FLCN
protein-codingfolliculin, the group of DENN domain containing
Gene summary
This gene is located within the Smith-Magenis syndrome region on chromosome 17. Mutations in this gene are associated with Birt-Hogg-Dube syndrome, which is characterized by fibrofolliculomas, renal tumors, lung cysts, and pneumothorax. Alternative splicing of this gene results in two transcript variants encoding different isoforms. [provided by RefSeq, Jul 2008]
MANE transcript
Inheritance
ClinVar variants
Top phenotype
gnomAD constraint
Max pathogenic AF
Genomic locus
External References & Databases
Transcript & Mutation Effects
hg38 • Region Span ~25.0 kbGenCC Phenotypes & Disease Associations
Curated gene-disease validity assertions and inheritance patterns
Inheritance Pattern: AD
Disease ID:MONDO:0008259
Submitter: Genomics England PanelApp
Inheritance Pattern: AD
Disease ID:MONDO:0007607
Submitter: Orphanet
Inheritance Pattern: AD
Disease ID:MONDO:0008259
Submitter: Orphanet
Inheritance Pattern: AD
Disease ID:MONDO:0007607
Submitter: Genomics England PanelApp
Inheritance Pattern: AD
Disease ID:MONDO:0005206
Submitter: Genomics England PanelApp
Inheritance Pattern: AD
Disease ID:MONDO:0800445
Submitter: G2P
Inheritance Pattern: AD
Disease ID:MONDO:0007607
Submitter: ClinGen
There has been sufficient amount of evidence published associating the FLCN gene with Birt-Hogg-Dube syndrome (BHD) since the gene-disease relationship was first proposed by Nickerson et al. (2002). Plenty of case level studies have been performed with BHD patients that have variants in the FLCN gene. FCLN, which is expressed in skin, lung, and kidney, acts as a general tumor suppressor in human RCC cells in vivo. Knockdown of FLCN in ACHN cells led to the formation of significantly larger tumors and reintroduction of FLCN in 786-0 cells led to a strong decrease in tumor growth. Flcn+/- mice display preneoplastic kidney lesions and tumors and a Nihon rat model of inherited renal cancer with an intragenic Flcn mutation was also established. All of these evidences suggest a definitive relationship between the FLCN gene and Birt-Hogg-Dube syndrome (BHD).
Inheritance Pattern: AD
Disease ID:MONDO:0800445
Submitter: Ambry Genetics
Inheritance Pattern: AD
Disease ID:MONDO:0005575
Submitter: Ambry Genetics
Inheritance Pattern: AD
Disease ID:MONDO:0008259
Submitter: Ambry Genetics
Inheritance Pattern: AD
Disease ID:MONDO:0007607
Submitter: Labcorp Genetics (formerly Invitae)
Inheritance Pattern: AD
Disease ID:MONDO:0800444
Submitter: PanelApp Australia
Clinical Genomic Database (CGD)
Manifestation: Dermatologic; Oncologic; Pulmonary
Intervention: Oncologic; Pulmonary
Rationale: Individuals are at risk for a number of types of neoplasms, and surveillance and early diagnosis/treatment may be beneficial; Some individuals may demonstrate isolated pneumothorax, but may be at elevated risk for malignancies; Affected individuals commonly have recurrent pneumothoraces, and early pleurodesis may beneficial)
ClinVar Associated Diseases & Phenotypes
Reported disease conditions connected to FLCN variants in ClinVar
ClinVar Variants & Pathogenicity by Type
Statistics based on transcript NM_144997.7. 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 | 5 | 2 | 7 | 583 | 25 | 622 |
| missense | 17 | 19 | 1097 | 147 | 2 | 1282 |
| nonsense | 78 | 12 | 4 | 94 | ||
| start loss | 3 | 3 | 6 | |||
| frameshift | 220 | 42 | 6 | 1 | 269 | |
| splice donor/acceptor (+/-2bp) | 22 | 45 | 2 | 1 | 70 | |
| Total | 345 | 123 | 1116 | 732 | 27 | 2343 |
Highest pathogenic variant AF is 0.00006884336
Transcript Catalog
Annotated transcript isoforms across RefSeq and Ensembl databases
| Transcript ID | Source | Protein ID | Coding Exons | MANE Status |
|---|---|---|---|---|
| RefSeq | NP_659434.2 | 11 | MANE Select | |
| Ensembl | ENSP00000285071.4 | 11 | MANE Select | |
| RefSeq | NP_001340158.1 | 12 | Standard | |
| RefSeq | NP_001340159.1 | 11 | Standard |
Model Organisms & Knockout Phenotypes
Observed phenotypic effects in mouse and zebrafish models
| Gene / Model | Organism | Observed Phenotype |
|---|---|---|
| flcn | Danio rerio | Structure: post-vent region Quality: bent abnormal |
Gene Ontology (GO) Annotations & Pathways
Biological processes, molecular functions, cellular components and pathways
Pathways ConsensusPathDB
- mTOR signaling pathway - Homo sapiens (human)
- Renal cell carcinoma - Homo sapiens (human)
Biological Process
- negative regulation of transcription by RNA polymerase II
- in utero embryonic development
- regulation of protein phosphorylation
- positive regulation of protein phosphorylation
- cell-cell junction assembly
Molecular Function
- guanyl-nucleotide exchange factor activity
- protein binding
- protein-containing complex binding
Cellular Component
- nucleus
- cytoplasm
- lysosome
- cytosol
- plasma membrane
gnomAD Constraint
Source:
- Gene type
- protein_coding
- Transcript type
- protein_coding
- Transcript
- ENST00000285071
- Coding exons
- 11
- Length
- 24977
- Individuals with no LoFs
- 125723
- Homozygous LoFs
- 0
- Heterozygous LoFs
- 25
- Defined
- 125748
- p
- 0.0000994
| Z-Score | Observed | Expected | Observed/Expected | Mutation Rate | Total Possible | |
|---|---|---|---|---|---|---|
| Missense | 1.13 | 293 | 353 | 0.831 | 0.0000245 | 3818 |
| Missense (PolyPhen) | 50 | 81.857 | 0.61082 | 910 | ||
| Synonymous | -0.917 | 163 | 149 | 1.10 | 0.0000114 | 1132 |
| Loss of Function | 3.94 | 5 | 27.1 | 0.184 | 0.00000135 | 293 |
Population LoF Frequency
| Population | CAF | p-value | Status |
|---|---|---|---|
| African | 0 | 0.0 | absent |
| Latino/Admixed American | 0.000029 | 0.000029 | rare |
| Ashkenazi Jewish | 0 | 0.0 | absent |
| East Asian | 0.00027 | 0.00027 | rare |
| Finnish | 0 | 0.0 | absent |
| European (Non-Finnish) | 0.00012 | 0.00012 | rare |
| South Asian | 0.00013 | 0.00013 | rare |
| Other | 0.00016 | 0.00016 | rare |
dbNSFP Gene Annotations
Source:
- Function
- FUNCTION: May be a tumor suppressor. May be involved in energy and/or nutrient sensing through the AMPK and mTOR signaling pathways. May regulate phosphorylation of RPS6KB1. {ECO:0000269|PubMed:12204536, ECO:0000269|PubMed:17028174, ECO:0000269|PubMed:18663353}.;
- Disease
- DISEASE: Birt-Hogg-Dube syndrome (BHD) [MIM:135150]: A rare autosomal dominant genodermatosis characterized by hair follicle hamartomas (fibrofolliculomas), kidney tumors, and spontaneous pneumothorax. Fibrofolliculomas are part of the triad of Birt- Hogg-Dube syndrome skin lesions that also includes trichodiscomas and acrochordons. Onset of this dermatologic condition is invariably in adulthood. Birt-Hogg-Dube syndrome is associated with a variety of histologic types of renal tumors, including chromophobe renal cell carcinoma (RCC), benign renal oncocytoma, clear-cell RCC and papillary type I RCC. Multiple lipomas, angiolipomas, and parathyroid adenomas are also seen in Birt-Hogg- Dube syndrome patients. {ECO:0000269|PubMed:12204536, ECO:0000269|PubMed:15852235, ECO:0000269|PubMed:18234728, ECO:0000269|PubMed:19785621}. Note=The disease is caused by mutations affecting the gene represented in this entry.; DISEASE: Primary spontaneous pneumothorax (PSP) [MIM:173600]: Condition in which air is present in the pleural space in the absence of a precipitating event, such as trauma or lung disease. This results in secondary collapse of the lung, either partially or completely, and some degree of hypoxia. PSP is relatively common, with an incidence between 7.4-18/100'000 for men and 1.2- 6/100'000 for women and a dose-dependent, increased risk among smokers. Most cases are sporadic, typically occurring in tall, thin men aged 10-30 years and generally while at rest. Familial PSP is rarer and usually is inherited as an autosomal dominant condition with reduced penetrance, although X-linked recessive and autosomal recessive inheritance have also been suggested. {ECO:0000269|PubMed:15657874, ECO:0000269|PubMed:18505456, ECO:0000269|PubMed:18579543}. Note=The disease is caused by mutations affecting the gene represented in this entry.; DISEASE: Renal cell carcinoma (RCC) [MIM:144700]: Renal cell carcinoma is a heterogeneous group of sporadic or hereditary carcinoma derived from cells of the proximal renal tubular epithelium. It is subclassified into clear cell renal carcinoma (non-papillary carcinoma), papillary renal cell carcinoma, chromophobe renal cell carcinoma, collecting duct carcinoma with medullary carcinoma of the kidney, and unclassified renal cell carcinoma. Clear cell renal cell carcinoma is the most common subtype. {ECO:0000269|PubMed:18794106}. Note=The gene represented in this entry may be involved in disease pathogenesis.;
Recessive Scores
- pRec
- 0.172
Intolerance Scores
- LoFtool
- 0.0936
- RVIS EVS
- -0.2
- RVIS percentile EVS
- 39.17
Essentials
- Essential (CRISPR)
- N
- Essential (CRISPR2)
- S
- Essential (gene trap)
- N
- Indispensability pred.
- N
- Indispensability score
- 0.276
Gene Damage Prediction
| All | Recessive | Dominant | |
|---|---|---|---|
| Mendelian | Medium | Medium | Medium |
| Primary Immunodeficiency | Medium | Medium | Medium |
| Cancer | Medium | Medium | Medium |