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Drugs in development · updated 30 October 2026

Hypereosinophilic syndrome: drugs in development

Rare diseasePrevalence 1-9 / 100 000 according to Orphanet · ORPHA:168956

As of 30 October 2026 there are 7 active clinical trials (recruiting or ongoing, phases I–III) on 8 drugs for hypereosinophilic syndrome. One is experimental, that is not yet approved in the United States.

7Active trials
1Experimental drugs
0Experimental, in phase III

Summary updated every week · data as of 30 October 2026. In Phuturdex you get the full detail of every drug and an email when an alert is published on the ones you follow.

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Experimental drugs

Not yet approved by the US FDA for any indication.

DrugMost advanced phaseActive trialsReference trial
PevonedistatI–II1NCT03862157

Sorted by most advanced phase and number of active trials.

Approved drugs in new trials

Approved by the US FDA for at least one indication, not necessarily this disease, and now in active trials on it.

DrugMost advanced phaseActive trialsReference trial
BenralizumabFasenra®III2NCT07444567
DepemokimabExdensur®III1NCT05334368
RuxolitinibJakavi, Jakafi Xr®II2NCT03801434
AzacitidineAzacytidine, 5-azacytidineI–II1NCT03862157
DupilumabDUPIXENTII1NCT06477653
ImatinibSTI571, Imkeldi®II1NCT00044304
VenetoclaxVentoclax, Venclexta®I–II1NCT03862157

Sorted by most advanced phase and number of active trials.

All 8 drugs, with the details

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Source: Phuturdex analysis of ClinicalTrials.gov data (U.S. National Library of Medicine), updated 30 October 2026. Active trials = recruiting or ongoing, phases I–III, with at least one identified drug; phase and sites refer to the trials on this disease. Disease name: Wikidata; NLM MeSH term: D017681 “Hypereosinophilic Syndrome”. Prevalence: Orphanet.

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