The most comprehensive listing of clinical trials can be found at www.clinicaltrials.gov. The site is sponsored by the National Library of Medicine and offers readers the chance to search for clinical trials either by condition or by the trial’s sponsor. Listings also indicate whether a trial is closed or still recruiting patients.

Be sure you understand the pros and cons of entering a clinical trial. Be a discriminating shopper when it comes to information and watch for bias. For information about the importance of clinical trials and how they work, see: Treating Cancer at Yale-New Haven Hospital—Clinical Trials.