Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 64,330	$ 8,993
Marketable securities	296,112	63,119
Prepaid expenses and other current assets	6,686	1,854
Total current assets	367,128	73,966
Property and equipment, net	7,224	3,984
Restricted cash	5,237	463
Operating lease right-of-use assets	1,839	0
Other long term assets	2,696	0
Total assets	384,124	78,413
Current liabilities:
Accounts payable	7,077	36
Accrued expenses	12,992	7,189
Operating lease obligations, current portion	1,955	0
Deferred rent, current portion	0	90
Total current liabilities	22,024	7,315
Deferred rent, net of current portion	0	125
Success payment liability (See Notes 5, 8 and 15)	4,371	2,806
Antidilution rights liability (See Notes 5, 8 and 15)	0	6,916
Other long term liabilities	377	0
Total liabilities	26,772	17,162
Commitments and contingencies (See Note 7 and 8)
Convertible preferred stock (See Note 10)
Stockholders’ equtiy (deficit):
Preferred stock, $0.001 par value; 5,000,000 shares authorized, no shares issued and oustanding
Common stock, $0.001 par value; 200,000,000 and 255,000,000 shares authorized, 48,511,735 and 3,123,424 shares issued at December 31, 2021 and 2020, respectively; 48,511,735 and 2,585,789 shares outstanding at December 31, 2021 and 2020, respectively	49	3
Additional paid-in capital	544,381	2,616
Accumulated other comprehensive (loss) income	(228)	8
Accumulated deficit	(186,850)	(66,536)
Total stockholders’ equity (deficit)	357,352	(63,909)
Total liabilities, convertible preferred stock, and stockholders’ equity (deficit)	384,124	78,413
Convertible Preferred Stock
Current liabilities:
Convertible preferred stock (See Note 10)	0	125,160
Stockholders’ equtiy (deficit):
Preferred stock, $0.001 par value; 5,000,000 shares authorized, no shares issued and oustanding	$ 0	$ 125,160