The short answer
After a trial ends, researchers analyze the results, participants move to ongoing follow-up, and sometimes people can keep receiving a treatment that helped through continued access.
When a trial ends, researchers analyze and eventually publish the results.
Participants usually continue with follow-up care.
If a treatment helped you, ask whether you can keep receiving it.
In some trials you may be able to continue treatment outside the trial.
Choose how you want to read this
The whole article, with every detail and caution.
The simple version
Your part in a clinical trial can end in a few ways. The trial may finish or be stopped. You may complete all your visits. You may decide to leave. Or the study team may decide that leaving is in your best interest. Knowing this ahead of time can make the experience feel less uncertain.
What happens to you as a participant
NCI says you can work with your study team or your regular care team to decide the best next steps for your care. The study team may also follow up with you later to see how you are doing. In some trials you may have the option to continue treatment outside of the trial. If a treatment seems to be helping you, ask whether that is possible for you.
What happens to the results
Researchers analyze the data collected from everyone in the trial. Under NIH policy, results of NIH-funded trials must be submitted to ClinicalTrials.gov within 1 year of the trial's primary completion date.
How you can find out the results
NCI says you can ask for access to the results of your trial, if they are available. Ask your research coordinator how and when the overall results will be shared. You can also look for your trial by name or ID number on ClinicalTrials.gov to see whether results have been posted.
If you leave a trial
NCI lists "you decide to leave" as one way participation ends. If you are thinking about leaving, tell your study team. Ask what follow-up, if any, the trial still recommends, and what care you should have next.
Keep your own copy of the paperwork
Ask your care team whether information about the treatment you received in the trial will be added to your regular medical record. Keeping a personal copy of your trial paperwork can help if a future provider asks about it.
What to ask before and after a trial
Before joining, ask:
- What happens to my care once the trial ends, in every possible outcome?
- Would continued access to the treatment be offered if it is helping me?
After the trial, ask when and how you will learn the overall results, not just your own individual outcome.
Sources
- NCI: What to Expect During a Clinical Trial
- ClinicalTrials.gov: Reporting requirements
- NIH Grants Policy Statement: clinical trials registration and reporting (could not be opened; the ClinicalTrials.gov page was used to confirm the 1-year rule)
Common questions
What happens to my care when the trial ends?
You typically move into follow-up care, either with the trial team or your regular oncologist. They will explain the plan for monitoring and any next treatment steps.
Can I keep taking a treatment that worked?
Sometimes. If a treatment helped you, ask the team whether continued access is available. NCI says some participants may have the option to continue treatment outside of the trial.
When will I learn the results?
Analyzing and reviewing trial data takes time, so final results may not be available right away. Ask the team how and when you can learn the outcomes.
What if the treatment did not work?
Work with your study team or regular care team to discuss the best next steps for your care.
Questions to ask your doctor
Being prepared helps you get the most out of your appointments. Save or print these questions.
Tap a question to save it to your list (kept on this device).
Talk with a trained specialist or navigator
Cancer Explained provides educational guidance, but does not replace trained specialists, social workers, or your medical team.
Talk to a trained cancer information specialist
Free, confidential assistance from NCI Cancer Information Service via phone, chat, or email.
Contact your oncology team
Locate after-hours contact numbers, portal messages, or urgent triage phone lines.
Find a patient navigator
Get one-on-one help with appointments, logistics, translation, and care coordination.
Find a genetic counselor
Discuss inherited mutation risk, family history, and genetic testing options.
Find an oncology social worker
Access emotional counseling, family support groups, and mental health resources.
Find a financial navigator
Locate copay assistance foundations, grant programs, and lodging/travel support.
Find a clinical-trial specialist
Search matching studies and speak with NCI trial information specialists.
Get urgent help
Fever of 100.4°F (38°C) or higher during chemo, severe pain, or trouble breathing: call your cancer care team right away, day or night. Call 911 for an emergency.
Know someone who needs this?
Plenty of people are looking for something like this and do not know where to start. If this would help a friend or someone you love, send it on — we have written an opening line so you do not have to stare at an empty message. You can change every word of it.
Your message is written and sent in your own email or messaging app — we never see who you send it to, and nothing is added to any list.
Plain-language explanation of the published sources cited on this page. AI-assisted, source-checked, not clinician-reviewed.
Written by: Cancer ExplainedSources last checked: 2026-07-14 what this meansLast updated: 2026-08-10Next planned review: 2027-01-14
Review details and limits
Cancer Explained does not originate medical claims. Every page restates guidance already published by the National Cancer Institute, the CDC, the USPSTF and the FDA, in plain language, with the source cited so you can check the original yourself. AI does the translating and organizing; automated checks test claims, citations, clarity and safety before anything publishes, and this is translation and navigation, not clinical judgment. Nothing here is personal medical advice, and no page can account for your particular situation.
Editorial status — Source checked. This page was written with AI assistance and then compared with the sources listed on it, looking for statements those sources do not back up. That check is not a sentence-by-sentence record and can miss errors. It is not a medical review, and it does not confirm the page is complete or right for your situation.
General education — varies by person. Answers genuinely differ between people. This page explains what commonly varies and points you to your care team for your situation.
Human medical review: not completed. Pages here are not signed off by a clinician before they publish. That is not an oversight we are quietly working around: we restate published guidance and cite it, so the authority belongs to the source rather than to us, and every page names where its claims come from — you can verify us instead of trusting us. Where a volunteer clinician has reviewed a page, their name and credentials appear on it; where no name appears, no clinician has checked it. We are glad to have reviewers and are recruiting them, and we do not hold pages back waiting for one. Use this site to understand your situation and to ask better questions of the people treating you.
Words to know
Tap any term to see what it means.
Knowledge check
0 of 5 answered
This self-assessment checks understanding of educational content only. It is not medical advice.
How this page was created
Cancer Explained does not originate medical claims. Every page restates guidance already published by the National Cancer Institute, the CDC, the USPSTF and the FDA, in plain language, with the source cited so you can check the original yourself. AI does the translating and organizing; automated checks test claims, citations, clarity and safety before anything publishes, and this is translation and navigation, not clinical judgment. Nothing here is personal medical advice, and no page can account for your particular situation.
Editorial status: Source checked — This page was written with AI assistance and then compared with the sources listed on it, looking for statements those sources do not back up. That check is not a sentence-by-sentence record and can miss errors. It is not a medical review, and it does not confirm the page is complete or right for your situation.
Human medical review: not completed. Pages here are not signed off by a clinician before they publish. That is not an oversight we are quietly working around: we restate published guidance and cite it, so the authority belongs to the source rather than to us, and every page names where its claims come from — you can verify us instead of trusting us. Where a volunteer clinician has reviewed a page, their name and credentials appear on it; where no name appears, no clinician has checked it. We are glad to have reviewers and are recruiting them, and we do not hold pages back waiting for one. Use this site to understand your situation and to ask better questions of the people treating you.
Read more about our editorial process, our use of AI, and our corrections policy.
Spotted a problem? Report an error — a factual mistake, broken or outdated source, confusing wording, or anything that seems unsafe. Please do not include names, medical record numbers, dates of birth, addresses, or other identifying medical information in your report.
After using this page, do you understand what to do next?
Anonymous — we only record the answer, never who gave it.