Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Current assets
Cash and cash equivalents	$ 64,326	$ 75,973
Short-term investments	108,671	162,212
Prepaid expenses and other current assets	5,781	6,106
Total current assets	178,778	244,291
Long-term investments	1,989	9,762
Property and equipment, net	10,252	12,985
Operating lease right-of-use assets	19,657	24,707
Restricted cash	2,026	2,026
Other noncurrent assets	577	1,167
Total assets	213,279	294,938
Current liabilities
Accounts payable	883	5,047
Accrued expenses	10,931	12,963
Current portion of operating lease liabilities	2,893	2,347
Current portion of deferred revenue	9,584	0
Current portion of other liabilities	404	1,129
Total current liabilities	24,695	21,486
Noncurrent operating lease liabilities	25,379	28,744
Deferred revenue, net of current portion	4,127	0
Other noncurrent liabilities	0	209
Total liabilities	54,201	50,439
Commitments and contingencies (Note 8)
Stockholder's equity
Preferred stock, $0.001 par value; 10,000 authorized; no shares issued and outstanding
Common stock, $0.001 par value, 200,000 shares authorized as of December 31, 2023 and December 31, 2022; 58,946 and 56,967 shares issued and outstanding as of December 31, 2023 and 2022, respectively.	59	57
Additional paid-in capital	667,861	641,422
Accumulated deficit	(508,861)	(396,188)
Accumulated other comprehensive income (loss)	19	(792)
Total stockholders' equity	159,078	244,499
Total liabilities and stockholders’ equity	$ 213,279	$ 294,938
Preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Preferred stock, shares authorized (in shares)	10,000,000	10,000,000