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Kolltan Acquisition - Allocations of Assets and Liabilities (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 6 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Jun. 30, 2016 | Jun. 30, 2016 | Jun. 30, 2017 | Dec. 31, 2016 | Nov. 29, 2016
Summary of fair values of assets acquired and liabilities assumed at acquisition date |  |  |  |  |
Goodwill |  |  | $ 90,976 | $ 90,976 |
Kolltan |  |  |  |  |
Kolltan Acquisition |  |  |  |  |
Goodwill expected to be deductible for income tax purposes |  |  |  |  | $ 0
Summary of fair values of assets acquired and liabilities assumed at acquisition date |  |  |  |  |
Cash and cash equivalents |  |  |  |  | 8,160
Other current and long-term assets |  |  |  |  | 799
Property and equipment, net |  |  |  |  | 2,072
In-process research and development (IPR&D) |  |  |  |  | 61,690
Goodwill |  |  |  |  | 82,011
Deferred tax liabilities, net |  |  |  |  | (23,393)
Other assumed liabilities |  |  |  |  | (9,974)
Total |  |  |  |  | $ 121,365
Pro Forma Financial Information |  |  |  |  |
Net loss | $ 39,500 | $ 84,800 |  |  |
Basic and Diluted Net Loss Per Common Share | $ (0.34) | $ (0.73) |  |  |

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