Allschwil, Switzerland, September 14, 2026 Basilea Pharmaceutica Ltd, Allschwil (SIX: BSLN), a commercial-stage biopharmaceutical company committed to meeting the needs of patients with severe bacterial and fungal infections, announced today that its partner Asahi Kasei Therapeutics Corp. started a phase 2 clinical study in Japan with the antifungal Cresemba® (isavuconazole) for pediatric patients at risk of deep mycoses. Dr. Marc Engelhardt, Chief Medical Officer of Basilea, said: “We are ver