Condensed Consolidated Balance Sheets - USD ($)	Dec. 31, 2023	Dec. 31, 2022
Current assets
Cash and cash equivalents	$ 60,649,000	$ 490,252,000
Marketable securities	302,301,000	0
Interest receivable	1,375,000	0
Prepaid assets	3,399,000	2,624,000
Prepaid clinical	6,413,000	10,459,000
Other current assets	9,000	1,384,000
Total Current Assets	374,146,000	504,719,000
Fixed assets, net	42,143,000	10,708,000
Right of use assets, net	4,263,000	2,356,000
Intangible assets, net	0	213,000
Total assets	420,552,000	517,996,000
Current liabilities
Accounts payable	5,098,000	3,044,000
Lease liabilities	803,000	493,000
Accrued expenses and other	17,665,000	7,336,000
Income taxes payable	1,472,000	0
Total current liabilities	25,038,000	10,873,000
Income tax payable, net of current portion	568,000	278,000
Lease liabilities, net of current portion	3,610,000	1,906,000
Total liabilities	29,216,000	13,057,000
Commitments and Contingencies
Redeemable noncontrolling interest	1,494,732,000	1,601,555,000
Shareholders' deficit / members' equity:
Additional paid-in capital	36,114,000	7,476,000
Accumulated other comprehensive loss	130,000	0
Accumulated deficit	(1,139,663,000)	(1,104,116,000)
Total shareholders' deficit / members equity	(1,103,396,000)	(1,096,616,000)
Total liabilities and shareholders' deficit/members' equity	420,552,000	517,996,000
Common Class A [Member]
Shareholders' deficit / members' equity:
Common stock value	6,000	6,000
Common Class B [Member]
Shareholders' deficit / members' equity:
Common stock value	$ 17,000	$ 18,000