rs752402777

Positions:

• chr11-95862279-A-C
• chr11-95862279-A-G
• chr11-95862279-A-T

Variant summary

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

The NM_016156.6(MTMR2):​c.350T>G​(p.Met117Arg) variant causes a missense change. The variant allele was found at a frequency of 0.000000684 in 1,461,428 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: MTMR2 NM_016156.6 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 6.84

Genes affected

MTMR2 (HGNC:7450): (myotubularin related protein 2) This gene is a member of the myotubularin family of phosphoinositide lipid phosphatases. The encoded protein possesses phosphatase activity towards phosphatidylinositol-3-phosphate and phosphatidylinositol-3,5-bisphosphate. Mutations in this gene are a cause of Charcot-Marie-Tooth disease type 4B, an autosomal recessive demyelinating neuropathy. Alternatively spliced transcript variants encoding multiple isoforms have been found for this gene. [provided by RefSeq, Aug 2011]

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
MTMR2	NM_016156.6	c.350T>G	p.Met117Arg	missense_variant	4/15	ENST00000346299.10	NP_057240.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
MTMR2	ENST00000346299.10	c.350T>G	p.Met117Arg	missense_variant	4/15	1	NM_016156.6	ENSP00000345752	P3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD3 exomes AF: 0.00000399 AC: 1 AN: 250472 Hom.: 0 AF XY: 0.00000739 AC XY: 1 AN XY: 135406

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.0000289

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: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461428 Hom.: 0 Cov.: 31 AF XY: 0.00000138 AC XY: 1 AN XY: 727036

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.0000224

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: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

Bravo AF: 0.00000378

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.27
BayesDel_addAF	Pathogenic	0.18	D
BayesDel_noAF	Uncertain	0.10
CADD	Uncertain	24
DANN	Benign	0.96
DEOGEN2	Uncertain	0.57	D;.;.;.;D
Eigen	Benign	-0.099
Eigen_PC	Benign	0.15
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Uncertain	0.94	D;D;.;.;D
M_CAP	Benign	0.019	T
MetaRNN	Benign	0.34	T;T;T;T;T
MetaSVM	Benign	-0.44	T
MutationAssessor	Benign	0.55	N;.;.;.;.
MutationTaster	Benign	1.0	D;D;D;D
PrimateAI	Uncertain	0.72	T
PROVEAN	Benign	-1.8	N;N;N;N;N
REVEL	Uncertain	0.36
Sift	Benign	0.26	T;T;T;T;T
Sift4G	Benign	0.45	T;T;T;T;.
Polyphen		0.0	B;.;.;.;.
Vest4		0.84
MutPred		0.41		Gain of disorder (P = 0.0544);.;.;.;.;
MVP		0.84
MPC		0.50
ClinPred		0.39	T
GERP RS		5.9
Varity_R		0.52
gMVP		0.88

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.42		Details are displayed if max score is > 0.2
DS_DL_spliceai		0.42		Position offset: -7

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

Publications

LitVar

Other links and lift over

dbSNP: rs752402777; hg19: chr11-95595443;