Consolidated Balance Sheets - USD ($)	Dec. 31, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 54,097,000	$ 76,899,000
Restricted cash	305,000	305,000
Short-term investments	82,034,000
Accounts receivable	41,000	29,000
Prepaid expenses and other current assets	4,565,000	2,500,000
Total current assets	141,042,000	79,733,000
Property and equipment, net	919,000	1,193,000
Operating lease right-of-use asset	2,596,000
Prepaid expenses and other long-term assets		11,000
Total assets	144,557,000	80,937,000
Current liabilities:
Accounts payable	2,681,000	2,345,000
Accrued expenses and other current liabilities	5,616,000	5,477,000
Deferred revenue	106,000	96,000
Deferred rent, short term		123,000
Current operating lease liability	826,000
Note payable, short term	4,375,000
Total current liabilities	13,604,000	8,041,000
Note payable, long term	10,442,000	4,784,000
Non-current operating lease liability	2,485,000
Corporate bond, net of bond discount	1,834,000	1,638,000
Earn-out liabilities	5,513,000
Deferred rent, long term		712,000
Total liabilities	33,878,000	15,175,000
Commitments and contingencies
Redeemable convertible preferred stock:
Redeemable convertible preferred stock, $0.0001 par value: 100,000,000 and 48,102,729 shares authorized at December 31, 2022 and 2021, respectively; 0 and 43,318,218 shares issued and outstanding at December 31, 2022 and 2021, respectively		291,876,000
Stockholders' equity (deficit)
Common stock, $0.0001 par value: 1,000,000,000 and 63,315,481 shares authorized at December 31, 2022 and 2021, respectively; 78,022,924 and 1,674,106 shares issued and outstanding at December 31, 2022 and 2021, respectively	8,000
Additional paid-in capital	350,980,000
Accumulated deficit	(240,288,000)	(226,114,000)
Accumulated other comprehensive loss	(21,000)
Total stockholders' equity (deficit)	110,679,000	(226,114,000)
Total liabilities, redeemable convertible preferred stock and stockholders' equity (deficit)	$ 144,557,000	$ 80,937,000