One type of medication known to influence FDG uptake is granulocyte colony-stimulating factor (G-CSF), a hematopoietic cytokine involved in the growth and development of bone marrow hematopoietic progenitor cells, which is used to manage chemotherapy-induced neutropenia in cancer patients (Hanaoka et al. 2011). The gene discussed is CSF3; the disease is neutropenia.