Variant chr13-23889133-C-A details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_005932.4(MIPEP):c.188G>T(p.Arg63Leu) variant causes a missense, splice region change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000079 in 1,265,740 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 17/23 in silico tools predict a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000079 ( 0 hom. )

Consequence

MIPEP
NM_005932.4 missense, splice_region

Scores

Splicing: ADA: 0.00002191

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -0.545

Variant links:

Genes affected

MIPEP (HGNC:7104): (mitochondrial intermediate peptidase) The product of this gene performs the final step in processing a specific class of nuclear-encoded proteins targeted to the mitochondrial matrix or inner membrane. This protein is primarily involved in the maturation of oxidative phosphorylation (OXPHOS)-related proteins. This gene may contribute to the functional effects of frataxin deficiency and the clinical manifestations of Friedreich ataxia. [provided by RefSeq, Jul 2008]

MIPEP links:

PCOTH (HGNC:39839): (prostate and testis expressed opposite C1QTNF9B and MIPEP) Predicted to be located in cytoplasm. [provided by Alliance of Genome Resources, Apr 2022]

PCOTH links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.19461808).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
MIPEP	NM_005932.4 link	c.188G>T	p.Arg63Leu	missense_variant, splice_region_variant	1/19	ENST00000382172.4	NP_005923.3	Q99797

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	UniProt
MIPEP	ENST00000382172.4 link	c.188G>T	p.Arg63Leu	missense_variant, splice_region_variant	1/19	1	NM_005932.4	ENSP00000371607.3	Q99797
PCOTH	ENST00000382133.9 link	n.170+122C>A		intron_variant		1
MIPEP	ENST00000469167.1 link	n.266G>T		non_coding_transcript_exon_variant	1/3	5

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.0000289

AC:

AN:

34544

Hom.:

AF XY:

0.0000525

AC XY:

AN XY:

19034

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

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:

0.0000997

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000790

AC:

AN:

1265740

Hom.:

Cov.:

AF XY:

0.00000647

AC XY:

AN XY:

618696

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000784

Gnomad4 OTH exome

AF:

0.0000389

GnomAD4 genome

Cov.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Dec 02, 2024

This sequence change replaces arginine, which is basic and polar, with leucine, which is neutral and non-polar, at codon 63 of the MIPEP protein (p.Arg63Leu). The frequency data for this variant in the population databases is considered unreliable, as metrics indicate poor data quality at this position in the gnomAD database. This variant has not been reported in the literature in individuals affected with MIPEP-related conditions. ClinVar contains an entry for this variant (Variation ID: 1926951). An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant¬†is likely to be tolerated. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.11

BayesDel_addAF

Benign

-0.25

BayesDel_noAF

Benign

-0.60

CADD

Benign

DANN

Benign

0.97

DEOGEN2

Benign

0.033

Eigen

Benign

-0.82

Eigen_PC

Benign

-0.75

FATHMM_MKL

Benign

0.10

LIST_S2

Uncertain

0.90

M_CAP

Benign

0.017

MetaRNN

Benign

0.19

MetaSVM

Benign

-1.0

MutationAssessor

Benign

1.7

PrimateAI

Benign

0.45

PROVEAN

Benign

0.10

REVEL

Benign

0.029

Sift

Benign

0.32

Sift4G

Benign

0.30

Polyphen

0.0060

Vest4

0.10

MutPred

0.47

Loss of methylation at R63 (P = 0.009);

MVP

0.10

MPC

0.12

ClinPred

0.32

GERP RS

-0.62

Varity_R

0.11

gMVP

0.62

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.000022

dbscSNV1_RF

Benign

0.032

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.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over