11-72293407-C-G

Position:

• chr11-72293407-C-G

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_001258392.3(CLPB):​c.1994G>C​(p.Arg665Pro) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,868 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R665W) has been classified as Benign.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: CLPB NM_001258392.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.501

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 (HGNC:):

ACMG classification

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=0.15784186).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
CLPB	NM_030813.6	c.2084G>C	p.Arg695Pro	missense_variant	17/17	ENST00000294053.9	NP_110440.1
CLPB	NM_001258392.3	c.1994G>C	p.Arg665Pro	missense_variant	16/16	ENST00000538039.6	NP_001245321.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
CLPB	ENST00000294053.9	c.2084G>C	p.Arg695Pro	missense_variant	17/17	1	NM_030813.6	ENSP00000294053.3
CLPB	ENST00000538039.6	c.1994G>C	p.Arg665Pro	missense_variant	16/16	2	NM_001258392.3	ENSP00000441518.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461868 Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0 AN XY: 727232

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: 8.99e-7

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

EpiCase AF: 0.0000545

EpiControl AF: 0.00

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

GeneDx

Jan 10, 2022

Not observed at significant frequency in large population cohorts (gnomAD); In silico analysis supports that this missense variant does not alter protein structure/function; Has not been previously published as pathogenic or benign to our knowledge -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.20
BayesDel_addAF	Benign	-0.0048	T
BayesDel_noAF	Benign	-0.24
CADD	Benign	18
DANN	Uncertain	0.99
DEOGEN2	Benign	0.045	T;.;.;T;.;.
Eigen	Benign	-0.34
Eigen_PC	Benign	-0.31
FATHMM_MKL	Uncertain	0.86	D
LIST_S2	Uncertain	0.94	D;D;D;D;D;D
M_CAP	Uncertain	0.13	D
MetaRNN	Benign	0.16	T;T;T;T;T;T
MetaSVM	Benign	-0.80	T
MutationAssessor	Benign	1.8	L;.;.;.;.;.
PrimateAI	Benign	0.20	T
PROVEAN	Benign	-1.1	N;N;N;N;N;.
REVEL	Benign	0.16
Sift	Uncertain	0.0030	D;D;D;D;D;.
Sift4G	Uncertain	0.011	D;D;D;D;D;.
Polyphen		0.92	P;.;P;.;.;.
Vest4		0.37
MutPred		0.19		Loss of MoRF binding (P = 0.007);.;.;.;.;.;
MVP		0.56
MPC		1.0
ClinPred		0.86	D
GERP RS		-0.49
Varity_R		0.29
gMVP		0.80

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr11-72004451;