Clinical trial Recruiting at 2 sites Phase2; Phase3 Interventional Ages 18 and up

CP-COV03 versus placebo for adults with dengue or dengue-like illness

Official title: A Randomized, Double-blinded, Placebo-controlled Clinical Trial to Evaluate Safety and Efficacy of CP-COV03 in Dengue Patients (Part 1) / Dengue and Dengue-like Illness Patients (Part 2)

Run by Hyundai Bioscience Co., Ltd. · NCT07576868 · Data updated 2026-11-12

This trial tests whether taking CP-COV03 for seven days helps adults with dengue (or dengue-like illnesses) recover faster and lower their viral levels compared with a placebo.

More Dengue trials

Quick facts

PhasePhase2; Phase3
Study typeInterventional
Ages18 Years and up
SexAll
Enrollment210 (estimated)
SponsorHyundai Bioscience Co., Ltd.
Industry-sponsored
Locations2 sites (Hanoi and 1 other locations)
StatusRecruiting
StartedApril 9, 2026
Main results expectedJanuary 2027
Study endsMay 2027
Registry record updatedJuly 10, 2026
Trial IDNCT07576868 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Adults aged 18 or older with recent-onset dengue symptoms—Phase 2 requires NS1 positivity and symptom onset within 72 hours with at least two moderate symptoms—are the intended participants.

Probably not a fit

People with severe dengue, prior dengue vaccination, or unstable chronic conditions such as uncontrolled diabetes or severe asthma were excluded and are unlikely to benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This randomized, double-blind, placebo-controlled Phase 2/3 trial gives adults with recent-onset dengue or dengue-like illness either CP-COV03 or placebo and follows them for safety, antiviral effect, and clinical recovery. In Phase 2 about 210 NS1-positive patients within 72 hours of fever onset will be randomized to placebo or one of three daily doses (450, 900, or 1,350 mg) of CP-COV03 for seven days, with an independent DSMB performing an interim analysis to select the dose for Phase 3. Phase 3 expands enrollment to include patients with dengue-like illnesses and compares the selected dose against placebo for clinical and virologic outcomes. Key endpoints include symptom resolution, reduction in viral load, and monitoring for adverse events.

Why it matters

Potential benefit: If successful, CP-COV03 could shorten illness, reduce viral levels, and lower the risk of complications from dengue.

How similar studies have gone: There are few proven antiviral treatments for dengue and most candidate therapies have not shown clear clinical benefit, so this antiviral approach remains relatively novel.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Patients who are 18 years or over of age at time of screening.
* Patients who have at least two symptoms with a score of 2 or higher within 72 h from fever onset.
* Patients who are diagnosed with dengue by NS1 positive (Phase 2- Part 1 only). And patients who are classified as dengue, zika, influenza, COVID-19 and others (Phase 3- Part 2 only)

Exclusion Criteria:

* Patients who show severe dengue (WHO dengue guideline C, any severe symptoms or clinical laboratory results)
* Patients who have previously received dengue vaccine
* Patients who have chronic medical conditions such as uncontrolled diabetes mellitus, severe asthma requiring oral steroids or admission to the hospital in the previous 6 months for cardiac disease

Where it's running

  • The National Hospital of Tropical Diseases (NHTD)
    Hanoi, Vietnam
    Recruiting
  • Tien Giang Provincial General Hospital
    Mỹ Tho, Vietnam
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
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Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.