Multiple clinical trials evaluate green tea formulations containing catechins across Phase 1 through Phase 3 and unassigned phase classifications. These studies address diverse indications, including metabolic inflammation and endotoxemia in obesity, steroid profiling in healthy volunteers for sports doping control, progression of multiple system atrophy, and diabetic nephropathy with hypertension. Sponsored primarily by academic institutions, research foundations, and anti-doping organizations, these registered trials include completed studies alongside those with unknown recruitment status.
| NCT Number | Recruitment | Conditions | Sponsor/Collaborators | Start Date | Phases |
|---|---|---|---|---|---|
| NCT03413735 | Unknown status | Obesity|Endotoxemia|Inflammation |
Ohio State University |
2018-08-29 | Not Applicable |
| NCT02779361 | Completed | Healthy Volunteers|Doping in Sports |
Parc de Salut Mar|World Anti-Doping Agency |
2016-01 | Phase 1 |
| NCT02008721 | Completed | Multiple System Atrophy |
Dr. Johannes Levin|German Center for Neurodegenerative Diseases (DZNE)|Deutsche Parkinson Vereinigung|German Foundation for Neurology|ParkinsonFonds Deutschland gGmbH|Ludwig-Maximilians - University of Munich |
2014-01 | Phase 3 |
| NCT01923597 | Completed | Diabetic Nephropathy|Hypertension |
University of Campinas Brazil |
2013-11 | Phase 2 |
(data from https://clinicaltrials.gov, updated on 2024-05-22)
Mechanism and Biochemical Profile
Appendix RUO and cGMP Quality Standards
| Quality Dimension | RUO (Research Use Only) | cGMP (Current Good Manufacturing Practice) |
|---|---|---|
| Clinical Applicability | Prohibited in human clinical trials or medical diagnostics. | Mandatory for human clinical trials (Phase I–III) and therapies. |
| Regulatory Status | Non-regulated grade; exempt from drug manufacturing laws. | Legally enforced by health authorities (e.g., FDA, EMA, NMPA). |
| Facility Environment | Unclassified analytical or research laboratories. | Validated Cleanrooms (ISO Class 5–8) with continuous monitoring. |
| Quality Control | Basic purity and activity testing. | Rigorous safety release testing (Sterility, Endotoxin, Mycoplasma). |
| Process Validation | Basic equipment calibration; no process validation required. | Full qualification (IQ/OQ/PQ) and complete batch records. |
| Quality Assurance | Vendor self-declared without required formal QMS. | Mandatory QA/QC unit, Change Control, CAPA, and vendor audits. |
| Regulatory Impact | High risk of IND rejection if used as a critical raw material. | Required for IND/NDA filings, supported by Drug Master Files (DMF). |
Footnotes
Regulatory Note: Governed by FDA (21 CFR Parts 210/211/312), EMA (EudraLex Vol 4), ICH Guidelines (E6/Q7/Q9/Q10), and compendial standards (USP <71>/<85>/<1043>).