Condensed Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 150,996	$ 386,200
Short-term investments	141,120
Prepaid expenses and other current assets	9,416	2,804
Total current assets	301,532	389,004
Property and equipment, net	5,657	3,272
Operating lease right-of-use assets	654
Long-term investments	48,835
Restricted cash	871
Other assets	505	550
Total noncurrent assets	56,522	3,822
Total assets	358,054	392,826
Current liabilities:
Accounts payable	23,697	29,785
Accrued compensation	1,409	284
Accrued manufacturing expenses	7,357	13,012
Accrued expenses (including related party accrual of $725 and $677 as of June 30, 2021 and December 31, 2020, respectively)	7,531	3,766
Deferred rent — current		14
Operating lease liabilities — current	710
Total current liabilities	40,704	46,861
Deferred rent — long-term		10
Operating lease liabilities — long-term	225
Other liabilities	100	112
Total liabilities	41,029	46,983
Commitments and contingencies (Note 6)
Stockholders' Equity
Preferred stock, $0.001 par value — 10,000,000 shares authorized at June 30, 2021 and December 31, 2020; no shares issued and outstanding at June 30, 2021 and December 31, 2020
Common stock, $0.001 par value — 500,000,000 shares authorized at June 30, 2021 and December 31, 2020; 51,963,770 and 51,071,593 shares issued and outstanding at June 30, 2021 and December 31, 2020, respectively	55	54
Additional paid-in capital	560,441	544,353
Accumulated other comprehensive loss	(8)
Accumulated deficit	(243,463)	(198,564)
Total stockholders' equity	317,025	345,843
Total liabilities, redeemable convertible preferred stock and stockholders' equity	$ 358,054	$ 392,826