Condensed Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 394,804	$ 19,782
Restricted cash	149	35
Prepaid expenses and other current assets	6,276	1,286
Total current assets	401,229	21,103
Property, plant and equipment, net	5,834	1,461
Operating lease right-of-use assets	9,077
Other assets	12
Total assets	416,152	22,564
Current liabilities:
Accounts payable	1,763	630
Accrued compensation	1,659	466
Accrued research costs	1,730	1,764
Accrued expenses and other current liabilities	1,314	126
Current portion of operating lease liabilities	4,806
Series A redeemable convertible preferred stock tranche liability		29,062
Total current liabilities	11,272	32,048
Non-current operating lease liabilities	4,684
Other liabilities	64	316
Total liabilities	16,020	32,364
Commitments and contingencies (Note 7)
Series A redeemable convertible preferred stock, $0.00001 par value; zero and 45,024,986 shares authorized as of September 30, 2021 and December 31, 2020, respectively; zero and 30,019,945 shares issued and outstanding as of September 30, 2021 and December 31, 2020, respectively; aggregate liquidation preference of $30,020 as of December 31, 2020		55,608
Stockholders’ equity (deficit):
Preferred stock, $0.00001 par value, 10,000,000 and zero shares authorized as of September 30, 2021 and December 31, 2020, respectively; and no shares issued and outstanding as of September 30, 2021 and December 31, 2020, respectively;
Common stock, $0.00001 par value, 300,000,000 and 80,000,000 shares authorized as of September 30, 2021 and December 31, 2020, respectively; 58,079,002 and 10,279,102 shares issued and outstanding as of September 30, 2021 and December 31, 2020, respectively	1
Additional paid-in-capital	522,552	5,183
Accumulated deficit	(122,421)	(70,591)
Total stockholders’ equity (deficit)	400,132	(65,408)
Total liabilities, redeemable convertible preferred stock, and stockholders’ equity (deficit)	$ 416,152	$ 22,564