Yearly flu shot alternative? new drug tested for Long-Term safety
NCT ID NCT07225959
First seen Jun 27, 2026 · Last updated Aug 21, 2026 · Updated 2 times
Summary
This study tests the safety of giving repeated annual doses of an experimental drug called CD388 to healthy adults. About 400 people who already tolerated one dose without serious side effects will receive two more doses over two years. Researchers will monitor for side effects and check if the body makes antibodies against the drug, which could affect how well it works.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
-
Phase 2
Tests whether the treatment actually works, and watches for side effects, in a larger group.
- Participants
-
About 400 people
The number the study aims to enrol. It can still change while the study runs.
- Started
-
Oct 2025
- Expected to finish
-
Jul 2027
An estimate. End dates often move.
- Lead sponsor
-
A company
The lead sponsor is a pharmaceutical, biotech, or medical-device company.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
-
18 to 66 years
- Sex
-
Anyone
- Healthy volunteers
-
Accepted
You do not need to have the condition being studied to take part.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: The main inclusion criteria include but are not limited to the following: * Be in stable health * Has previously completed participation in study CD388.SQ.2.05/MK-1406-004, and received a subcutaneous (SC) CD388/MK-1406 dose of either 150 mg, 300 mg or 450 mg. Exclusion Criteria: The main exclusion criteria include but are not limited to the following: * Have a contraindication to subcutaneous (SQ) injections and venipunctures (eg, bleeding disorders). * Has a known or suspected allergy or history of anaphylaxis or other serious adverse events (SAEs) to zanamivir (following administration of inhaled or intravenous formulations), monoclonal antibodies, or any of the components of CD388/MK-1406.
Get updates
Get notified about this study
Sign up to get updates when this study changes or when new studies for Healthy participants are added.
Genom att skicka in godkänner du våra Användarvillkor
Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
-
Floridian Clinical Research
Miami Lakes, Florida, 33016, United States
-
Floridian Clinical Research ( Site 0102)
Miami Lakes, Florida, 33016, United States
-
Spartanburg Medical Research
Spartanburg, South Carolina, 29303, United States
-
Spartanburg Medical Research ( Site 0101)
Spartanburg, South Carolina, 29303, United States
-
hVIVO ( Site 0001)
London, London, City of, E1 1EQ, United Kingdom
-
hVIVO Serviced Limited
London, England, E1 1EQ, United Kingdom
More trials for these conditions
Other studies related to the condition(s) this trial covers.
- Does it matter where you inject? scientists test Weight-Loss drug in arm, thigh, and belly
- New drug RO7830698 put to the test for COPD
- Three pill versions of one drug go head to head in the bloodstream
- Pfizer tests RSV vaccine aimed at older adults
- Radioactive tracer maps where a new drug goes in the body
- Radioactive tag lets scientists follow an experimental drug through the human body