Who may participate

This study is seeking healthy male participants, meaning that the participants will not have the condition being studied.

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

  • Weight of 50 kg minimum
  • Body Mass Index of 17.5 - 30.5 kg/m2
  • Non-smoker, ex-smoker, smoker (max 5 cigarettes per day)
  • Able to meet all study visit requirements 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.
The age a person must be to participate in a clinical trial.
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.
View more eligibility criteria

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

For participants in Cohorts 7 to 12 the study is planned to last for approximately 19 weeks and includes:

• A selection examination, during which you will sign a COVID ICD  and the study ICD;

• 1 treatment period of 9 days and 8 nights in the PCRU (from Day -1 to Day 8);

• 7 outpatient visits, occurring approximately 11, 15, 22, 29, 36, 50 and 71 days after the administration of the drug.

We may ask you to return to the PCRU for one additional outpatient visit after your last visit on Day 71 to collect blood samples for immunogenicity and safety assessments.

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 stays
8 nights in the Unit
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.
Long-term follow-up
7 ambulatory visits
Some studies require the study team to stay in contact with the participant for a period of time after he or she completes the main part of the study. This long-term follow up is to collect additional information on the study drug over time.
How long is the study?
Approximately 19 weeks
The length of the study includes the time from screening until the final follow-up call or study activity. There may be up to 28 days between screening and dosing.
€ 3315 upon completion of the study, + € 240 for COVID-19 inconvenience fees + transportation fees
Participants in clinical trials at the PCRU receive financial compensation for their participation. The amount depends on factors like length of the stay, total number of study visits, and the nature of the study procedures.

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.