chr7-157367435-T-G

Position:

• chr7-157367435-T-G

Variant summary

Our verdict is Likely pathogenic. Variant got 7 ACMG points: 7P and 0B. PM1 PM2 PP3_Moderate PP5

The NM_058246.4(DNAJB6):​c.298T>G​(p.Phe100Val) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. F100S) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 33)
• Consequence: DNAJB6 NM_058246.4 missense
• Clinical Significance: Pathogenic no assertion criteria provided P:1
• Conservation: PhyloP100: 7.13

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]

ACMG classification

Verdict is Likely_pathogenic. Variant got 7 ACMG points.

• PM1: In a hotspot region, there are 2 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 7 uncertain in NM_058246.4
• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.867
• PP5: Variant 7-157367435-T-G is Pathogenic according to our data. Variant chr7-157367435-T-G is described in ClinVar as [Pathogenic]. Clinvar id is 225174.Status of the report is no_assertion_criteria_provided, 0 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
DNAJB6	NM_058246.4	c.298T>G	p.Phe100Val	missense_variant	5/10	ENST00000262177.9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
DNAJB6	ENST00000262177.9	c.298T>G	p.Phe100Val	missense_variant	5/10	1	NM_058246.4

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 29

GnomAD4 genome Cov.: 33

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1

Revision: no assertion criteria provided

Submissions by phenotype

Autosomal dominant limb-girdle muscular dystrophy type 1D (DNAJB6) Pathogenic:1

Pathogenic, no assertion criteria provided

literature only

OMIM

Sep 26, 2018

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	1.0
BayesDel_addAF	Pathogenic	0.43	D
BayesDel_noAF	Pathogenic	0.38
CADD	Pathogenic	29
DANN	Uncertain	0.99
DEOGEN2	Benign	0.21	T;.;D;.;T;.;T
Eigen	Pathogenic	0.84
Eigen_PC	Pathogenic	0.73
FATHMM_MKL	Uncertain	0.96	D
LIST_S2	Uncertain	0.97	D;D;D;D;D;D;D
M_CAP	Uncertain	0.16	D
MetaRNN	Pathogenic	0.87	D;D;D;D;D;D;D
MetaSVM	Uncertain	0.72	D
MutationAssessor	Pathogenic	3.8	.;H;H;.;.;.;.
MutationTaster	Benign	1.0	D;D;D;D
PrimateAI	Uncertain	0.74	T
PROVEAN	Pathogenic	-6.9	D;D;D;D;D;D;.
REVEL	Pathogenic	0.88
Sift	Pathogenic	0.0	D;D;D;D;D;D;.
Sift4G	Pathogenic	0.0010	D;D;D;D;D;D;D
Polyphen		1.0, 1.0	.;D;D;.;D;.;.
Vest4		0.90, 0.95, 0.85, 0.96
MutPred		0.50		Loss of helix (P = 0.2022);Loss of helix (P = 0.2022);Loss of helix (P = 0.2022);Loss of helix (P = 0.2022);Loss of helix (P = 0.2022);Loss of helix (P = 0.2022);Loss of helix (P = 0.2022);
MVP		0.92
MPC		1.3
ClinPred		1.0	D
GERP RS		4.6
Varity_R		0.84
gMVP		0.97

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

LitVar

Other links and lift over

dbSNP: rs869320700; hg19: chr7-157160129;