chrX-150568649-G-T

Position:

• chrX-150568649-G-T

Variant summary

Our verdict is Benign. Variant got -12 ACMG points: 0P and 12B. BP4_Moderate BP6_Moderate BS1 BS2

The NM_000252.3(MTM1):​c.-24G>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 0.000301 in 113,008 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 11 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★).

• Frequency:
  • Genomes: 𝑓 0.00030 (0 hom., 11 hem., cov: 26)
  • Exomes 𝑓: 0.0 (0 hom. 0 hem.)
  • Failed GnomAD Quality Control
• Consequence: MTM1 NM_000252.3 5_prime_UTR
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: 0.235

Genes affected

MTM1 (HGNC:7448): (myotubularin 1) This gene encodes a dual-specificity phosphatase that acts on both phosphotyrosine and phosphoserine. It is required for muscle cell differentiation and mutations in this gene have been identified as being responsible for X-linked myotubular myopathy. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Benign. Variant got -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.43).
• BP6: Variant X-150568649-G-T is Benign according to our data. Variant chrX-150568649-G-T is described in ClinVar as [Likely_benign]. Clinvar id is 389855.Status of the report is criteria_provided_single_submitter, 1 stars.
• BS1: Variant frequency is greater than expected in population nfe. gnomad4 allele frequency = 0.000301 (34/113008) while in subpopulation NFE AF= 0.000602 (32/53195). AF 95% confidence interval is 0.000438. There are 0 homozygotes in gnomad4. There are 11 alleles in male gnomad4 subpopulation. Median coverage is 26. This position pass quality control queck.
• BS2: High Hemizygotes in GnomAd4 at 11 XL gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
MTM1	NM_000252.3	c.-24G>T		5_prime_UTR_variant	1/15	ENST00000370396.7	NP_000243.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
MTM1	ENST00000370396	c.-24G>T		5_prime_UTR_variant	1/15	1	NM_000252.3	ENSP00000359423.3

Frequencies

GnomAD3 genomes AF: 0.000301 AC: 34 AN: 113008 Hom.: 0 Cov.: 26 AF XY: 0.000312 AC XY: 11 AN XY: 35216

Gnomad AFR AF: 0.0000320

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: 0.000602

Gnomad OTH AF: 0.000657

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 57 Hom.: 0 Cov.: 0 AF XY: 0.00 AC XY: 0 AN XY: 21

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome AF: 0.000301 AC: 34 AN: 113008 Hom.: 0 Cov.: 26 AF XY: 0.000312 AC XY: 11 AN XY: 35216

Gnomad4 AFR AF: 0.0000320

Gnomad4 AMR AF: 0.00

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.000602

Gnomad4 OTH AF: 0.000657

Alfa AF: 0.000108 Hom.: 0

Bravo AF: 0.000359

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Benign:1

Likely benign, criteria provided, single submitter

clinical testing

GeneDx

May 10, 2018

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.43
CADD	Benign	14
DANN	Benign	0.88

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

Other links and lift over

dbSNP: rs1008075753; hg19: chrX-149737099;