Clinical Trial Feasibility: 2026 Guide & Checklist

Clinical trial feasibility is the process of figuring out if a proposed study can actually be done successfully. Think of it as a comprehensive reality check before investing millions of dollars and years of effort. By assessing critical factors like patient availability, site capabilities, and regulatory hurdles upfront, sponsors can dodge costly roadblocks and set their studies up for success. This guide breaks down everything you need to know about conducting a thorough clinical trial feasibility assessment.

What is Clinical Trial Feasibility and Why Is It So Important?

At its core, clinical trial feasibility is an investigation to determine if a clinical study is practical, achievable, and likely to succeed. It’s about asking the tough questions early on to avoid trial delays or outright failure down the line.

A well run feasibility analysis protects sponsors from investing in a trial that is doomed from the start and protects patients from participating in poorly planned research. The stakes are incredibly high. A staggering 76% of Phase II to III clinical trials fail to meet their enrollment timelines, often pushing completion dates back by 90 days or more. These delays have massive financial consequences and slow down the delivery of new treatments to patients who need them.

Proper clinical trial feasibility analysis mitigates these risks by identifying challenges in advance, allowing teams to adjust the protocol, budget, or strategy before the study ever launches.

The Three Levels of Feasibility Assessment

Feasibility isn’t a single action but a multilayered process. It’s best understood by looking at it from three different altitudes, from the ten thousand foot view down to the boots on the ground.

1. Program Level Feasibility

This is the big picture. Before even designing a specific study, a program level assessment looks at the entire clinical development plan for a drug or therapeutic area. It asks foundational questions like:

Is the disease prevalent enough in our target regions to support a series of trials?
What does the current treatment landscape look like?
Are there major scientific or logistical barriers (e.g., lack of biomarkers) that could impact all our planned studies?

This strategic overview ensures the entire research program is built on a solid, achievable foundation.

2. Study Level Feasibility

Zooming in, study level feasibility focuses on a single, specific protocol. Here, the team validates the individual trial’s design against real world conditions. Key questions include:

Can we realistically recruit the required number of patients who meet our specific criteria?
Are the planned procedures and assessments practical for sites and patients?
Do the protocol requirements align with the standard of care in the countries we’ve chosen?

This is where potential design flaws are caught. For instance, feedback might reveal that weekly clinic visits are too burdensome for a particular patient population, prompting a change to a more manageable schedule.

3. Site and Investigator Feasibility

This is the most granular level, focusing on individual research sites and the teams that run them. It’s a deep dive to confirm that a specific hospital or clinic has what it takes to deliver. This involves evaluating the site’s infrastructure, the investigator’s track record, and the local patient population. A trial is only as strong as its participating sites, making this a critical step in the selection process. For a step-by-step checklist, see site feasibility best practices.

The Core Components of a Feasibility Analysis

A comprehensive clinical trial feasibility study examines the trial from every possible angle. Let’s break down the essential components you need to evaluate.

The Patient Perspective

Without patients, there is no trial. Understanding their journey, availability, and willingness to participate is paramount.

Patient Population Assessment: This starts with epidemiology. How many people have this disease? Where do they live? Where do they receive care? This analysis estimates the total potential patient pool. Unfortunately, overestimating this pool is a common reason for failure; one review found that 25% of oncology trials failed to hit their enrollment targets.
Eligibility Estimation: Every trial has inclusion and exclusion criteria that shrink the available patient pool. Overly strict criteria are a notorious problem. In fact, 16% of all protocol amendments are made simply to loosen these rules after a trial is already struggling to find participants. A good feasibility analysis stress tests each criterion to ensure it is medically necessary and not just “nice to have”.
Recruitment and Retention Planning: It’s not enough to know patients exist; you need a plan to reach them and keep them in the study. While over 80% of patients express a willingness to join a trial, only about 10% actually do. Clinical trial patient recruitment programs can help bridge this gap. A solid strategy outlines how patients will be identified (e.g., through EHR database searches, physician referrals, or advocacy groups) and what patient engagement measures will be taken to support them throughout the trial to prevent dropouts.
Study Design Acceptability: A protocol might look perfect on paper but be completely impractical for patients. Feasibility asks: is the visit schedule too demanding? Are the procedures too invasive? Is the trial aligned with the current standard of care? A design that deviates too far from routine medical practice will struggle to gain acceptance from both patients and their doctors.

The Site and Investigator Perspective

Choosing the right partners is crucial for success. Not all sites are created equal, and a thorough vetting process is non negotiable.

Investigator Qualification and Past Performance: An investigator’s experience and track record are strong predictors of future success. Shockingly, at least one third of investigators fail to enroll a single patient in a given study. Feasibility looks at their credentials, therapeutic expertise, and, most importantly, their past enrollment data and data quality.
Site Demographics and Prior Trial Experience: Does the site serve a patient population that matches the trial’s needs, including any diversity goals? And have they successfully conducted similar trials before? An experienced site that treats the right demographic can hit the ground running.
Site Resources and Infrastructure: This is a practical audit of the site’s capabilities. Do they have enough trained staff, like study coordinators? Do they have the necessary equipment, such as a calibrated ECG machine, a centrifuge, or a freezer for storing samples? Is there adequate space for monitoring visits and secure drug storage?
Ancillary Service Availability: Complex trials often require specialized support, like advanced imaging centers (MRI, CT scans), specialized labs, or biobanks. Feasibility confirms whether a site has these core facilities in house or has reliable access to external partners.
Quality and Inspection History: A site that enrolls quickly but produces low quality data is a liability. The assessment should review a site’s history with audits and regulatory inspections (e.g., from the FDA). A clean compliance record is a strong positive signal.

The Operational and Logistical Plan

The best science can be derailed by poor planning. The operational side of feasibility ensures the trial can run smoothly and on schedule.

Startup and Approval Timelines: Getting a trial off the ground involves a complex sequence of events: site selection, contract negotiation, regulatory submissions, and ethics approvals. Timelines can vary wildly by country. For instance, some countries in Latin America are known for faster regulatory approvals. A detailed startup plan maps out these steps to set a realistic date for enrolling the first patient.
Regulatory and Ethics Requirements: Every country has its own regulatory body and ethics review process. Feasibility planning involves understanding these specific requirements and timelines to avoid unexpected delays (see this global clinical trial authorization guide for an overview). Navigating this maze is critical for a smooth launch.
Budget and Contracting Timelines: Believe it or not, negotiating budgets and contracts is one of the biggest sources of delay in starting a trial. One study found this process can take a median of 91 days. A solid feasibility plan includes a realistic timeline for these negotiations and uses tools like master agreements to speed things up.
Cost Estimation and Budgeting: This involves forecasting all trial related expenses, from per patient costs and site payments to data management and drug shipping. The goal is to ensure the trial is financially viable and to avoid budget shortfalls later on.
Geographic and Regional Considerations: Deciding where to run a trial is a strategic choice. Analysis should consider disease prevalence, standard of care, regulatory environments, and even cultural attitudes toward research in different regions to select the optimal countries and locations for sites.

Strategy, Process, and Technology

Modern feasibility leverages data, teamwork, and technology to make smarter decisions.

The Role of the Cross Functional Team: Feasibility is a team sport. Input from clinical operations, medical affairs, biostatistics, regulatory experts, and patient recruiters is essential. Each function brings a unique perspective, helping to identify potential obstacles from all angles.
Feasibility Questionnaires and Checklists: These are structured tools used to gather consistent information from potential sites. Questionnaires ask about patient numbers, available equipment, and staff experience, providing data to compare sites and make informed decisions.
Competing Study Analysis: It’s crucial to know what other trials are competing for the same patients. If a major cancer center is already running 15 other trials for advanced lung cancer, recruiting for a new one will be a challenge. This analysis helps gauge enrollment risk and refine the recruitment strategy.
Risk Identification and Mitigation: A key part of feasibility is anticipating what could go wrong. What if enrollment is slower than expected? What if a key vendor fails? For each potential risk, a mitigation plan is developed. For example, knowing that only 31% of trials meet their original enrollment goals, a team might build extra time into the schedule from the start.
Technical Capability and Data Systems: Modern trials depend on technology like Electronic Data Capture (EDC) systems and Electronic Health Records (EHR). Feasibility confirms that sites have the necessary infrastructure and training to use these tools.
Remote Site Evaluation and Technology Use: The ability to evaluate and monitor sites remotely has become a game changer. Using video conferencing and secure portals saves time and money. Platforms specializing in decentralized clinical trials technology are making this even more seamless. For example, the Curebase platform provides an end to end digital environment that can simplify many aspects of a trial, from remote consent to telehealth visits. This technology makes it feasible to include patients and doctors from almost anywhere.

Optimizing Your Clinical Trial Feasibility Process

Executing a successful clinical trial feasibility analysis is a complex but essential discipline. It transforms trial planning from a process of guesswork into a strategic, data driven exercise. By systematically addressing each of these areas, you can significantly improve your study’s design, accelerate its startup, and increase its overall chance of success.

For teams looking to enhance their trial execution, leveraging a comprehensive platform can make all the difference. Curebase offers a decentralized clinical trial platform and expert services designed to tackle many of the challenges identified during feasibility, from broadening patient access to streamlining data management.

Frequently Asked Questions

What is the main goal of a clinical trial feasibility study?

The primary goal is to determine, with a high degree of confidence, whether a proposed clinical trial can be successfully executed. This includes assessing if it can meet its enrollment targets on time, stay within budget, and generate high quality data while adhering to all regulatory and ethical standards.

What are the most common reasons a clinical trial is not feasible?

Common reasons include an insufficient patient population, overly restrictive eligibility criteria that make recruitment nearly impossible, a study design that is too burdensome for patients or clinicians, and an unrealistic budget or timeline.

How long does a clinical trial feasibility assessment take?

The duration can vary widely based on the complexity of the trial, the number of countries involved, and the depth of the analysis. A rapid assessment might take a few weeks, while a comprehensive global clinical trial feasibility study for a large Phase 3 trial could take several months.

Who is responsible for conducting clinical trial feasibility?

It is a collaborative effort. Typically, the sponsor (a pharmaceutical or biotech company) or a Clinical Research Organization (CRO) leads the process. It involves a cross functional team including experts from clinical operations, medical affairs, regulatory affairs, and data management.

How has technology changed the approach to clinical trial feasibility?

Technology has revolutionized feasibility by enabling data driven decisions. EHR and claims databases help create more accurate patient population estimates. Digital platforms allow for remote site evaluations, which saves time and money. Integrated systems like the one offered by Curebase can streamline trial management from start to finish, making complex, decentralized trial designs more feasible than ever before.

Turn Your Complex Trial into a Feasible Reality

A well planned trial is a successful trial. By investing in a thorough clinical trial feasibility process, you lay the groundwork for smoother, faster, and more effective clinical research.

Ready to optimize your next clinical trial? Visit the Curebase website to learn more about how their innovative approach can support your study from feasibility through final data lock.