About pRxEngage
pRxEngage exists to make clinical trials clear and accessible for people living with a condition. We connect people, community organisations, research sites, and industry through trust, plain language, and meaningful engagement.
Our Story
pRxEngage began with a personal loss.
Losing a close friend to a condition with limited treatment options exposed a pain many go through: even when clinical trials exist, the people who might benefit never get the chance to benefit. Often they never hear about them, or cannot make sense of what participation really involves.
Through our founder’s work in clinical research, this gap became impossible to ignore. Good studies were struggling to reach people, not because of a lack of science, but because information was unclear, distant, or difficult to navigate.
pRxEngage was created to change that. We focus on trust, transparency, and plain language so people and communities can explore clinical trials on their own terms, without pressure or confusion.
Many of the people building pRxEngage live with conditions themselves. This work is not abstract for us. It’s personal. That perspective shapes how we design, communicate, and show up every day.
A note on Sylvester
Sylvester was more than a friend. He was the reason this work began.
We lost him too young to sickle cell disease, but his memory continues to guide everything we do.
Our Promise
- Transparency: We are open about what we do, how information is used, and what happens next. Nothing is hidden, and nothing is misleading.
- Respect: Every person is treated with dignity. There is no pressure to take part, no judgement, and no assumption about what someone should do.
- Accessibility: Clinical trial information should be easy to understand. We use plain language and inclusive design so people of all backgrounds and education levels can engage.
- Accountability: We sWe take responsibility for how our platform is used. We support high-quality research while protecting trust between people, communities, and research teams.
- Empowerment: People should feel informed and in control. Our role is to support confident decision-making, whether someone chooses to take part in a trial or not.
Our team
Keith Berelowitz is the Founder of pRxEngage, a company redefining patient engagement and retention in clinical trials using living experience, proven methods, and AI.
With over two decades of experience in pharmaceutical and biotechnology clinical research, patient engagement, and health technology, Keith focuses on operational excellence and patient-centric research.
Before founding pRxEngage, Keith launched patientRx Ltd., a consultancy optimizing clinical trials through technology-enhanced patient engagement. He previously served as Operations and Commercial Director at Richmond Pharmacology, where he led teams to achieve significant revenue growth and global recognition for the site.
Additionally, Keith currently chairs the Fulham Research Ethics Committee (Health Research Authority) and has held advisory and committee roles including EUCROF Early Phase Working Group Chair and CCRA Executive Committee member. Keith leverages his extensive experience to commercialise technology-driven solutions that make clinical research more inclusive, efficient, and collaborative.
David’s most recent venture was at REPAY, and prior to that served as the Chief Information Officer and Chief Information Security Officer of Sharecare with oversight of security, IT systems, and M&A assessments for the company.
Prior to joining Sharecare, he held leadership roles with various private and public companies. These included Chief Technology Officer of MedCast/WebMD with a focus on Webmd.com consumer content and delivery technologies, Chief Technology Officer of PGi, where he led all global technology operations, research and development, product innovations and the integration of numerous acquired technologies.
Additionally, he has served on numerous executive boards and held advisory positions for healthcare IT, communication services companies and electronic payment processors.
David received his Bachelor of Science in Management and Information Systems from the University of Tennessee.
David brings a balance of technical expertise and board-level communication skills.
“I am excited to improve healthcare by leveraging pRxEngage to streamline the management of patient trials using the latest cloud and AI technologies, making life-enhancing and life-saving treatments more accessible to patients.”
Daniel has been a senior executive in 5 enterprises and helped lead 3 successful exits. Prior to Voxco, was the CEO of Allbound, a VC backed software company that successfully exited to a PE firm.
Currently serving as the CEO of Voxco, a PE backed global leader in survey tools for researchers.
Prior to being a CEO, Daniel led product and sales organizations at public and private companies.
Daniel Graff-Radford started his entrepreneurial career while attending Emory University, where he and a partner ran an online travel booking company called African Adventures.
Prior to pRxEngage, Ethan was the Director of IT and Head of Product at Network Progression, a patient tracking platform for law firms, which saw explosive growth from 15 to over 100 people.
Ethan implemented SDLC / Agile development methodologies across a full-stack dev team, he also oversaw the process of certifying HIPAA compliance.
Prior to Network Progression, Ethan was on the production team at Mountaintop Studios, an Andreessen Horowitz backed game development studio. Besides the product management work, Ethan took their first game through the ESRB ratings process.
Before working in technology companies, he was a System Administrator at Capstone Academy seeing them move to a virtual environment during Covid.
As CTO of pRxEngage, Charlie Myrick spearheads the technology strategy and product development for our innovative clinical trial matching platform.
Charlie brings a wealth of experience in building and scaling technology solutions, previously serving as the Founding CTO of In The Network. There, he architected a legal-medical case management platform, scaling the company from a three-person startup to over 500 employees and leading a global engineering team to develop NetProApp, a custom CRM utilized daily across the organization.
His career is marked by a consistent focus on building scalable systems and solving complex operational challenges.
Jeffrey Cehelsky is a seasoned biotech executive with deep operational and strategic experience across drug development, and corporate development.
His career spans leadership roles at some of the most innovative companies in the life sciences sector, including Millennium Pharmaceuticals, Alnylam Pharmaceuticals, and Intellia Therapeutics.
At Millennium (Takeda), Jeff was involved during a pivotal time in the company’s transformation contributing to cross-functional initiatives that spanned R&D and strategic alliances. At Alnylam, he held key roles in building the company’s early development and clinical alliance capabilities, helping shape the RNAi field’s transition from promise to platform. Later, at Intellia Therapeutics, he worked at the intersection of gene editing science and corporate strategy, helping the company navigate its evolution from a preclinical pioneer to a clinical-stage leader in CRISPR-based therapies. Jeff combines a strong scientific acumen with commercial pragmatism and is known for his ability to guide companies through critical inflection points.
What Jeff brings to pRxEngage?
At pRxEngage, Jeff brings a strategic lens shaped by two decades of navigating complex therapeutic landscapes, from early science to late-stage development and commercial readiness. His experience launching first-in-class technologies and working across alliances gives the team a seasoned partner who understands how to align biotech innovation with sponsor, site, and patient realities. He plays a key role in helping pRxEngage define its value to biopharma partners, sharpen its go-to-market strategy, and ensure that the platform is built with a clear view of the regulatory and operational landscape.
Sabrina Johnson is a rare-disease mom to a daughter with Angelman Syndrome and a powerful advocate for families in the rare community. She combines more than 15 years of experience across teaching and HR to build inclusive cultures, grow initiatives from the ground up, and create people-centred systems that work in the real world.
At pRxEngage, Sabrina plays a key role in shaping our mission, ensuring our work reflects the needs of patients, caregivers and communities. She keeps our team focused on empathy, balance and the human experience behind the technology.
Alyssa supports outreach, sponsor engagement, and project operations at pRxEngage. She brings experience across clinical research, biotech site operations, and community engagement, underpinned by a degree in Neurobiology from Boston University.
She began her career at a clinical research site in Boston, managing recruitment, scheduling, and patient visits, before moving into biotech real estate, where she led member engagement and business operations. This gave her early insights into life science innovation before programs reached the clinic.
At pRxEngage, Alyssa focuses on coordinating onboarding, communication, and outreach efforts that strengthen sponsor partnerships and support better patient experiences.
Caleigh leads efforts on how we engage with community and patient groups, showing what it means to design engagement with empathy, clarity, and real-world understanding. Her leadership helps ensure that our work doesn’t just inform, it respects the people it’s meant to serve.
Caleigh brings lived experience, strategic insight, and heart to her role at pRxEngage. She lives with cystic fibrosis, and her personal journey through care and clinical research gives her a deep understanding of what it feels like to navigate treatments, and health systems.
Caleigh is deeply involved with patient advocacy and community engagement, building initiatives that uplift voices and make healthcare information more accessible.
Lathe leads front-end development initiatives, specializing in the creation of high-performance, user-centric interfaces. With a focus on modern web architecture, they bridge the gap between complex technical logic and intuitive digital experiences to deliver scalable software solutions.
Lathe brings a diverse technical pedigree to the team, beginning their career in the environment of government finance. There, he managed critical financial software using COBOL and the AS/400, ensuring the stability and integrity of county-level systems. This foundation in legacy architecture provided a great foundation for precision and data management that informs our work today.
Following this, Lathe served as a Full-Stack Developer at Circadence Corporation, where they engineered sophisticated cybersecurity software and solutions. During their tenure, they were responsible for building robust end-to-end features, bridging the gap between secure back-end infrastructure and intuitive front-end delivery. This experience in the cybersecurity domain sharpened his ability to solve complex operational challenges while maintaining a rigorous focus on platform security and scalable web architecture.
Angelika Grechnaya is a qualified Counselling Psychologist who completed her Doctorate in Counselling Psychology in 2024. She specialises in integrative psychological approaches, drawing on CBT, psychodynamic therapy, and existential analysis to support individuals through emotional challenges, life transitions, and inner conflict.
At pRxEngage, Angelika leads Psychology & Behavioural Insights, helping ensure the platform supports clear decision-making, trust, and sustained engagement. Her role focuses on applying behavioural science to reduce cognitive overload, strengthen confidence, and design patient experiences that feel human, supportive, and empowering.
Learn more or get involved
Whether you’re someone living with a condition exploring your options, a community organisation looking to share clear information, or a research team aiming to build trust with people, we’d be glad to hear from you.
