BPIFA1
protein-codingBPI fold containing family A member 1, the group of BPI fold containing
Gene summary
This gene is the human homolog of murine plunc, and like the mouse gene, is specifically expressed in the upper airways and nasopharyngeal regions. The encoded antimicrobial protein displays antibacterial activity against Gram-negative bacteria. It is thought to be involved in inflammatory responses to irritants in the upper airways and may also serve as a potential molecular marker for detection of micrometastasis in non-small-cell lung cancer. Multiple transcript variants resulting from alternative splicing in the 3' UTR have been detected, but the full-length nature of only three are known. [provided by RefSeq, Aug 2014]
- PLUNC
MANE transcript
Inheritance
ClinVar variants
Top phenotype
gnomAD constraint
Max pathogenic AF
Genomic locus
External References & Databases
Transcript & Mutation Effects
hg38 • Region Span ~7.3 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 BPIFA1 variants in ClinVar
ClinVar Variants & Pathogenicity by Type
Statistics based on transcript NM_130852.3. 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 | 0 | |||||
| missense | 38 | 4 | 1 | 43 | ||
| nonsense | 0 | |||||
| start loss | 0 | |||||
| frameshift | 0 | |||||
| splice donor/acceptor (+/-2bp) | 1 | 1 | ||||
| Total | 0 | 0 | 39 | 4 | 1 | 44 |
Transcript Catalog
Annotated transcript isoforms across RefSeq and Ensembl databases
| Transcript ID | Source | Protein ID | Coding Exons | MANE Status |
|---|---|---|---|---|
| RefSeq | NP_570913.1 | 7 | MANE Select | |
| Ensembl | ENSP00000346251.4 | 7 | MANE Select | |
| RefSeq | NP_001230122.1 | 7 | Standard | |
| RefSeq | NP_057667.1 | 7 | Standard |
Gene Ontology (GO) Annotations & Pathways
Biological processes, molecular functions, cellular components and pathways
Pathways ConsensusPathDB
- Antimicrobial peptides
- Innate Immune System
- Immune System
Biological Process
- immune response in nasopharyngeal-associated lymphoid tissue
- antimicrobial humoral response
- antibacterial humoral response
- innate immune response
- regulation of liquid surface tension
Molecular Function
- molecular_function
- protein binding
- lipid binding
Cellular Component
- extracellular region
- extracellular space
gnomAD Constraint
Source:
- Gene type
- protein_coding
- Transcript type
- protein_coding
- Transcript
- ENST00000354297
- Coding exons
- 7
- Length
- 7315
- Individuals with no LoFs
- 125630
- Homozygous LoFs
- 0
- Heterozygous LoFs
- 114
- Defined
- 125744
- p
- 0.000453
| Z-Score | Observed | Expected | Observed/Expected | Mutation Rate | Total Possible | |
|---|---|---|---|---|---|---|
| Missense | -0.439 | 147 | 133 | 1.11 | 0.00000648 | 1617 |
| Missense (PolyPhen) | 27 | 31.748 | 0.85046 | 431 | ||
| Synonymous | -0.575 | 64 | 58.4 | 1.10 | 0.00000291 | 583 |
| Loss of Function | -0.0818 | 12 | 11.7 | 1.03 | 6.92e-7 | 127 |
Population LoF Frequency
| Population | CAF | p-value | Status |
|---|---|---|---|
| African | 0.00025 | 0.00025 | rare |
| Latino/Admixed American | 0.0011 | 0.0011 | notable |
| Ashkenazi Jewish | 0.0015 | 0.0015 | notable |
| East Asian | 0.00022 | 0.00022 | rare |
| Finnish | 0.000046 | 0.000046 | rare |
| European (Non-Finnish) | 0.00043 | 0.00043 | rare |
| South Asian | 0.000066 | 0.000065 | rare |
| Other | 0.00016 | 0.00016 | rare |
dbNSFP Gene Annotations
Source:
- Function
- FUNCTION: Plays a role in the innate immune responses of the upper airways. Reduces the surface tension in secretions from airway epithelia and inhibits the formation of biofilm by pathogenic Gram-negative bacteria, such as P.aeruginosa and K.pneumoniae. Binds bacterial lipopolysaccharide (LPS). Negatively regulates proteolytic cleavage of SCNN1G, an event that is required for activation of the epithelial sodium channel (ENaC), and thereby contributes to airway surface liquid homeostasis and proper clearance of mucus. Plays a role in the airway inflammatory response after exposure to irritants. May attract macrophages and neutrophils. May be associated with tumor progression. {ECO:0000269|PubMed:11425234, ECO:0000269|PubMed:23132494, ECO:0000269|PubMed:23499554, ECO:0000269|PubMed:24043776, ECO:0000269|PubMed:24124190}.;
Recessive Scores
- pRec
- 0.341
Intolerance Scores
- RVIS EVS
- -0.29
- RVIS percentile EVS
- 32.94
Essentials
- Essential (CRISPR)
- N
- Essential (CRISPR2)
- N
- Essential (gene trap)
- N
- Indispensability pred.
- N
- Indispensability score
- 0.114
Gene Damage Prediction
| All | Recessive | Dominant | |
|---|---|---|---|
| Mendelian | Medium | Medium | Medium |
| Primary Immunodeficiency | Medium | Medium | Medium |
| Cancer | Medium | Medium | Medium |