benign

0.19

Polyphen

0.0

Vest4

0.033

MVP

0.18

MPC

0.68

ClinPred

0.016

GERP RS

1.7

Varity_R

0.30

gMVP

0.55

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