Who may participate

This study is seeking healthy male & female (Surgically sterilized or menopaused) participants, meaning that the participants will not have the condition being studied.

In addition to the criteria listed, participants must meet the following requirements:

  • Have a minimum body weight of 50 kg
  • Have body Mass Index of 17.5 - 30.5 kg/m2
  • Be a non-smoker or a smoker who smokes a maximum of 5 cigarettes per day
  • Be able to stay in the unit 8 days and 7 nights in the PCRU: From 09 Feb 2023 or 22 Feb 2023 or 08 Mar 2023


There are other requirements for participation in this study. The study staff will explain these to you during the screening process.

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.
18-70 Years
The age a person must be to participate in a clinical trial
Male & Female (Surgically sterilized or menopaused)
The sex of people who may participate in a clinical trial. Sex is a person's classification based on assignment at birth. Eligibility based on sex is distinct from eligibility based on gender
Study schedule
Screening (appointment to be scheduled during subscription); 8 days and 7 nights in the PCRU: From 09 Feb 2023 or 22 Feb 2023 or 08 Mar 2023; Follow-up Phone call

Each clinical study has its own guidelines for who can participate, called eligibility criteria. However, only the research study staff can fully determine if you qualify to enroll in the study.

What to expect

The study is planned to last for approximately 10 weeks.

Several examinations or procedures will be required in connection with the study:

  • COVID-19 risk assessment
  • A screening examination.
  • 2 treatment periods composed of 8 days and 7 nights in the PCRU (from Day-1 of Period 1 to Day 3 of Period 2). The 2 treatment periods will follow consecutively.
  • The follow-up phone call will take place 28 to 35 days after the last administration of the study drug.

You will not personally derive any benefit from your participation in this study, but the results obtained could be very important for the development of medicines and treatments which will benefit other people.

Required overnight stay
7 nights
A participant may be required to stay overnight at the PCRU for observation and study procedures. The number and length of overnight stays is determined by the design of the study
How long is the study?
Approximately 10 weeks

Interested in participating?


New to clinical research? If you’re interested in becoming a participant or need more information on the registration process, please complete and submit the registration form. We will contact you as soon as possible 

Already in our database? If you’d like to subscribe for this study, please contact us by phone. 

Studies (recruiters) For more information, call 0800/99.256 (from abroad: 0032/2. 556.70.02 or 00800/2636.2636 from France, The Netherlands, Germany, UK) or email us.  

Personal data means any information relating to you as a natural person such as for example your name, your date of birth, your telephone number or information relating to your health or your medical condition.

The personal data you share with us when completing the registration form is collected by the Brussels PCRU in order to send you the relevant literature and the medical questionnaire. It will be processed in a strictly confidential manner and in conformity with all applicable legislations, especially the European and Belgian laws applicable to clinical trials, and the European and Belgian laws applicable to personal data protection.

Personal data protection is very important to our clinical research unit. That’s why we ask that you read our Privacy Notice available at https://privacycenter.pfizer.com/en/belgium.