Low‑Dose Interleukin‑2 Expands Regulatory T Cells and Modulates Biomarkers in Mild–Moderate Alzheimer’s Disease: Phase 2a Randomized Trial Shows Safety and Promising Signals

Low‑Dose Interleukin‑2 Expands Regulatory T Cells and Modulates Biomarkers in Mild–Moderate Alzheimer’s Disease: Phase 2a Randomized Trial Shows Safety and Promising Signals

A phase 2a randomized trial found low‑dose IL‑2 given every 4 weeks was safe, expanded regulatory T cells, altered peripheral inflammatory mediators, increased CSF Aβ42, stabilized NfL, and trended toward slower cognitive decline in mild–moderate AD.