Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Cash flows from operating activities:
Net loss	$ (28,323)	$ (25,604)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation expense	29	3
Stock-based compensation expense	2,398	2,504
Accretion of debt discount on available-for-sale securities	(2)	(139)
Changes in operating assets and liabilities:
Prepaid expenses and other assets	249	(699)
Accounts payable	3,735	4,137
Accrued liabilities	1,178	61
Net cash used in operating activities	(20,736)	(19,737)
Cash flows from investing activities:
Purchase of property and equipment	(6)	(71)
Proceeds from redemptions of short-term investments		10,099
Purchase of short-term investments		(9,965)
Net cash (used in) provided by investing activities	(6)	63
Cash flows from financing activities:
Proceeds from issuance of common stock, net of issuance costs		24,792
Proceeds from issuance of common stock under ESPP	14	15
Taxes paid related to net share settlement of equity awards	(33)	(48)
Settlement of fractional shares paid in cash	(1)
Net cash (used in) provided by financing activities	(20)	24,759
Net (decrease) increase in cash and cash equivalents	(20,762)	5,085
Cash and cash equivalents — beginning of period	37,125	41,100
Cash and cash equivalents — end of period	$ 16,363	46,185
Supplemental disclosure of non-cash investing and financing activities
Unpaid issuance costs		64
Purchase of fixed assets recorded in accounts payable		$ 30