rs863224842
Variant summary
Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2PP5_Moderate
The NM_014874.4(MFN2):c.708+11_708+13del variant causes a splice donor 5th base, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000446 in 1,613,598 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Likely pathogenic (★).
Frequency
Genomes: 𝑓 0.000046 ( 0 hom., cov: 32)
Exomes 𝑓: 0.000044 ( 0 hom. )
Consequence
MFN2
NM_014874.4 splice_donor_5th_base, intron
NM_014874.4 splice_donor_5th_base, intron
Scores
Not classified
Clinical Significance
Conservation
PhyloP100: 0.157
Genes affected
MFN2 (HGNC:16877): (mitofusin 2) This gene encodes a mitochondrial membrane protein that participates in mitochondrial fusion and contributes to the maintenance and operation of the mitochondrial network. This protein is involved in the regulation of vascular smooth muscle cell proliferation, and it may play a role in the pathophysiology of obesity. Mutations in this gene cause Charcot-Marie-Tooth disease type 2A2, and hereditary motor and sensory neuropathy VI, which are both disorders of the peripheral nervous system. Defects in this gene have also been associated with early-onset stroke. Two transcript variants encoding the same protein have been identified. [provided by RefSeq, Jul 2008]
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ACMG classification
Classification made for transcript
Verdict is Uncertain_significance. Variant got 4 ACMG points.
PM2
?
Very rare variant in population databases, with high coverage;
PP5
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Variant 1-11998882-ACTC-A is Pathogenic according to our data. Variant chr1-11998882-ACTC-A is described in ClinVar as [Likely_pathogenic]. Clinvar id is 216874.Status of the report is criteria_provided_single_submitter, 1 stars.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
MFN2 | NM_014874.4 | c.708+11_708+13del | splice_donor_5th_base_variant, intron_variant | ENST00000235329.10 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
MFN2 | ENST00000235329.10 | c.708+11_708+13del | splice_donor_5th_base_variant, intron_variant | 1 | NM_014874.4 | P1 |
Frequencies
GnomAD3 genomes ? AF: 0.0000461 AC: 7AN: 151812Hom.: 0 Cov.: 32
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GnomAD3 exomes AF: 0.0000159 AC: 4AN: 251478Hom.: 0 AF XY: 0.0000221 AC XY: 3AN XY: 135910
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GnomAD4 exome AF: 0.0000445 AC: 65AN: 1461786Hom.: 0 AF XY: 0.0000440 AC XY: 32AN XY: 727198
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GnomAD4 genome ? AF: 0.0000461 AC: 7AN: 151812Hom.: 0 Cov.: 32 AF XY: 0.0000540 AC XY: 4AN XY: 74120
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ClinVar
Significance: Likely pathogenic
Submissions summary: Pathogenic:1Uncertain:1
Revision: criteria provided, single submitter
LINK: link
Submissions by phenotype
Charcot-Marie-Tooth disease type 2 Pathogenic:1
Likely pathogenic, criteria provided, single submitter | clinical testing | Invitae | Jun 30, 2023 | This sequence change falls in intron 7 of the MFN2 gene. It does not directly change the encoded amino acid sequence of the MFN2 protein. This variant is present in population databases (rs767519297, gnomAD 0.008%). In summary, the currently available evidence indicates that the variant is pathogenic, but additional data are needed to prove that conclusively. Therefore, this variant has been classified as Likely Pathogenic. Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant is not likely to affect RNA splicing. ClinVar contains an entry for this variant (Variation ID: 216874). This variant has been observed in individual(s) with clinical features of MFN2-related conditions (Invitae). In at least one individual the data is consistent with being in trans (on the opposite chromosome) from a pathogenic variant. It has also been observed to segregate with disease in related individuals. - |
Charcot-Marie-Tooth disease Uncertain:1
Uncertain significance, no assertion criteria provided | research | Genesis Genome Database | Aug 14, 2019 | - - |
Computational scores
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SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at