1-11130747-C-A

Variant names:

• chr1-11130747-C-A
• rs863225264
• NM_004958.4:c.5395G>T

Variant summary

Our verdict is Pathogenic. The variant received 10 ACMG points: 10P and 0B. PVS1 PM2

The NM_004958.4(MTOR):​c.5395G>T​(p.Glu1799*) variant causes a stop gained change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Variant results in nonsense mediated mRNA decay.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: MTOR NM_004958.4 stop_gained
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 7.53
• Publications: 0 publications found

Genes affected

MTOR (HGNC:3942): (mechanistic target of rapamycin kinase) The protein encoded by this gene belongs to a family of phosphatidylinositol kinase-related kinases. These kinases mediate cellular responses to stresses such as DNA damage and nutrient deprivation. This kinase is a component of two distinct complexes, mTORC1, which controls protein synthesis, cell growth and proliferation, and mTORC2, which is a regulator of the actin cytoskeleton, and promotes cell survival and cell cycle progression. This protein acts as the target for the cell-cycle arrest and immunosuppressive effects of the FKBP12-rapamycin complex. Inhibitors of mTOR are used in organ transplants as immunosuppressants, and are being evaluated for their therapeutic potential in SARS-CoV-2 infections. Mutations in this gene are associated with Smith-Kingsmore syndrome and somatic focal cortical dysplasia type II. The ANGPTL7 gene is located in an intron of this gene. [provided by RefSeq, Aug 2020]

MTOR Gene-Disease associations (from GenCC):

• macrocephaly-intellectual disability-neurodevelopmental disorder-small thorax syndrome

  Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Illumina, Orphanet, Labcorp Genetics (formerly Invitae), G2P
• overgrowth syndrome and/or cerebral malformations due to abnormalities in MTOR pathway genes

  Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen

ACMG classification

Our verdict: Pathogenic. The variant received 10 ACMG points.

• PVS1: Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.
• PM2: Very rare variant in population databases, with high coverage

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_004958.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MTOR	NM_004958.4	MANE Select	c.5395G>T	p.Glu1799*	stop_gained	Exon 39 of 58	NP_004949.1
	MTOR	NM_001386500.1		c.5395G>T	p.Glu1799*	stop_gained	Exon 39 of 58	NP_001373429.1
	MTOR	NM_001386501.1		c.4147G>T	p.Glu1383*	stop_gained	Exon 38 of 57	NP_001373430.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MTOR	ENST00000361445.9	TSL:1 MANE Select	c.5395G>T	p.Glu1799*	stop_gained	Exon 39 of 58	ENSP00000354558.4
	MTOR	ENST00000934315.1		c.5449G>T	p.Glu1817*	stop_gained	Exon 39 of 58	ENSP00000604374.1
	MTOR	ENST00000934312.1		c.5416G>T	p.Glu1806*	stop_gained	Exon 39 of 58	ENSP00000604371.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 1428360 Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0 AN XY: 707194

African (AFR) AF: 0.00 AC: 0 AN: 33052

American (AMR) AF: 0.00 AC: 0 AN: 38650

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25450

East Asian (EAS) AF: 0.00 AC: 0 AN: 38618

South Asian (SAS) AF: 0.00 AC: 0 AN: 81934

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 51204

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5722

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1094538

Other (OTH) AF: 0.00 AC: 0 AN: 59192

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Pathogenic	0.62	D
BayesDel_noAF	Pathogenic	0.66
CADD	Pathogenic	43
DANN	Uncertain	1.0
Eigen	Pathogenic	1.1
Eigen_PC	Pathogenic	1.0
FATHMM_MKL	Pathogenic	0.99	D
PhyloP100		7.5
Vest4		0.77
GERP RS		5.5
Mutation Taster		=1/199	disease causing (fs/PTC)

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.050		Details are displayed if max score is > 0.2

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

Other links and lift over

dbSNP: rs863225264; hg19: chr1-11190804;