Idelalisib reduces regulatory T cells and activates T helper 17 cell differentiation in relapsed refractory patients with chronic lymphocytic leukaemia.
Br J Haematol
; 197(2): 207-211, 2022 04.
Article
in En
| MEDLINE
| ID: mdl-35170759
ABSTRACT
Phosphatidylinositol 3 kinase (PI3K) inhibitors such as idelalisib have been associated with potentially severe autoimmune toxicity. In the present study, we demonstrate that relapsed refractory patients with chronic lymphocytic leukaemia treated with idelalisib rituximab on the phase III registration trial show uniform decrease in regulatory T cells (Tregs) and increase in CD8 T cells with treatment. Patients who do not develop toxicity show enrichment for T cells expressing multiple chemokine receptors, while those who do develop toxicity have an activated CD8 T cell population with T helper 17 cell differentiation at baseline, which then increases, leading to an increased CD8Treg ratio that likely triggers autoimmune toxicity.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Leukemia, Lymphocytic, Chronic, B-Cell
/
T-Lymphocytes, Regulatory
Limits:
Humans
Language:
En
Journal:
Br J Haematol
Year:
2022
Document type:
Article
Affiliation country:
United States