Genetic Variant NM_001304274.2:c.419G>A (chr11-31433473-C-T) – ACMG Classification: Uncertain_significance (3 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 3 ACMG points: 3P and 0B. PM2PP3

The NM_001304274.2(IMMP1L):c.419G>A(p.Arg140Gln) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000127 in 1,568,752 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 Uncertain significance (★).

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000013 ( 0 hom. )

Consequence

IMMP1L
NM_001304274.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 7.35

Publications

4 publications found

Variant links:

Genes affected

IMMP1L (HGNC:26317): (inner mitochondrial membrane peptidase subunit 1) The mitochondrial inner membrane peptidase (IMP) complex generates mature, active proteins in the mitochondrial intermembrane space by proteolytically removing the mitochondrial targeting presequence of nuclear-encoded proteins. IMP1 and IMP2 (IMMP2L; MIM 605977) are the catalytic subunits of the IMP complex (Burri et al., 2005 [PubMed 15814844]).[supplied by OMIM, Sep 2008]

IMMP1L links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.816

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
IMMP1L	NM_001304274.2 link	c.419G>A	p.Arg140Gln	missense_variant	Exon 5 of 6	ENST00000532287.6	NP_001291203.1	Q96LU5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
IMMP1L	ENST00000532287.6 link	c.419G>A	p.Arg140Gln	missense_variant	Exon 5 of 6	1	NM_001304274.2	ENSP00000435576.1		Q96LU5

Frequencies

GnomAD3 genomes

AF:

0.00000658

AC:

AN:

152016

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000214

AC:

AN:

233120

AF XY:

0.0000159

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000997

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000185

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000134

AC:

AN:

1416736

Hom.:

Cov.:

AF XY:

0.00000850

AC XY:

AN XY:

705696

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

31784

American (AMR)

AF:

0.0000735

AC:

AN:

40808

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25076

East Asian (EAS)

AF:

0.00

AC:

AN:

38900

South Asian (SAS)

AF:

0.0000124

AC:

AN:

80390

European-Finnish (FIN)

AF:

0.00

AC:

AN:

52530

Middle Eastern (MID)

AF:

0.00

AC:

AN:

4786

European-Non Finnish (NFE)

AF:

0.0000129

AC:

AN:

1083726

Other (OTH)

AF:

0.0000170

AC:

AN:

58736

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.470

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.00000658

AC:

AN:

152016

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74248

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41378

American (AMR)

AF:

0.00

AC:

AN:

15268

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3468

East Asian (EAS)

AF:

0.00

AC:

AN:

5190

South Asian (SAS)

AF:

0.00

AC:

AN:

4828

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10574

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.0000147

AC:

AN:

67990

Other (OTH)

AF:

0.00

AC:

AN:

2092

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.525

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.0000848

Hom.:

Bravo

AF:

0.0000416

ExAC

AF:

0.0000165

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Aug 14, 2024

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.419G>A (p.R140Q) alteration is located in exon 6 (coding exon 4) of the IMMP1L gene. This alteration results from a G to A substitution at nucleotide position 419, causing the arginine (R) at amino acid position 140 to be replaced by a glutamine (Q). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.50

BayesDel_addAF

Uncertain

0.093

BayesDel_noAF

Uncertain

0.10

CADD

Pathogenic

(source)

DANN

Pathogenic

1.0

DEOGEN2

Benign

0.20

T;.;.;T;.

Eigen

Pathogenic

0.79

Eigen_PC

Pathogenic

0.80

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Uncertain

0.88

.;D;.;D;D

M_CAP

Benign

0.024

MetaRNN

Pathogenic

0.82

D;D;D;D;D

MetaSVM

Benign

-0.73

MutationAssessor

Benign

2.0

M;.;.;M;.

PhyloP100

7.4

PrimateAI

Uncertain

0.58

PROVEAN

Uncertain

-3.0

D;D;D;D;D

REVEL

Uncertain

0.37

Sift

Uncertain

0.0070

D;D;D;D;D

Sift4G

Uncertain

0.012

D;T;D;D;D

Polyphen

1.0

D;.;.;D;.

Vest4

0.88

MVP

0.72

MPC

0.037

ClinPred

0.96

GERP RS

5.9

Varity_R

0.44

gMVP

0.79

Mutation Taster

=16/84

disease causing

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

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NM_001304274.2:c.419G>A

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over