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Updated: Oct 31, 2025

Experimental Approaches to Tissue Engineering
Published on: August 30, 2007
Drug Development in Tissue-Agnostic Indications
Pauline du Rusquec1,2, Christophe Le Tourneau1,2,3
1Department of Drug Development and Innovation (D3i), Institut Curie, 75005 Paris, France.
Abstract:
A better understanding of cancer biology has led to the development of targeted therapies specifically designed to modulate an altered molecular pathway in the cancer cells or their microenvironment. Despite the identification of molecular targets across cancer types, most of targeted therapies were developed per cancer type. In this ancestral paradigm, randomization was the gold-standard approach for market access. Randomization of large patient populations was feasible for drugs developed in common cancer types but more challenging in rare cancer types. The traditional paradigm of drug development in oncology was further challenged by the ever-expanding molecular segmentation of cancer with ever-smaller subgroups of patients who might benefit from specific targeted therapies or immunotherapies and the identification of molecular alterations against which drugs may be effective across cancer types. In this novel drug development paradigm, novel ways of evaluating the efficacy of drugs are highly needed in these small patient populations. One approach is to use each patient as his/her own control by comparing the efficacy of a drug to the efficacy of prior treatments received. This approach allows to overcome patient heterogeneity, especially in a tissue-agnostic drug development paradigm.
Insights
Targeted cancer therapies are advancing, but traditional drug development struggles with small patient groups. Novel methods, like using patients as their own controls, are needed for rare cancers and tissue-agnostic drug development.
Area of Science:
- Oncology
- Molecular Biology
- Drug Development
Background:
- Cancer biology understanding has spurred targeted therapies modulating cancer cells or microenvironment.
- Traditional oncology drug development, often using randomization, faces challenges with rare cancers and increasing molecular segmentation.
- Smaller patient subgroups benefiting from specific therapies necessitate new evaluation methods.
Purpose of the Study:
- To address the need for novel efficacy evaluation methods in small patient populations for targeted therapies.
- To explore alternative approaches to traditional randomization in oncology drug development.
- To facilitate tissue-agnostic drug development by overcoming patient heterogeneity.
Main Methods:
- Discusses the limitations of traditional randomization in oncology drug development for small patient cohorts.
- Proposes using each patient as their own control by comparing new drug efficacy to prior treatments.
- Highlights the potential of within-patient comparisons to address patient heterogeneity.
Main Results:
- Traditional randomization is challenging for rare cancers and molecularly defined subgroups.
- Using patients as their own controls offers a viable alternative for evaluating drug efficacy in small populations.
- This approach can overcome patient heterogeneity, crucial for tissue-agnostic drug development.
Conclusions:
- Novel methods for evaluating drug efficacy are essential for targeted therapies in small patient populations.
- Employing a within-patient control design can overcome challenges posed by patient heterogeneity.
- This strategy supports the advancement of tissue-agnostic drug development paradigms in oncology.
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