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Cryptosporidium parvum oocysts

Phase 2

Cryptosporidiosis | Monoclonal antibody | Infectious Disease |Novartis AG|Last Updated: Jul 20, 2026

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Trial Design
RandomizedDouble-BlindPLACEBO_CONTROLLED
Total Trials1
Total Enrollment80
FDA Designations
No designations recorded
Clinical trial landscape

Cryptosporidium parvum oocysts · 2 trials · 2 indications

Phase 2 1Phase 1 1
NCT07249463Study Testing the Efficacy, Safety, and Tolerability of EDI048 in Cryptosporidium Infection Model in Healthy AdultsCryptosporidiosis
RECRUITING80 Analytics
PHASE2RECRUITING
Study Testing the Efficacy, Safety, and Tolerability of EDI048 in Cryptosporidium Infection Model in Healthy Adults
CryptosporidiosisUnlock trial analytics
Study Endpoints
Primary Endpoints
Average stool grade after the initiation of EDI048 or placebo treatment
Day 3, Day 4 and Day 5

To determine the efficacy of EDI048 vs. placebo in healthy volunteers to reduce severity or resolve diarrhea.

Percentage of Participants With Cryptosporidium Infection From 72 Hours to 10 Days Post ABO809 Oral Administration
At ≥72 hours post-administration (or sooner if associated with symptoms suggestive of diarrheal illness) up to Day 10 (inclusive).

Cryptosporidium infection was measured by examining the presence of a Cryptosporidium antigen in stool using a commercially available diagnostic Enzyme Immunoassay (EIA) test. Up to 3 stool samples per day were collected, each separated by approximately 4-hour intervals, were analyzed by EIA for parasitological assessment of oocyst shedding.

Secondary Endpoints
Maximum stool grade after the initiation of EDI048 or placebo treatment
Day 3, Day 4 and Day 5
Time to resolution of clinical diarrheal illness
up to Day 35
Number of participants with associated gastrointestinal symptoms
up to Day 35
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Study Design & Arms
AllocationRANDOMIZED
MaskingDOUBLE
ModelPARALLEL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
EDI048EXPERIMENTALParticipants will receive ABO809 as a single oral dose. If participant is symptomatic, then he/she would be randomized to get EDI048 administered orally.
PlaceboPLACEBO_COMPARATORParticipants will receive ABO809 as a single oral dose. If participant is symptomatic, then he/she would be randomized to get placebo administered orally.
ABO809EXPERIMENTALParticipants will receive ABO809 at a single oral dose of 1x10\^4 oocysts. Other doses such as 1x10\^6 oocysts may be considered to optimize the model
Interventions
NameTypeDescription
Cryptosporidium parvum oocysts (ABO809)BIOLOGICALABO809 oral suspension, single dose
EDI048DRUGEDI048 administered orally
PlaceboOTHERPlacebo administered orally
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Eligibility Criteria
Age Range18 Years to 50 Years
SexALL
Healthy VolunteersYes
Study Sites2

Inclusion Criteria: * Signed informed consent must be obtained prior to participation in the study. * Ability to communicate well with the Investigator, and to understand and comply with the requirements of the study. * Male and female participants must be between 18 to 50 years of age and in good ...

Countries:United States
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Recent Changes (Last 90 Days)
LOWJul 20, 2026NCT07249463Enrollment: 96 → 80
LOWJul 20, 2026NCT07249463Enrollment: 96 → 80
LOWJun 2, 2026NCT07249463lastUpdatePostDate: changed
LOWJun 2, 2026NCT07249463lastUpdatePostDate: changed
LOWJun 2, 2026NCT07249463lastUpdatePostDate: changed
LOWMay 26, 2026NCT07249463Enrollment: 80 → 96
LOWMay 24, 2026NCT07249463studyFirstPostDate: changed