ENPP6
protein-codingectonucleotide pyrophosphatase/phosphodiesterase 6, the group of Ectonucleotide pyrophosphatase/phosphodiesterase family
Gene summary
Enables glycerophosphocholine cholinephosphodiesterase activity. Involved in choline metabolic process and lipid metabolic process. Located in extracellular region and plasma membrane. [provided by Alliance of Genome Resources, Jul 2025]
MANE transcript
Inheritance
ClinVar variants
Top phenotype
gnomAD constraint
Max pathogenic AF
Genomic locus
External References & Databases
Transcript & Mutation Effects
hg38 • Region Span ~132.5 kbGenCC Phenotypes & Disease Associations
Curated gene-disease validity assertions and inheritance patterns
No GenCC data available for this gene.
ClinVar Associated Diseases & Phenotypes
Reported disease conditions connected to ENPP6 variants in ClinVar
ClinVar Variants & Pathogenicity by Type
Statistics based on transcript NM_153343.4. Only rare variants are included.
We include only reliable ClinVar variants with their consequences to MANE Select, MANE Plus Clinical transcripts, or transcripts with TSL equal to 1. Click a count to filter the variants table below.
Slight differences between displayed counts and ClinVar may occur due to a different transcript/consequence chosen by our variant effect predictor, or because we classify Benign/Likely benign as Likely benign and Pathogenic/Likely pathogenic as Likely pathogenic.
| Effect | PathogenicP | Likely pathogenicLP | VUS | Likely benignLB | BenignB | Sum |
|---|---|---|---|---|---|---|
| synonymous | 1 | 1 | 2 | |||
| missense | 80 | 80 | ||||
| nonsense | 0 | |||||
| start loss | 0 | |||||
| frameshift | 1 | 1 | ||||
| splice donor/acceptor (+/-2bp) | 0 | |||||
| Total | 0 | 0 | 81 | 1 | 1 | 83 |
Transcript Catalog
Annotated transcript isoforms across RefSeq and Ensembl databases
| Transcript ID | Source | Protein ID | Coding Exons | MANE Status |
|---|---|---|---|---|
| RefSeq | NP_699174.1 | 8 | MANE Select | |
| Ensembl | ENSP00000296741.2 | 8 | MANE Select | |
| Ensembl | ENSP00000423497.1 | 4 | Standard | |
| Ensembl | ENSP00000622410.1 | 7 | Standard |
Gene Ontology (GO) Annotations & Pathways
Biological processes, molecular functions, cellular components and pathways
Pathways ConsensusPathDB
- Ether lipid metabolism - Homo sapiens (human)
- Metabolism of lipids
- Metabolism
- Glycerophospholipid catabolism
- PI Metabolism
Biological Process
- lipid metabolic process
- choline metabolic process
- glycerophospholipid catabolic process
Molecular Function
- phosphoric diester hydrolase activity
- glycerophosphodiester phosphodiesterase activity
- glycerophosphocholine cholinephosphodiesterase activity
Cellular Component
- extracellular region
- plasma membrane
- anchored component of membrane
- extracellular exosome
gnomAD Constraint
Source:
- Gene type
- protein_coding
- Transcript type
- protein_coding
- Transcript
- ENST00000296741
- Coding exons
- 8
- Length
- 132525
- Individuals with no LoFs
- 125712
- Homozygous LoFs
- 0
- Heterozygous LoFs
- 36
- Defined
- 125748
- p
- 0.000143
| Z-Score | Observed | Expected | Observed/Expected | Mutation Rate | Total Possible | |
|---|---|---|---|---|---|---|
| Missense | 0.311 | 256 | 270 | 0.947 | 0.0000158 | 2889 |
| Missense (PolyPhen) | 98 | 114.06 | 0.8592 | 1217 | ||
| Synonymous | -0.837 | 118 | 107 | 1.10 | 0.00000678 | 854 |
| Loss of Function | 0.955 | 15 | 19.6 | 0.767 | 8.76e-7 | 227 |
Population LoF Frequency
| Population | CAF | p-value | Status |
|---|---|---|---|
| African | 0.000062 | 0.000062 | rare |
| Latino/Admixed American | 0.000058 | 0.000058 | rare |
| Ashkenazi Jewish | 0 | 0.0 | absent |
| East Asian | 0.00027 | 0.00027 | rare |
| Finnish | 0.00014 | 0.00014 | rare |
| European (Non-Finnish) | 0.00015 | 0.00015 | rare |
| South Asian | 0.00026 | 0.00026 | rare |
| Other | 0 | 0.0 | absent |
dbNSFP Gene Annotations
Source:
- Function
- FUNCTION: Choline-specific glycerophosphodiester phosphodiesterase. The preferred substrate may be lysosphingomyelin (By similarity). Hydrolyzes lysophosphatidylcholine (LPC) to form monoacylglycerol and phosphorylcholine but not lysophosphatidic acid, showing it has a lysophospholipase C activity. Has a preference for LPC with short (12:0 and 14:0) or polyunsaturated (18:2 and 20:4) fatty acids. Also hydrolyzes glycerophosphorylcholine and sphingosylphosphorylcholine efficiently. Hydrolyzes the classical substrate for phospholipase C, p-nitrophenyl phosphorylcholine in vitro, while it does not hydrolyze the classical nucleotide phosphodiesterase substrate, p-nitrophenyl thymidine 5'- monophosphate. Does not hydrolyze diacyl phospholipids such as phosphatidylethanolamine, phosphatidylinositol, phosphatidylserine, phosphatidylglycerol and phosphatidic acid. {ECO:0000250, ECO:0000269|PubMed:15788404}.;
Intolerance Scores
- LoFtool
- 0.649
- RVIS EVS
- -0.35
- RVIS percentile EVS
- 29.49
Essentials
- Essential (CRISPR)
- N
- Essential (CRISPR2)
- N
- Essential (gene trap)
- N
- Indispensability pred.
- E
- Indispensability score
- 0.924
Gene Damage Prediction
| All | Recessive | Dominant | |
|---|---|---|---|
| Mendelian | Medium | Medium | Medium |
| Primary Immunodeficiency | Medium | Medium | Medium |
| Cancer | Medium | Medium | Medium |