I don’t know where to start
Learn how clinical trials work and what a sensible first step can look like.
Start HereFor patients & families
Search current clinical trials privately, or turn to C2R for straightforward help understanding study information and what you can do next.
You can explore studies without sharing your contact information.
Start with what you need
You do not need to know clinical-research terminology. Choose the closest starting point and C2R will help make the next step easier to understand.
Learn how clinical trials work and what a sensible first step can look like.
Start HereGet help understanding what the study is about and what you may want to ask next.
Understand a StudySearch current clinical trials by condition and location without creating a C2R patient record.
Find Clinical TrialsStart with answers to common patient questions in ordinary language.
See Common Questions
Search without giving C2R your name, phone number, or email.
C2R shows where public clinical-trial information comes from.
Looking at a study does not mean you have to participate.
C2R can explain the process. The research site decides who can participate.
Clinical Trial Finder
Choose a condition and location to explore current public studies that may interest you.
C2R uses public clinical-trial information, including ClinicalTrials.gov, to help people explore research opportunities. Study information can change, so the research team will confirm current details if you decide to explore a study further.
Search results do not determine whether you qualify. The research team makes that decision.
More than a study listing
Clinical-trial listings can contain unfamiliar terms and a lot of detail. C2R helps you focus on what the study is about, what participation may involve, and what questions are worth asking before you decide whether to learn more.
C2R does not decide whether you qualify or make medical decisions. The research site handles eligibility and study participation decisions.

Start with the study purpose and the health question the researchers are trying to answer. C2R can help translate common study terms into everyday language.
Look at the study locations and ask which visits must happen in person. Location matters because travel can become a meaningful part of participation.
Study length and visit schedules vary. Ask how long the study lasts, how often visits happen, and how much time each visit may take.
Study descriptions may list visits, tests, procedures, questionnaires, or study treatments. The research team can explain exactly what applies to that study.
Ask whether study-related visits or procedures have costs for you, whether travel is reimbursed, and whether participant payment is offered. The answer depends on the study.
Ask the research team what is known, what is uncertain, and what other options you may have. A study should not be treated as a promise of medical benefit.
Often your regular healthcare continues alongside research participation, but each study is different. Ask the research team how study care and your usual care would work together.
The research site does. C2R can help you understand study information and the process, but it does not decide whether you qualify.

A study can affect your time, travel, routine, and healthcare. You deserve clear answers before making a decision.
How C2R helps
C2R’s public finder and patient resources are available now. When C2R can help directly with a specific study, that option will appear clearly; otherwise, you can still search and prepare questions without creating a C2R patient record.
Use C2R to explore current clinical trials by condition and location.
Make study descriptions and common research terms easier to follow.
Think through questions about visits, time, travel, costs, risks, and what happens next.
When a C2R study-specific assistance option is available, understand how to move toward the research team.


Explore by condition
Start with patient-focused pages where C2R has organized current study information and practical questions around a specific condition.
Common patient questions
Start here when you are not sure what to ask. These answers are general information, not medical advice.
Start with a condition or health topic and your location. C2R can search current public study listings and show research locations within the travel distance you choose.
Yes. C2R can help you explore current study information and understand how to search. If direct C2R help with a specific study is available, you will see that option clearly.
Yes. You can search current public study listings without giving C2R your name, phone number, or email.
The research site does. C2R can help explain study information and the research process, but the research team reviews the study requirements and decides who can participate.
Read the study information, write down your questions, and decide whether you want to learn more. The research team can explain the study in detail and, if you move forward, will handle the study-specific screening process.
Yes. C2R is designed to make public study information and common clinical-research terms easier to understand. You can also use the questions on this page to prepare for a conversation with a research team.
It depends on the study. Ask the research team which study-related costs are covered, whether travel or other expenses may be reimbursed, and whether participant payment is offered.
Clinical-trial participation is voluntary. The research team can explain how stopping participation works for the specific study and what follow-up may be important.
Whether you have already found a study or are not sure where to start, C2R can help you understand study information and what you may want to explore next.
Exploring a research opportunity does not obligate you to participate.