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CDI-988

Phase 1

Norovirus | Small molecule | Other |Cocrystal Pharma, Inc.|Last Updated: Feb 17, 2026

Success Probability
Approval Probability 71%
TA Base Rate26%
Adjusted LOA41%
ML RiskLOW_RISK
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Market & Valuation
rNPV $3.2B
Market Size $9.4B
Revenue Basis $1.6B
Competitors 6
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Trial Design
RandomizedDouble-BlindPLACEBO_CONTROLLEDBiomarker
Total Trials1
Total Enrollment40
FDA Designations
FAST_TRACK
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT07198139A Study to Evaluate the Efficacy, Safety and Pharmacokinetics of CDI-988 in Healthy Adults After Challenge With Snow Mountain VirusPHASE1 RECRUITING 40Mar 1, 2026Dec 1, 2026Feb 17, 20261 United States
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Study Endpoints
Primary Endpoints
Incidence of norovirus-confirmed disease
Day 0 to Day 21

Disease is defined as diarrhea and/or vomiting (during the inpatient period), with laboratory-confirmed infection (with SMV specific primers on stool/emesis) or seroconversion

Secondary Endpoints
Modified Vesikari Score (MVS) symptom scores during the inpatient period in infected patients
Day 1 to Day 6
Time to symptom improvement
Day 1 to Day 6
Time to first SMV-negative stool
Day 1 to Day 6
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Study Design & Arms
AllocationRANDOMIZED
MaskingQUADRUPLE
ModelPARALLEL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
Snow Mountain VirusOTHERChallenge with Snow Mountain Virus
Stage 2: Drug CDI-988EXPERIMENTAL -
Stage 2: PlaceboPLACEBO_COMPARATOR -
Interventions
NameTypeDescription
CDI-988DRUGAntiviral to treat norovirus
PlaceboDRUGMatching placebo
Snow Mountain VirusOTHERChallenge with Snow Mountain Virus
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Eligibility Criteria
Age Range18 Years — 49 Years
SexALL
Healthy VolunteersYes
Study Sites1

Inclusion Criteria: * Healthy male or non-pregnant female * Aged 18 to 49 years * Good state of health * Known fucosyl transferase 2 (FUT2) secretor status Exclusion Criteria: * History of participation in any norovirus challenge or vaccine clinical trial * Receipt or planned receipt of any non-l...

Countries:United States
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Recent Changes (Last 90 Days)
LOWMay 26, 2026NCT07198139primaryCompletionDate: changed
LOWMay 24, 2026NCT07198139studyFirstPostDate: changed