Celgene Corporation Release: 107 Abstracts On Clinical Data Evaluating REVLIMID(R) And Thalidomide To Be Presented At The 47th American Society of Hematology Meeting

SUMMIT, N.J., Dec. 8 /PRNewswire-FirstCall/ -- Celgene Corporation announced today that clinical investigators from leading cancer research centers will present data from recent and on-going clinical trials of thalidomide, and REVLIMID in multiple indications at The 47th American Society of Hematology Meeting, one of the largest oncology meetings in the world, in Atlanta, GA from December 10-13, 2005.

The presentations will include 30 abstracts clinically evaluating REVLIMID in both oral and poster sessions, including a plenary session, across a broad range of disease indications, as well as 77 abstracts clinically evaluating thalidomide in both oral and poster sessions.

Safety Notice

THALOMID(R) (thalidomide) Capsules 50 mg, 100 mg, & 200 mg

If thalidomide is taken during pregnancy, it can cause severe birth defects or death to an unborn baby. Thalidomide should never be used by women who are pregnant or who could become pregnant while taking the drug. Even a single dose, one capsule (50 mg, 100 mg and 200 mg), taken by a pregnant woman can cause severe birth defects. Baecause thalidomide is present in the semen of male patients, males receiving thalidomide must always use a latex condom during sexual contact with women of childbearing potential even if he has undergone a successful vasectomy. Thalidomide can only be marketed under a special restricted distribution program. This program is called the "System for Thalidomide Education and Prescribing Safety" (S.T.E.P.S.(R)). Under this program, only registered prescribers and pharmacists may dispense the drug. In addition, patients must be advised of, agree to and comply with the requirements of S.T.E.P.S.

Thalidomide is known to cause nerve damage that may be permanent. Peripheral neuropathy is a common, potentially severe, side effect of treatment with thalidomide that may be irreversible. Patients with neoplastic and various inflammatory conditions being treated with thalidomide in combination with other agents may have an increased incidence of thromboembolic events such as pulmonary embolism, deep vein thrombophlebitis, thrombophlebitis, or thrombosis. Decreased white blood cell counts, including neutropenia, have been reported in the clinical use of thalidomide. In placebo controlled clinical trials of HIV-seropositive patient populations, there have been reports of increased plasma HIV RNA levels associated with thalidomide therapy. The most common adverse events observed in clinical use in ENL and HIV-seropositive patient populations are rash, maculo-papular rash, drowsiness/somnolence, peripheral neuropathy, dizziness/orthostatic hypotension, neutropenia, and increased HIV-viral load. Patients should be advised about these associated adverse events and routinely monitored by a physician during treatment with thalidomide. Patients should be instructed to not extensively handle or open thalidomide capsules and to maintain storage of capsules in blister packs until ingestion.

About THALOMID(R)

THALOMID (thalidomide), manufactured by Celgene Corporation, received U.S. Food and Drug Administration (FDA) clearance on July 16, 1998 for the acute treatment of cutaneous manifestations of moderate to severe erythema nodosum leprosum (ENL) and as maintenance therapy for prevention and suppression of the cutaneous manifestations of ENL recurrence. Thalidomide is not indicated as monotherapy for ENL treatment in the presence of moderate to severe neuritis. Thalidomide currently has a pending regulatory application (sNDA) under review by the Food and Drug Administration (FDA). Thalidomide is not presently indicated or approved by the FDA for use in any related cancer.

About Celgene(R)

Celgene Corporation, headquartered in Summit, New Jersey, is an integrated global pharmaceutical company engaged primarily in the discovery, development and commercialization of innovative therapies for the treatment of cancer and inflammatory diseases through gene and protein regulation. For more information, please visit the Company's website at http://www.celgene.com.

This release contains forward-looking statements which are subject to known and unknown risks, delays, uncertainties and other factors not under the Company's control, which may cause actual results, performance or achievements of the Company to be materially different from the results, performance or other expectations expressed or implied by these forward-looking statements. These factors include results of current or pending research and development activities, actions by the FDA and other regulatory authorities, and other factors described in the Company's filings with the Securities and Exchange Commission such as our 10K, 10Q and 8K reports.

Celgene Corporation

CONTACT: Robert J. Hugin, Senior VP and CFO, +1-908-673-9102, or Brian P.Gill, Director PR/IR, +1-908-673-9530, both of Celgene Corporation

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