The Efficacy of Ipilimumab for the Treatment of Melanoma
Antoni Ribas, MD, PhD, the director of the Tumor Immunology Program Area at UCLA's Jonsson Comprehensive Cancer Center, discusses the efficacy of ipilimumab for the treatment of melanoma.
Antoni Ribas, MD, PhD, the director of the Tumor Immunology Program Area at UCLA's Jonsson Comprehensive Cancer Center, discusses the efficacy of ipilimumab for the treatment of melanoma.
Ipilimumab blocks CTLA-4, which is a negative regulator of the immune system, and is important in the activation step of the immune system, Ribas explains.
When the immune system is being activated, CTLA-4 has its brake effect. If the brake effect is released, Ribas says, immune system cells may be able to target the cancer, but some immune cells may target other tissues, creating some risk.
Clinical Pearls
PD-1 is at the defector stage of the immune system, Ribas says, and releasing PD-1 is more likely to achieve a rapid response and be more targeted to the T cells that are cancer-specific.
- Ipilimumab blocks CTLA-4, a negative regulator of the immune system
- If the CTLA-4 brake effect is released, immune system cells may be able to target the cancer
- Releasing PD-1 is more likely to achieve a rapid response and be more targeted to the T cells that are cancer-specific
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