19-14518317-C-G

Variant names:

• chr19-14518317-C-G
• NM_006145.3:c.33G>C
• DNAJB1 p.Leu11Leu

Variant summary

Our verdict is Likely benign. The variant received -1 ACMG points: 2P and 3B. PM2 BP4_Moderate BP7

The NM_006145.3(DNAJB1):​c.33G>C​(p.Leu11Leu) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: not found (cov: 34)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: DNAJB1 NM_006145.3 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.348
• Publications: 0 publications found

Genes affected

DNAJB1 (HGNC:5270): (DnaJ heat shock protein family (Hsp40) member B1) This gene encodes a member of the DnaJ or Hsp40 (heat shock protein 40 kD) family of proteins. 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. The encoded protein is a molecular chaperone that stimulates the ATPase activity of Hsp70 heat-shock proteins in order to promote protein folding and prevent misfolded protein aggregation. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Sep 2015]

TECR (HGNC:4551): (trans-2,3-enoyl-CoA reductase) This gene encodes a multi-pass membrane protein that resides in the endoplasmic reticulum, and belongs to the steroid 5-alpha reductase family. The elongation of microsomal long and very long chain fatty acid consists of 4 sequential reactions. This protein catalyzes the final step, reducing trans-2,3-enoyl-CoA to saturated acyl-CoA. Alternatively spliced transcript variants have been found for this gene.[provided by RefSeq, Apr 2011]

TECR Gene-Disease associations (from GenCC):

• autosomal recessive non-syndromic intellectual disability

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
• intellectual disability

  Inheritance: AR Classification: LIMITED Submitted by: ClinGen
• intellectual disability, autosomal recessive 14

  Inheritance: AR Classification: LIMITED Submitted by: Ambry Genetics, PanelApp Australia, Labcorp Genetics (formerly Invitae)

ACMG classification

Our verdict: Likely_benign. The variant received -1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.38).
• BP7: Synonymous conserved (PhyloP=0.348 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_006145.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	DNAJB1	NM_006145.3	MANE Select	c.33G>C	p.Leu11Leu	synonymous	Exon 1 of 3	NP_006136.1	Q6FHS4
	DNAJB1	NM_001313964.2		c.-89-1271G>C		intron	N/A	NP_001300893.1	P25685-2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	DNAJB1	ENST00000254322.3	TSL:1 MANE Select	c.33G>C	p.Leu11Leu	synonymous	Exon 1 of 3	ENSP00000254322.1	P25685-1
	DNAJB1	ENST00000595139.2	TSL:4	c.33G>C	p.Leu11Leu	synonymous	Exon 1 of 2	ENSP00000469221.2	M0QXK0
	DNAJB1	ENST00000396969.8	TSL:2	c.-89-1271G>C		intron	N/A	ENSP00000444212.1	P25685-2

Frequencies

GnomAD3 genomes Cov.: 34

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 1452770 Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0 AN XY: 723008

African (AFR) AF: 0.00 AC: 0 AN: 33024

American (AMR) AF: 0.00 AC: 0 AN: 43818

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25844

East Asian (EAS) AF: 0.00 AC: 0 AN: 39300

South Asian (SAS) AF: 0.00 AC: 0 AN: 85754

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 50340

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

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1109998

Other (OTH) AF: 0.00 AC: 0 AN: 60002

GnomAD4 genome Cov.: 34

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.38
CADD	Benign	9.7
DANN	Benign	0.87
PhyloP100		0.35
PromoterAI		0.025	Neutral
RBP_binding_hub_radar		1.0
RBP_regulation_power_radar		2.7

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

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Other links and lift over

hg19: chr19-14629129;