General information I have received from National Institutes for Health and the National Cancer Institute concerning clinical trials:
Clinical trials are research studies that explore whether a medical strategy, treatment, or device is safe and effective for humans. These studies also may show which medical approaches work best for certain illnesses or groups of people. Clinical trials produce the best data available for health care decisionmaking.
The medical care is free of charge, and a per diem rate is paid for food and housing if one has to travel or relocate to participate in a study.
A person seeking to participate in a clinical trial would have to pay initial travel expenses for evaluation though, the per diem rates apply only if they are accepted into the trial.
US trials are not only open to US residents.
The best number to call for a nationwide check of clinical trials (this number would have info on the types and locations of all clinical trials available in the US) is 1-800-422--6237.
If calling with questions regarding a clinical trial, be sure you have the Clinical Trial Identifier available.
To do a search for clinical trials that are actively recruiting patients, check this link: Clinical Trials.gov Be sure to click the very useful "Help" link on that web site