rs1057518741

Variant names:

• chr13-23862328-T-C
• rs1057518741
• NM_005932.4:c.1027A>G

Variant summary

Our verdict is Uncertain significance. The variant received 5 ACMG points: 5P and 0B. PM2 PP3_Moderate PP5

The NM_005932.4(MIPEP):​c.1027A>G​(p.Lys343Glu) variant causes a missense change. The variant allele was found at a frequency of 0.000000698 in 1,432,326 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 Conflicting classifications of pathogenicity (no stars).

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 7.0e-7 (0 hom.)
• Consequence: MIPEP NM_005932.4 missense
• Clinical Significance: Conflicting classifications of pathogenicity criteria provided, conflicting classifications P:2 U:1
• Conservation: PhyloP100: 6.05
• Publications: 5 publications found

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 Gene-Disease associations (from GenCC):

• lethal left ventricular non-compaction-seizures-hypotonia-cataract-developmental delay syndrome

  Inheritance: AR Classification: STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Orphanet, Broad Center for Mendelian Genomics
• mitochondrial disease

  Inheritance: AR Classification: MODERATE Submitted by: ClinGen

ACMG classification

Our verdict: Uncertain_significance. The variant received 5 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.906
• PP5: Variant 13-23862328-T-C is Pathogenic according to our data. Variant chr13-23862328-T-C is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 208632.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MIPEP	NM_005932.4	c.1027A>G	p.Lys343Glu	missense_variant	Exon 9 of 19	ENST00000382172.4	NP_005923.3
MIPEP	XM_011535097.3	c.841A>G	p.Lys281Glu	missense_variant	Exon 9 of 19		XP_011533399.1
MIPEP	XM_011535098.4	c.1027A>G	p.Lys343Glu	missense_variant	Exon 9 of 17		XP_011533400.1
MIPEP	XM_047430368.1	c.841A>G	p.Lys281Glu	missense_variant	Exon 9 of 17		XP_047286324.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MIPEP	ENST00000382172.4	c.1027A>G	p.Lys343Glu	missense_variant	Exon 9 of 19	1	NM_005932.4	ENSP00000371607.3
MIPEP	ENST00000494139.1	n.424A>G		non_coding_transcript_exon_variant	Exon 4 of 6	2

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 6.98e-7 AC: 1 AN: 1432326 Hom.: 0 Cov.: 26 AF XY: 0.00 AC XY: 0 AN XY: 712010

African (AFR) AF: 0.00 AC: 0 AN: 32986

American (AMR) AF: 0.00 AC: 0 AN: 43104

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25588

East Asian (EAS) AF: 0.00 AC: 0 AN: 39232

South Asian (SAS) AF: 0.00 AC: 0 AN: 83450

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 52288

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5544

European-Non Finnish (NFE) AF: 9.17e-7 AC: 1 AN: 1090930

Other (OTH) AF: 0.00 AC: 0 AN: 59204

GnomAD4 genome Cov.: 33

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Pathogenic:2 Uncertain:1

Revision: criteria provided, conflicting classifications

Submissions by phenotype

Lethal left ventricular non-compaction-seizures-hypotonia-cataract-developmental delay syndrome Pathogenic:2

Dec 01, 2016

OMIM

Significance: Pathogenic

Review Status: no assertion criteria provided

Collection Method: literature only

- -

Oct 04, 2024

Al Jalila Children’s Genomics Center, Al Jalila Childrens Speciality Hospital

Significance: Likely pathogenic

Review Status: criteria provided, single submitter

Collection Method: research

PS3(moderate),PM3(moderate),PM2 -

Cardiomyopathy;C1860834:Floppy infant;C1960469:Left ventricular noncompaction Uncertain:1

Jun 17, 2015

Baylor Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Possible pathogenicity based on finding it once in our laboratory homozygous in a 10-month-old male with global delays, hypotonia, mild opisthotonus, slightly dysmorphic, acquired microcephaly, failure to thrive, vision loss, small ASD secundum with left to right shunt and moderate left ventricular hypertrophy without left ventricular outflow obstruction. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.91
BayesDel_addAF	Uncertain	0.099	D
BayesDel_noAF	Benign	-0.090
CADD	Pathogenic	28
DANN	Uncertain	1.0
DEOGEN2	Benign	0.40	T
Eigen	Pathogenic	0.80
Eigen_PC	Pathogenic	0.71
FATHMM_MKL	Uncertain	0.96	D
LIST_S2	Uncertain	0.93	D
M_CAP	Benign	0.024	T
MetaRNN	Pathogenic	0.91	D
MetaSVM	Benign	-0.75	T
MutationAssessor	Pathogenic	3.6	H
PhyloP100		6.0
PrimateAI	Uncertain	0.62	T
PROVEAN	Uncertain	-3.3	D
REVEL	Uncertain	0.39
Sift	Uncertain	0.0040	D
Sift4G	Uncertain	0.0040	D
Polyphen		0.98	D
Vest4		0.70
MutPred		0.78		Loss of MoRF binding (P = 0.008);
MVP		0.59
MPC		0.53
ClinPred		0.99	D
GERP RS		4.8
Varity_R		0.94
gMVP		0.86
Mutation Taster		=43/57	disease causing

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

Other links and lift over

dbSNP: rs1057518741; hg19: chr13-24436467;