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Discover 13,548 clinical trials near Boston, Massachusetts. Find research studies in your area.
Showing 4201-4220 of 13,548 trials
NCT04436276
The purpose of the study is to assess the safety, reactogenicity, and immunogenicity of Ad26.COV2.S at 2 dose levels, administered intramuscularly (IM) as a single-dose or 2-dose schedule, with a single booster vaccination administered in one cohort in healthy adults aged greater than or equal to (\>=) 18 to less than or equal to (\<=) 55 years and in adults aged \>= 65 years in good health with or without stable underlying conditions. The purpose of the study is also to assess the safety and reactogenicity of Ad26.COV2.S administered as ad hoc booster vaccination in healthy adults aged \>= 18 to \<= 55 years and in adults \>= 65 years in good health with or without stable underlying conditions.
NCT03649971
The purpose of this study is to determine the effect of treatment with guselkumab in participants with familial adenomatous polyposis (FAP) on rectal/pouch polyp burden.