Alfacell Corp. said Friday that it will expand its Phase IIclinical trials of Onconase to include treatment of cancerpatients with malignant mesothelioma, a lung cancerassociated with asbestos exposure, and to urothelialcarcinoma, a form of bladder cancer.

The company is already conducting Phase II trials of Onconasein patients with solid tumors. Phase I/II trials are under wayin pancreatic cancer patients. Those trials combine Onconasewith Tamoxifen, a drug used to treat breast cancer.

Onconase is a natural purified protein whose mode of action isunknown.

The Bloomfield, N.J., company's stock is traded over thecounter on the "pink sheets."

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