PDE5A-Positive Cancer-Associated Fibroblasts Drive Immune Exclusion in Gastric Cancer — Therapeutic Rationale for Combining PDE5 Inhibition with LAG3 Blockade

PDE5A-Positive Cancer-Associated Fibroblasts Drive Immune Exclusion in Gastric Cancer — Therapeutic Rationale for Combining PDE5 Inhibition with LAG3 Blockade

Single‑cell and spatial profiling identify a PDE5A+ CAF subset that remodels stroma, activates PI3K/AKT/mTOR–CXCL12 signaling, and recruits exhausted LAG3+ CD8 T cells, promoting immune exclusion in gastric cancer. Vardenafil plus LAG3 blockade restores antitumour immunity in preclinical models, supporting biomarker‑driven combination trials.
Everolimus and Low-Dose Tacrolimus Therapy After Pediatric Heart Transplant: Insights from a Multicenter Randomized Clinical Trial

Everolimus and Low-Dose Tacrolimus Therapy After Pediatric Heart Transplant: Insights from a Multicenter Randomized Clinical Trial

This randomized trial evaluates the safety and efficacy of everolimus combined with low-dose tacrolimus versus standard immunosuppression in children 6 months post-heart transplant, highlighting comparable rejection rates, improved kidney function, and reduced CMV infection risk.