Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents	$ 623,854	$ 234,207
Short-term marketable securities	279,811	315,803
Prepaid expenses and other current assets	7,615	9,952
Total current assets	911,280	559,962
Long-term marketable securities		19,283
Property and equipment, net	17	18
Right of use asset	946	1,008
Total assets	912,243	580,271
Current liabilities:
Accounts payable	13,783	7,038
Accrued expenses and other current liabilities	16,476	12,090
Total current liabilities	30,259	19,128
Loan payable, noncurrent	34,803	24,964
Warrant liability	178	54
Operating lease liability, noncurrent	750	819
Total liabilities	65,990	44,965
Commitments and contingencies (Note 12)
Stockholders' equity:
Common stock, $0.0001 par value, 150,000,000 shares authorized as of March 31, 2024 and December 31, 2023; 69,148,429 and 55,754,445 shares issued and outstanding as of March 31, 2024 and December 31, 2023, respectively	7	6
Additional paid-in capital	1,473,765	1,109,126
Accumulated other comprehensive (loss) income	(79)	270
Accumulated deficit	(627,440)	(574,096)
Total stockholders' equity	846,253	535,306
Total liabilities and stockholders' equity	$ 912,243	$ 580,271