chr7-157367390-A-G

Variant names:

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 4P and 4B. PM1PM2BP4_Strong

The NM_058246.4(DNAJB6):c.253A>G(p.Ser85Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000685 in 1,459,046 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 17/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 6.9e-7 ( 0 hom. )

Consequence

DNAJB6
NM_058246.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.182

Publications

0 publications found

Variant links:

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

DNAJB6 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

PM1

In a hotspot region, there are 10 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 6 uncertain in NM_058246.4

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.038101852).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
DNAJB6	NM_058246.4 link	c.253A>G	p.Ser85Gly	missense_variant	Exon 5 of 10	ENST00000262177.9	NP_490647.1	O75190-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
DNAJB6	ENST00000262177.9 link	c.253A>G	p.Ser85Gly	missense_variant	Exon 5 of 10	1	NM_058246.4	ENSP00000262177.4		O75190-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.85e-7

AC:

AN:

1459046

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

726008

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33412

American (AMR)

AF:

0.00

AC:

AN:

44722

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26116

East Asian (EAS)

AF:

0.00

AC:

AN:

39686

South Asian (SAS)

AF:

0.00

AC:

AN:

86214

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53408

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5762

European-Non Finnish (NFE)

AF:

9.01e-7

AC:

AN:

1109448

Other (OTH)

AF:

0.00

AC:

AN:

60278

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.525

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

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

Uncertain:1

Nov 08, 2016

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

In summary, this variant is a novel missense change that is not predicted to affect protein function. There is no indication that it causes disease, but the available evidence is currently insufficient to prove that conclusively. Therefore, it has been classified as a Variant of Uncertain Significance. Algorithms developed to predict the effect of missense changes on protein structure and function output the following: (SIFT: "Tolerated"; PolyPhen-2: "Benign"; Align-GVGD: "Class C0"). The glycine amino acid residue is found in multiple mammalian species, suggesting that this missense change does not adversely affect protein function. These predictions have not been confirmed by published functional studies. This variant is not present in population databases (ExAC no frequency) and has not been reported in the literature in individuals with a DNAJB6-related disease. This sequence change replaces serine with glycine at codon 85 of the DNAJB6 protein (p.Ser85Gly). The serine residue is weakly conserved and there is a small physicochemical difference between serine and glycine. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.076

BayesDel_addAF

Benign

-0.11

BayesDel_noAF

Benign

-0.40

CADD

Benign

8.6

(source)

DANN

Benign

0.91

DEOGEN2

Benign

0.017

T;.;T;.;T;.;T;T

Eigen

Benign

-1.3

Eigen_PC

Benign

-1.3

FATHMM_MKL

Benign

0.31

LIST_S2

Benign

0.16

T;T;T;T;T;T;T;T

M_CAP

Benign

0.0087

MetaRNN

Benign

0.038

T;T;T;T;T;T;T;T

MetaSVM

Benign

-0.93

MutationAssessor

Benign

0.95

.;L;L;.;.;.;.;.

PhyloP100

0.18

PrimateAI

Benign

0.32

PROVEAN

Benign

-1.4

N;N;N;N;N;N;N;.

REVEL

Benign

0.11

Sift

Benign

0.56

T;T;T;T;T;T;T;.

Sift4G

Benign

1.0

T;T;T;T;T;T;T;T

Polyphen

0.0, 0.063

.;B;B;.;B;.;.;.

Vest4

0.22, 0.22, 0.21, 0.22

MutPred

0.25

Gain of relative solvent accessibility (P = 0.0249);Gain of relative solvent accessibility (P = 0.0249);Gain of relative solvent accessibility (P = 0.0249);Gain of relative solvent accessibility (P = 0.0249);Gain of relative solvent accessibility (P = 0.0249);Gain of relative solvent accessibility (P = 0.0249);Gain of relative solvent accessibility (P = 0.0249);Gain of relative solvent accessibility (P = 0.0249);

MVP

0.80

MPC

0.33

ClinPred

0.031

GERP RS

-4.9

Varity_R

0.036

gMVP

0.75

Mutation Taster

=88/12

polymorphism

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over