Treatment of Long COVID Symptoms Utilizing Autologous Stem Cells Following COVID-19 Infection

The proposed study is a randomized single-center, double-blinded, placebo controlled standard of care plus study. Each participant will continue to receive standard of care treatment for their current diagnosis and be afforded the opportunity to add any additional care as needed that may include care for behavioral health concerns. In the proposed study, safety of a single administration of expanded autologous lines at a total dose exposure of 150 million cells ("ATCell™") will be assessed. Each ATCell™ cell batch will be derived from ex vivo expanded stromal vascular fraction (SVF) of a participant's own adipose tissue. SVF is collected by liposuction and expanded. Briefly, ATCell suspended in Lactated Ringer's with 5% dextrose solution, or a placebo of Lactated Ringers 5% dextrose solution will be administered once to each participant. Safety will be evaluated through clinical assessments and laboratory test results comparing treatment cohort participant's baseline assessments and laboratory test results. Following completion of follow up period as defined in the schedule of events, the study will be unblinded, the results reviewed by the Institutional Review Board (IRB) and Human Research Protection Program (HRPP). Once safety has been reviewed by IRB/ HRPP, the study will be unblinded and participants that received the placebo treatment will be offered the opportunity to crossover and receive 150 million cell ATCell™ autologous treatment with the same monitoring and clinical support afforded to the first treatment cohort.