FOR IMMEDIATE RELEASE Contacts: Robert I. Kriebel Jonathan Nugent U.S. Bioscience Burns McClellan (800) 898-4404 (212) 213-0006 U.S. BIOSCIENCE ANNOUNCES THIRD QUARTER RESULTS WITH RECORD SALES OF ETHYOL(R) WEST CONSHOHOCKEN, PA, OCTOBER 21, 1999 -- U.S. BIOSCIENCE, INC. (AMEX: UBS) today reported a loss of $3,635,500 or $0.13 loss per common share outstanding for the third quarter of 1999, compared to a loss of $2,456,000 or $0.10 loss per common share in the corresponding 1998 quarter. The increased loss for the third quarter of 1999 reflects the expansion of the company's sales organization and increased research expenditures, even though revenues increased 11% over the prior year quarter. Product sales for the third quarter of 1999 increased 10% over the prior year. Ethyol(R) (amifostine) sales rose in the third quarter due to significantly higher than expected sales revenue from ALZA Corporation, the company's distribution partner in the United States, and revenues received from increased trade sales of Ethyol in Europe by Schering-Plough. Combined sales of NeuTrexin(R) (trimetrexate glucuronate) and Hexalen(R) (altretamine) were below the year ago quarter, but up over the 1999 second quarter. The company believes that sales of these products in the second and third quarters may have been influenced by transitional factors relating to the assumption of full responsibility for promotion of NeuTrexin and Hexalen in the United States by U.S. Bioscience, which occurred at the end of the second quarter. End-market sales of Ethyol in the United Sales, which are recorded by ALZA, rose by 85% over the prior year quarter to $17.7 million and to $34.8 million for the year to date, 48% higher than the corresponding 1998 nine month period. Operating expenses in the third quarter of 1999 increased from prior year levels due principally to increased research and development expenses and higher selling and marketing costs. These increases were partly offset by an improved gross margin resulting from an increase in revenues received from ALZA Corporation on their purchases of Ethyol from the company, lower product manufacturing costs and trade price increases for Hexalen and NeuTrexin. Research and development expenses rose due to increased costs for the company's Phase II study of lodenosine (FddA) (a trial recently suspended), its Phase III clinical trials investigating the use of Ethyol in radiation therapy and various chemotherapeutic regimens, and its Phase III clinical trials investigating the use of NeuTrexin as an additional agent in the treatment of colorectal cancer. Sales and marketing costs increased in the third quarter due to the continued expansion of the company's sales force as a result of the company regaining full promotional responsibility for NeuTrexin and Hexalen at the end of the second quarter. Cash and investments were approximately $51.9 million at September 30, 1999. U.S. Bioscience, Inc. (http://www.usbio.com), based in West Conshohocken, Pa., is a pharmaceutical company specializing in the development and commercialization of products for patients with cancer and AIDS. This release contains forward-looking statements which reflect management's current views of future events and operations. These forward-looking statements involve risks and uncertainties, including clinical trials, regulatory submissions and approvals, patent matters, market conditions, manufacturing and supply conditions, and other factors that could cause actual results to differ materially from those anticipated in any forward-looking statement. Additional information on factors that could cause such changes is contained in the company's Securities and Exchange Commission filings, copies of which are available from the company without charge. U.S. BIOSCIENCE, INC. - FINANCIAL HIGHLIGHTS _____________________________________________________________________________________________________________________________ THREE MONTHS ENDED NINE MONTHS ENDED CONSOLIDATED STATEMENTS OF OPERATIONS SEPTEMBER 30 SEPTEMBER 30 (Unaudited) 1999 1998 1999 1998 _____________________________________________________________________________________________________________________________ Revenues Net sales $ 6,460,600 $ 5,890,800 $ 18,050,500 $ 14,312,900 Net investment income 736,400 669,500 2,119,300 2,116,200 Licensing, royalty and other income 318,300 213,400 3,851,200 5,797,500 ------------ ------------ ------------ ------------- 7,515,300 6,773,700 24,021,000 22,226,600 Expenses Cost of sales 1,487,900 1,649,900 4,048,300 4,231,600 Selling, general and administrative costs 3,931,200 3,106,600 11,077,300 10,136,400 Research and development costs 5,709,300 4,435,200 17,396,200 13,467,200 Interest expense 22,400 38,000 76,000 119,900 ------------ ------------ ------------ ------------- 11,150,800 9,229,700 32,597,800 27,955,100 ______________________________________________________________________________________________________________________________ Net loss $ (3,635,500) $ (2,456,000) $ (8,576,800) $ (5,728,500) Net loss per common share Basic and Diluted $ (0.13) $ (0.10) $ (0.32) $ (0.24) _____________________________________________________________________________________________________________________________ Weighted average number of common shares outstanding Basic and Diluted 27,416,300 24,335,200 26,922,700 24,290,200 _____________________________________________________________________________________________________________________________ CONDENSED CONSOLIDATED BALANCE SHEETS SEPTEMBER 30, 1999 DECEMBER 31, (UNAUDITED) 1998 _____________________________________________________________________________________________________________________________ Current assets Cash and investments $ 20,288,700 $ 24,885,200 Other assets 9,156,100 5,339,300 ------------- --------------- Total current assets 29,444,800 30,224,500 Investment in long-term securities 31,579,700 17,063,700 _____________________________________________________________________________________________________________________________ Property, plant and equipment 5,162,200 5,433,700 Total assets $ 66,186,700 $ 52,721,900 _____________________________________________________________________________________________________________________________ Current liabilities $ 11,767,200 $ 11,544,500 Long-term liabilities 2,288,400 2,444,200 Total liabilities 14,055,600 13,988,700 Stockholders' equity 52,131,100 38,733,200 Total liabilities and stockholders' equity $ 66,186,700 $ 52,721,900