Shaping the future of drug development
Improving the design and implementation
of clinical trials
Powering your trial to success
Comprehensive software solutions for
designing and running your trials
Expertise and experience
Succeed in your clinical development with
our design and implementation advice
Getting it right the first time
Providing expertise and experience to
get you the best information from your trial


Rigorously tested and continuously validated in practice, Cytel software is used at thousands of pharmaceutical, biotech, medical device companies, and leading independent research institutes.


Cytel’s cutting-edge trial design and implementation expertise, with a specialty in adaptive trials, is helping sponsor companies of all sizes to increase success rates in clinical development.


For proven product development knowledge and experience, rely on our global multi-disciplinary teams – biostatisticians, operations experts, data managers, programmers and medical writers.

Latest News & Events

Cytel Broadens Clinical Trial Services with New Waltham, MA, Office

Cytel opens a new office in Waltham, MA, The additional space is required to support the company’s rapidly expanding Clinical Research Services.

Just Published in Nature Journal

Cyrus Mehta, Cytel president and co-founder, co-authored new paper on emerging Efficacy-to-Effectiveness trials in Nature's Clinical Pharmacology & Therapeutics.

Adaptive Trial Short Course, April 25 at Harvard School of Public Health

Learn adaptive sample size re-estimation designs from Cytel's Cyrus Mehta and Charles Liu. Workshop attendees receive a free 90-day trial of new East® 6.2. Registration is fast and affordable.

What Clients Say

Cytel’s work on the trial design, simulations and FDA discussions were instrumental in obtaining the regulatory acceptance for our proposed, ground-breaking methodology.

Implementation was smoother thanks to their experience with adaptive population enrichment strategies.

Simona Skerjanec, VP Medical Science
The Medicines Company

Cytel’s innovative, yet practical adaptive design provided multiple favorable scenarios allowing us stage the Phase 3 VALOR leukemia treatment trial based on sample size re-estimation.

Difficult to imagine our going forward with traditional methods alone.

Steven B. Ketchum, VP Research and Development
Sunesis Pharmaceuticals

Working with Cytel allowed our team to move forward from research to reality swiftly.

We now have the tools to guide our innovative trial decision-making much more efficiently and knowledgably.

Joe Heyes, VP
Early Stage Biostatistics Merck

To my knowledge, Fulyzaq® is the very first approved treatment following a two-stage adaptive pivotal study.

There’s no question that without Cytel we wouldn’t have achieved that. You have been very service-oriented and responsive throughout.

Dr. Scott Harris, CMO
Napo Pharmaceuticals

We learned controlling critical operational variables with ongoing collaboration – especially between data managers and statisticians – was crucial to trial success.

We even saved 20% by outsourcing the key data analytics, medical writing and submission preparation functions with Cytel.

Dr. Patrice Rioux, VP, CMO
Raptor Pharmaceuticals

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