Condensed Consolidated Balance Sheets - USD ($)	Sep. 30, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 89,661,000	$ 76,899,000
Restricted cash	305,000	305,000
Short-term investments	66,696,000
Accounts receivable	30,000	29,000
Prepaid expenses and other current assets	4,586,000	2,500,000
Total current assets	161,278,000	79,733,000
Property and equipment, net	996,000	1,193,000
Operating lease right-of-use asset	2,760,000
Prepaid expenses and other long-term assets		11,000
Total assets	165,034,000	80,937,000
Current liabilities:
Accounts payable	3,486,000	2,345,000
Accrued expenses and other current liabilities	6,240,000	5,477,000
Deferred revenue	109,000	96,000
Deferred rent, short term	2,000	123,000
Current operating lease liability	803,000
Note payable, short term	2,500,000
Total current liabilities	13,140,000	8,041,000
Note payable, long term	12,436,000	4,784,000
Non-current operating lease liability	2,701,000
Corporate bond, net of bond discount	1,785,000	1,638,000
Earn-out liabilities	11,100,000
Deferred rent, long term		712,000
Total liabilities	41,162,000	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 September 30, 2022 and December 31, 2021, respectively; 0 and 43,318,218 shares issued and outstanding at September 30, 2022 and December 31, 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 September 30, 2022 and December 31, 2021, respectively; 77,858,746 and 1,674,106 share issued and outstanding at September 30, 2022 and December 31, 2021, respectively	8,000
Additional paid-in capital	347,330,000
Accumulated deficit	(223,473,000)	(226,114,000)
Accumulated other comprehensive gain	7,000
Total stockholders' equity (deficit)	123,872,000	(226,114,000)
Total liabilities, redeemable convertible preferred stock and stockholders' equity (deficit)	$ 165,034,000	$ 80,937,000