Variant 1-236795360-C-T details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Likely benign. Variant got -5 ACMG points: 0P and 5B. BP4_StrongBS1_Supporting

The NM_000254.3(MTR):c.-344C>T variant causes a 5 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00102 in 1,358,146 control chromosomes in the GnomAD database, including 5 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00054 ( 0 hom., cov: 33)

Exomes 𝑓: 0.0011 ( 5 hom. )

Consequence

MTR
NM_000254.3 5_prime_UTR

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -0.0510

Variant links:

Genes affected

MTR (HGNC:7468): (5-methyltetrahydrofolate-homocysteine methyltransferase) This gene encodes the 5-methyltetrahydrofolate-homocysteine methyltransferase. This enzyme, also known as cobalamin-dependent methionine synthase, catalyzes the final step in methionine biosynthesis. Mutations in MTR have been identified as the underlying cause of methylcobalamin deficiency complementation group G. Alternatively spliced transcript variants encoding distinct isoforms have been found for this gene. [provided by RefSeq, May 2014]

MTR links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -5 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.75).

BS1

Variant frequency is greater than expected in population sas. gnomad4 allele frequency = 0.000545 (83/152342) while in subpopulation SAS AF= 0.00228 (11/4834). AF 95% confidence interval is 0.00128. There are 0 homozygotes in gnomad4. There are 40 alleles in male gnomad4 subpopulation. Median coverage is 33. This position pass quality control queck. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
MTR	NM_000254.3 linkuse as main transcript	c.-344C>T		5_prime_UTR_variant	1/33	ENST00000366577.10

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
MTR	ENST00000366577.10 linkuse as main transcript	c.-344C>T		5_prime_UTR_variant	1/33	1	NM_000254.3	P1	Q99707-1

Frequencies

GnomAD3 genomes

AF:

0.000545

AC:

AN:

152224

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000145

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000262

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00227

Gnomad FIN

AF:

0.000283

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000867

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000706

AC:

AN:

124600

Hom.:

AF XY:

0.000765

AC XY:

AN XY:

67930

show subpopulations

Gnomad AFR exome

AF:

0.000164

Gnomad AMR exome

AF:

0.000344

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00141

Gnomad FIN exome

AF:

0.000201

Gnomad NFE exome

AF:

0.000969

Gnomad OTH exome

AF:

0.000526

GnomAD4 exome

AF:

0.00108

AC:

1299

AN:

1205804

Hom.:

Cov.:

AF XY:

0.00110

AC XY:

651

AN XY:

590370

show subpopulations

Gnomad4 AFR exome

AF:

0.0000738

Gnomad4 AMR exome

AF:

0.000272

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00186

Gnomad4 FIN exome

AF:

0.000229

Gnomad4 NFE exome

AF:

0.00116

Gnomad4 OTH exome

AF:

0.000537

GnomAD4 genome

AF:

0.000545

AC:

AN:

152342

Hom.:

Cov.:

AF XY:

0.000537

AC XY:

AN XY:

74498

show subpopulations

Gnomad4 AFR

AF:

0.000144

Gnomad4 AMR

AF:

0.000261

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00228

Gnomad4 FIN

AF:

0.000283

Gnomad4 NFE

AF:

0.000867

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000323

Hom.:

Bravo

AF:

0.000431

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Disorders of Intracellular Cobalamin Metabolism

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Apr 27, 2017

This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). No publications were found based on this search. Allele frequency data from public databases did not allow this variant to be ruled in or out of causing disease. Therefore, this variant is classified as a variant of unknown significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.75

Cadd

Benign

6.8

Dann

Benign

0.76

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