rs869320702

Variant names:

• chr7-157367488-G-A
• rs869320702
• NM_058246.4:c.346+5G>A

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PM2 PP3 PP5

The NM_058246.4(DNAJB6):​c.346+5G>A variant causes a splice region, intron change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 2/3 splice prediction tools predicting alterations to normal splicing. Variant has been reported in ClinVar as Pathogenic (no stars).

• Frequency: Genomes: not found (cov: 33)
• Consequence: DNAJB6 NM_058246.4 splice_region, intron
• Scores: Splicing: ADA: 0.9981
• Clinical Significance: Pathogenic no assertion criteria provided P:1
• Conservation: PhyloP100: 5.13
• Publications: 5 publications found

Genes affected

DNAJB6 (HGNC:14888): (DnaJ heat shock protein family (Hsp40) member B6) This gene encodes a member of the DNAJ protein family. DNAJ family members are characterized by a highly conserved amino acid stretch called the 'J-domain' and function as one of the two major classes of molecular chaperones involved in a wide range of cellular events, such as protein folding and oligomeric protein complex assembly. This family member may also play a role in polyglutamine aggregation in specific neurons. Alternative splicing of this gene results in multiple transcript variants; however, not all variants have been fully described. [provided by RefSeq, Jul 2008]

DNAJB6 Gene-Disease associations (from GenCC):

• muscular dystrophy, limb-girdle, autosomal dominant

  Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
• autosomal dominant limb-girdle muscular dystrophy type 1D (DNAJB6)

  Inheritance: AD Classification: STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Orphanet

ACMG classification

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

• PM2: Very rare variant in population databases, with high coverage
• PP3: Splicing predictors support a deleterious effect. Scorers claiming Pathogenic: dbscSNV1_ADA, dbscSNV1_RF. Scorers claiming Uncertain: max_spliceai. No scorers claiming Benign.
• PP5: Variant 7-157367488-G-A is Pathogenic according to our data. Variant chr7-157367488-G-A is described in ClinVar as Pathogenic. ClinVar VariationId is 225177.Status of the report is no_assertion_criteria_provided, 0 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_058246.4. 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
	DNAJB6	NM_058246.4	MANE Select	c.346+5G>A		splice_region intron	N/A	NP_490647.1
	DNAJB6	NM_005494.3		c.346+5G>A		splice_region intron	N/A	NP_005485.1
	DNAJB6	NM_001363676.1		c.346+5G>A		splice_region intron	N/A	NP_001350605.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	DNAJB6	ENST00000262177.9	TSL:1 MANE Select	c.346+5G>A		splice_region intron	N/A	ENSP00000262177.4
	DNAJB6	ENST00000429029.6	TSL:1	c.346+5G>A		splice_region intron	N/A	ENSP00000397556.2
	DNAJB6	ENST00000459889.5	TSL:1	n.346+5G>A		splice_region intron	N/A	ENSP00000488263.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 23

GnomAD4 genome Cov.: 33

ClinVar

ClinVar submissions as Germline

Significance: Pathogenic

Revision: no assertion criteria provided

Pathogenic	VUS	Benign	Condition
1	-	-	Autosomal dominant limb-girdle muscular dystrophy type 1D (DNAJB6) (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.27
CADD	Benign	23
DANN	Benign	0.96
PhyloP100		5.1
RBP_binding_hub_radar		0.77
RBP_regulation_power_radar		1.9
Mutation Taster		=0/100	disease causing (ClinVar)

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Pathogenic	1.0
dbscSNV1_RF	Pathogenic	1.0
SpliceAI score (max)		0.32		Details are displayed if max score is > 0.2
DS_DL_spliceai		0.32		Position offset: -5

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

Other links and lift over

dbSNP: rs869320702; hg19: chr7-157160182;