If pathological evaluation of the specimen reveals tumor cells at the conjunctival margin, additional surgery or postoperative adjunctive chemotherapeutic drugs may be used after surgery, including interferon alpha 2b (IFNα-2b), 5-fluorouracil (5-FU) 1%, and mitomycin C (MMC) 0.02–0.04%. The gene discussed is IFNA2; the disease is neoplasm.