Clinical Trials


His respiratory health could have paused adventures with his best friend.

Every morning, they clock three miles before sunrise.

That is what drives us. Experience, Rho.

Respiratory Expertise

In recent times, the prevalence of respiratory diseases has dramatically increased due to a combination of lifestyle choices and environmental pollutants. Worldwide, asthma affects more than 300 million people, and lung conditions such as COPD kill more than 3 million people every year. The symptoms of these conditions can have significant impacts on the quality of life for patients and their caregivers, affecting them physically and mentally.

Clinical trials in this therapeutic area present a multitude of challenges and require the clinical expertise of a seasoned respiratory CRO. And when it comes to respiratory diseases such as asthma, cystic fibrosis and COPD, the nuances and additional technical knowledge required for the handling of various instruments for disease management can make executing successful respiratory clinical trials seem like a daunting task.

Global Reach

Our global client solutions will ensure you reach your patients, wherever they are. With international capabilities that span 5 continents, we provide full-service capabilities to execute your clinical development programs and trials across the globe.

Why Choose Rho?

Committed to Respiratory Research

Rho has a deep and long-standing commitment to respiratory clinical research services, having supported groundbreaking research in inner-city asthma and peanut allergies beginning in 1997. Drawing on this dedication and exceptional experience, our project teams understand what it takes to successfully enroll and execute respiratory studies.

With any respiratory program, building and maintaining strong relationships is critical. For this reason, we make a concerted effort to keep our cross-functional respiratory teams together over the course of multiple studies—aiding development of our therapeutic indication expertise.

Along with conducting inpatient and outpatient studies, we have experience coordinating standard of care with study-specific procedures and assessments, as well as interacting with multidisciplinary care teams. Through our extensive respiratory therapeutic expertise, we have developed strong relationships with high-performing and high-enrolling sites equipped with trained investigators and staff – allowing us to consistently meet or exceed our sponsors’ start-up timelines.

Our cross-functional, collaborative approach allows us to identify challenges earlier, de-risk your development strategy, and eliminate the missteps and delays often caused by silos and handoffs – ultimately ensuring a consistent program that runs smarter and more efficiently.

Rho not only gave Anthera a clear picture of how their team would fulfill the study needs, but showed their knowledge and expertise of the [Cystic Fibrosis] indication as well as the protocol in a way that made them a collaborative partner rather than a service provider.

Former VP of Clinical Operations at Anthera

Join us in our commitment to respiratory research as we passionately fight to help those affected by respiratory diseases breathe a little easier. We proudly invite you to experience Rho.


Our Expertise


clinical trials


clinical sites



Expertise in Action

Cystic Fibrosis

Rho has developed relationships with 75+ CF research centers globally, including CFF-TDN, ECFS-CTN and CanACT networks and has led 11 cystic fibrosis studies and 1 marketing application submission effort in the past 3 years.

Rho’s experts have experience with all types of CF studies including gene therapy, phage, PERT/GI, oral and inhalation studies, in-patient, and anti-infectives. Additionally, Rho has expertise with common CF assessments and endpoints, including gene therapy, FEV1/FVC,  spirometry, MCC/LCI, CFQ-R/CRISS, CFA/CNA, and sputum collection.

Following study start-up for a Phase III cystic fibrosis study, the Cystic Fibrosis Foundation Therapeutics Development Network (CFF TDNCC) conducted a survey of participating clinical sites to assess their satisfaction with Rho. Some highlights include:

  • 100% of sites ranked Rho as good or excellent for 6 of the 7 questions asked. For the seventh question, 90% of sites ranked Rho as good or excellent.
  • On all questions, Rho scored higher than the CFF TDNCC average.
  • “Rho is tremendous! Their people put in the extra effort to get our site initiated over a weekend in order to make it easier for a subject.”

Learn more about our commitment to cystic fibrosis research as we passionately fight to find a cure.


Rho has supported more than 50 asthma trials over the past 3 decades and we offer full-service clinical trial solutions for adult and pediatric populations. We have proven metrics demonstrating study start-up and enrollment timelines that consistently exceed projections for our sponsors.

  • 80+ clinical studies
  • 800+ sites
  • 70K+ patients

As a measure of the value of Rho’s contributions to allergy and asthma research, Rho allergy and asthma staff have co-authored over 90 manuscripts, including several in high-impact journals, such as the New England Journal of Medicine, Nature Immunology, and Science Translational Medicine.

Additional Indication Expertise

  • Allergic Rhinitis
  • COPD
  • Emphysema
  • Lung Cancer
  • Lung Transplantation
  • Pneumonia
  • Pulmonary Hypertension
  • Respiratory Infections
  • Sleep Apnea


Case Study: Rho and Anthera Pharmaceuticals’ Collaborative Partnership in Cystic Fibrosis

In this case study, Rho and Anthera Pharmaceuticals collaborated in developing a product to treat Cystic Fibrosis. Read more about this partnership.

Success Stories

Research Success During the 2009 H1N1 Pandemic

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Rho Works with CF Patient Advocacy Group to Develop Strong Relationships with Key Sites

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