Coya Therapeutics' vision is to make diseases like ALS "livable" by completely stopping their progression. This ambitious goal stems from a small investigator-initiated trial where patients showed no disease progression over six months, a period where a significant decline is typically expected, reframing the therapeutic benchmark.
While T-regs are most commonly associated with autoimmune conditions, Coya focuses on neurodegeneration. This strategy is based on their founder's research showing T-reg dysfunction is a major driver of diseases like ALS and FTD, applying a known biological mechanism to a novel, high-unmet-need therapeutic area.
The therapy combines low-dose IL-2 to expand T-reg numbers and function, with a CTLA-4 inhibitor to reduce surrounding inflammation. This dual approach addresses a key failure mode of prior T-reg therapies, where newly functional cells would quickly become dysfunctional again in the inflammatory disease environment.
After Novo Nordisk's GLP-1 trial in Alzheimer's failed to show clinical benefit despite a 10% biomarker improvement, Coya is pursuing a combination therapy. They theorize that adding low-dose IL-2 can synergistically boost biomarkers to the 25-30% range, a level they believe is necessary to achieve clinically meaningful effects.