<ARTICLE>                     5
<LEGEND>
The schedule contains consolidated summary financial information extracted from
Form 10-Q for the quarterly period ended June 30, 1998 and is qualified in its
entirety by reference to such financial statements.
</LEGEND>

       
                                   
<PERIOD-TYPE>                               6-MOS
<FISCAL-YEAR-END>                     DEC-31-1998
<PERIOD-START>                        JAN-01-1998
<PERIOD-END>                          JUN-30-1998
<CASH>                                 77,297,000
<SECURITIES>                            9,224,000
<RECEIVABLES>                                   0
<ALLOWANCES>                                    0
<INVENTORY>                                     0
<CURRENT-ASSETS>                       87,647,000
<PP&E>                                  4,573,000
<DEPRECIATION>                           (799,000)
<TOTAL-ASSETS>                         91,473,000
<CURRENT-LIABILITIES>                  12,896,000
<BONDS>                                   287,000
<PREFERRED-MANDATORY>                           0
<PREFERRED>                                     0
<COMMON>                                   24,000
<OTHER-SE>                             78,266,000
<TOTAL-LIABILITY-AND-EQUITY>           91,473,000
<SALES>                                         0
<TOTAL-REVENUES>                                0
<CGS>                                           0
<TOTAL-COSTS>                                   0
<OTHER-EXPENSES>                       32,637,000
<LOSS-PROVISION>                                0
<INTEREST-EXPENSE>                              0
<INCOME-PRETAX>                       (30,664,000)
<INCOME-TAX>                                    0
<INCOME-CONTINUING>                   (30,664,000)
<DISCONTINUED>                                  0
<EXTRAORDINARY>                                 0
<CHANGES>                                       0
<NET-INCOME>                          (30,664,000)
<EPS-PRIMARY>                               (1.41)
<EPS-DILUTED>                               (1.41)