CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents	$ 97,661	$ 25,617
Short-term investments	9,986	0
Prepaid expenses and other current assets	3,973	3,099
Total current assets	111,620	28,716
Equity method investment	3,275	0
Property and equipment, net	1,553	1,782
Right-of-use asset, operating leases	6,016	6,301
Restricted cash and restricted cash equivalents	647	5,647
Other noncurrent assets	1,096	4,611
Total assets	124,207	47,057
Current liabilities:
Accounts payable	2,484	3,468
Accrued expenses and other current liabilities	11,020	9,763
CVR liability	3,690	0
Venture debt, current portion	0	878
Total current liabilities	17,194	14,109
Lease liability, net of current portion	5,948	6,248
Venture debt, net of current portion	12,554	4,581
Convertible notes	0	38,595
Other noncurrent liabilities	55,000	55,000
Total liabilities	90,696	118,533
Commitments and contingencies (Note 10)
Temporary equity, convertible preferred stock	0	111,445
Stockholders' deficit:
Common stock, $0.0001 par value; 400,000,000 shares authorized, 11,995,206 and 359,569 shares issued and outstanding at June 30, 2024 and December 31, 2023, respectively	2	1
Additional paid-in capital	236,540	4,159
Accumulated other comprehensive loss	(1)	0
Accumulated deficit	(203,030)	(187,081)
Total stockholders' equity (deficit)	33,511	(182,921)
Total liabilities, convertible preferred stock and stockholders' deficit	124,207	47,057
Series A convertible preferred stock [Member]
Current liabilities:
Temporary equity, convertible preferred stock	0	47,458
Series A-1 convertible preferred stock [Member]
Current liabilities:
Temporary equity, convertible preferred stock	0	4,132
Series B convertible preferred stock [Member]
Current liabilities:
Temporary equity, convertible preferred stock	$ 0	$ 59,855