Enpatoran is evaluated across multiple clinical trials spanning Phase 1, Phase 2, and Phase 3 studies sponsored by EMD Serono Research & Development Institute, Inc. and Merck Healthcare KGaA. The clinical development landscape targets autoimmune conditions—including systemic lupus erythematosus, cutaneous lupus erythematosus, dermatomyositis, and polymyositis—alongside healthy volunteers and individuals with renal impairment. Spanning recruitment statuses from completed and active to terminated, initial Phase 1 safety and Phase 2 dose-ranging trials support currently recruiting Phase 3 studies confirming efficacy in lupus populations.
| NCT Number | Recruitment | Conditions | Sponsor/Collaborators | Start Date | Phases |
|---|---|---|---|---|---|
| NCT07355218 | RECRUITING | Systematic Lupus Erythematosus; Cutaneous Lupus Erythematosus |
EMD Serono Research & Development Institute, Inc. |
2026-04-01 | PHASE3 |
| NCT07332481 | RECRUITING | Systemic Lupus Erythematosus (SLE); Cutaneous Lupus Erythematosus (CLE) |
EMD Serono Research & Development Institute, Inc. |
2026-03-10 | PHASE3 |
| NCT05540327 | ACTIVE_NOT_RECRUITING | Systemic Lupus Erythematosus |
Merck Healthcare KGaA, Darmstadt, Germany, an affiliate of Merck KGaA, Darmstadt, Germany |
2022-09-16 | PHASE2 |
| NCT06589713 | COMPLETED | Renal Impairment |
Merck Healthcare KGaA, Darmstadt, Germany, an affiliate of Merck KGaA, Darmstadt, Germany |
2024-09-24 | PHASE1 |
| NCT05650567 | TERMINATED | Dermatomyositis; Polymyositis |
EMD Serono Research & Development Institute, Inc. |
2023-01-19 | PHASE2 |
| NCT06589726 | COMPLETED | Healthy |
Merck Healthcare KGaA, Darmstadt, Germany, an affiliate of Merck KGaA, Darmstadt, Germany |
2024-09-10 | PHASE1 |
| NCT05162586 | COMPLETED | Systemic Lupus Erythematosus |
EMD Serono Research & Development Institute, Inc. |
2022-03-31 | PHASE2 |
| NCT05110027 | COMPLETED | Healthy |
Merck Healthcare KGaA, Darmstadt, Germany, an affiliate of Merck KGaA, Darmstadt, Germany |
2021-11-05 | PHASE1 |
(data from https://clinicaltrials.gov, updated on 2026-08-17)
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>).