11-72093528-C-T

Variant names:

Variant summary

Our verdict is Likely benign. Variant got -3 ACMG points: 2P and 5B. PM2BP4_StrongBP6

The NM_001145308.5(LRTOMT):c.-289C>T variant causes a 5 prime UTR premature start codon gain change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000719 in 1,613,880 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 Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.000059 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000073 ( 0 hom. )

Consequence

LRTOMT
NM_001145308.5 5_prime_UTR_premature_start_codon_gain

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:1

Conservation

PhyloP100: 2.83

Variant links:

Genes affected

LRTOMT (HGNC:25033): (leucine rich transmembrane and O-methyltransferase domain containing) This locus represents naturally occurring readthrough transcription between the neighboring LRRC51 (leucine-rich repeat containing 51) and TOMT (transmembrane O-methyltransferase) genes on chromosome 11. The readthrough transcript encodes a fusion protein that shares sequence identity with each individual gene product. Multiple reports implicate mutations in this gene in nonsyndromic deafness.[provided by RefSeq, Feb 2021]

LRTOMT links:

LRRC51 (HGNC:55526): (leucine rich repeat containing 51) This gene belongs to the leucine-rich repeat containing family. The encoded protein contains a transmembrane domain and two leucine-rich repeat domains. Unlike in mouse and other mammals, readthrough transcription is observed in primates between this gene and the adjacent transmembrane O-methyltransferase (Tomt) gene. Previously, this locus was annotated as a single gene representing the readthrough transcripts as well as the two different transcript species that encoded different proteins. It has since been split into three genes, including the two stand-alone genes and a third gene representing the readthrough transcription. [provided by RefSeq, Feb 2022]

LRRC51 links:

LAMTOR1 (HGNC:26068): (late endosomal/lysosomal adaptor, MAPK and MTOR activator 1) Enables GTPase binding activity. Contributes to guanyl-nucleotide exchange factor activity and molecular adaptor activity. Involved in several processes, including cholesterol homeostasis; positive regulation of TOR signaling; and regulation of cholesterol transport. Located in lysosome. Part of Ragulator complex. [provided by Alliance of Genome Resources, Apr 2022]

LAMTOR1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (BayesDel_addAF=-0.39036).

BP6

Variant 11-72093528-C-T is Benign according to our data. Variant chr11-72093528-C-T is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 228838.We mark this variant Likely_benign, oryginal submissions are: {Uncertain_significance=1, Likely_benign=1}.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
LRRC51	NM_145309.6 link	c.115C>T	p.Arg39*	stop_gained	Exon 4 of 6	ENST00000289488.8	NP_660352.1	Q96E66-1A0A024R5L6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
LRTOMT	ENST00000307198 link	c.-289C>T		5_prime_UTR_premature_start_codon_gain_variant	Exon 2 of 7	2		ENSP00000305742.7
LRRC51	ENST00000289488.8 link	c.115C>T	p.Arg39*	stop_gained	Exon 4 of 6	1	NM_145309.6	ENSP00000289488.2	Q96E66-1
LRTOMT	ENST00000307198 link	c.-289C>T		5_prime_UTR_variant	Exon 2 of 7	2		ENSP00000305742.7

Frequencies

GnomAD3 genomes

AF:

0.0000591

AC:

AN:

152216

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000393

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:

0.0000441

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000211

AC:

AN:

250986

Hom.:

AF XY:

0.000125

AC XY:

AN XY:

135682

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00136

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:

0.0000441

Gnomad OTH exome

AF:

0.000163

GnomAD4 exome

AF:

0.0000732

AC:

107

AN:

1461664

Hom.:

Cov.:

AF XY:

0.0000468

AC XY:

AN XY:

727122

show subpopulations

Gnomad4 AFR exome

AF:

0.0000597

Gnomad4 AMR exome

AF:

0.00125

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:

0.0000414

Gnomad4 OTH exome

AF:

0.0000497

GnomAD4 genome

AF:

0.0000591

AC:

AN:

152216

Hom.:

Cov.:

AF XY:

0.0000672

AC XY:

AN XY:

74362

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.000393

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000441

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000353

Hom.:

Bravo

AF:

0.0000642

ExAC

AF:

0.000173

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3478

EpiCase

AF:

0.0000545

EpiControl

AF:

0.00

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Oct 10, 2015

The p.Arg39X variant in LRTOMT (NM_001145307.1) has not been previously reported in individuals with hearing loss, but has been identified in 0.15% (16/10440) o f Latino chromosomes by the Exome Aggregation Consortium (ExAC, http://exac.broa dinstitute.org; dbSNP rs780299621). This variant leads to a premature terminatio n codon at position 39 in the NM_001145307.1 transcript of LRTOMT. However, in s everal alternate transcripts of the LRTOMT gene, the variant lies in the 5'UTR a nd its impact on these transcripts is unknown. In addition, the majority of repo rted pathogenic LRTOMT variants are located in the coding exons of these alterna te transcripts, which correspond to noncoding regions in the NM_001145307.1 tran script. Therefore, there is insufficient evidence to determine whether loss of f unction variants affecting the NM_001145307.1 transcript of LRTOMT are causative for hearing loss, and the impact of this variant on alternate transcripts of LR TOMT is not known. In summary, the clinical significance of the p.Arg39X variant in the NM_001145307.1 transcript of LRTOMT is uncertain. -

not provided

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

GeneDx

Oct 24, 2021

See Variant Classification Assertion Criteria. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_addAF

Benign

-0.39

BayesDel_noAF

Benign

-0.37

CADD

Pathogenic

DANN

Uncertain

1.0

Eigen

Benign

0.049

Eigen_PC

Benign

0.13

FATHMM_MKL

Uncertain

0.79

Vest4

0.42, 0.43, 0.42, 0.39, 0.41

GERP RS

4.6

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

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