Condensed Consolidated Balance Sheets - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents	$ 156	$ 127
Marketable securities	813	632
Receivable from collaboration partners ($14 and $20 from a related party)	28	38
Prepaid expenses and other current assets	25	34
Total current assets	1,022	831
Long-term marketable securities	40	107
Property and equipment, net	49	51
Other noncurrent assets ($— and $6 from a related party)	75	106
Total assets	1,186	1,095
Current liabilities:
Accounts payable	15	17
Deferred revenue ($101 and $84 to a related party)	113	91
Other current liabilities	71	76
Total current liabilities	199	184
Deferred revenue, noncurrent ($184 and $291 to a related party)	214	307
Other noncurrent liabilities	138	142
Commitments
Stockholders’ equity:
Common stock and additional paid-in capital: $0.0001 par value per share; 400.0 shares authorized; 91.3 shares in 2024 and 75.5 shares in 2023 issued and outstanding	1,582	1,311
Accumulated deficit	(946)	(849)
Accumulated other comprehensive loss	(1)	0
Total stockholders’ equity	635	462
Total liabilities and stockholders’ equity	$ 1,186	$ 1,095