3-101564860-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_017819.4(TRMT10C):c.79C>T(p.His27Tyr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 14/20 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. H27R) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 31)
• Consequence: TRMT10C NM_017819.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 1.20

Genes affected

TRMT10C (HGNC:26022): (tRNA methyltransferase 10C, mitochondrial RNase P subunit) This gene encodes the precursor of a subunit of the mitochondrial ribonuclease P, which is involved in 5' processing of mitochondrial tRNAs. The encoded protein may confer RNA-binding capacity to mitochondrial ribonuclease P and may be essential for transcript processing, RNA modification, translation and mitochondrial respiration. [provided by RefSeq, Nov 2012]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.10261312).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
TRMT10C	NM_017819.4	c.79C>T	p.His27Tyr	missense_variant	2/2	ENST00000309922.7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
TRMT10C	ENST00000309922.7	c.79C>T	p.His27Tyr	missense_variant	2/2	1	NM_017819.4	P1
TRMT10C	ENST00000495642.1	c.79C>T	p.His27Tyr	missense_variant	2/2	3

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 31

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Invitae

Dec 11, 2023

This sequence change replaces histidine, which is basic and polar, with tyrosine, which is neutral and polar, at codon 27 of the TRMT10C protein (p.His27Tyr). This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with TRMT10C-related conditions. An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant is likely to be tolerated. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.075
BayesDel_addAF	Benign	-0.21	T
BayesDel_noAF	Benign	-0.54
Cadd	Benign	14
Dann	Benign	0.88
DEOGEN2	Benign	0.0056	T;.
Eigen	Benign	-0.22
Eigen_PC	Benign	-0.22
FATHMM_MKL	Benign	0.31	N
LIST_S2	Benign	0.52	T;T
M_CAP	Benign	0.0055	T
MetaRNN	Benign	0.10	T;T
MetaSVM	Benign	-1.0	T
MutationTaster	Benign	1.0	N
PrimateAI	Benign	0.31	T
PROVEAN	Benign	-0.52	N;N
REVEL	Benign	0.054
Sift	Benign	0.36	T;T
Sift4G	Benign	1.0	T;T
Polyphen		0.88	P;.
Vest4		0.21
MutPred		0.39		Gain of glycosylation at T25 (P = 0.0321);Gain of glycosylation at T25 (P = 0.0321);
MVP		0.16
MPC		0.33
ClinPred		0.45	T
GERP RS		4.0
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.044
gMVP		0.12

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.020		Details are displayed if max score is > 0.2

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

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr3-101283704;