Sep 2, 2016 10:30:00 AM
Aug 31, 2016 1:11:57 PM
Traditional rule-based approaches to dose escalation such as 3+3 are widely used in early clinical development. They can be appealing due to the simplicity of execution. However, estimates produced may be highly variable and the targeting of true Maximum Tolerated Dose may be poor. Bayesian dose escalation approaches in early phase trials can offer an effective alternative to determining the maximum tolerable dose of a new drug more quickly, as well as ensuring that all of the information available to trial clinicians is taken into account so that the patients enrolled in the trial receive the best possible treatment.
Aug 26, 2016 11:30:00 AM
At the recent JSM in Chicago, Cytel’s Sam Hsaio and Lingyun Liu alongside Genentech's Romeo Maciuca, presented a framework for inference in adaptive bioequivalence trials with unblinded sample size re-estimation.
In bioequivalence trials where the variance is often unknown, and the sample size small, using boundaries derived under the assumption of a normally distributed test statistic may lead to type I error inflation. This problem can be overcome with p-value combination methods, however these approaches generally do not directly provide confidence intervals for the geometric mean ratio on the scale of the original pharmacokinetic endpoint.
Aug 23, 2016 9:00:00 AM
At the recent JSM meeting in Chicago, Cytel's Jim Bolognese presented the results of work he has conducted evaluating the T-Statistic ( or T-Stat) method for adaptive dose finding of MTD. In this blog we'll provide a brief summary of Jim's findings, and share his slides with our blog readers.
Aug 17, 2016 11:57:43 AM
Following the recent publication of their review article Adaptive Designs for Clinical Trials in the New England Journal of Medicine, co-authors Cyrus Mehta ( President and Co-Founder of Cytel, and Adjunct Professor of Biostatistics at Harvard University) and Deepak L. Bhatt M.D C M.P.H. (Executive Director of Interventional Cardiovascular Programs, Brigham and Women’s Hospital Heart and Vascular Center) were invited to participate in a live video discussion with the journal.
Aug 9, 2016 9:00:00 AM
At the recent JSM Meeting, Cytel’s Yannis Jemiai presented the case study of the VALOR trial which used a promising zone design. At the time of the study, existing therapy for relapsed or refractory AML was generally unsatisfactory with no approved drugs available for patients, and a very poor prognosis. Vosaroxin was a first-in-class anticancer quinolone derivative which had previously been studied in a single arm Phase 2 study. In this blog we'll take a look at the operational and regulatory considerations in the implementation of this trial, which were highlighted during Jemiai's talk.
Jul 20, 2016 8:30:00 AM
The Joint Statistical Meetings is the largest and arguably most highly respected gathering of statisticians in the world. It will bring together over 6000 statisticians for this year’s event in Chicago. As a large meeting, it can be a challenge to navigate and find the sessions which are going to be most valuable for your work. To help out, we've asked some of the leading lights of our statistical group which sessions are their top picks this year.
Jun 16, 2016 10:23:00 AM
Predicting the course of a clinical trial is something which people will always want to do-whether for statistical reasons, planning reasons or business reasons. In this blog we look at examples of where prediction goes off course, and how we can resolve these issues. We also share valuable video and slidedeck resources from our VP Consulting and Software, Yannis Jemiai.
May 31, 2016 7:30:00 AM
Last week, we were delighted to announce the release of East 6.4 bringing further cutting –edge approaches to the East user community. East is the industry standard platform for clinical trial design, simulation, and monitoring, improving scientific productivity during the critical planning stages of clinical development. In this blog we catch up with Yannis Jemiai, VP of Cytel to gain some behind-the-scenes insights into the development and new features of this important release.
May 26, 2016 11:37:20 AM
A number of the Cytel team were in Berlin 22nd- 25th May for the PSI Annual conference. The PSI Conference is an important forum for statisticians and we found this year's event to be energetic, technically interesting and well attended. In this blog, we’ll summarise some of the particular highlights from the sessions that our team members attended.
Apr 28, 2016 12:30:00 PM
Adaptive Designs in Practice: Interview with NIHR Research Fellow Munya Dimairo
NIHR and University of Sheffield researchers recently published a paper, ‘Adaptive designs undertaken in clinical research: a review of registered clinical trials’(Hatfield et al) which explores the current state of adaptive designs in practice. In this blog we catch up with Munya Dimairo, NIHR Research fellow and one of the paper’s co-authors to find out more.