20-17969924-C-A
Position:
Variant summary
Our verdict is Likely pathogenic. Variant got 8 ACMG points: 8P and 0B. PVS1_StrongPM2PP5_Moderate
The NM_052865.4(MGME1):c.65C>A(p.Ser22*) variant causes a stop gained change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,768 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (★).
Frequency
Genomes: not found (cov: 33)
Exomes 𝑓: 6.8e-7 ( 0 hom. )
Consequence
MGME1
NM_052865.4 stop_gained
NM_052865.4 stop_gained
Scores
1
2
4
Clinical Significance
Conservation
PhyloP100: 0.570
Genes affected
MGME1 (HGNC:16205): (mitochondrial genome maintenance exonuclease 1) The protein encoded by this gene is a nuclear-encoded mitochondrial protein necessary for the maintenance of mitochondrial genome synthesis. The encoded protein is a RecB-type exonuclease and primarily cleaves single-stranded DNA. Defects in this gene have been associated with mitochondrial DNA depletion syndrome-11. Three transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2015]
Genome browser will be placed here
ACMG classification
Classification made for transcript
Verdict is Likely_pathogenic. Variant got 8 ACMG points.
PVS1
Loss of function variant, product does not undergo nonsense mediated mRNA decay. Variant located near the start codon (<100nt), not predicted to undergo nonsense mediated mRNA decay. There are 4 pathogenic variants in the truncated region.
PM2
Very rare variant in population databases, with high coverage;
PP5
Variant 20-17969924-C-A is Pathogenic according to our data. Variant chr20-17969924-C-A is described in ClinVar as [Pathogenic]. Clinvar id is 2165318.Status of the report is criteria_provided_single_submitter, 1 stars.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | Protein | UniProt |
---|---|---|---|---|---|---|---|---|
MGME1 | NM_052865.4 | c.65C>A | p.Ser22* | stop_gained | 2/5 | ENST00000377710.10 | NP_443097.1 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Protein | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|---|
MGME1 | ENST00000377710.10 | c.65C>A | p.Ser22* | stop_gained | 2/5 | 1 | NM_052865.4 | ENSP00000366939.5 | ||
MGME1 | ENST00000377709.1 | c.65C>A | p.Ser22* | stop_gained | 2/5 | 2 | ENSP00000366938.1 | |||
MGME1 | ENST00000377704.4 | c.65C>A | p.Ser22* | stop_gained | 2/3 | 3 | ENSP00000366933.4 | |||
OVOL2 | ENST00000486776.5 | n.492-12887G>T | intron_variant | 3 |
Frequencies
GnomAD3 genomes Cov.: 33
GnomAD3 genomes
Cov.:
33
GnomAD4 exome AF: 6.84e-7 AC: 1AN: 1461768Hom.: 0 Cov.: 32 AF XY: 0.00000138 AC XY: 1AN XY: 727174
GnomAD4 exome
AF:
AC:
1
AN:
1461768
Hom.:
Cov.:
32
AF XY:
AC XY:
1
AN XY:
727174
Gnomad4 AFR exome
AF:
Gnomad4 AMR exome
AF:
Gnomad4 ASJ exome
AF:
Gnomad4 EAS exome
AF:
Gnomad4 SAS exome
AF:
Gnomad4 FIN exome
AF:
Gnomad4 NFE exome
AF:
Gnomad4 OTH exome
AF:
GnomAD4 genome Cov.: 33
GnomAD4 genome
Cov.:
33
Bravo
AF:
ExAC
AF:
AC:
1
ClinVar
Significance: Pathogenic
Submissions summary: Pathogenic:1
Revision: criteria provided, single submitter
LINK: link
Submissions by phenotype
not provided Pathogenic:1
Pathogenic, criteria provided, single submitter | clinical testing | Labcorp Genetics (formerly Invitae), Labcorp | Feb 06, 2023 | This sequence change creates a premature translational stop signal (p.Ser22*) in the MGME1 gene. It is expected to result in an absent or disrupted protein product. Loss-of-function variants in MGME1 are known to be pathogenic (PMID: 23313956). This variant is present in population databases (rs761126029, gnomAD 0.0009%). This variant has not been reported in the literature in individuals affected with MGME1-related conditions. For these reasons, this variant has been classified as Pathogenic. - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
BayesDel_addAF
Pathogenic
D
BayesDel_noAF
Uncertain
CADD
Pathogenic
DANN
Uncertain
Eigen
Benign
Eigen_PC
Benign
FATHMM_MKL
Benign
N
Vest4
GERP RS
Splicing
Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at