The Cytel blog keeps you up to speed with the latest developments in biostatistics and clinical biometrics.

Interview: Clinical Trial Optimization with R

November 28, 2017

 

In this blog we turn to some reading matter, and interview Gautier Paux and Alex Dmitrienko about the recent book 'Clinical Trial Optimization with R'.  The book explores a unified and broadly applicable framework for optimizing decision making and strategy selection in clinical development, through a series of examples and case studies. To learn more, read on for Paux and Dmitrienko's insights.

Read More

The Cytel Story: In the Co-Founders' Own Words

November 9, 2017

 In this blog we are excited to unveil a new project which we have been hard at work on over the last few months. 

2017 marks a very special milestone for Cytel – our 30th anniversary.  Cyrus Mehta and Nitin Patel founded Cytel in 1987 with an initial objective to solve a specific problem in computational statistics.

Read More

Accelerating development with combined SAD/MAD approach

January 30, 2017

Single ascending dose (SAD) and multiple ascending dose (MAD) studies are typically the first in human studies.  They seek to gain information on safety and tolerability, general pharmacokinetic (PK) and pharmacodynamic ( PD)  characteristics, and of course identify the maximum tolerated dose (MTD).

Conventionally, SAD  and MAD studies were conducted separately, but increasingly are combined into an ‘umbrella’ protocol which addresses both SAD and MAD objectives.

Read More

How to get the regulatory green light for your adaptive design?

January 23, 2017

As a group, Cytel had over 40 successful regulatory interactions last year, many of which supported approvals for innovative trial design approaches.  In this blog we look at some of the key success factors for regulatory interactions regarding adaptive designs.

Read More

Blinded SSR in early phase biosimilar studies

April 7, 2016

 

 Francois Beckers, Global Head of Biostatistics & Epidemiology at Merck KGaA joined us at the East User Group Meeting in March and presented case studies of Merck KGaA’s experiences with Blinded Sample Size Re-estimation in early phase studies, more specifically in the context of biosimilar studies.

 

Read More

Decision Making in Early Clinical Development

March 29, 2016

On March 16th and 17th the 5th East User Group Meeting took place in London.  This very successful 2 days saw a variety of talks on aspects of clinical trial design innovation.  Over the next couple of weeks, we will be reviewing some of the key topics which were addressed during the meeting.

In this post, we'll take a look at Paul Frewer of Astrazeneca's presentation on Decision Making in Early Phase Clinical Development.  This talk was very well received by the delegates and prompted plenty of discussion afterwards. 

Read More

Cytel Case Studies Series #1: Using Simulation for Accelerated Early Phase Drug Development

September 4, 2015

Our Client's Challenge:

Can knowledge of the relationship between biomarkers and clinical endpoints help us to optimize an early development program and improve the probability of selecting the right dose in Phase 3?

Our client approached us hoping to expedite dose-finding with biomarkers in Phase 1b, and to design an optimal Phase 2b clinical endpoint trial to maximize probability of correct Phase 3 dose selection.

Read More

Dose-finding with Sequential Parallel Comparison Designs

April 23, 2015

Last week the Cytel Blog discussed the benefits of using the Adaptive Maximizing Design [AM Design] for dose-finding trials involving clinical utility limiting therapies. However, there are other ways that a dose-finding trial can make use of frequent-adaptation maximizing designs. Here we look at what happens to early phase clinical development when an AM Design combines with another adaptive design that is slowly gaining popularity, namely the Sequential Parallel Comparison Design. 

Read More