Genetic Variant DNAJC19:p.Ter117MetfsTer3 (chr3-180984642-A-AT) – ACMG Classification: Uncertain_significance (4 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PVS1_ModeratePM2

The NM_145261.4(DNAJC19):c.348dupA(p.Ter117MetfsTer3) variant causes a frameshift change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000276 in 1,448,164 control chromosomes in the GnomAD database, with no homozygous occurrence. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position (i.e. K116K) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000028 ( 0 hom. )

Consequence

DNAJC19
NM_145261.4 frameshift

Scores

Not classified

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 0.945

Publications

0 publications found

Variant links:

Genes affected

DNAJC19 (HGNC:30528): (DnaJ heat shock protein family (Hsp40) member C19) The protein encoded by this gene is thought to be part of a complex involved in the ATP-dependent transport of transit peptide-containing proteins from the inner cell membrane to the mitochondrial matrix. Defects in this gene are a cause of 3-methylglutaconic aciduria type 5 (MGA5), also known as dilated cardiomyopathy with ataxia (DCMA). Alternative splicing of this gene results in multiple transcript variants. Related pseudogenes have been identified on chromosomes 1, 2, 6, 10, 14 and 19. [provided by RefSeq, Jan 2012]

DNAJC19 Gene-Disease associations (from GenCC):

3-methylglutaconic aciduria type 5
Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), ClinGen, Orphanet

DNAJC19 links:

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ACMG classification

Classification was made for transcript

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

PVS1

Loss of function variant, product does not undergo nonsense mediated mRNA decay. Variant is located in the 3'-most exon, not predicted to undergo nonsense mediated mRNA decay. Fraction of 0.00855 CDS is truncated, and there are 0 pathogenic variants in the truncated region.

PM2

Very rare variant in population databases, with high coverage;

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_145261.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
DNAJC19	NM_145261.4	MANE Select	c.348dupA	p.Ter117MetfsTer3	frameshift	Exon 6 of 6	NP_660304.1	A0A0S2Z5X1
DNAJC19	NM_001190233.2		c.273dupA	p.Ter92MetfsTer3	frameshift	Exon 6 of 6	NP_001177162.1	Q96DA6-2
DNAJC19	NR_033721.2		n.430dupA		non_coding_transcript_exon	Exon 5 of 5

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
DNAJC19	ENST00000382564.8	TSL:1 MANE Select	c.348dupA	p.Ter117MetfsTer3	frameshift	Exon 6 of 6	ENSP00000372005.2	Q96DA6-1
DNAJC19	ENST00000928270.1		c.345dupA	p.Ter116MetfsTer3	frameshift	Exon 6 of 6	ENSP00000598329.1
DNAJC19	ENST00000479269.5	TSL:3	c.273dupA	p.Ter92MetfsTer3	frameshift	Exon 6 of 6	ENSP00000419191.1	Q96DA6-2

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

0.00000276

AC:

AN:

1448164

Hom.:

Cov.:

AF XY:

0.00000139

AC XY:

AN XY:

720670

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33106

American (AMR)

AF:

0.00

AC:

AN:

44138

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25832

East Asian (EAS)

AF:

0.00

AC:

AN:

39398

South Asian (SAS)

AF:

0.00

AC:

AN:

85260

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53032

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5126

European-Non Finnish (NFE)

AF:

0.00000272

AC:

AN:

1102480

Other (OTH)

AF:

0.0000167

AC:

AN:

59792

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.438

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

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>80

Age

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

PhyloP100

0.94

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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3-180984642-AT-ATT

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over