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CC-42344

Phase 2

Influenza A | Small molecule | Infectious Disease |Cocrystal Pharma, Inc.|Last Updated: Feb 19, 2026

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindCONTROLLEDDMC
Total Trials2
Total Enrollment158

FDA Designations

No designations recorded

Clinical trial landscape

CC-42344 · 2 trials · 1 indication

Phase 2 1Phase 1 1
NCT06160531Influenza Viral Challenge Study of CC-42344 in Healthy ParticipantsInfluenza A
COMPLETED78 Analytics
PHASE2COMPLETED
Influenza Viral Challenge Study of CC-42344 in Healthy Participants
Influenza AUnlock trial analytics

Study Endpoints

Primary Endpoints

Area under the influenza viral load-time curve (VL-AUC) of influenza challenge virus
Day 1 to Day 8

Determined by quantitative real time reverse transcriptase polymerase chain reaction (qRT-PCR) on nasal samples

Part 1 SAD: Number of Participants With Treatment-Emergent Adverse Events (TEAE)
Up to 16 days

AE was defined as any new unfavorable or unintended sign, symptom, or disease or change of an existing condition, which occurs during or after treatment, whether or not considered treatment-related. A clinically significant laboratory value should be reported as an adverse event.

Part 1 SAD: Number of Participants With Clinically Significant Laboratory Abnormalities
Up to 16 days

Number of participants with clinically significant laboratory abnormalities was reported.

Part 1 SAD: Number of Participants With Clinically Significant Changes From Baseline in Vital Signs
Up to 16 days

Number of participants with clinically significant changes from baseline in vital signs was reported

Part 1 SAD: Number of Participants With Clinically Significant Changes From Baseline in Electrocardiograms (ECGs)
Up to 16 days

Number of participants with clinically significant changes from baseline in ECG was reported

Part 2 MAD: Number of Participants With Treatment-Emergent Adverse Events (TEAE)
Up to 21 days

AE was defined as any new unfavorable or unintended sign, symptom, or disease or change of an existing condition, which occurs during or after treatment, whether or not considered treatment-related. A clinically significant laboratory value should be reported as an adverse event.

Part 2 MAD: Number of Participants With Clinically Significant Laboratory Abnormalities
Up to 21 days

Number of participants with clinically significant laboratory abnormalities was reported

Part 2 MAD: Number of Participants With Clinically Significant Changes From Baseline in Vital Signs
Up to 21 days

Number of participants with clinically significant changes from baseline in vital signs was reported

Part 2 MAD: Number of Participants With Clinically Significant Changes From Baseline in Electrocardiograms (ECGs)
Up to 14 days

Number of participants with clinically significant changes from baseline in ECGs was reported.

Secondary Endpoints

Maximum viral load
Day 1 to Day 8
Time to first confirmed nonquantifiable viral assessment
Day 1 to Day 8
VL-AUC of influenza challenge virus
Day 1 to Day 8
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Study Design & Arms

AllocationRANDOMIZED
MaskingQUADRUPLE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
CC-42344 Dose 1EXPERIMENTALLow dose group
CC-42344 Dose 2EXPERIMENTALHigh dose group
PlaceboPLACEBO_COMPARATOR -
SAD cohort 1AEXPERIMENTALfirst dose level with 6 active and 2 placebo healthy participants
SAD cohort 1BEXPERIMENTALsecond dose level with 6 active and 2 placebo healthy participants
SAD cohort 1CEXPERIMENTALthird dose level with 12 active and 2 placebo healthy participants; food-effect cohort
SAD cohort 1DEXPERIMENTALfourth dose level with 6 active and 2 placebo healthy participants
MAD cohort 2AEXPERIMENTALfirst dose level with 6 active and 2 placebo healthy participants dose x 14 days
MAD cohort 2BEXPERIMENTALsecond dose level with 6 active and 2 placebo healthy participants dose x 14 days
MAD cohort 2CEXPERIMENTALthird dose level with 6 active and 2 placebo healthy participants dose x 14 days
MAD cohort 2DEXPERIMENTALforth dose level with 6 active and 2 placebo healthy participants dose x 5 days
MAD cohort 2EEXPERIMENTALforth dose level with 6 active and 2 placebo healthy participants dose x 5 days

Interventions

NameTypeDescription
CC-42344DRUGAnti-influenza A agent
PlaceboDRUGMatching placebo
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Eligibility Criteria

Age Range18 Years to 55 Years
SexALL
Healthy VolunteersYes
Study Sites1

Inclusion Criteria: * Healthy adults * Body weight ≥50 kg * Body mass index ≥18 kg/m2 and ≤35 kg/m2 * Serology results consistent with susceptibility to challenge virus infection Exclusion Criteria: * History of or current significant medical condition * Upper or lower respiratory tract infection...

Countries:United KingdomAustralia
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Frequently asked questions about CC-42344

What is CC-42344 used for?

CC-42344 is an investigational small molecule being developed for the treatment of influenza A. It is currently in Phase 2 clinical development and has been studied in healthy participants in safety and viral challenge trials.

Who is developing CC-42344?

CC-42344 is being developed by Cocrystal Pharma, Inc., a biopharmaceutical company traded on NASDAQ under the ticker symbol COCP. The company is advancing the drug through clinical trials for influenza A.

What phase is CC-42344 in?

CC-42344 is in Phase 2 clinical development. It has completed a Phase 1 safety study and a Phase 2 influenza viral challenge study, both in healthy participants.

What clinical trials has CC-42344 been in?

CC-42344 has been studied in two completed trials. NCT05202379 was a Phase 1 safety study in 80 healthy participants in Australia. NCT06160531 was a Phase 2 influenza viral challenge study in 78 healthy participants in the United Kingdom.

Is CC-42344 FDA approved?

CC-42344 is not FDA approved. It is an investigational drug still in clinical development, with completed Phase 1 and Phase 2 trials for influenza A.