Consolidated Balance Sheets - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 206	$ 148
Marketable securities	803	351
Receivable from collaboration partners ($39 and $745 from a related party)	39	745
Prepaid and other current assets	19	18
Total current assets	1,067	1,262
Long-term marketable securities	129	182
Property and equipment, net	35	32
Other noncurrent assets ($2 and $ - from a related party)	114	116
Total assets	1,345	1,592
Current liabilities:
Accounts payable	20	10
Deferred revenue ($97 and $97 to a related party)	97	102
Other current liabilities	76	54
Total current liabilities	193	166
Deferred revenue, noncurrent ($355 and $462 to a related party)	355	462
Other noncurrent liabilities	140	122
Commitments (Note 16)
Stockholders’ equity:
Preferred stock, $0.0001 par value per share; 10.0 shares authorized; no shares issued and outstanding	0	0
Common stock and additional paid-in capital, $0.0001 par value per share; 400.0 shares authorized; 72.9 shares in 2022 and 70.8 shares in 2021 issued and outstanding	1,206	1,118
Accumulated deficit	(542)	(275)
Accumulated other comprehensive loss	(7)	(1)
Total stockholders’ equity	657	842
Total liabilities and stockholders’ equity	$ 1,345	$ 1,592