Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 133,477	$ 8,080
Prepaid expenses and other current assets	859	23
Total current assets	134,336	8,103
Property and equipment, net	1,154	1,103
Operating lease right-of-use assets	388	836
Deferred offering costs	3,501
Other assets, noncurrent	109	109
Total assets	139,488	10,151
Current liabilities:
Accounts payable	1,927	1,077
Accrued expenses and other current liabilities	5,462	1,997
Derivative liability, current portion	9,123
Operating lease liabilities, current portion	325	615
Total current liabilities	16,837	3,689
Derivative liability, net of current portion	67
Operating lease liabilities, net of current portion		165
Total liabilities	16,904	3,854
Commitments and contingencies (Note 12)
Stockholders’ deficit:
Common stock, $0.001 par value per share; 167,000,000 and 40,300,000 shares authorized at September 30, 2021 and December 31, 2020, respectively; 2,194,326 and 2,177,956 shares issued at September 30, 2021 and December 31, 2020 and 1,639,600 and 1,289,342 shares outstanding at September 30, 2021 and December 31, 2020, respectively	2	1
Additional paid-in capital	3,448	97
Accumulated deficit	(74,889)	(15,743)
Total stockholders’ deficit	(71,439)	(15,645)
Total liabilities, convertible preferred stock and stockholders’ deficit	139,488	10,151
Series A Convertible Preferred Stock
Current liabilities:
Convertible Preferred Stock	21,942	$ 21,942
Series B Convertible Preferred Stock
Current liabilities:
Convertible Preferred Stock	$ 172,081