Clinical trials rely on trust. And trust, more often than not, depends on communication. But for many trial participants, that communication is patchy, vague, or simply absent. So what does effective communication really look like during a clinical trial?
When someone commits to a clinical trial, they’re investing their time, their body, and their hopes. Being left in the dark about overall trial progress can lead to anxiety and a feeling of being disconnected. Regular updates show respect for their contribution.
The question isn’t whether to update participants. It’s how often, how much detail, and in what format. Clinical trial updates can make the difference between a participant who feels forgotten and one who feels valued. When done right, updates build a sense of teamwork and purpose — critical for long-term trial success.
Patient Communication Must Be Built Into the Plan
Communication should never be an afterthought. It needs to be a core part of your trial plan — just like recruitment, protocol design, or data collection. Set expectations from the start. The best approach is to be upfront. At the beginning of the trial, let participants know how and when they can expect to receive general updates about the study’s progress (without unblinding anyone, of course). Managing expectations prevents frustration later.
Think about what communication channels work best for your participant group. This might be a secure email, a dedicated section on a trial website, or even printed newsletters for those less comfortable with digital means. Offering a choice can be helpful.
Good updates aren’t flashy. They’re consistent. Even if there isn’t a major development, a brief check-in to say “things are progressing as planned” can be better than silence. It manages anxiety and confirms the study is still active. Silence, on the other hand, can be unsettling. It leaves participants wondering if they’re still part of something that matters.
It also helps to explain the “why” behind updates. Patients are more likely to stay engaged when they understand how their participation fits into the bigger picture. A brief message saying, “Your input this month helped us reach 75% of our target enrolment,” does more than thank them. It reminds them they’re making an impact.
“Enough” isn’t a one-size-fits-all answer. What constitutes “enough” can vary. However, a good rule of thumb is that participants shouldn’t have to chase you for information. Proactive, planned communication is key. Think milestones: “We’ve now enrolled X number of participants,” or “The study has reached its halfway point.” The key is to clarify how often communication will happen: weekly, monthly, at milestones — whatever fits your study. But once set, stick to it. Nothing erodes confidence like broken communication promises.
Finding the Right Level of Detail
Keep it simple and clear. No one wants to wade through dense, technical documents. Updates should be in plain language, easy to understand, and concise. A short newsletter, a brief section on a participant portal, or even a quick, clear verbal update at a routine visit can work.
The tone matters too. You don’t need to oversimplify — just speak plainly. Avoid jargon where you can. When complex terms are necessary, offer short explanations. Don’t assume your participants have a background in research. Assume they’re curious and deserve clarity.
What kind of information are we talking about? General updates could include things like overall recruitment numbers (if appropriate and not compromising the trial), significant milestones reached by the study as a whole, or perhaps a plain-language summary of what the research hopes to achieve (reiterated during the trial). It’s not about individual results or anything that could break the blind. Updates can also clarify what’s coming next. A simple “Here’s what to expect in the next phase” helps prepare participants and removes guesswork.
Consistency Builds Trust
A communication plan is only as good as its follow-through. If you promise updates every month, send them every month — even if they’re short. If a timeline changes, let participants know. Uncertainty and surprise erode trust quickly.
This is where patient communication really shows its value. The more transparent you are, the more likely patients are to remain committed. That’s especially true during long trials, where gaps in communication can make people feel forgotten or unimportant.
Consistency doesn’t mean frequency overload. Too many updates can be overwhelming; too few can make people feel forgotten. Consider a regular, predictable schedule – perhaps quarterly for longer trials, or tied to specific study phases. Ad hoc updates for major milestones are also good.
When you build communication habits, patients start to trust that they’ll be kept in the loop — even when the news is routine. That sense of inclusion can be just as important as the content itself.
Make Clinical Trial Updates Useful, not Just Polite
The “So what?” test for patients. Before sending an update, ask yourself: “Would a participant find this interesting or reassuring?” If it’s just internal news that doesn’t directly address their involvement or the study’s progression from their perspective, it might not be that useful.
It’s easy to think of updates as a courtesy. But done right, they’re a tool. They reduce dropout rates. They improve data quality. They make participants more likely to join future trials. So treat them like the strategic asset they are.
Updates can help troubleshoot too. If patients report challenges during the trial — like long wait times or confusing instructions — those insights can be addressed early. It keeps frustration from building and keeps engagement on track.
You can even use updates to check in on satisfaction. A short survey, an open feedback form, or a simple “How are things going?” shows you’re listening. And the information you get back could make the rest of the trial run smoother.
Use these updates as another chance to express appreciation for their continued participation. Acknowledging their commitment reinforces their value to the research. In many cases, patients become advocates because of how they were treated, not just what the trial achieved. That starts with regular, meaningful communication.
Keep the Door Open After the Trial Ends
Once a trial wraps up, the communication often stops. That’s a mistake. Participants want to know how things turned out — even if they weren’t part of the final phase or even if the results are still being analysed.
Following up after the trial shows respect and transparency. It’s also a chance to invite people into future studies or keep them engaged as advocates. Sharing outcomes builds trust not just with them, but with the broader community they’re part of.
Offer summaries that are clear and concise. Let them know what’s next. Will results be published? Is there a timeline for review? Will they hear from your team again?
Even a thank-you message, sent with care, reinforces that they were part of something bigger — and important.
Ultimately, providing appropriate progress updates is about treating participants as valued partners in the research. It fosters goodwill and can even positively influence their willingness to consider future trial participation.
Keith Berelowitz | Founder & CEO
Keith Berelowitz is the Founder of pRxEngage, a company redefining patient engagement and retention in clinical trials using living experience, proven methods, and AI.
