Variant 1-236795593-C-T details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_000254.3(MTR):c.-111C>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 0.00143 in 1,596,028 control chromosomes in the GnomAD database, including 32 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.0077 ( 15 hom., cov: 33)

Exomes 𝑓: 0.00077 ( 17 hom. )

Consequence

MTR
NM_000254.3 5_prime_UTR

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:3

Conservation

PhyloP100: 0.417

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 Benign. Variant got -20 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.76).

BP6

Variant 1-236795593-C-T is Benign according to our data. Variant chr1-236795593-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 296543.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS1

Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.00769 (1171/152362) while in subpopulation AFR AF= 0.0267 (1112/41590). AF 95% confidence interval is 0.0254. There are 15 homozygotes in gnomad4. There are 533 alleles in male gnomad4 subpopulation. Median coverage is 33. This position pass quality control queck.

BS2

High Homozygotes in GnomAd4 at 15 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
MTR	NM_000254.3 linkuse as main transcript	c.-111C>T		5_prime_UTR_variant	1/33	ENST00000366577.10	NP_000245.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
MTR	ENST00000366577.10 linkuse as main transcript	c.-111C>T		5_prime_UTR_variant	1/33	1	NM_000254.3	ENSP00000355536	P1	Q99707-1

Frequencies

GnomAD3 genomes

AF:

0.00759

AC:

1156

AN:

152244

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0265

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00255

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000882

Gnomad OTH

AF:

0.00621

GnomAD3 exomes

AF:

0.00190

AC:

428

AN:

224778

Hom.:

AF XY:

0.00145

AC XY:

179

AN XY:

123268

show subpopulations

Gnomad AFR exome

AF:

0.0273

Gnomad AMR exome

AF:

0.00118

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000340

Gnomad FIN exome

AF:

0.000131

Gnomad NFE exome

AF:

0.0000887

Gnomad OTH exome

AF:

0.000707

GnomAD4 exome

AF:

0.000774

AC:

1118

AN:

1443666

Hom.:

Cov.:

AF XY:

0.000685

AC XY:

492

AN XY:

718064

show subpopulations

Gnomad4 AFR exome

AF:

0.0263

Gnomad4 AMR exome

AF:

0.00127

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000353

Gnomad4 FIN exome

AF:

0.0000672

Gnomad4 NFE exome

AF:

0.0000623

Gnomad4 OTH exome

AF:

0.00175

GnomAD4 genome

AF:

0.00769

AC:

1171

AN:

152362

Hom.:

Cov.:

AF XY:

0.00715

AC XY:

533

AN XY:

74494

show subpopulations

Gnomad4 AFR

AF:

0.0267

Gnomad4 AMR

AF:

0.00255

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000207

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000882

Gnomad4 OTH

AF:

0.00614

Alfa

AF:

0.00423

Hom.:

Bravo

AF:

0.00882

Asia WGS

AF:

0.00173

AC:

AN:

3478

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:3

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Benign:2

Likely benign, criteria provided, single submitter	clinical testing	GeneDx	May 13, 2021	- -
Likely benign, criteria provided, single submitter	not provided	Breakthrough Genomics, Breakthrough Genomics	-	- -

Disorders of Intracellular Cobalamin Metabolism

Benign:1

Benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 13, 2018

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.76

CADD

Benign

8.2

DANN

Benign

0.91

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