Condensed Consolidated Balance Sheets - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents	$ 201	$ 127
Marketable securities	888	632
Receivable from collaboration partners ($2 and $20 from a related party)	16	38
Prepaid expenses and other current assets	22	34
Total current assets	1,127	831
Long-term marketable securities	2	107
Property and equipment, net	48	51
Other noncurrent assets ($— and $6 from a related party)	75	106
Total assets	1,252	1,095
Current liabilities:
Accounts payable	13	17
Deferred revenue ($93 and $84 to a related party)	105	91
Other current liabilities	97	76
Total current liabilities	215	184
Deferred revenue, noncurrent ($262 and $291 to a related party)	289	307
Long-term debt	47	0
Other noncurrent liabilities	136	142
Commitments
Stockholders’ equity:
Common stock and additional paid-in capital: $0.0001 par value per share; 400.0 shares authorized; 91.5 shares in 2024 and 75.5 shares in 2023 issued and outstanding	1,602	1,311
Accumulated deficit	(1,038)	(849)
Accumulated other comprehensive loss	1	0
Total stockholders’ equity	565	462
Total liabilities and stockholders’ equity	$ 1,252	$ 1,095