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Drugs in development · updated 30 October 2026

Leflunomide: clinical trials and development status

Other names and codes: Arava

NLM verified identityApproved in the US (FDA)Authorised in the EU (EMA) since 2 September 1999

As of 30 October 2026 Leflunomide is in 13 active clinical trials (recruiting or ongoing, phases I–III) for 21 diseases. The most advanced phase is III.

13Active trials
IIIMost advanced phase
21Diseases studied

Summary updated every week · data as of 30 October 2026. In Phuturdex you can follow Leflunomide and get an email at every change or safety alert.

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Diseases studied

For each disease: the drug’s most advanced phase and active trials, with the reference trial on ClinicalTrials.gov.

DiseaseMost advanced phaseActive trialsReference trial
Rheumatoid arthritisIII2NCT03414502
Smoldering Multiple MyelomaII2NCT05014646
Ankylosing spondylitisII1NCT07138898
Arthritis, JuvenileII1NCT07138898
DermatomyositisII1NCT07138898
Dry eye syndromeII1NCT05113004
Giant cell arteritisII1NCT07138898
Granulomatosis with polyangiitisII1NCT07138898
Hematologic neoplasmII1NCT07709013
Multiple myelomaII1NCT04508790
Myelodysplastic SyndromesI–II1NCT06923488
Polymyalgia rheumaticaII1NCT07138898
PolymyositisII1NCT07138898
Psoriatic arthritisII1NCT07138898
Pulmonary hemosiderosisI–II1NCT05937191
Rheumatic DiseasesII1NCT07138898
SpondylarthritisII1NCT07138898
Systemic lupus erythematosusII1NCT07138898
VasculitisII1NCT07138898
Bronchiolitis obliterans syndromeI1NCT04212416
Pancreatic neoplasmI1NCT06454383

Everything on Leflunomide

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Source: Phuturdex analysis of ClinicalTrials.gov (U.S. National Library of Medicine), FDA and EMA data, updated 30 October 2026. Active trials = recruiting or ongoing, phases I–III. Diseases are those named by each trial (NLM MeSH terms). The estimated launch, when shown, is a Phuturdex calculation described on the Method page, not official data.

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