<ARTICLE>                     5
<CIK>                         0000816284
<NAME>                        Celgene Financial Data Schedule
       
                             
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                                  Dec-31-1996
<PERIOD-END>                                       Dec-31-1996

<CASH>                                                 922,961
<SECURITIES>                                        16,892,023
<RECEIVABLES>                                          378,595
<ALLOWANCES>                                                 0
<INVENTORY>                                                  0
<CURRENT-ASSETS>                                    18,829,420
<PP&E>                                               9,869,507
<DEPRECIATION>                                       7,928,892
<TOTAL-ASSETS>                                      20,937,862
<CURRENT-LIABILITIES>                                2,434,278
<BONDS>                                              2,026,043
<PREFERRED-MANDATORY>                                        0
<PREFERRED>                                         13,883,416
<COMMON>                                               106,114
<OTHER-SE>                                           2,075,479
<TOTAL-LIABILITY-AND-EQUITY>                        20,937,862
<SALES>                                              2,502,380
<TOTAL-REVENUES>                                     2,502,380
<CGS>                                                  981,448
<TOTAL-COSTS>                                       21,305,692
<OTHER-EXPENSES>                                             0
<LOSS-PROVISION>                                             0

<INTEREST-EXPENSE>                                     323,913
<INCOME-PRETAX>                                    (17,818,981)
<INCOME-TAX>                                                 0
<INCOME-CONTINUING>                                (17,818,981)
<DISCONTINUED>                                               0
<EXTRAORDINARY>                                              0
<CHANGES>                                                    0
<NET-INCOME>                                       (17,818,981)
<EPS-PRIMARY>                                            (2.29)
<EPS-DILUTED>                                                0