Variant chr8-13021088-C-A details in Genebe, Genetics Data Aggregator

Variant summary

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

The NM_020844.3(TRMT9B):c.409C>A(p.Leu137Met) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000385 in 1,608,714 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/19 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00012 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000030 ( 0 hom. )

Consequence

TRMT9B
NM_020844.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.75

Variant links:

Genes affected

TRMT9B (HGNC:26725): (tRNA methyltransferase 9B (putative)) Enables tRNA methyltransferase activity. Predicted to be involved in tRNA wobble uridine modification. Predicted to be active in cytoplasm and nucleus. [provided by Alliance of Genome Resources, Apr 2022]

TRMT9B links:

LOC124901889 (HGNC:):

LOC124901889 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=0.018057793).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
TRMT9B	NM_020844.3 linkuse as main transcript	c.409C>A	p.Leu137Met	missense_variant	5/5	ENST00000524591.7	NP_065895.2
LOC124901889	XR_007060825.1 linkuse as main transcript	n.369-6626G>T		intron_variant, non_coding_transcript_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
TRMT9B	ENST00000524591.7 linkuse as main transcript	c.409C>A	p.Leu137Met	missense_variant	5/5	5	NM_020844.3	ENSP00000432695	P1	Q9P272-1
TRMT9B	ENST00000529978.1 linkuse as main transcript	n.926C>A		non_coding_transcript_exon_variant	2/2	1
TRMT9B	ENST00000447063.6 linkuse as main transcript	c.264+8295C>A		intron_variant		2		ENSP00000443288
TRMT9B	ENST00000529706.1 linkuse as main transcript	n.2613C>A		non_coding_transcript_exon_variant	2/2	2

Frequencies

GnomAD3 genomes

AF:

0.000125

AC:

AN:

152180

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00111

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:

0.000478

GnomAD3 exomes

AF:

0.000150

AC:

AN:

239374

Hom.:

AF XY:

0.000131

AC XY:

AN XY:

129838

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00109

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:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000295

AC:

AN:

1456534

Hom.:

Cov.:

AF XY:

0.0000304

AC XY:

AN XY:

724054

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000964

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

AF:

0.000125

AC:

AN:

152180

Hom.:

Cov.:

AF XY:

0.000134

AC XY:

AN XY:

74354

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.00111

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:

0.000478

Bravo

AF:

0.000159

ExAC

AF:

0.0000994

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jun 16, 2024

The c.409C>A (p.L137M) alteration is located in exon 5 (coding exon 3) of the KIAA1456 gene. This alteration results from a C to A substitution at nucleotide position 409, causing the leucine (L) at amino acid position 137 to be replaced by a methionine (M). 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

-0.41

BayesDel_noAF

Benign

-0.42

CADD

Benign

DANN

Uncertain

0.98

DEOGEN2

Benign

0.022

Eigen

Benign

-0.23

Eigen_PC

Benign

-0.18

FATHMM_MKL

Benign

0.66

LIST_S2

Benign

0.80

M_CAP

Benign

0.016

MetaRNN

Benign

0.018

MetaSVM

Benign

-1.1

MutationTaster

Benign

0.93

D;D

PrimateAI

Uncertain

0.53

PROVEAN

Benign

-0.88

REVEL

Benign

0.062

Sift

Benign

0.20

Sift4G

Benign

0.21

Polyphen

0.36

Vest4

0.18

MutPred

0.62

Gain of MoRF binding (P = 0.0673);

MVP

0.040

ClinPred

0.13

GERP RS

0.19

Varity_R

0.099

gMVP

0.26

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