Condensed Consolidated Statements of Cash Flows (unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Cash flows from operating activities:
Net loss	$ (41,043)	$ (29,896)
Adjustments to reconcile net loss to net cash used in operating activities:
Stock-based compensation	3,690	1,988
Depreciation expense	845	723
Changes in operating assets and liabilities:
Prepaid expenses and other current assets	(172)	(1,431)
Operating lease right-of-use assets	747	705
Other assets	(787)
Accounts payable	(167)	1,167
Accrued expenses and other current liabilities	2,814	966
Operating lease liabilities	(796)	(731)
Deferred revenue	3,648	11,986
Net cash used in operating activities	(31,221)	(14,523)
Cash flows from investing activities:
Purchases of property and equipment	(136)	(2,302)
Net cash used in investing activities	(136)	(2,302)
Cash flows from financing activities:
Proceeds from sale of common stock and pre-funded warrants	100,495
Payment of deferred offering expenses	(4,246)	(241)
Proceeds from exercise of stock options	8	604
Net cash provided by financing activities	96,257	363
Net increase (decrease) in cash, cash equivalents and restricted cash	64,900	(16,462)
Cash, cash equivalents and restricted cash, beginning of period	46,076	74,922
Cash, cash equivalents and restricted cash, end of period	110,976	58,460
Supplemental disclosure of non-cash financing and investing activities:
Other assets included in accrued expenses	$ 249
Property and equipment purchases included in accounts payable		1,049
Deferred offering costs included in accounts payable and accrued expense		$ 4