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Healthy volunteers in first-in-human oncology drug development for small molecules
Begoña de Las Heras1,2, Dalila Bouyoucef-Cherchalli1, Lesley Reeve1
1Labcorp Drug Development Inc., headquarters in Burlington, North Carolina, USA.
Abstract:
This review provides tools to consider the inclusion of healthy volunteers (HVs) in first-in-human (FIH) oncology clinical trials with small molecules, including targeted and immunomodulatory agents, a strategy that was not envisioned with classic chemotherapy. To enable an FIH oncology trial in HVs compared to cancer patients (CPs), a robust nonclinical package must be generated, which includes toxicokinetic and pharmacokinetic studies, as well as more extensive safety pharmacology, toxicology and genotoxicity studies. This strategy could provide an early clinical characterization of the pharmacokinetic parameters and clinical safety profile in the absence of comorbidities and concomitant medication. It also avoids the ethical issue of administrating subtherapeutic doses to CPs, and could potentially help to accelerate the timelines of clinical drug development for patient care. That being said, stakeholders involved in these studies need to proceed with caution, fully understand the regulatory guidance and thoroughly evaluate the benefits and risks. This paper serves to address the regulatory guidance and other considerations needed when using healthy volunteers in early oncology trials.
Insights
This review explores using healthy volunteers (HVs) in early oncology trials for small molecules. This approach offers early safety and pharmacokinetic data, potentially accelerating drug development for patients.
Area of Science:
- Oncology
- Clinical Pharmacology
- Drug Development
Background:
- Traditional early oncology trials primarily used cancer patients.
- Small molecules (targeted, immunomodulatory) present new opportunities for early volunteer studies.
- Classic chemotherapy did not anticipate using healthy volunteers in early trials.
Purpose of the Study:
- To provide guidance on incorporating healthy volunteers (HVs) into first-in-human (FIH) oncology trials for small molecules.
- To address the benefits and risks of using HVs in early oncology drug development.
- To outline the necessary nonclinical data package for FIH oncology trials in HVs.
Main Methods:
- Review of regulatory guidance and ethical considerations for HV use in oncology.
- Analysis of nonclinical study requirements (toxicokinetics, pharmacokinetics, safety pharmacology, toxicology, genotoxicity).
- Comparison of trial designs involving HVs versus cancer patients (CPs).
Main Results:
- A robust nonclinical package is essential for FIH oncology trials in HVs.
- Early characterization of pharmacokinetics and safety is possible in HVs without comorbidities.
- This strategy avoids ethical concerns of sub-therapeutic dosing in CPs.
Conclusions:
- Using HVs in early oncology trials with small molecules is a viable strategy.
- Careful consideration of regulatory guidance, benefits, and risks is crucial for stakeholders.
- This approach may accelerate clinical drug development timelines for patient benefit.
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