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Collaboration arrangements and concentration of credit risk (Tables)
12 Months Ended
Dec. 31, 2022
Collaboration arrangements and concentration of credit risk  
Schedule of collaboration and license revenue

Years ended December 31, 

2022

2021

2020

(in thousands)

Bristol Myers Squibb

$

1,752

$

4,176

$

37,514

$

1,752

$

4,176

$

37,514

Schedule of amounts owed in relation to collaboration

December 31, 

December 31, 

    

2022

    

2021

(in thousands)

Bristol Myers Squibb

$

136

$

914

Total

$

136

$

914