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Collaboration and Licensing Agreements (Tables)
9 Months Ended
Sep. 30, 2023
Collaboration and Licensing Agreements  
Schedule of Deferred Revenue Balances
The following tables present changes in our current and non-current deferred revenue balances during the reporting period, which are all attributable to the 2017 Kyowa Kirin Agreement (in thousands):
20232022
CurrentNon-CurrentCurrentNon-Current
Balance at January 1,$4,211$9,025$$4,727
Amounts invoiced as prepayments for product supply1,1824,530427,794
Decrease for revenue recognized for product supply(4,586)
Reclassify amounts to be recognized in the next twelve months3,265(3,265)3,961(3,961)
Balance at September 30,$4,072$10,290$4,003$8,560