A young woman of 19 years from the United Kingdom gets a new, promising medication against an extremely rare and life -threatening immune disorder: APDS. The medicine, leniolisib, would not only slow down the disease but even normalize. What exactly is APDS, and when does the breakthrough medication also come to Belgium? “This is a textbook example of Precision Medicine,” said child immunologist Isabelle Meyts (UZ Leuven).

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