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Behind the Scenes of Rare Disease Clinical Trials

Posting date: 25/02/2025
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Author: Inside ICON
Advancing clinical research in rare diseases requires dedication, expertise, and a deep commitment to patients who often face limited treatment options. At ICON, our teams work at the forefront of this complex and rapidly evolving field, helping to bring innovative therapies to those who need them most.

In this blog, we hear from two members of the ICON team who bring unique perspectives to this critical work. Simeon Kalinov, Project Manager Rare Disease & CNS, shares what inspired him to dedicate his career to rare disease trials and the impact he hopes to make. 

Meanwhile, Patricia Murphy, Head of Centre for Rare Diseases, takes a strategic look at the evolving landscape of rare disease research, discussing the opportunities and challenges that will shape the future of clinical development. Together, their insights offer a powerful look at why this work matters - and where it’s headed next.

What Inspired You To Work In Rare Disease Clinical Research?

Simeon: The main inspiration working in the rare disease research is the impact we have on patients’ wellbeing. The rare diseases very often lack any sort of effective treatment or medicaments which can slightly improve the quality of patients’ lives (as well as their families and caregivers which in rare diseases are also highly impacted) so any success we have during and after our trials can lead to improvement for millions worldwide. I find that really motivating. 

Can You Describe Your Role And How It Contributes To Rare Disease Studies?

Simeon: My role is Global Project Manager. It is my responsibility to lead the overall management of the trial throughout the different phases and make sure that all deliverables are on time and at the highest quality. The rare disease studies, very often, have many internal and external teams and stakeholders which makes the designs very challenging. I need to make sure that everyone completes their assigned activities in a timely fashion, within the agreed scope of work and also in collaboration with eh stakeholders along the way. 

Metaphorically said, if we imagine a machine, I need to make sure that all parts are moving together in tandem so the machine is able to start and produce the necessary outcome. 

How Does Working In Rare Disease Research Differ From Other Therapeutic Areas?

Simeon: In the years, I’ve worked on multiple indications and different therapeutic areas. What I see as difference in the rare disease research is that very often we are working in unexplored areas with scarce/lack of background knowledge or research in place. 

Taking into account that the rare diseases are scientifically very complex, that creates the prerequisites for many innovations and creativity around the design of the trials as well as the patient recruitment approaches. It is not always easy but I find that stimulates my creativity and overall development as every day you learn something new. 

Have You Witnessed Any Breakthroughs That Have Significantly Impacted Rare Disease Patients?  

Patricia: Many!  From developing patient reported outcomes that assess what is meaningful to the patients and their families for that specific disease, to finishing a pivotal study in a rare pediatric epilepsy that led to approval of a new treatment, to small things like helping a very small PAO for an ultra rare disease systematically collect data via a survey from other patients with that disease across the globe, all can be considered breakthroughs for rare disease patients.  

ICON has been involved with development programs that have led to approval of 60 new treatments for rare diseases.  Given that only about 5% of the more than 10,000 rare diseases that have been identified have approved treatments, this is impressive.  And ICON continues our research record in rare diseases, supporting 779+ studies in rare diseases in the past 5 years.  

What Are The Biggest Challenges In Conducting Clinical Trials For Rare Diseases?  

Patricia: Limited knowledge about the condition itself i.e., by Sponsors, investigators, ICON team, often even the patients and caregivers themselves.  There is often no preclinical data or animal model to understand how a potential treatment might work, and there is a need for natural history studies and registries to obtain basic, systematic data about what the disease is, its symptoms, course of illness, etc. Patient recruitment can be difficult, because of the few numbers of patients with the condition, but this is mitigated with bespoke, tailored approaches to providing access to being in a study and knowledge about how clinical trials work in general.  

What Trends Do You See Shaping The Future of Rare Disease Clinical Trials?

Patricia: In general, medicine will become more personalized with advanced therapies and precision medicines, which will be to the benefit of the rare disease clinical development landscape.  There are methods that have been used with success in Oncology (e.g., CAR-T therapies) that are now being evaluated in autoimmune disorders.  Antibody-drug conjugates are an exciting new methodology that may be useful for delivering precision medicines in a number of rare disease indications.  

What Advice Would You Give To Someone Considering a Career In Rare Disease Clinical Research?

Patricia: Learn as much as you can from patients and their advocacy organization about how the patients are living their everyday lives for every condition you want to work in. This will help provide insights into operational, logistic, and methodological approaches to progressing the clinical research in that condition.

Conclusion

Rare disease research presents unique challenges, but it also offers immense opportunities to make a meaningful impact on patients’ lives. As Patricia and Simeon have shared, success in this field requires scientific expertise, operational agility, and a deep commitment to collaboration. 

At ICON, we are proud to support innovative clinical trials that bring new hope to individuals and families affected by rare conditions. By continuing to push the boundaries of research, we can help transform the future of rare disease treatment - one breakthrough at a time.

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