17-31295605-T-C

Variant names:

• chr17-31295605-T-C
• NM_002544.5:c.727A>G

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_002544.5(OMG):​c.727A>G​(p.Met243Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,858 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: OMG NM_002544.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.723
• Publications: 0 publications found

Genes affected

OMG (HGNC:8135): (oligodendrocyte myelin glycoprotein) Predicted to enable identical protein binding activity. Predicted to be involved in neuron projection regeneration. Predicted to act upstream of or within regulation of collateral sprouting of intact axon in response to injury. Predicted to be located in plasma membrane. [provided by Alliance of Genome Resources, Apr 2022]

NF1 (HGNC:7765): (neurofibromin 1) This gene product appears to function as a negative regulator of the ras signal transduction pathway. Mutations in this gene have been linked to neurofibromatosis type 1, juvenile myelomonocytic leukemia and Watson syndrome. The mRNA for this gene is subject to RNA editing (CGA>UGA->Arg1306Term) resulting in premature translation termination. Alternatively spliced transcript variants encoding different isoforms have also been described for this gene. [provided by RefSeq, Jul 2008]

NF1 Gene-Disease associations (from GenCC):

• neurofibromatosis type 1

  Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: ClinGen, Labcorp Genetics (formerly Invitae), G2P, Genomics England PanelApp
• neurofibromatosis-Noonan syndrome

  Inheritance: AD Classification: STRONG, SUPPORTIVE Submitted by: Orphanet, Genomics England PanelApp
• Moyamoya disease

  Inheritance: AD Classification: MODERATE Submitted by: Genomics England PanelApp
• hereditary pheochromocytoma-paraganglioma

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• familial ovarian cancer

  Inheritance: Unknown Classification: NO_KNOWN Submitted by: ClinGen

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.09263325).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_002544.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	OMG	NM_002544.5	MANE Select	c.727A>G	p.Met243Val	missense	Exon 2 of 2	NP_002535.3
	NF1	NM_001042492.3	MANE Select	c.4836-30215T>C		intron	N/A	NP_001035957.1	P21359-1
	NF1	NM_000267.4		c.4773-30215T>C		intron	N/A	NP_000258.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	OMG	ENST00000247271.5	TSL:1 MANE Select	c.727A>G	p.Met243Val	missense	Exon 2 of 2	ENSP00000247271.4	P23515
	NF1	ENST00000358273.9	TSL:1 MANE Select	c.4836-30215T>C		intron	N/A	ENSP00000351015.4	P21359-1
	NF1	ENST00000356175.7	TSL:1	c.4773-30215T>C		intron	N/A	ENSP00000348498.3	P21359-2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461858 Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0 AN XY: 727228

African (AFR) AF: 0.00 AC: 0 AN: 33480

American (AMR) AF: 0.00 AC: 0 AN: 44722

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26134

East Asian (EAS) AF: 0.00 AC: 0 AN: 39694

South Asian (SAS) AF: 0.00 AC: 0 AN: 86256

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53414

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 8.99e-7 AC: 1 AN: 1111994

Other (OTH) AF: 0.00 AC: 0 AN: 60396

GnomAD4 genome Cov.: 32

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	not specified (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.086
BayesDel_addAF	Benign	-0.21	T
BayesDel_noAF	Benign	-0.54
CADD	Benign	16
DANN	Benign	0.88
DEOGEN2	Benign	0.079	T
Eigen	Benign	-0.65
Eigen_PC	Benign	-0.45
FATHMM_MKL	Benign	0.24	N
LIST_S2	Benign	0.56	T
M_CAP	Benign	0.0043	T
MetaRNN	Benign	0.093	T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	0.34	N
PhyloP100		0.72
PrimateAI	Benign	0.28	T
PROVEAN	Benign	-0.85	N
REVEL	Benign	0.051
Sift	Benign	0.19	T
Sift4G	Benign	0.69	T
Polyphen		0.0030	B
Vest4		0.18
MutPred		0.42		Gain of catalytic residue at M243 (P = 0.0555)
MVP		0.36
MPC		0.39
ClinPred		0.037	T
GERP RS		3.2
Varity_R		0.086
gMVP		0.29

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

Other links and lift over

hg19: chr17-29622623;