Considerations for Implementing Precision Therapeutics for Children

Area of Science:

• Pharmacology
• Pediatric Medicine
• Genetics

Background:

• Individual variability in drug response is influenced by genetic factors and ontogeny (age-specific developmental changes).
• Pediatric patients exhibit unique developmental trajectories impacting drug disposition and efficacy.
• Current approaches often focus on dose-exposure relationships, potentially overlooking individual response variations.

Purpose of the Study:

• To emphasize a shift towards response-based therapeutic strategies in pediatric pharmacologic agent utilization.
• To highlight the importance of understanding both genetic and ontogenic contributions to drug variability.
• To advocate for the development of tools for individualizing drug response in children.

Main Methods:

• Reviewing the impact of genetic factors on drug metabolism and target receptor sites.
• Analyzing age-specific developmental changes (ontogeny) affecting drug exposure and response.
• Discussing the utility of concentration-controlled studies for identifying optimal therapeutic exposures.

Main Results:

• Genetic and ontogenic factors significantly contribute to inter-individual variability in pediatric drug response.
• Understanding drug target receptor expression and binding affinity is key to achieving desired therapeutic outcomes.
• Concentration-controlled studies offer a pathway to individualize drug exposure based on patient-specific factors.

Conclusions:

• A response-centered approach, informed by genetics and ontogeny, is essential for optimizing pediatric pharmacologic treatments.
• Developing tools to personalize drug delivery across the pediatric age spectrum is a critical unmet need.
• Individualized pediatric medicine can lead to significant, lifelong benefits for patients.