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Questions to ask before joining a clinical trial

Viktoriia Golikova, MDFounder, ClinicalMatch3 min read

Before you join a clinical trial, you'll be asked to read and sign an informed consent document. That document is important — but it's most useful when you walk in with your own questions. Informed consent is meant to be a conversation, not a form to sign quickly. You're allowed to take it home, think it over, and ask someone you trust to read it with you.

Here are questions worth bringing, grouped by what they help you understand.

About the study itself

  • What is this study trying to find out, in plain words?
  • What phase is it, and what has already been learned about this treatment?
  • Will I be randomly assigned to a group? Could I receive a placebo or the current standard treatment instead of the new one?
  • Will I know which group I'm in?

About what happens to you

  • What will I be asked to do, and how often? How many visits, scans, or tests are involved, and how long does each take?
  • What are the known side effects, and how likely are they? What happens if I have one?
  • Who do I call, and at what hours, if something feels wrong?
  • Will my regular oncologist stay involved in my care while I'm in the study?

About your other options

  • What are my choices if I don't join — including the standard treatments for my situation?
  • If I join and the treatment isn't working, what happens next? Does being in this study limit my options later?

About leaving

  • Can I leave at any time, and will it affect the care I receive?
  • What happens to the information collected about me if I withdraw?

You have the right to leave a study at any point, for any reason. Asking about it up front isn't a sign you're less committed; it's part of making an informed choice.

About costs and logistics

  • Which costs does the study cover, and which might fall to me or my insurance? We break down the usual split in Who pays for what in a clinical trial.
  • Is there help with travel, lodging, or parking if the site is far from home?

About the bigger picture

  • Will I be told the results of the study when it ends?
  • What happens to my information, and who can see it?

Bring someone with you

If you can, bring a family member or friend to the conversation and ask them to take notes. Appointments about serious illness are hard to absorb, and a second set of ears helps. It's also completely reasonable to ask for time before deciding.

None of these questions are too basic. A good study team expects them — and the way they answer is itself useful information. To see which studies might be relevant to you, you can search recruiting trials, and then take what you find to your own care team.

This is general information, not medical advice. Talk to your own care team about your situation.

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Who pays for what in a clinical trial

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