A recombinant form of the endogenous human keratinocyte growth factor. Palifermin binds to epithelial cell surface receptors in the lining of the mouth and gastrointestinal tract, resulting in stimulation of epithelial cell proliferation, differentiation and upregulation of cytoprotective mechanisms. or Care given to improve the quality of life of patients who have a serious or life-threatening disease. The goal of palliative care is to prevent or treat as early as possible the symptoms of a disease, side effects caused by treatment of a disease, and psychological, social, and spiritual problems related to a disease or its treatment. Also called comfort care, supportive care, and symptom management.