11-72293368-T-C

Variant names:

• chr11-72293368-T-C
• rs1949484806
• NM_030813.6:c.2123A>G

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PM2 PM4

The NM_001258392.3(CLPB):​c.2033A>G​(p.Ter678Trpext*?) variant causes a stop lost change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: CLPB NM_001258392.3 stop_lost
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 2.83
• Publications: 0 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: G2P, Ambry Genetics, Labcorp Genetics (formerly Invitae), Orphanet
• 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.

• PM2: Very rare variant in population databases, with high coverage
• PM4: Stoplost variant in NM_001258392.3 Downstream stopcodon found after 696 codons.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001258392.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CLPB	NM_030813.6	MANE Plus Clinical	c.2123A>G	p.Ter708Trpext*?	stop_lost	Exon 17 of 17	NP_110440.1	A0A140VK11
	CLPB	NM_001258392.3	MANE Select	c.2033A>G	p.Ter678Trpext*?	stop_lost	Exon 16 of 16	NP_001245321.1	Q9H078-2
	CLPB	NM_001258394.3		c.1988A>G	p.Ter663Trpext*?	stop_lost	Exon 18 of 18	NP_001245323.1	Q9H078-4

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CLPB	ENST00000294053.9	TSL:1 MANE Plus Clinical	c.2123A>G	p.Ter708Trpext*?	stop_lost	Exon 17 of 17	ENSP00000294053.3	Q9H078-1
	CLPB	ENST00000538039.6	TSL:2 MANE Select	c.2033A>G	p.Ter678Trpext*?	stop_lost	Exon 16 of 16	ENSP00000441518.1	Q9H078-2
	CLPB	ENST00000538021.5	TSL:1	n.*822A>G		non_coding_transcript_exon	Exon 9 of 9	ENSP00000445180.2	F6SS08

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, single submitter

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

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Uncertain	0.040	T
BayesDel_noAF	Benign	-0.18
CADD	Benign	16
DANN	Benign	0.88
Eigen	Pathogenic	1.0
Eigen_PC	Pathogenic	0.87
FATHMM_MKL	Benign	0.72	D
PhyloP100		2.8
Vest4		0.38
GERP RS		6.1
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Mutation Taster		=10/190	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: rs1949484806; hg19: chr11-72004412;