8-13012719-C-G

Variant names:

• chr8-13012719-C-G
• rs1306975679
• NM_020844.3:c.190C>G

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_020844.3(TRMT9B):​c.190C>G​(p.Gln64Glu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000372 in 1,613,814 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict 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. Q64R) has been classified as Uncertain significance.

• Frequency:
  • Genomes: 𝑓 0.0000066 (0 hom., cov: 33)
  • Exomes 𝑓: 0.0000034 (0 hom.)
• Consequence: TRMT9B NM_020844.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 2.58
• Publications: 0 publications found

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]

LOC124901889 (HGNC:):

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.11334488).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_020844.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TRMT9B	NM_020844.3	MANE Select	c.190C>G	p.Gln64Glu	missense	Exon 4 of 5	NP_065895.2	Q9P272-1
	TRMT9B	NM_001099677.1		c.-125C>G		5_prime_UTR	Exon 1 of 2	NP_001093147.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TRMT9B	ENST00000524591.7	TSL:5 MANE Select	c.190C>G	p.Gln64Glu	missense	Exon 4 of 5	ENSP00000432695.1	Q9P272-1
	TRMT9B	ENST00000529978.1	TSL:1	n.707C>G		non_coding_transcript_exon	Exon 1 of 2
	TRMT9B	ENST00000855797.1		c.190C>G	p.Gln64Glu	missense	Exon 4 of 5	ENSP00000525856.1

Frequencies

GnomAD3 genomes AF: 0.00000657 AC: 1 AN: 152178 Hom.: 0 Cov.: 33

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

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: 0.0000147

Gnomad OTH AF: 0.00

GnomAD4 exome AF: 0.00000342 AC: 5 AN: 1461636 Hom.: 0 Cov.: 32 AF XY: 0.00000275 AC XY: 2 AN XY: 727094

African (AFR) AF: 0.00 AC: 0 AN: 33480

American (AMR) AF: 0.00 AC: 0 AN: 44722

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26132

East Asian (EAS) AF: 0.00 AC: 0 AN: 39694

South Asian (SAS) AF: 0.00 AC: 0 AN: 86250

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53402

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5766

European-Non Finnish (NFE) AF: 0.00000450 AC: 5 AN: 1111820

Other (OTH) AF: 0.00 AC: 0 AN: 60370

GnomAD4 genome AF: 0.00000657 AC: 1 AN: 152178 Hom.: 0 Cov.: 33 AF XY: 0.00 AC XY: 0 AN XY: 74344

African (AFR) AF: 0.00 AC: 0 AN: 41450

American (AMR) AF: 0.00 AC: 0 AN: 15280

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

East Asian (EAS) AF: 0.00 AC: 0 AN: 5196

South Asian (SAS) AF: 0.00 AC: 0 AN: 4830

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10602

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.0000147 AC: 1 AN: 68030

Other (OTH) AF: 0.00 AC: 0 AN: 2090

Alfa AF: 0.0000282 Hom.: 0

Bravo AF: 0.00000378

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	not specified (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.070
BayesDel_addAF	Benign	-0.24	T
BayesDel_noAF	Benign	-0.59
CADD	Benign	14
DANN	Uncertain	0.98
DEOGEN2	Benign	0.0049	T
Eigen	Benign	-0.030
Eigen_PC	Benign	0.18
FATHMM_MKL	Uncertain	0.86	D
LIST_S2	Uncertain	0.87	D
M_CAP	Benign	0.0031	T
MetaRNN	Benign	0.11	T
MetaSVM	Benign	-1.0	T
PhyloP100		2.6
PrimateAI	Benign	0.36	T
PROVEAN	Benign	0.12	N
REVEL	Benign	0.071
Sift	Benign	0.088	T
Sift4G	Benign	0.33	T
Polyphen		0.14	B
Vest4		0.32
MutPred		0.39		Gain of loop (P = 0.1069)
MVP		0.030
ClinPred		0.49	T
GERP RS		4.8
Varity_R		0.14
gMVP		0.33
Mutation Taster		=71/29	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		Details are displayed if max score is > 0.2

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

Other links and lift over

dbSNP: rs1306975679; hg19: chr8-12870228;