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.

[Q]: Cooperative effects for CYP2E1 differ between styrene and its metabolites.
[A]: CYP2E1


[Q]: Inhibition by pentosan polysulfate (PPS) of heparin-binding growth factors released from tumor cells and blockage by PPS of tumor growth in animals.
[A]: heparin-binding growth factors


[Q]: Sorafenib: recent update on activity as a single agent and in combination with interferon-alpha2 in patients with advanced-stage renal cell carcinoma.
[A]:
interferon-alpha2