Condensed Consolidated Balance Sheets (Unaudited) - USD ($)	Jun. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 106,197,000	$ 34,791,000
Prepaid expenses and other current assets	3,873,000	1,654,000
Total current assets	110,070,000	36,445,000
Deferred offering costs	2,540,000
Property and equipment, net	10,451,000	5,659,000
Right-of-use assets	6,185,000	6,873,000
Restricted cash	595,000	595,000
Long-term deposit	166,000	166,000
Total assets	130,007,000	49,738,000
Current liabilities:
Accounts payable	3,547,000	2,910,000
Accrued expenses and other current liabilities	3,749,000	2,494,000
Operating lease liability, current portion	1,575,000	1,415,000
Deferred revenue, current portion	11,746,000	10,627,000
Total current liabilities	20,617,000	17,446,000
Deferred revenue, net of current portion	4,560,000	8,816,000
Operating lease liability, net of current portion	5,211,000	6,019,000
Other long term liabilities	238,000	238,000
Total liabilities	30,626,000	32,519,000
Commitments and contingencies (Note 8)
Convertible preferred stock (Note 5)	159,411,000	59,681,000.00
Stockholders' deficit:
Common stock, $0.0001 par value; 165,210,543 shares authorized; 1,682,805 and 1,574,138 shares issued; and 1,419,819 and 1,135,858 shares issued outstanding at June 30, 2021 and December 31, 2020, respectively	1,000	1,000
Additional paid-in capital	2,088,000	1,070,000
Accumulated deficit	(62,119,000)	(43,533,000)
Total stockholders' deficit	(60,030,000)	(42,462,000)
Total liabilities, convertible preferred stock and stockholders' deficit	$ 130,007,000	$ 49,738,000