Research led by scientists at UCLA Jonsson Comprehensive Cancer Center found that responses to PD-1 checkpoint blockade immunotherapy in patients with advanced melanoma depended on whether or not they had previously received another immunotherapy—CTLA-4 blockade—as well as other factors.
Immunotherapy has changed the course of blood cancers and melanomas, but is stubbornly ineffective for the treatment of most epithelial solid cancers—the cancers that kill about 90% of the more than 600,000 Americans who die of cancer each year.
