A closer look
Immunotherapy is a spectacular medical miracle right up until it turns into friendly fire. Checkpoint inhibitors essentially take the leash off your immune system, allowing T-cells to aggressively hunt down hidden cancer cells. However, without those regulatory brakes, hyperactive immune cells often go rogue, triggering severe autoimmune toxicities. Curing the cancer sometimes means dealing with an immune system that has suddenly decided your thyroid gland looks suspiciously like the enemy.
