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Experts don't know what causes testicular cancer. But some problems, such as having an undescended testicle or Klinefelter syndrome, may increase a man's risk for this cancer. Most men who get testicular cancer don't have any risk factors.
Clinical trials are research studies that evaluate a new medical approach, device, drug, or other treatment. As a Stanford Health Care patient, you may have access to the latest, advanced clinical trials.
Open trials refer to studies currently accepting participants. Closed trials are not currently enrolling, but may open in the future.