Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 130,191	$ 232,545
Accounts receivable, net	308	183
Prepaid expenses and other current assets	2,783	3,387
Total current assets	133,282	236,115
Property and equipment, net	3,312	10,528
Operating lease right-of-use-assets	30,920	12,907
Other long-term assets	1,776	6,278
Total assets	169,290	265,828
Current liabilities:
Accounts payable	3,768	5,122
Accrued compensation	4,212	6,369
Accrued liabilities	989	6,383
Operating lease liabilities, current portion	3,703	1,232
Total current liabilities	12,672	19,106
Operating lease liabilities, long-term portion	29,879	12,745
Total liabilities	42,551	31,851
Commitments and contingencies (Note 6)
Stockholders' equity:
Common stock, $0.0001 par value; 200,000,000 shares authorized at December 31, 2022 and 2021; 26,795,800 and 26,408,031 shares issued and outstanding at December 31, 2022 and 2021, respectively	3	3
Additional paid-in capital	604,687	598,913
Accumulated deficit	(477,954)	(364,942)
Total stockholders' equity	126,739	233,977
Total liabilities and stockholders equity	169,290	265,828
Series 1 Convertible Preferred Stock
Stockholders' equity:
Series 1 convertible preferred stock, $0.0001 par value-60,000,000 shares authorized as of December 31, 2022 and 2021; 29,863,674 shares issued and outstanding as of December 31, 2022 and 2021, respectively; aggregate liquidation preference of $3 as of December 31, 2022 and 2021	$ 3	$ 3