# FANCL

Source: https://onco.cc/targets/fancl/  
OnCo record `fancl` (Target). Data CC BY-NC 4.0, attribute "Data from OnCo (onco.cc)"; commercial use needs a licence.

## TL;DR

FANCL (E3 ubiquitin-protein ligase FANCL) is an enzyme. The public catalogues list it as a drug target, a biomarker and a DNA repair gene, and clinical evidence ties its variants to diagnosis, prognosis or drug response. Tied to Prostate cancer.

## Summary

Ubiquitin ligase protein that mediates monoubiquitination of FANCD2 in the presence of UBE2T, a key step in the DNA damage pathway. Also mediates monoubiquitination of FANCI. May stimulate the ubiquitin release from UBE2W.

CIViC holds 1 clinical evidence item and 0 assertions across 1 variant, naming Olaparib. Open Targets scores its association with cancer at 0.56 (direct and indirect evidence; datatypes genetic literature 0.83, affected pathway 0.25, literature 0.53, genetic association 0.14, animal model 0.54).

## Fields

- Kind: Target
- Last checked: 2026-09-23
- Also known as: FA complementation group L; E3 ubiquitin-protein ligase FANCL; FLJ10335; FAAP43; Pog; PHF9
- Tags: cancer-genes-wave
- Symbol: FANCL
- Class: enzyme
- Biology: Ubiquitin ligase protein that mediates monoubiquitination of FANCD2 in the presence of UBE2T, a key step in the DNA damage pathway. Also mediates monoubiquitination of FANCI. May stimulate the ubiquitin release from UBE2W. May be required for proper primordial germ cell proliferation in the embryonic stage, whereas it is probably not needed for spermatogonial proliferation after birth. Location: Cytoplasm; Nucleus (UniProt). Locus 2p16.1 (HGNC).
- Where found: Prostate cancer: CIViC evidence names this disease

## Notes

- Written by scripts/fetch-cancer-genes.ts from CIViC, Open Targets, IntOGen, HGNC and UniProt; the function text is UniProt's, condensed and in UK spelling. Roles: CIViC lists 1 therapies; CIViC holds 1 clinical evidence items on its variants; UniProt keyword "DNA repair". Evidence tier "clinical-evidence" is the strongest of those signals.
- Prevalence not recorded: none of the sources gives a positivity rate.

## Sources

- HGNC HGNC:20748: https://www.genenames.org/data/gene-symbol-report/#!/hgnc_id/HGNC:20748
- UniProt Q9NW38: https://www.uniprot.org/uniprotkb/Q9NW38/entry
- NCBI Gene 55120: https://www.ncbi.nlm.nih.gov/gene/55120
- Ensembl ENSG00000115392: https://www.ensembl.org/Homo_sapiens/Gene/Summary?g=ENSG00000115392

## Connected records

- collections: [CIViC](https://onco.cc/collections/civic/), [Open Targets Platform](https://onco.cc/collections/open-targets/)
- cancers: [Prostate cancer](https://onco.cc/cancers/prostate/)

---
JSON: https://onco.cc/api/v1/entities/fancl.json