Clinical trials: A chance to try new therapies
Clinical trials: A chance to try new therapies
Clinical trials are research studies to test ways to detect, prevent or treat disease. You might have a family member involved in a clinical trial, or you might be considering whether a clinical trial is an option for you. Choosing to participate in a clinical trial can be a complex decision. You first need to understand what clinical trials are and how they're used to test new treatments.
Why are clinical trials important?
Clinical trials look at new ways to prevent, detect or treat disease. Treatments might be new drugs or new combinations of drugs, new surgical procedures or devices, or new ways to use existing treatments. The goal of clinical trials is to determine if a new test or treatment works and is safe. In fact, new medications can't be sold in the U.S. until they've been through clinical trials. Clinical trials can also look at other aspects of care, such as improving the quality of life for people with chronic illnesses.
Who can participate in clinical trials?
It depends on the trial, but researchers are typically looking for people who have a specific disease or who are at high risk to develop a certain disease. Some trials are limited to people who haven't started treatment, while others focus on people in whom standard treatment has failed. Healthy people are needed for some trials. Researchers also consider age, sex and race, among other variables, when selecting people for clinical trials.
Why do people volunteer for clinical trials?
If treatment for your disease isn't available or if the standard treatment hasn't worked for you, you might consider a clinical trial. Clinical trials can provide access to new or experimental treatments that otherwise aren't available.
However, there's no guarantee that the treatment will work for you or even that you'll receive it. Some participants in clinical trials get a placebo — a pill or liquid that looks like the new treatment, but has no active ingredients. Using placebos give researchers something to compare with the drug being tested. You can't control whether you receive the placebo or the new treatment. Not all clinical trials have a placebo component, as some clinical trials compare two different active treatments. Ask your doctor if there is a possibility you will get a placebo.
Despite these caveats, clinical trials offer hope for many people and an opportunity to help researchers find better treatments for people in the future.
How do you enroll in a clinical trial?
Your doctor might recommend a clinical trial to you, or you might find out about a trial on your own. A good place to start is the National Library of Medicine clinical trials website. You can also find information about clinical trials by visiting the websites of medical groups, such as Mayo Clinic.
Once you find out about a trial you're interested in:
Questions to ask before participating in a clinical trial
Before you agree to participate in a clinical trial, make sure you know the answers to these questions:
How do clinical trials protect participants' safety?
The same ethical and legal rules that govern medical practice apply to clinical trials. In addition, most clinical research is federally regulated with safeguards to protect the participants. Clinical trials must follow a scientific action plan called a protocol. The protocol explains what will be done in the study and why. It outlines:
The organization that sponsors the study, such as the medical center where the work will be done, must approve the protocol. In addition, an institutional review board must review the protocol to be sure that participants are treated humanely and ethically, and to evaluate whether the likely benefit of the treatment is worth its risk. The review board also checks to see if any of the researchers have substantial conflicts of interest.
A clinical trial may also have a data safety monitoring board overseeing it. As the name suggests, this board monitors the safety of the study participants. The data safety monitoring board can stop a study at any time if it seems that the treatment isn't working or it's causing too many side effects. A trial can also be halted by the board if the treatment is proving to be better than the standard treatment and therefore should be made available to people outside of the clinical trial.
What is informed consent?
Informed consent is the process of learning the key facts about a clinical trial before deciding whether or not to participate. During this process, you learn about the purpose of the trial, as well as key details such as:
You must sign an informed consent form to take part in a clinical trial, but it isn't a contract. If you later decide to leave the study, you can do so at any time.
If your child will be enrolled in a clinical trial, you will go through the informed consent process together. As the parent or guardian, you will have to give permission for your child to participate. Depending on your child's age, researchers may also ask your child directly if he or she agrees to be in the study.
How to decide if a clinical trial is for you
By participating in a clinical trial, you can gain access to new research treatments and help others by contributing to medical research. However, clinical trials aren't without risks. For one thing, the experimental treatment may not work for you. Or you may experience unpleasant, serious or even life-threatening side effects. If you're considering a clinical trial, it's essential to get all the facts and to talk with your doctor about the potential risks and benefits.
Last Updated: 2011-07-02
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