On World Asthma Day 2026, we’re raising awareness of asthma- a condition affecting over 400 million people worldwide - and reflecting on the urgent need to rethink how we identify and manage its most serious forms.   Severe asthma continues to place a significant burden on patients and healthcare systems globally. At Optimum Patient Care (OPC), we’re proud to lead the International Severe Asthma Registry (ISAR), a collaborative global platform advancing real-world research