1. Distinct Immunophenotypes of T Cells in Bronchoalveolar Lavage Fluid From Leukemia Patients With Immune Checkpoint Inhibitors-Related Pulmonary Complications.
- Author
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Kim ST, Sheshadri A, Shannon V, Kontoyiannis DP, Kantarjian H, Garcia-Manero G, Ravandi F, Im JS, Boddu P, Bashoura L, Balachandran DD, Evans SE, Faiz S, Ruiz Vazquez W, Divenko M, Mathur R, Tippen SP, Gumbs C, Neelapu SS, Naing A, Wang L, Diab A, Futreal A, Nurieva R, and Daver N
- Subjects
- Adult, Aged, Aged, 80 and over, Antineoplastic Agents, Immunological adverse effects, Bronchoalveolar Lavage Fluid immunology, Female, Humans, Immune Checkpoint Inhibitors adverse effects, Immunophenotyping, Leukemia, Myeloid, Acute drug therapy, Male, Middle Aged, Myelodysplastic Syndromes drug therapy, Pneumonia chemically induced, Bronchoalveolar Lavage Fluid cytology, Leukemia, Myeloid, Acute immunology, Myelodysplastic Syndromes immunology, Pneumonia immunology, T-Lymphocytes immunology
- Abstract
Patients with acute myeloid leukemia (AML) and myelodysplastic syndrome (MDS) treated with immune checkpoint inhibitors (ICIs) are at risk of pneumonitis as well as pneumonia (combined henceforth as ICI-related pulmonary complications). Little is known about the cellular and molecular mechanisms underlying ICI-related pulmonary complications. We characterized lymphocytes from bronchoalveolar lavage (BAL) fluid and peripheral blood from seven AML/MDS patients with pulmonary symptoms after ICI-based therapy (ICI group) and four ICI-naïve AML/MDS patients with extracellular bacterial or fungal pneumonias (controls). BAL T cells in the ICI group were clonally expanded, and BAL IFNγ
+ IL-17- CD8+ T and CXCR3+ CCR6+ Th17/Th1 cells were enriched in the ICI group. Our data suggest that these cells may play a critical role in the pathophysiology of ICI-related pulmonary complications. Understanding of these cell populations may also provide predictive and diagnostic biomarkers of ICI-related pulmonary complications, eventually enabling differentiation of pneumonitis from pneumonia in AML/MDS patients receiving ICI-based therapies., Competing Interests: SN has received research support from Kite/Gilead, Cellectis, Poseida, Merck, Acerta, Karus, BMS, Unum Therapeutics, Allogene, and Precision Biosciences; served as consultant and advisory board member for Kite/Gilead, Celgene, Novartis, Unum Therapeutics, Pfizer, Merck, Precision Biosciences, Cell Medica, Incyte, Allogene, Calibr, and Legend Biotech; and has patents related to cell therapy. ND has received research funding from Daiichi Sankyo, Bristol-Myers Squibb, Pfizer, Karyopharm, Sevier, Genentech, and ImmunoGen and has served in a consulting or advisory role for Daiichi Sankyo, Bristol-Myers Squibb, Pfizer, Novartis, Celgene, AbbVie, and Agios. The remaining authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2021 Kim, Sheshadri, Shannon, Kontoyiannis, Kantarjian, Garcia-Manero, Ravandi, Im, Boddu, Bashoura, Balachandran, Evans, Faiz, Ruiz Vazquez, Divenko, Mathur, Tippen, Gumbs, Neelapu, Naing, Wang, Diab, Futreal, Nurieva and Daver.)- Published
- 2021
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