Multiple clinical trials across early to late phases evaluate Xevinapant (AT406) across diverse indications, including head and neck squamous cell carcinoma, acute myelogenous leukemia, solid tumors, and healthy volunteer pharmacokinetics. These studies are sponsored by commercial developers such as Debiopharm International SA and EMD Serono, alongside cooperative networks and academic centers including ECOG-ACRIN and Memorial Sloan Kettering Cancer Center. While several early-phase safety and pharmacokinetic studies achieved completion, multiple advanced-phase efficacy evaluations were ultimately terminated or withdrawn.
| NCT Number | Recruitment | Conditions | Sponsor/Collaborators | Start Date | Phases |
|---|---|---|---|---|---|
| NCT06084845 | WITHDRAWN | Head and Neck Squamous Cell Carcinoma; Hypopharyngeal Squamous Cell Carcinoma; Laryngeal Squamous Cell Carcinoma; Oral Cavity Squamous Cell Carcinoma; Oropharyngeal Squamous Cell Carcinoma; Stage III Cutaneous Squamous Cell Carcinoma of the Head and Neck AJCC v8; Stage III Hypopharyngeal Carcinoma AJCC v8; Stage III Laryngeal Cancer AJCC v8; Stage III Lip and Oral Cavity Cancer AJCC v8; Stage III Oropharyngeal (p16-Negative) Carcinoma AJCC v8; Stage IV Cutaneous Squamous Cell Carcinoma of the Head and Neck AJCC v8; Stage IV Hypopharyngeal Carcinoma AJCC v8; Stage IV Laryngeal Cancer AJCC v8; Stage IV Lip and Oral Cavity Cancer AJCC v8; Stage IV Oropharyngeal (p16-Negative) Carcinoma AJCC v8 |
ECOG-ACRIN Cancer Research Group |
2024-04-12 | PHASE2 |
| NCT06463184 | WITHDRAWN | Recurrent High-grade Glioma |
H. Lee Moffitt Cancer Center and Research Institute |
2024-07-22 | PHASE1 |
| NCT06145412 | COMPLETED | Head and Neck Cancer |
Memorial Sloan Kettering Cancer Center |
2023-11-16 | PHASE2 |
| NCT06110195 | TERMINATED | Head and Neck Cancer; Head and Neck Neoplasms; Squamous Cell Carcinoma of Head and Neck |
University of Chicago |
2024-01-24 | PHASE1 |
| NCT05724602 | TERMINATED | Locally Advanced Head and Neck Squamous Cell Carcinoma |
European Organisation for Research and Treatment of Cancer - EORTC |
2023-11-15 | PHASE2 |
| NCT05930938 | TERMINATED | Squamous Cell Carcinoma of the Head and Neck |
Groupe Oncologie Radiotherapie Tete et Cou |
2023-12-12 | PHASE3 |
| NCT04459715 | TERMINATED | Squamous Cell Carcinoma of the Head and Neck |
EMD Serono Research & Development Institute, Inc. |
2020-08-07 | PHASE3 |
| NCT05386550 | TERMINATED | Head and Neck Cancer |
EMD Serono Research & Development Institute, Inc. |
2022-10-06 | PHASE3 |
| NCT06056310 | TERMINATED | Head and Neck Cancer |
EMD Serono Research & Development Institute, Inc. |
2024-01-18 | PHASE1 |
| NCT05519540 | COMPLETED | Healthy |
Merck Healthcare KGaA, Darmstadt, Germany, an affiliate of Merck KGaA, Darmstadt, Germany |
2022-09-26 | PHASE1 |
| NCT04962724 | COMPLETED | Healthy Volunteers |
Debiopharm International SA |
2021-08-02 | PHASE1 |
| NCT01078649 | COMPLETED | Cancer; Solid Tumors; Lymphoma; Malignancy |
Debiopharm International SA |
2010-03-29 | PHASE1 |
| NCT01265199 | TERMINATED | Acute Myelogenous Leukemia (AML) |
Ascenta Therapeutics |
2011-02 | PHASE1 |
| NCT01265199 | Terminated | Acute Myelogenous Leukemia (AML) |
Ascenta Therapeutics|The Leukemia and Lymphoma Society |
2011-02 | Phase 1 |
| NCT01078649 | Completed | Cancer|Solid Tumors|Lymphoma|Malignancy |
Debiopharm International SA |
2010-03-29 | Phase 1 |
(data from https://clinicaltrials.gov, updated on 2024-07-25)
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>).