CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED)	3 Months Ended	9 Months Ended
	Sep. 30, 2021 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)
Cash flows from operating activities:
Net loss		$ (22,238,000)	$ (11,900,000)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation	$ 9,000	239,000	24,000
Stock-based compensation expense		540,000	193,000
Non-cash lease expense		543,000	593,000
Net amortization of premiums and accretion of discounts on investments		(182,000)
License agreement paid for with common stock			349,000
Anti-dilution right assumed with license agreement			233,000
Change in fair value of preferred stock tranche rights			50,000
Change in fair value of anti-dilution right	(234,000)		(26,000)
Gain upon extinguishment of PPP loan			(58,000)
Changes in operating assets and liabilities:
Prepaid expenses and other current assets		(1,044,000)	(133,000)
Accounts payable		482,000	494,000
Accrued expenses and other liabilities		1,388,000	135,000
Operating lease liabilities		(491,000)	(309,000)
Net cash used in operating activities		(20,763,000)	(10,355,000)
Cash flows from investing activities:
Purchases of investments		(49,367,000)
Proceeds from sales and maturities of investments		4,673,000
Purchases of property and equipment		(1,915,000)	(101,000)
Net cash used in investing activities		(46,609,000)	(101,000)
Cash flows from financing activities:
Proceeds from issuance of Series A-1 preferred stock in second and third closings, net of issuance costs			12,467,000
Payments of deferred offering costs		(175,000)
Proceeds from exercise of stock options		24,000	1,000
Net cash (used in) provided by financing activities		(151,000)	12,468,000
Net (decrease) increase in cash, cash equivalents, and restricted cash		(67,523,000)	2,012,000
Cash, cash equivalents and restricted cash at beginning of period		99,991,000	1,990,000
Cash, cash equivalents and restricted cash at end of period	4,002,000	32,468,000	4,002,000
Supplemental disclosure of non-cash investing and financing activities:
Fair value of preferred stock tranche rights recognized as Series A-1 preferred stock upon issuance of milestone shares			368,000
Purchases of property and equipment included in accrued expenses		185,000
Supplemental cash flow information:
Right-of-use assets obtained in exchange for operating lease liability			6,201,000
Deferred offering costs in accounts payable and accrued expenses		1,369,000
Unrealized loss on available-for-sale investments, net of tax		133,000
Reconciliation of cash, cash equivalents, and restricted cash:
Cash and cash equivalents	3,614,000	32,080,000	3,614,000
Restricted cash	388,000	388,000	388,000
Total cash, cash equivalents, and restricted cash	$ 4,002,000	$ 32,468,000	$ 4,002,000