rs886041119

Variant names:

• chr11-72293553-G-GC
• rs886041119
• NM_030813.6:c.1937dupG

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PVS1_Moderate PM2

The NM_030813.6(CLPB):​c.1937dupG​(p.Cys647LeufsTer26) variant causes a frameshift change. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as not provided (no stars).

• Frequency: Genomes: not found (cov: 32)
• Consequence: CLPB NM_030813.6 frameshift
• Clinical Significance: not provided no classification provided O:1
• Conservation: PhyloP100: 5.98
• Publications: 1 publications found

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

ENSG00000255843 (HGNC:):

ACMG classification

Our verdict: Uncertain_significance. The variant received 4 ACMG points.

• PVS1: Loss of function variant, product does not undergo nonsense mediated mRNA decay. Variant is located in the 3'-most exon, not predicted to undergo nonsense mediated mRNA decay. Fraction of 0.088 CDS is truncated, and there are 1 pathogenic variants in the truncated region.
• PM2: Very rare variant in population databases, with high coverage

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

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CLPB	NM_030813.6	MANE Plus Clinical	c.1937dupG	p.Cys647LeufsTer26	frameshift	Exon 17 of 17	NP_110440.1
	CLPB	NM_001258392.3	MANE Select	c.1847dupG	p.Cys617LeufsTer26	frameshift	Exon 16 of 16	NP_001245321.1
	CLPB	NM_001258394.3		c.1802dupG	p.Cys602LeufsTer26	frameshift	Exon 18 of 18	NP_001245323.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CLPB	ENST00000294053.9	TSL:1 MANE Plus Clinical	c.1937dupG	p.Cys647LeufsTer26	frameshift	Exon 17 of 17	ENSP00000294053.3
	CLPB	ENST00000538039.6	TSL:2 MANE Select	c.1847dupG	p.Cys617LeufsTer26	frameshift	Exon 16 of 16	ENSP00000441518.1
	CLPB	ENST00000538021.5	TSL:1	n.*636dupG		non_coding_transcript_exon	Exon 9 of 9	ENSP00000445180.2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ClinVar

ClinVar submissions as Germline

Significance: not provided

Revision: no classification provided

Pathogenic	VUS	Benign	Condition
-	-	-	3-methylglutaconic aciduria, type VIIB (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		6.0
Mutation Taster		=1/199	disease causing (ClinVar)

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: rs886041119; hg19: chr11-72004597;