hrp0098p1-2 | Adrenals and HPA Axis 1 | ESPE2024

Reciprocal regulation of 11b-HSD1/2 correlates initial glucocorticoids responsiveness in childhood acute lymphoblastic leukemia

Sai Shuji , Hirabayashi Shinsuke , Saito Yusuke , Chapman Karen , Manabe Atsushi

Background: Synthetic glucocorticoid (GC) form crucial first-line treatment for childhood acute lymphoblastic leukemia (ALL). However, some patients reveal GC resistance with unknown mechanism. We have previously shown that reciprocal regulation of the GC metabolizing enzymes, 11beta-hydroxysteroid dehydrogenase types 1 and 2 (11b-HSD1 and 11b-HSD2) is associated with GC sensitivity/resistance in ALL at diagnosis. 11b-HSD1 predominantly regenerates active GC f...