Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2026	Dec. 31, 2025
Current assets:
Cash and cash equivalents	$ 24,155	$ 46,303
Prepaid expenses and other current assets	768	629
Prepaid research and development	252	830
Total current assets	25,175	47,762
Property and equipment, net		4,107
Right of use assets - operating leases		10,168
Other assets		244
Total assets	25,175	62,281
Current liabilities:
Accounts payable	902	1,113
Accrued expenses and other current liabilities	3,567	4,653
Non-refundable sublicense and transition services payments	16,250	13,750
Operating lease liabilities		3,567
Total current liabilities	20,719	23,083
Operating lease liabilities - noncurrent		20,443
Total liabilities	20,719	43,526
Commitments and contingencies (note 10)
Stockholders' equity:
Preferred stock, $0.0001 par value: 10,000,000 shares authorized; no shares issued and outstanding at both June 30, 2026 and December 31, 2025
Additional paid-in capital	724,593	723,512
Accumulated deficit	(720,137)	(704,757)
Total stockholders' equity	4,456	18,755
Total liabilities and stockholders' equity	$ 25,175	$ 62,281