Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
CURRENT ASSETS:
Cash and cash equivalents	$ 53,668	$ 115,826
Marketable securities	249,563	203,495
Unbilled receivable	2,000	2,000
Restricted cash, current	150	150
Prepaid expenses and other current assets	1,615	2,440
Total current assets	306,996	323,911
Property and equipment, net	3,088	1,645
Restricted cash	198	198
Operating lease right-of-use assets	14,327
TOTAL ASSETS	324,609	325,754
CURRENT LIABILITIES:
Accounts payable	4,753	1,710
Accrued expenses and other current liabilities	8,154	8,691
Operating lease liabilities, current portion	1,173
Term loan, current portion	714	480
Total current liabilities	14,794	10,881
Operating lease liabilities, noncurrent	12,936
Other noncurrent liabilities		8
Term loan, noncurrent	1,710	1,916
TOTAL LIABILITIES	29,440	12,805
STOCKHOLDERS’ EQUITY
Preferred stock, $0.0001 par value; 10,000,000 shares authorized, and no shares issued and outstanding as of March 31, 2022 and December 31, 2021
Additional paid-in capital	418,603	416,710
Accumulated deficit	(122,298)	(103,707)
Accumulated other comprehensive loss	(1,140)	(58)
TOTAL STOCKHOLDERS’ EQUITY	295,169	312,949
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	324,609	325,754
Common Stock Class Undefined
STOCKHOLDERS’ EQUITY
Common stock, $0.0001 par value; 500,000,000 shares authorized, 38,229,275 and 38,224,299 shares issued and outstanding as of March 31, 2022 and December 31, 2021, respectively	$ 4	$ 4