chr11-61770274-TGA-T

Variant names:

• chr11-61770274-TGA-T
• NM_001127392.3:c.492_493delGA

Variant summary

Our verdict is Pathogenic. The variant received 12 ACMG points: 12P and 0B. PVS1 PM2 PP5_Moderate

The NM_001127392.3(MYRF):​c.492_493delGA​(p.Glu164AspfsTer63) variant causes a frameshift change. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Pathogenic (★). Variant results in nonsense mediated mRNA decay.

• Frequency: Genomes: not found (cov: 31)
• Consequence: MYRF NM_001127392.3 frameshift
• Clinical Significance: Pathogenic criteria provided, single submitter P:1
• Conservation: PhyloP100: 6.91
• Publications: 0 publications found

Genes affected

MYRF (HGNC:1181): (myelin regulatory factor) This gene encodes a transcription factor that is required for central nervous system myelination and may regulate oligodendrocyte differentiation. It is thought to act by increasing the expression of genes that effect myelin production but may also directly promote myelin gene expression. Loss of a similar gene in mouse models results in severe demyelination. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Nov 2014]

TMEM258 (HGNC:1164): (transmembrane protein 258) Involved in protein N-linked glycosylation. Located in endoplasmic reticulum. Part of oligosaccharyltransferase I complex. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Our verdict: Pathogenic. The variant received 12 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
• PP5: Variant 11-61770274-TGA-T is Pathogenic according to our data. Variant chr11-61770274-TGA-T is described in ClinVar as Pathogenic. ClinVar VariationId is 2633042.Status of the report is criteria_provided_single_submitter, 1 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001127392.3. 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
	MYRF	NM_001127392.3	MANE Select	c.492_493delGA	p.Glu164AspfsTer63	frameshift	Exon 5 of 27	NP_001120864.1	Q9Y2G1-1
	MYRF	NM_013279.4		c.465_466delGA	p.Glu155AspfsTer63	frameshift	Exon 5 of 26	NP_037411.1	Q9Y2G1-2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MYRF	ENST00000278836.10	TSL:1 MANE Select	c.492_493delGA	p.Glu164AspfsTer63	frameshift	Exon 5 of 27	ENSP00000278836.4	Q9Y2G1-1
	MYRF	ENST00000265460.9	TSL:1	c.465_466delGA	p.Glu155AspfsTer63	frameshift	Exon 5 of 26	ENSP00000265460.5	Q9Y2G1-2
	MYRF	ENST00000856811.1		c.492_493delGA	p.Glu164AspfsTer63	frameshift	Exon 5 of 27	ENSP00000526870.1

Frequencies

GnomAD3 genomes Cov.: 31

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome Cov.: 31

ClinVar

ClinVar submissions as Germline

Significance: Pathogenic

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
1	-	-	MYRF-related disorder (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		6.9

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.11		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: chr11-61537746;