Condensed Consolidated Balance Sheets - Unaudited - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Current assets
Cash and cash equivalents	$ 214,508	$ 60,649
Marketable securities	217,023	302,301
Interest receivable	2,748	1,375
Prepaid assets	3,532	3,399
Prepaid clinical	12,451	6,413
Other current assets	0	9
Total current assets	450,262	374,146
Fixed assets, net	42,567	42,143
Right of use assets, net	6,334	4,263
Total assets	499,163	420,552
Current liabilities
Accounts payable	2,933	5,098
Lease liabilities	1,032	803
Accrued expenses and other	15,109	17,665
Income taxes payable	1,515	1,472
Total current liabilities	20,589	25,038
Income tax payable, net of current portion	568	568
Lease liabilities, net of current portion	5,640	3,610
Total liabilities	26,797	29,216
Commitments and contingencies
Redeemable noncontrolling interest	1,444,737	1,494,732
Shareholders' deficit
Additional paid-in capital	189,267	36,114
Accumulated other comprehensive (loss) gain	(6)	130
Accumulated deficit	(1,161,661)	(1,139,663)
Total shareholders' deficit	(972,371)	(1,103,396)
Total liabilities and shareholders' deficit	499,163	420,552
Common Class A [Member]
Shareholders' deficit
Common stock value	13	6
Common Class B [Member]
Shareholders' deficit
Common stock value	$ 16	$ 17