Condensed Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Cash flows from operating activities:
Net loss	$ (36,896)	$ (24,711)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	422	755
Amortization of right-of-use asset	209
Share-based compensation	5,332	3,448
Deferred rent		4
Forgiveness of PPP Loan		(500)
Changes in operating assets and liabilities:
Prepaid expenses and other assets	5,071	(4,281)
Accounts payable	(677)	1,780
Accrued expenses and other current liabilities	(1,922)	5,279
Other long-term liabilities	(229)
Net cash used in operating activities	(28,690)	(18,226)
Cash flows from investing activities:
Purchases of property and equipment	(248)	(79)
Net cash used in investing activities	(248)	(79)
Cash flows from financing activities:
Proceeds from exercise of stock options	32	99
Proceeds from exercise of common stock warrants		1,338
Proceeds from sale of common stock and common stock warrants		27,225
Payment of issuance costs related to the sale of common stock and common stock warrants		(559)
Payment of equipment loan payable		(113)
Payment of offering costs		(222)
Net cash provided by financing activities	32	27,768
Net (decrease) increase in cash and cash equivalents and restricted cash	(28,906)	9,463
Cash and cash equivalents and restricted cash at beginning of year	49,329	39,866
Cash and cash equivalents and restricted cash at end of year	20,423	49,329
Supplemental disclosures of cash flow information:
Cash paid for interest		14
Supplemental disclosures of non-cash investing and financing activities:
Operating lease right-of-use asset and lease liability recorded upon adoption of ASC 842	$ 492
Offering costs included in accounts payable		$ 110