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Drugs in development · updated 30 October 2026

Primary immunodeficiency disease: drugs in development

Rare diseasePrevalence 1-9 / 100 000 according to Orphanet · ORPHA:101997

As of 30 October 2026 there are 7 active clinical trials (recruiting or ongoing, phases I–III) on 13 drugs for primary immunodeficiency disease. 5 are experimental, that is not yet approved in the United States.

7Active trials
5Experimental drugs
3Experimental, 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
GC5107III1NCT04565015
NewnormIII1NCT04640142
TAK-881III1NCT06076642
CD34I–II1NCT01966367
RimiducidAP1903I–II1NCT03301168

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
AlemtuzumabCampath, Lemtrada®II2NCT01962415
FludarabineFludara, FLUDARABINII2NCT01962415
MelphalanEvomela®, Hepzato®II2NCT01962415
CyclophosphamideCyclophosphamid, CytoxanII1NCT04232085
HydroxyureaHydroxycarbamide, HydroxycarbamidII1NCT01962415
Mycophenolate MofetilMycophenolate, CellceptII1NCT04232085
TacrolimusEnvarsus XR, Prograf®II1NCT04232085
ThiotepaTepylute®, Tepadina And Sodium Chloride®II1NCT01962415

Sorted by most advanced phase and number of active trials.

All 13 drugs, with the details

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Specific forms

Broader categories

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: D000081207 “Primary Immunodeficiency Diseases”. Prevalence: Orphanet.

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