Evaluating the Human Immune Response to the JYNNEOS Vaccine
- Registration Number
- NCT06366672
- Lead Sponsor
- Washington University School of Medicine
- Brief Summary
This study is designed to evaluate the magnitude and duration of the human adaptive immune response to the JYNNEOS Modified Vaccinia Ankara-Bavarian Nordic (MVA-BN) vaccine in the blood, lung mucosa, skin and bone marrow.
- Detailed Description
Orthopoxvirus vaccination leads to very high magnitude antigen-specific T cell responses and neutralizing antibody responses that can be detected in blood decades after vaccination. Despite a large number of previous studies of human immune responses to Modified Vaccinia Ankara (MVA) vaccination in blood, very few of these previous studies evaluate the human...
Recruitment & Eligibility
- Status
- RECRUITING
- Sex
- All
- Target Recruitment
- 20
Inclusion Criteria
- 18-60 year old otherwise healthy participants
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Exclusion Criteria
- Prisoners
- Participants unable to provide full written informed consent
- Previous receipt of a smallpox or monkeypox vaccine
- Previous infection with monkeypox
- Receipt of any vaccine in the 28 days prior to the first study procedure or planned receipt of any vaccine outside of those provided in the current study before completion of the study day 42 visit.
- Immunocompromise (primary or secondary due to other medical conditions or medications)
- Previous organ transplant
- Active malignancy
- Pregnancy
- < 4 weeks post-partum or actively breastfeeding
- Female participants who are not actively on hormonal contraception or do not have an intrauterine device in place
- Body Mass Index > 40
- Current smokers
- History of a known chronic pulmonary, cardiovascular, renal, hepatic, hematologic or metabolic disorder. Participants with isolated treated hypertension as the only cardiovascular disorder may be included in the study.
- History of a chronic neurologic or neurodevelopmental condition. This does not exclude potential participants with chronic back pain or previous disk herniation/back surgery, only participants with documented weakness, quadriplegia or paraplegia. This exclusion criterion also does not exclude from the study participants with recurrent migraine headaches as the only chronic neurologic condition.
- Pulse oxygen saturation value of 92% or less on room air at study enrollment or on the day of bronchoscopy
- Any significant infiltrate or pleural effusion on upright posterior-anterior and lateral chest x-ray imaging performed on the day of bronchoscopy
- International Normalized Ratio value greater than 1.4 or a Partial Thromboplastin Time value of greater than 40 seconds at study enrollment
- Platelet count of less than 100,000 at study enrollment
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Study & Design
- Study Type
- INTERVENTIONAL
- Study Design
- SINGLE_GROUP
- Arm && Interventions
Group Intervention Description MVA-BN vaccinated Skin punch biopsy MVA-BN vaccine administered: day 0 and day 28 Phlebotomy: within 30 days prior to first vaccine dose, day 0, day 14, day 28, day 35, day 42, day 56, day 90, day 110, day 150, day 210, day 395 Research bronchoscopy: within 30 days prior to first vaccine dose, day 42, day 210, day 395 Skin punch biopsy: within 30 days prior to first vaccine dose, day 42, day 210, day 395 Bone marrow aspiration: within 30 days prior to first vaccine dose, day 56, day 110, day 210, day 395 MVA-BN vaccinated JYNNEOS (Smallpox and Monkeypox Vaccine, Live, Nonreplicating) suspension for subcutaneous injection MVA-BN vaccine administered: day 0 and day 28 Phlebotomy: within 30 days prior to first vaccine dose, day 0, day 14, day 28, day 35, day 42, day 56, day 90, day 110, day 150, day 210, day 395 Research bronchoscopy: within 30 days prior to first vaccine dose, day 42, day 210, day 395 Skin punch biopsy: within 30 days prior to first vaccine dose, day 42, day 210, day 395 Bone marrow aspiration: within 30 days prior to first vaccine dose, day 56, day 110, day 210, day 395 MVA-BN vaccinated Phlebotomy MVA-BN vaccine administered: day 0 and day 28 Phlebotomy: within 30 days prior to first vaccine dose, day 0, day 14, day 28, day 35, day 42, day 56, day 90, day 110, day 150, day 210, day 395 Research bronchoscopy: within 30 days prior to first vaccine dose, day 42, day 210, day 395 Skin punch biopsy: within 30 days prior to first vaccine dose, day 42, day 210, day 395 Bone marrow aspiration: within 30 days prior to first vaccine dose, day 56, day 110, day 210, day 395 MVA-BN vaccinated Bone marrow aspiration MVA-BN vaccine administered: day 0 and day 28 Phlebotomy: within 30 days prior to first vaccine dose, day 0, day 14, day 28, day 35, day 42, day 56, day 90, day 110, day 150, day 210, day 395 Research bronchoscopy: within 30 days prior to first vaccine dose, day 42, day 210, day 395 Skin punch biopsy: within 30 days prior to first vaccine dose, day 42, day 210, day 395 Bone marrow aspiration: within 30 days prior to first vaccine dose, day 56, day 110, day 210, day 395 MVA-BN vaccinated Research bronchoscopy MVA-BN vaccine administered: day 0 and day 28 Phlebotomy: within 30 days prior to first vaccine dose, day 0, day 14, day 28, day 35, day 42, day 56, day 90, day 110, day 150, day 210, day 395 Research bronchoscopy: within 30 days prior to first vaccine dose, day 42, day 210, day 395 Skin punch biopsy: within 30 days prior to first vaccine dose, day 42, day 210, day 395 Bone marrow aspiration: within 30 days prior to first vaccine dose, day 56, day 110, day 210, day 395
- Primary Outcome Measures
Name Time Method Change in magnitude of the MVA-BN antigen-specific antibody response in blood plasma Change from day 42 to day 395 Change in magnitude of the MVA-BN antigen-specific T cell response in the blood Change from day 42 to day 395
- Secondary Outcome Measures
Name Time Method Change in magnitude of the MVA-BN antigen-specific antibody response in bronchoalveolar lavage fluid Change from day 42 to day 395 Change in magnitude of the MVA-BN antigen-specific T cell response in the lower airways Change from day 42 to day 395
Trial Locations
- Locations (1)
Washington University in Saint Louis School of Medicine Emergency Care and Research Core
🇺🇸Saint Louis, Missouri, United States