A Study of Pembrolizumab (MK-3475) in Pediatric Participants With an Advanced Solid Tumor or Lymphoma (MK-3475-051/KEYNOTE-051)
Researchers are looking for new ways to treat children with different types of melanoma (skin cancer), solid tumors, and lymphomas (blood cancers) that are any of these:
* Advanced, which means cancer spread in the body or cannot be removed with surgery
* Relapsed, which means cancer has come back after it had responded to previous treatment (responded means it stopped growing, gets smaller, or disappeared)
* Refractory, which means cancer did not respond to previous treatment
Pembrolizumab is an immunotherapy, which is a treatment that helps the immune system fight cancer. Researchers want