Allogeneic hematopoietic cell transplantation (HCT) can cure many hematologic cancers and other life- threatening hematologic diseases but 20-50% of survivors develop chronic graft-versus-host disease (cGVHD), the leading cause of morbidity and mortality in transplant survivors. Chronic GVHD is an iatrogenic complication that can affect multiple organs, leading to clinical manifestations similar to autoimmune diseases such as systemic sclerosis, systemic lupus erythematosus, Sjogren?s syndrome, and lichen planus. Chronic GVHD requires prolonged treatment with potent immunosuppressive agents and is associated with high symptom burden and poor quality of life. The precise pathophysiology is unclear in humans. There are data supporting involvement of T and B cells, macrophages, dendritic cells, fibroblasts, endothelial cells, cytokines, chemokines and other proteins. However, information is derived from studies with few patients having heterogeneous clinical manifestations. This renewal application will address key gaps in our understanding: Can we identify biologically relevant cGVHD subgroups by studying large numbers of patients and using sophisticated analytic techniques to identify ?clusters? of similar patients? Is personalized medicine possible based on knowledge of underlying pathophysiology and the likelihood of response? To address these questions, we will use our extensive biorepository to test whether plasma proteins and peripheral blood cellular populations cluster with clinical manifestations. While these studies are ongoing, a new cohort will be enrolled to prospectively test the cluster findings and to investigate early biomarkers for treatment response. Participants will be enrolled prior to starting a new systemic initial or second-line cGVHD treatment, then followed at 1, 3 and 6 months later to assess clinical response. Successful completion of these aims will advance our understanding of the biologic underpinnings of the different forms of human cGVHD and guide therapeutic approaches, in order to decrease the morbidity and mortality of this common transplant complication.

Public Health Relevance

Chronic graft-versus-host disease (cGVHD) is the leading cause of morbidity and non-relapse mortality in survivors of allogeneic transplantation. Our understanding of the biologic abnormalities associated with different clinical phenotypes is lacking, preventing our ability to rationally choose cGVHD treatments. The proposed studies will bring together clinical, laboratory and statistical collaborators to address these knowledge gaps.

Agency
National Institute of Health (NIH)
Institute
National Cancer Institute (NCI)
Type
Research Project (R01)
Project #
2R01CA118953-11
Application #
9974230
Study Section
Clinical Oncology Study Section (CONC)
Program Officer
Henderson, Lori A
Project Start
2007-07-18
Project End
2025-03-31
Budget Start
2020-04-14
Budget End
2021-03-31
Support Year
11
Fiscal Year
2020
Total Cost
Indirect Cost
Name
Fred Hutchinson Cancer Research Center
Department
Type
DUNS #
078200995
City
Seattle
State
WA
Country
United States
Zip Code
98109
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