NM_030813.6:c.1343A>G

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -5 ACMG points: 0P and 5B. BP4_StrongBP6

The NM_030813.6(CLPB):c.1343A>G(p.Asn448Ser) variant causes a missense change. The variant allele was found at a frequency of 0.000236 in 1,614,164 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. N448H) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0010 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00015 ( 1 hom. )

Consequence

CLPB
NM_030813.6 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:4

Conservation

PhyloP100: 6.24

Publications

0 publications found

Variant links:

Genes affected

CLPB (HGNC:30664): (ClpB family mitochondrial disaggregase) This gene belongs to the ATP-ases associated with diverse cellular activities (AAA+) superfamily. Members of this superfamily form ring-shaped homo-hexamers and have highly conserved ATPase domains that are involved in various processes including DNA replication, protein degradation and reactivation of misfolded proteins. All members of this family hydrolyze ATP through their AAA+ domains and use the energy generated through ATP hydrolysis to exert mechanical force on their substrates. In addition to an AAA+ domain, the protein encoded by this gene contains a C-terminal D2 domain, which is characteristic of the AAA+ subfamily of Caseinolytic peptidases to which this protein belongs. It cooperates with Hsp70 in the disaggregation of protein aggregates. Allelic variants of this gene are associated with 3-methylglutaconic aciduria, which causes cataracts and neutropenia. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Apr 2015]

CLPB Gene-Disease associations (from GenCC):

3-methylglutaconic aciduria, type VIIB
Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, G2P, Ambry Genetics, Labcorp Genetics (formerly Invitae)
neutropenia, severe congenital, 9, autosomal dominant
Inheritance: AD Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
Leigh syndrome
Inheritance: AR Classification: LIMITED Submitted by: ClinGen

CLPB links:

LOC124902708 (HGNC:):

LOC124902708 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -5 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.013725162).

BP6

Variant 11-72301879-T-C is Benign according to our data. Variant chr11-72301879-T-C is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 476192.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_030813.6. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
CLPB	NM_030813.6	MANE Plus Clinical	c.1343A>G	p.Asn448Ser	missense	Exon 12 of 17	NP_110440.1
CLPB	NM_001258392.3	MANE Select	c.1253A>G	p.Asn418Ser	missense	Exon 11 of 16	NP_001245321.1
CLPB	NM_001258394.3		c.1208A>G	p.Asn403Ser	missense	Exon 13 of 18	NP_001245323.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
CLPB	ENST00000294053.9	TSL:1 MANE Plus Clinical	c.1343A>G	p.Asn448Ser	missense	Exon 12 of 17	ENSP00000294053.3
CLPB	ENST00000538039.6	TSL:2 MANE Select	c.1253A>G	p.Asn418Ser	missense	Exon 11 of 16	ENSP00000441518.1
CLPB	ENST00000538021.5	TSL:1	n.*42A>G		non_coding_transcript_exon	Exon 4 of 9	ENSP00000445180.2

Frequencies

GnomAD3 genomes

AF:

0.00102

AC:

155

AN:

152174

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00355

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000131

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000193

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000588

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.000342

AC:

AN:

251460

AF XY:

0.000324

show subpopulations

Gnomad AFR exome

AF:

0.00406

Gnomad AMR exome

AF:

0.000173

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000163

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000264

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000155

AC:

226

AN:

1461872

Hom.:

Cov.:

AF XY:

0.000138

AC XY:

100

AN XY:

727236

show subpopulations

African (AFR)

AF:

0.00403

AC:

135

AN:

33478

American (AMR)

AF:

0.000268

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.0000756

AC:

AN:

39700

South Asian (SAS)

AF:

0.000174

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53418

Middle Eastern (MID)

AF:

0.000347

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.0000369

AC:

AN:

1111994

Other (OTH)

AF:

0.000298

AC:

AN:

60396

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.490

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.00102

AC:

155

AN:

152292

Hom.:

Cov.:

AF XY:

0.000926

AC XY:

AN XY:

74478

show subpopulations

African (AFR)

AF:

0.00354

AC:

147

AN:

41572

American (AMR)

AF:

0.000131

AC:

AN:

15304

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.000193

AC:

AN:

5180

South Asian (SAS)

AF:

0.000207

AC:

AN:

4820

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10612

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000588

AC:

AN:

68016

Other (OTH)

AF:

0.00

AC:

AN:

2112

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.491

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.000451

Hom.:

Bravo

AF:

0.00115

ESP6500AA

AF:

0.00114

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.000395

AC:

Asia WGS

AF:

0.000866

AC:

AN:

3478

EpiCase

AF:

0.000109

EpiControl

AF:

0.00

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1Benign:4

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:1Benign:1

Mar 01, 2024

GeneDx

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Has not been previously published as pathogenic or benign to our knowledge; In silico analysis supports that this missense variant has a deleterious effect on protein structure/function

Jan 01, 2023

CeGaT Center for Human Genetics Tuebingen

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

CLPB: BS1

CLPB-related disorder

Benign:1

Sep 03, 2024

PreventionGenetics, part of Exact Sciences

Significance:Likely benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications).

Inborn genetic diseases

Benign:1

Apr 18, 2025

Ambry Genetics

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity.

3-methylglutaconic aciduria, type VIIB

Benign:1

Jan 30, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.069

BayesDel_addAF

Benign

-0.49

BayesDel_noAF

Benign

-0.47

CADD

Benign

(source)

DANN

Uncertain

0.99

DEOGEN2

Uncertain

0.60

Eigen

Benign

0.17

Eigen_PC

Uncertain

0.32

FATHMM_MKL

Uncertain

0.97

LIST_S2

Uncertain

0.97

M_CAP

Benign

0.0087

MetaRNN

Benign

0.014

MetaSVM

Benign

-1.1

MutationAssessor

Uncertain

2.1

PhyloP100

6.2

PrimateAI

Uncertain

0.65

PROVEAN

Uncertain

-3.6

REVEL

Benign

0.10

Sift

Benign

0.17

Sift4G

Benign

0.28

Polyphen

0.86

Vest4

0.48

MVP

0.32

MPC

0.64

ClinPred

0.027

GERP RS

5.6

Varity_R

0.35

gMVP

0.73

Mutation Taster

=92/8

polymorphism

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over