hrp0098p2-309 | Late Breaking | ESPE2024

Inadequate immune response post- vaccination and recurrent bacterial infections in a patient with X-linked hypophosphatemia, resolved under Burosumab therapy

Ertl Diana-Alexandra , Craiu Irina , Morelle Guillaume , Rothenbuhler Anja , Audrain Christelle , Berkenou Jugurtha , Linglart Agnes

Background: X-linked hypophosphatemia (XLH) is a rare disease caused by PHEX pathogenic variants leading to elevated fibroblast growth factor 23 (FGF23). FGF23 was shown to modulate the immune system. Excessive FGF23 signalling in mice with chronic renal disease results in deficient recruitment of neutrophiles in the infected tissues and to inadequate immune reaction against bacterial aggression (Rossaint et al). An increased risk for recurrent infect...