The therapeutic potential of targeting the apelin-APJ signaling axis has been evaluated across several clinical trials focusing on vascular, metabolic, and renal pathologies. Early-phase clinical research, including completed studies sponsored by Imperial College London, University Hospital Basel, and the University of Edinburgh, has explored the systemic effects of apelin receptor modulation. Specific trials such as NCT01590108, NCT06277336, and NCT03956576 have completed recruitment to evaluate acute cardiopulmonary and physiological responses in human subjects. These completed Phase 1 investigations primarily target conditions including idiopathic pulmonary arterial hypertension, syndrome of inappropriate antidiuresis, hyponatremia, chronic kidney disease, cardiovascular diseases, and endothelial dysfunction.
| NCT Number | Recruitment | Conditions | Sponsor/Collaborators | Start Date | Phases |
|---|---|---|---|---|---|
| NCT06277336 | COMPLETED | SIAD - Syndrome of Inappropriate Antidiuresis; Hyponatremia |
University Hospital, Basel, Switzerland |
2024-03-01 | |
| NCT03956576 | COMPLETED | Chronic Kidney Diseases; Cardiovascular Diseases; Endothelial Dysfunction |
University of Edinburgh |
2020-02-04 | |
| NCT01590108 | COMPLETED | Idiopathic Pulmonary Arterial Hypertension |
Imperial College London |
2012-03 | PHASE1 |
(data from https://clinicaltrials.gov, updated on 2025-03-30)
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>).