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Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)
$ in Thousands
 9 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Cash flows from operating activities:    
Net loss $ (38,780) $ (15,515)
Adjustments to reconcile net loss to net cash used in operating activities:    
Depreciation and amortization 120 62
Stock-based compensation 1,110 1,077
Amortization of right-of-use asset 1,450 580
Gain on lease termination (1,576)
Accrued interest expense 441 113
Paid-in-kind interest expense 829
Amortization of debt discount and debt issuance costs 2,148 52
Loss on extinguishment of debt 22,440
Fair value adjustments to bridge notes derivative liability 1,038
Change in fair value of warrant liabilities (897) (166)
Change in fair value of contingent consideration liability (66) (118)
Commitment shares issued to Lincoln Park Capital, LLC 249
Loss on shares sold to Lincoln Park Capital, LLC 11
Non-cash component of acquisition of Exacis in-process research and development 433
Gain on disposal of fixed assets 1
Loss on non-controlling investment 59
Changes in operating assets and liabilities:    
Other receivables 238 (825)
Prepaid expenses and other current assets 1,225 340
Other non-current assets 1 (2,911)
Accounts payable and accrued expenses 758 1,099
Operating lease liability (1,656) 795
Due to related party (646) (1,313)
Deferred revenue (582) 599
Other liabilities 113 (369)
Net cash used in operating activities (12,291) (15,747)
Cash flows from investing activities:    
Purchase of property and equipment (369)
Proceeds received from the sale of fixed assets 4
Net cash used in investing activities (365)
Cash flows from financing activities:    
Proceeds received from convertible note financings 1,405 8,715
Fees paid related to convertible note financings (34) (175)
Proceeds received from bridge notes financings 3,887
Proceeds from sale of common stock pursuant to stock purchase agreement with Lincoln Park Capital Fund, LLC 320
Dividends paid to Series A preferred stockholders (8) (8)
Net cash provided by financing activities 5,250 8,852
Net decrease in cash and cash equivalents (7,406) (6,895)
Cash, cash equivalents and restricted cash at beginning of period 11,670 15,541
Total cash, cash equivalents and restricted cash at end of period 4,264 8,646
Cash paid during the period for:    
Interest 46 13
Income taxes 2 4
Supplemental disclosure of non-cash investing and financing activities:    
Note warrants issued 755
Unpaid fees incurred in connection with the December 2023 financing 32
Paid in-kind interest added to convertible notes principal 1,006
Adjustment to lease liability and ROU asset due to remeasurement 4,245
Reclassification of warrants to liability 11,244
Warrants issued in connection with July 2023 Financing 5,234
Unpaid fees incurred in connection with the July 2023 Financing 27
Initial measurement of ROU assets 34,410
Initial measurement of lease liability 34,170
Contingent consideration for Exacis asset acquisition 225
Issuance of common stock for Exacis asset acquisition 208
Reconciliation of cash, cash equivalents and restricted cash at end of period:    
Cash and cash equivalents 4,264 4,551
Restricted cash $ 4,095