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E20 – Adaptive Designs for Clinical Trials

Guideline number: E20
Draft Guideline approved (Step 2b): 25 June 2025

This topic was endorsed by the ICH Assembly in June 2018.

The E20 EWG is working on the development of a new E20 Guideline on “Adaptive Clinical Trials” on the design, conduct, analysis, and interpretation of adaptive clinical trials that provides a transparent and harmonized set of principles for the regulatory review of these studies in a global drug development program. These principles should also provide the flexibility to evaluate / discuss innovative approaches to clinical trial design throughout the development process.

Following MC approval in June 2025 the E20 Guideline title was changed to “Adaptive Designs for Clinical Trials“.

Guideline
WG Presentations / Trainings

Ongoing public consultations

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E20 Expert Working Group

Rapporteur

Dr. Gregory LevinFDA, United States

Regulatory Chair

Dr. Christian RoesEC, Europe

Experts

CPED, IsraelMs. Hanna Billig
ANMAT, ArgentinaMs. Laura Traversi
ANVISA, BrazilMs. Carolina Pingret Cintra
BIODr. Frank Bretz
BIODr. Thomas Hiemstra
EC, EuropeDr. Elina Asikanius
EC, EuropeMr. Frank Pétavy
EFPIADr. Hans Ulrich Burger
EFPIADr. Kaspar Rufibach
FDA, United StatesMr. John Scott
Health Canada, CanadaDr. Roxana Alexa
Health Canada, CanadaDr. Catherine Njue
HSA, SingaporeMs. Hui Xing Tan
HSA, SingaporeDr. Lisa Tan
IFPMAMs. Xiaoni Liu
IGBADr. Kevinkumar A. Kansagra
JPMAMr. Shuji Sumino
JPMADr. Masatoshi Nakamura
MHLW/PMDA, JapanDr. Yuki Ando
MHLW/PMDA, JapanMr. Kaito Takahashi
MHRA, UKDr. Khadija Rerhou Rantell
NMPA, ChinaDr. Mingli Heng
NMPA, ChinaMr. Jianhong Pan
PhRMADr. Vladamir Dragalin
PhRMADr. Amy Xia
PhRMADr. John Zhong
Roszdravnadzor, RussiaMr. Dmitry Gorachev
SFDA, Saudi ArabiaMr. Waleed Al-Khudhyr
Swissmedic, SwitzerlandDr. Qiyu Li
TFDA, Chinese TaipeiDr. Wen-Han Chuang
TFDA, Chinese TaipeiDr. Wei-Lun Peng
WHODr. Steve Estevão Cordeiro

Rapporteur Supporter

Dr. Alicia SherrellFDA, United States

Alternate

Ms. Inés SammartinoANMAT, Argentina
Mr. Leonardo Fábio Costa FilhoANVISA, Brazil
Ms. Nan ZhangIFPMA