OncoSignal
Live from Open Targets Platform, fetched 2026-11-11 15:56 UTC. Every row links to its source record.

FOLR1 folate receptor alpha

ENSG00000110195 · protein coding · Open Targets profile

Binds to folate and reduced folic acid derivatives and mediates delivery of 5-methyltetrahydrofolate and folate analogs into the interior of cells (PubMed:19074442, PubMed:23851396, PubMed:23934049, PubMed:2527252, PubMed:8033114, PubMed:8567728). Has high affinity for folate and folic acid analogs at neutral pH (PubMed:23851396, PubMed:23934049, PubMed:2527252, PubMed:8033114, PubMed:8567728). Exposure to slightly acidic pH after receptor endocytosis triggers a conformation change that strongly reduces its affinity for folates and mediates their release (PubMed:8567728). Required for normal embryonic development and normal cell proliferation (By similarity). {ECO:0000250|UniProtKB:P35846, ECO:0000269|PubMed:19074442, ECO:0000269|PubMed:23851396, ECO:0000269|PubMed:23934049, ECO:0000269|PubMed:2527252, ECO:0000269|PubMed:8033114, ECO:0000269|PubMed:8567728}.

2 of the 4 drugs recorded against FOLR1 are approved, and 1 more reached Phase 3

Each band is a group of drugs. It runs from the kind of drug on the left to the furthest stage that drug has reached in any disease on the right. Thicker bands mean more drugs.

1 antibody drug at Phase 3: FARLETUZUMAB1 antibody drug at Phase 2: MIRVETUXIMAB1 unknown drug at Approved: VINTAFOLIDE1 antibody drug conjugate drug at Approved: MIRVETUXIMAB SORAVTANSINEAntibody 2Unknown 1Antibody drug conjugate 1Approved 2Phase 3 1Phase 2 1

Approved bands are highlighted. Withdrawn means the drug was pulled from the market or from development. A combined phase counts as the later one (Phase 1/2 is shown as Phase 2). Hover a band for the drug names. Source: Open Targets Platform, fetched live.

In 1 of 15 cancers, the evidence for FOLR1 comes mainly from inherited variants

Each row is a cancer, strongest overall evidence first. The two dots show how strong the inherited (germline) and tumour-mutation (somatic) evidence is; the line between them is the gap.

Inherited (germline) variantsMutations in tumours (somatic)
00.250.50.751ovarian cancerovarian cancerperitoneal neoplasmperitoneal neoplasmfallopian tube neoplasmfallopian tube neoplasmmalignant epithelial tumor of ovarymalignant epithelial tumor of ovaryfallopian tube cancerfallopian tube cancerprimary peritoneal carcinomaprimary peritoneal carcinomaovarian neoplasmovarian neoplasmovarian carcinomaovarian carcinomanon-small cell lung carcinomanon-small cell lung carcinomafallopian tube carcinomafallopian tube carcinomatriple-negative breast carcinomatriple-negative breast carcinomabreast cancerbreast cancerlung adenocarcinomalung adenocarcinomaendometrial cancerendometrial cancergastrointestinal stromal tumorgastrointestinal stromal tumorgastrointestinal stromal tumor: germline 0.18

Scores run from 0 (no evidence) to 1 (strongest). A missing dot at 0 means Open Targets holds no evidence of that kind. Source: Open Targets Platform, fetched live.

Tractability

Small molecule
Structure with Ligand, High-Quality Ligand
Antibody
Advanced Clinical, UniProt loc high conf, UniProt SigP or TMHMM, GO CC med conf
PROTAC
Small Molecule Binder
Other modalities
Approved Drug

gnomAD loss of function constraint: o/e 0.4820899963378906 (upper bound 0.7979599833488464). Low values mean loss of function is poorly tolerated, a safety flag for inhibition.

Who runs trials of these drugs

Principal investigators and study chairs on 29 registry trials, updated in the last three years, of the most advanced drugs against FOLR1 (vintafolide, mirvetuximab soravtansine, farletuzumab, mirvetuximab), ranked by Phase 2+ trials. Live from ClinicalTrials.gov.

8 of 27 trials of drugs against FOLR1 have sites only in United States

Registry trials of vintafolide, mirvetuximab soravtansine, farletuzumab, mirvetuximab updated in the last three years, counted by the country group of their listed sites. A trial with sites in several groups counts in each; 12 of 27 have all sites in one country.

Sites only in this groupSites here and elsewhere
United StatesUnited States: 8 trials with sites only hereUnited States: 15 trials with sites here and elsewhere23ChinaChina: 2 trials with sites only hereChina: 4 trials with sites here and elsewhere6EuropeEurope: 1 trials with sites only hereEurope: 15 trials with sites here and elsewhere16JapanJapan: 1 trials with sites only hereJapan: 5 trials with sites here and elsewhere6OtherOther: 0 trials with sites only hereOther: 14 trials with sites here and elsewhere14

Site counts are not patients per country, and trials registered only outside ClinicalTrials.gov are not covered. Where sites are is a fact about the record, not a judgement of its quality. Europe is the EU and EEA, the UK and Switzerland. 2 trials list no sites and are left out. Source: ClinicalTrials.gov, fetched live.

12 trials of drugs against FOLR1 were stopped early; 3 give no reason

Terminated, withdrawn and suspended interventional trials of vintafolide, mirvetuximab soravtansine, farletuzumab, mirvetuximab, newest update first, live from ClinicalTrials.gov. Each reason is quoted exactly as the registry gives it; we do not sort reasons into safety, efficacy or business. Dates are the last registry update. Showing the 12 most recent of 12.

Paediatric incentives and obligations for FOLR1's drugs

For vintafolide, mirvetuximab soravtansine, farletuzumab, mirvetuximab: what EMA and FDA publish about paediatric plans, orphan status and pediatric approvals, and how many registered studies take children. Each line is a yes, no or not published fact from the record linked under it; none of it is a forecast.

  • FDA pediatric target list: yes · FOLR1 is on the list. Membership alone neither requires nor waives a pediatric study.
  • EU paediatric investigation plan: yes · EMEA-001921-PIP01-16 (mirvetuximab soravtansine, Treatment of fallopian tube cancer;Treatment of ovarian carcinoma;Treatment of peritoneal carcinoma): W: decision granting a waiver in all age groups for all conditions or indications, 31 Jan 2017
    Rule: An EMA PIP decision (agreement, modification or waiver) lists the drug as its active substance, exact name. Source: EMA EMEA-001921-PIP01-16, 2026-11-11
  • EU orphan designation: yes · EU/3/15/1458 positive 19 Mar 2015: Treatment of ovarian cancer
    Rule: An EU orphan designation lists the drug as its active substance (exact name) or belongs to a medicine that does; withdrawn and expired designations are listed with their status. Source: EMA EU/3/15/1458, 2026-11-11
  • Authorised in the EU: yes · Elahere: authorised since 14 Nov 2024, orphan medicine
    Rule: An EMA medicine record lists the drug as its active substance or INN, exact name; national-only authorisations are not in this file. Source: EMA EPAR Elahere, 2026-11-11
  • FDA orphan designation: not published · FDA's orphan designation database turns away automated requests, so this app does not read it; search it by hand at the link
    Rule: Would be: an FDA orphan designation names the drug. Source: FDA orphan designations search
  • FDA pediatric oncology approval: no · FDA's table lists no pediatric approval of vintafolide, mirvetuximab soravtansine, farletuzumab, mirvetuximab
    Rule: FDA's Pediatric Oncology Drug Approvals table names the drug. Source: FDA Pediatric Oncology Drug Approvals (content current as of 2026-03-03), 2026-11-11
  • Registered studies open to children: yes · 1 interventional studies of vintafolide, mirvetuximab soravtansine, farletuzumab, mirvetuximab include patients under 18; 0 are recruiting, not yet recruiting or active
    Rule: The registry's age group includes Child (birth to 17 years), which also counts studies that set no minimum age. Source: ClinicalTrials.gov search, 2026-11-11

Rare pediatric disease voucher. FDA, content current as of 29 Apr 2026: “As of February 3, 2026, enactment of the Consolidated Appropriations Act, 2026, the rare pediatric disease PRV program will sunset after September 30, 2029. FDA may not award any PRVs under this program after September 30, 2029.” Voucher sale prices are not shown here; they appear only as company-reported news. FDA: Rare Pediatric Disease Designation and Priority Review Voucher Programs

All 4 drugs and clinical candidates as a table

Each drug, stage and indication links to its Open Targets record, where the trials and approvals behind it are listed. Salt forms (for example a mesylate) are listed as Open Targets records them, as separate entries.

DrugTypeHighest stageIndicationsSource records
VINTAFOLIDEUnknownapprovalneoplasm, ovarian cancer, endometrial cancer, lung adenocarcinoma, cancer, non-small cell lung carcinoma, triple-negative breast carcinomaOpen Targets · ChEMBL
MIRVETUXIMAB SORAVTANSINEAntibody drug conjugateapprovalovarian cancer, fallopian tube neoplasm, ovarian neoplasm, peritoneal neoplasm, neoplasm, malignant epithelial tumor of ovary, primary peritoneal carcinoma, fallopian tube cancer, +6 moreOpen Targets · ChEMBL
FARLETUZUMABAntibodyphase 3non-small cell lung carcinoma, ovarian cancer, ovarian carcinoma, malignant epithelial tumor of ovary, pituitary gland adenoma, lung adenocarcinoma, gastric cancer, HIV infectious diseaseOpen Targets · ChEMBL
MIRVETUXIMABAntibodyphase 2ovarian cancerOpen Targets · ChEMBL