Preclinical/Phase I

ICON Development Solutions provides strategy and management in support of non-clinical drug development for all Phases.

Pharmacodynamic Models


In recent years there has been increasing interest in the application of biomarkers and surrogate endpoints in healthy volunteer studies to provide pivotal information on efficacy, dose-response and time-effects of drugs.

ICON has worked extensively in this area, developing and validating models for investigating a range of therapeutic targets, as part of its own research and development efforts and in partnership with Sponsors. These techniques fall broadly into two categories:

Pharmacodynamic Models of Disease State

Use of healthy volunteer models has proven to be fast and reliable for determining if a drug has the necessary characteristics to be taken forward into more expensive patient trials. The dedicated Clinical Pharmacodynamics group at ICON has developed and validated a variety of pharmacodynamic models in a broad range of therapeutic areas including:

  • Pain (acute and chronic)
  • Inflammation
  • Appetite/Obesity
  • Anxiety
  • Cognitive Function
  • Metabolic Function/Diabetes
  • Sexual Dysfunction

Techniques Designed to Initiate Specific PD Responses

When a protocol requires the inclusion of a specific technique that is out of the normal scope of a CPU, the PD group is responsible for identifying, validating and testing the equipment. A wide list of techniques is offered by ICON covering tests for sedation, CNS imaging, physiological assessments and mood assessments.