CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Operating activities
Net loss	$ (22,940)	$ (17,743)
Adjustments to reconcile net loss to net cash used in operating activities:
Stock-based compensation expense	2,934	3,095
Depreciation and amortization	301	220
Accretion on marketable securities	323	145
Interest on finance lease	92	5
Non-cash lease expense	587
Amortization of financing lease right-of-use assets	353
Realized gain on marketable securities	(15)
Loss on fixed asset disposition		28
Changes in operating assets and liabilities:
Prepaid expenses	(2,936)	(1,740)
Other assets	74	86
Accounts payable and accrued liabilities	(33)	(1,148)
Compensation and employee benefits	(735)	180
Operating lease liabilities	(546)
Other liabilities	(16)	58
Net cash used in operating activities	(22,649)	(16,814)
Investing activities
Purchases of property and equipment	(71)	(1,103)
Purchases of short-term investments	(43,269)	(147,145)
Sales of short-term investments	7,864
Maturities of short-term investments	60,865
Net cash provided by (used in) investing activities	25,389	(148,248)
Financing activities
Principle payments from financing leases	(289)	(21)
Proceeds from the exercise of common stock options	238	1
Employee stock purchase plan expense	51
Proceeds from issuance of common stock upon initial public offering, net of issuance costs		140,594
Net cash provided by financing activities		164,065
Net increase (decrease) in cash and cash equivalents	2,740	(997)
Cash and cash equivalents at beginning of period	7,159	16,596
Cash and cash equivalents at end of period	9,899	15,599
Supplemental disclosure of noncash financing information:
Property and equipment additions included in accounts payable and accrued liabilities		56
Deferred offering costs included in accounts payable and accrued liabilities		534
Interest on financing		5
Initial measurement of operating lease right-of-use assets	6,558
Initial measurement of operating lease liabilities	5,580
Initial measurement of finance lease right-of-use assets	$ 453
Series BB Convertible Preferred Stock
Financing activities
Proceeds on the issuance of convertible preferred stock		23,491
Conversion of Series AA and BB Convertible Preferred Stock into Common Stock
Supplemental disclosure of noncash financing information:
Conversion of stock		$ 95,826