7-157382328-G-T

Variant names:

• chr7-157382328-G-T
• rs150709673
• NM_058246.4:c.429G>T

Variant summary

Our verdict is Benign. The variant received -9 ACMG points: 0P and 9B. BP4_Strong BP7 BS2

The NM_058246.4(DNAJB6):​c.429G>T​(p.Ala143Ala) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000158 in 1,459,438 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position (i.e. A143A) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.000016 (0 hom.)
• Consequence: DNAJB6 NM_058246.4 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -1.60
• Publications: 1 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: Benign. The variant received -9 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.83).
• BP7: Synonymous conserved (PhyloP=-1.6 with no splicing effect.
• BS2: High AC in GnomAdExome4 at 23 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
DNAJB6	NM_058246.4	c.429G>T	p.Ala143Ala	synonymous_variant	Exon 6 of 10	ENST00000262177.9	NP_490647.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
DNAJB6	ENST00000262177.9	c.429G>T	p.Ala143Ala	synonymous_variant	Exon 6 of 10	1	NM_058246.4	ENSP00000262177.4

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.0000158 AC: 23 AN: 1459438 Hom.: 0 Cov.: 32 AF XY: 0.0000152 AC XY: 11 AN XY: 726010

African (AFR) AF: 0.00 AC: 0 AN: 33372

American (AMR) AF: 0.00 AC: 0 AN: 44354

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26124

East Asian (EAS) AF: 0.00 AC: 0 AN: 39634

South Asian (SAS) AF: 0.00 AC: 0 AN: 85956

European-Finnish (FIN) AF: 0.0000187 AC: 1 AN: 53392

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 4690

European-Non Finnish (NFE) AF: 0.0000198 AC: 22 AN: 1111716

Other (OTH) AF: 0.00 AC: 0 AN: 60200

GnomAD4 genome Cov.: 32

Alfa AF: 0.00 Hom.: 0

EpiCase AF: 0.0000545

EpiControl AF: 0.00

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.83
CADD	Benign	1.3
DANN	Benign	0.48
PhyloP100		-1.6

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: rs150709673; hg19: chr7-157175022;