| Recruiting | 4 | 75 | US | Flu Vaccine (Year 1), FluzoneĀ® Quadrivalent High-Dose, Flu Vaccine (Year 2), FLUAD, Flu Vaccine (Year 3), Flublok Quadrivalent | The Jackson Laboratory, UConn Health, Icahn School of Medicine at Mount Sinai, Weill Medical College of Cornell University, University of Chicago, National Institute of Allergy and Infectious Diseases (NIAID) | Aging, Influenza Vaccine, Dendritic Cell, Vaccine Response | 12/26 | 12/26 | | |
| Recruiting | 2 | 50 | US | MitoQ (mitoquinol mesylate), MitoQ, Placebo | Iman Al-Naggar, PhD, National Institute on Aging (NIA), American Urological Association, Urology Care Foundation, Claude D. Pepper Older Americans Independence Center (OAIC) | Lower Urinary Tract Symptoms, Overactive Bladder Syndrome | 12/25 | 12/25 | | |