In this task, you are given a sentence. You are expected to recognize the name of gene or protein. Although there might be several correct answers, you need to write one of them.

Input: Consider Input: Effect of cyproheptadine on serum leptin levels.

Output: leptin


Input: Consider Input: The selective SYK inhibitor P505-15 (PRT062607) inhibits B cell signaling and function in vitro and in vivo and augments the activity of fludarabine in chronic lymphocytic leukemia.

Output: SYK


Input: Consider Input: Neuronal expression of glucosylceramide synthase in central nervous system regulates body weight and energy homeostasis.


Output: glucosylceramide synthase