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Related Party Transactions (Details) - Memorial Sloan Kettering Cancer Center [Member] | 12 Months Ended
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Dec. 31, 2017 USD ($)
Receipt Of Regulatory Approval From U S Fda [Member] |
Summary of milestone payments related to related party |
Milestone payments on approval | $ 1,750,000
New Drug Application [Member] |
Summary of milestone payments related to related party |
Milestone payments on approval | $ 750,000

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Period Type: | duration

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- Details
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- Details
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- Details
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