[Non-clinical safety assessments using human cells for pediatric drug development]

Yuta Sakamoto1, Mitsuhiko Yamada2, Yasunari Kanda1

  • 1National Institute of Health Sciences.

Insights

New approach methodologies (NAMs) using human cell models aid pediatric drug development by improving non-clinical safety and efficacy assessments, addressing challenges like limited patient numbers in clinical trials.

Area of Science:

  • Pharmacology
  • Toxicology
  • Biotechnology

Background:

  • Pediatric drug development is critical due to unique physiological differences in children compared to adults.
  • Clinical trials in pediatric populations face challenges, including limited patient numbers.
  • Ensuring drug safety and efficacy in children requires robust non-clinical assessment strategies.

Purpose of the Study:

  • To explore the application of New Approach Methodologies (NAMs) in pediatric drug development.
  • To demonstrate the utility of human cell-based models for assessing pediatric drug safety and efficacy.
  • To discuss advancements in non-clinical assessment strategies for pediatric therapeutics.

Main Methods:

  • Utilized human cell-based models and organoids for drug development.
  • Applied in vitro models for assessing pediatric heart failure therapeutics.
  • Employed cell models for evaluating drug-induced liver injury risk in pediatric contexts.

Main Results:

  • Human cell models can recapitulate pediatric-specific characteristics for improved non-clinical assessments.
  • Demonstrated successful application of cell models in developing pediatric heart failure therapeutics.
  • Showcased the utility of in vitro models for assessing drug-induced liver injury risk in pediatrics.

Conclusions:

  • NAMs, particularly human cell models, offer promising alternatives to animal testing in pediatric drug development.
  • These models enhance the predictability of human drug responses and improve the safety and efficiency of clinical trials.
  • Continued development and implementation of NAMs are crucial for advancing pediatric drug development globally.

Related Concept Videos

Preclinical Development: Overview01:28

Preclinical Development: Overview

Preclinical development consists of a series of tests that ensure the safety and efficacy of a new therapeutic compound before it is tested in humans. There are four main phases to this process. First, safety pharmacology tests are conducted to ensure the drug does not produce any acutely harmful effects. These tests examine parameters such as bronchoconstriction, cardiac dysrhythmias, blood pressure changes, and ataxia. Next, preliminary toxicological testing is performed to determine the...
Pharmacokinetics in Pediatric Patients: Overview and Drug Absorption01:23

Pharmacokinetics in Pediatric Patients: Overview and Drug Absorption

Understanding the physiological differences in the pediatric population is crucial for effective pharmacotherapy. Neonates, infants, and children exhibit significant variations in gastric pH, gastric emptying time, intestinal transit time, and biliary function. These variations profoundly affect oral drug absorption, necessitating a nuanced approach to pediatric dosing.Neonates present with a unique physiological profile, having a gastric pH greater than 4 and faster and more irregular gastric...
Pharmacokinetics in Pediatric Patients: Drug Metabolism01:24

Pharmacokinetics in Pediatric Patients: Drug Metabolism

In pediatric care, understanding the nuances of hepatic drug metabolism is crucial, as it significantly differs from that of adults. This divergence is primarily due to the developmental stage of drug-metabolizing enzymes, which affects how medications are processed in the body. In neonates, for instance, the activity of Phase I enzymes—critical for the initial breakdown of drugs—is markedly reduced, functioning at just 20–40% of the levels seen in adults. This reduction poses a challenge in...
Toxicity Testing in Animals01:23

Toxicity Testing in Animals

Toxicity tests in animals are grounded on two main assumptions: first, the effects observed in laboratory animals can be extrapolated to humans, especially when adjusted for body surface area; second, high-dose exposure in animals is essential to identify potential human hazards from lower doses. This is based on the quantal dose-response concept, which faces the challenge of extrapolating results from relatively few test animals to much larger human populations. For example, a 0.01% incidence...
Pharmacokinetics in Pediatric Patients: Drug Excretion01:26

Pharmacokinetics in Pediatric Patients: Drug Excretion

In pediatric medicine, understanding the renal function and drug elimination nuances is crucial for administering safe and effective treatments. Newborns, in particular, display markedly slower renal functions than adults, profoundly affecting how drugs are cleared from their bodies. This slower drug clearance requires clinicians to extend the dosing intervals for many medications to prevent drug accumulation and toxicity while ensuring therapeutic efficacy.One key area where these adjustments...
Pharmacokinetics in Pediatric Patients: Drug Distribution01:17

Pharmacokinetics in Pediatric Patients: Drug Distribution

Drug distribution in the pediatric population exhibits unique challenges and considerations due to the physiological differences between children, particularly neonates and infants, and adults. A crucial aspect of pediatric pharmacology is understanding how these differences impact the pharmacokinetics of various drugs, necessitating age-specific dosing strategies to ensure efficacy and safety.Neonates and infants have a higher total body water content, ~75%–90% of their body weight, compared...