OBJECTIVES:
Primary
* To correlate circulating myeloid-derived suppressor cells (MDSC) and Treg frequencies with clinical outcome.
Secondary
* To correlate circulating anti-sargramostim (GM-CSF) antibody levels with clinical outcome.
OUTLINE: Archived peripheral blood mononuclear cells and serum samples are analyzed for circulating myeloid-derived suppressor cells, Treg (CD3+/CD4+/CD25hi/FOXP3+) frequency, and anti-sargramostim (anti-GM-CSF) antibody levels by flow cytometry and anti-GM-CSF neutralizing antibody assay.
