PLX51107 has been evaluated across several clinical trials investigating its potential as monotherapy and in combination regimens with azacitidine. These early-phase (Phase 1 and Phase 1/2) studies—sponsored by industry partner Plexxikon alongside academic sites like M.D. Anderson Cancer Center—targeted solid tumors, steroid-refractory acute graft-versus-host disease, acute myeloid leukemia, myelodysplastic syndromes, and non-Hodgkin lymphoma. Recorded outcomes reflect varying recruitment statuses across the clinical portfolio, with certain studies completed while others were terminated.
| NCT Number | Recruitment | Conditions | Sponsor/Collaborators | Start Date | Phases |
|---|---|---|---|---|---|
| NCT04910152 | TERMINATED | Acute Graft Versus Host Disease; Steroid Refractory Graft Versus Host Disease |
Hannah Choe, MD |
2022-04-19 | PHASE1; PHASE2 |
| NCT04022785 | COMPLETED | Acute Myeloid Leukemia; Myelodysplastic Syndrome; Myelodysplastic/Myeloproliferative Neoplasm; Myeloproliferative Neoplasm |
M.D. Anderson Cancer Center |
2019-09-09 | PHASE1 |
| NCT02683395 | TERMINATED | Solid Tumors; Acute Myeloid Leukemia; Myelodysplastic Syndrome; Non-Hodgkin's Lymphoma |
Plexxikon |
2016-03 | PHASE1 |
| NCT02683395 | Terminated | Solid Tumors|Acute Myeloid Leukemia|Myelodysplastic Syndrome|Non-Hodgkin''s Lymphoma |
Plexxikon |
2016-03 | Phase 1 |
(data from https://clinicaltrials.gov, updated on 2025-01-28)
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>).