20-17975870-A-G

Variant summary

Our verdict is Likely pathogenic. Variant got 7 ACMG points: 7P and 0B. PM2PP3_StrongPP5

The NM_052865.4(MGME1):ā€‹c.698A>Gā€‹(p.Tyr233Cys) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000958 in 1,461,784 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 (no stars).

Frequency

Genomes: not found (cov: 32)
Exomes š‘“: 0.0000096 ( 0 hom. )

Consequence

MGME1
NM_052865.4 missense

Scores

10
7
2

Clinical Significance

Pathogenic no assertion criteria provided P:1

Conservation

PhyloP100: 8.74
Variant links:
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]

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ACMG classification

Classification made for transcript

Verdict is Likely_pathogenic. Variant got 7 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
PP3
MetaRNN computational evidence supports a deleterious effect, 0.977
PP5
Variant 20-17975870-A-G is Pathogenic according to our data. Variant chr20-17975870-A-G is described in ClinVar as [Pathogenic]. Clinvar id is 40052.Status of the report is no_assertion_criteria_provided, 0 stars.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE Protein UniProt
MGME1NM_052865.4 linkuse as main transcriptc.698A>G p.Tyr233Cys missense_variant 3/5 ENST00000377710.10 NP_443097.1 Q9BQP7

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Protein Appris UniProt
MGME1ENST00000377710.10 linkuse as main transcriptc.698A>G p.Tyr233Cys missense_variant 3/51 NM_052865.4 ENSP00000366939.5 Q9BQP7

Frequencies

GnomAD3 genomes
Cov.:
32
GnomAD3 exomes
AF:
0.0000398
AC:
10
AN:
251444
Hom.:
0
AF XY:
0.0000147
AC XY:
2
AN XY:
135898
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.000260
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad SAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.00000879
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.00000958
AC:
14
AN:
1461784
Hom.:
0
Cov.:
32
AF XY:
0.00000413
AC XY:
3
AN XY:
727192
show subpopulations
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.000179
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.0000252
Gnomad4 SAS exome
AF:
0.0000232
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.00000270
Gnomad4 OTH exome
AF:
0.00
GnomAD4 genome
Cov.:
32
Alfa
AF:
0.0000680
Hom.:
0
Bravo
AF:
0.00000378
ExAC
AF:
0.0000165
AC:
2

ClinVar

Significance: Pathogenic
Submissions summary: Pathogenic:1
Revision: no assertion criteria provided
LINK: link

Submissions by phenotype

Mitochondrial DNA depletion syndrome 11 Pathogenic:1
Pathogenic, no assertion criteria providedliterature onlyOMIMFeb 01, 2013- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
0.82
BayesDel_addAF
Pathogenic
0.21
D
BayesDel_noAF
Pathogenic
0.35
CADD
Pathogenic
28
DANN
Benign
0.97
DEOGEN2
Uncertain
0.67
D;D
Eigen
Uncertain
0.64
Eigen_PC
Uncertain
0.50
FATHMM_MKL
Pathogenic
0.99
D
LIST_S2
Uncertain
0.95
D;D
M_CAP
Pathogenic
0.33
D
MetaRNN
Pathogenic
0.98
D;D
MetaSVM
Uncertain
0.35
D
MutationAssessor
Pathogenic
3.3
M;.
PrimateAI
Uncertain
0.60
T
PROVEAN
Pathogenic
-8.4
D;D
REVEL
Pathogenic
0.77
Sift
Pathogenic
0.0
D;D
Sift4G
Uncertain
0.0080
D;D
Polyphen
1.0
D;.
Vest4
0.98
MutPred
0.76
Loss of helix (P = 0.1299);.;
MVP
0.84
MPC
0.52
ClinPred
0.97
D
GERP RS
5.5
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.1
Varity_R
0.93
gMVP
0.89

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

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Other links and lift over

dbSNP: rs587776944; hg19: chr20-17956513; API