Cover Page Document Type Document Type Entity Registrant Name Entity Registrant Name Entity Filer Category Entity Filer Category Entity Small Business Entity Small Business Entity Emerging Growth Company Entity Emerging Growth Company Entity Central Index Key Entity Central Index Key Amendment Flag Amendment Flag Statement of Financial Position [Abstract] Assets [Abstract] Assets Assets, Current [Abstract] Current assets: Cash and Cash Equivalent Cash and cash equivalents Prepaid Expense and Other Assets, Current Prepaid expenses and other assets Prepaid expenses and other assets Assets, Current Total current assets Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, after Accumulated Depreciation and Amortization Property and equipment, net Property and equipment, net Operating Lease, Right-of-Use Asset Right of use assets - operating leases Deferred Financing Costs, Noncurrent Deferred Financing Costs, Noncurrent Deferred financing costs Assets Total assets Liabilities and Equity [Abstract] Liabilities and Stockholders' Deficit Liabilities and Stockholders' (Deficit) Equity Liabilities, Current [Abstract] Current liabilities: Accounts Payable, Current Accounts payable Accrued Liabilities, Current Accrued expenses Total accrued expenses Deferred Revenue, Current Deferred revenue Operating Lease, Liability, Current Operating lease liabilities Finance Lease, Liability, Current Finance lease liabilities Other Liabilities, Current Other current liabilities Liabilities, Current Total current liabilities Deferred Revenue, Noncurrent Deferred revenue Operating Lease, Liability, Noncurrent Operating lease liabilities Finance Lease, Liability, Noncurrent Finance lease liabilities Other Liabilities, Noncurrent Other long-term liabilities Liabilities Total liabilities Commitments and Contingencies Commitments and contingencies (Note 6) Commitments and contingencies (Note 8) Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Stockholders' deficit: Stockholders' (deficit) equity: Preferred Stock, Value, Issued Preferred stock $0.001 par value, 5,000,000 shares authorized, none issued or outstanding Common Stock, Value, Issued Common stock $0.001 par value, 350,000,000 shares authorized, 41,788,096 and 41,750,109 shares issued and outstanding at June 30, 2025 and December 31, 2024, respectively Common stock $0.001 par value, 350,000,000 shares authorized, 41,750,109 and 40,609,915 shares issued and outstanding at December 31, 2024 and 2023, respectively Additional Paid in Capital Additional paid-in capital Retained Earnings (Accumulated Deficit) Accumulated deficit Accumulated deficit Equity, Including Portion Attributable to Noncontrolling Interest Ending balance Beginning balance Total stockholders' deficit Liabilities and Equity Total liabilities and stockholders' deficit Preferred Stock, Par or Stated Value Per Share Preferred stock, par value (in USD per share) Preferred Stock, Shares Authorized Preferred stock, shares authorized (in shares) Preferred Stock, Shares Issued Preferred stock, shares issued (in shares) Preferred Stock, Shares Outstanding Preferred stock, shares outstanding (in shares) Common Stock, Par or Stated Value Per Share Common stock, par value (in USD per share) Common Stock, Shares Authorized Common stock, shares authorized (in shares) Common Stock, Shares, Issued Ending balance (in shares) Beginning balance (in shares) Common stock, shares issued (in shares) Common Stock, Shares, Outstanding Common stock, shares outstanding (in shares) Entity common stock, shares outstanding immediately after merger (in shares) Statement of Comprehensive Income [Abstract] Revenue from Collaborative Arrangement, Excluding Revenue from Contract with Customer Collaboration revenues Operating Expenses [Abstract] Operating expenses: Research and Development Expense Research and development General and Administrative Expense General and administrative Operating Expenses Total operating expenses Operating Income (Loss) Operating loss Embedded Derivative, Gain (Loss) on Embedded Derivative, Net Change in fair value of derivative liability Change in fair value of derivative liability Interest Income (Expense), Nonoperating Interest income, net Net Income (Loss) Attributable to Parent Net loss Net loss Net loss Earnings Per Share [Abstract] Share information: Earnings Per Share, Basic Net loss per share of common stock, basic (in USD per share) Earnings Per Share, Diluted Net loss per share of common stock, diluted (in USD per share) Weighted Average Number of Shares Outstanding, Basic Weighted-average shares of common stock outstanding, basic (in shares) Weighted Average Number of Shares Outstanding, Diluted Weighted-average shares of common stock outstanding, diluted (in shares) Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest [Abstract] Comprehensive loss Other Comprehensive Income (Loss), Available-for-Sale Securities Adjustment, Net of Tax, Portion Attributable to Parent Unrealized gain on marketable securities Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent Reclassification to net loss of previous unrealized gain on marketable securities Less: reclassification to net loss of previous unrealized gain on marketable securities Comprehensive Income (Loss), Net of Tax, Attributable to Parent Comprehensive loss Statement of Stockholders' Equity [Abstract] Statement [Table] Statement [Table] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Common Stock [Member] Common stock Additional Paid-in Capital [Member] Additional paid-in capital AOCI Attributable to Parent [Member] Accumulated other comprehensive loss Retained Earnings [Member] Accumulated deficit Noncontrolling Interest [Member] Noncontrolling interests Statement [Line Items] Statement Increase (Decrease) in Temporary Equity [Roll Forward] Convertible preferred stock Temporary Equity, Shares Issued Ending balance (in shares) Beginning balance (in shares) Temporary Equity, Including Noncontrolling Interest Ending balance Beginning balance Number of stock classified as temporary equity reclassified or converted to permanent equity during the period. Reclassifications of Temporary to Permanent Equity, Shares Conversion of convertible preferred stock and non-controlling interests to common stock (in shares) Reclassifications of Temporary to Permanent Equity Conversion of convertible preferred stock and non-controlling interests to common stock Increase (Decrease) in Stockholders' Equity [Roll Forward] Stockholders' (Deficit) Equity Shares, Issued Ending balance (in shares) Beginning balance (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period Exercised (in shares) Exercise of stock options (in shares) Stock Issued During Period, Value, Stock Options Exercised Exercise of stock options APIC, Share-Based Payment Arrangement, Increase for Cost Recognition Stock-based compensation OCI, Debt Securities, Available-for-Sale, Gain (Loss), before Adjustment, after Tax Unrealized gain on marketable securities Number of shares of stock issued during the period pursuant to pre-closing financing. Stock Issued During Period, Shares, Pre-closing, Financing Transaction Issuance of common stock for cash in pre-closing financing (in shares) Value of stock issued pursuant to preclosing financing during the period. Stock Issued During Period, Values, Pre-closing Financing Transaction Issuance of common stock for cash in pre-closing financing Stock Issued During Period, Shares, Conversion of Convertible Securities Issuance of common stock upon settlement of convertible promissory note, accrued interest, and related derivative liability (in shares) Stock Issued During Period, Value, Conversion of Convertible Securities Issuance of common stock upon settlement of convertible promissory note, accrued interest, and related derivative liability Stock Issued During Period, Shares, Acquisitions Issuance of common stock to Sesen Bio shareholders in reverse capitalization (in shares) Stock Issued During Period, Value, Acquisitions Issuance of common stock to Sesen Bio shareholders in reverse capitalization Value of stock issued during the period upon the conversion of convertible preferred stock and noncontrolling interests upon merger. Stock Issued During Period, Value, Conversion of Convertible Preferred Stock and Non-controlling Interests Upon Merger Conversion of convertible preferred stock and non-controlling interests to common stock (in shares) Number of stock issued during the period upon the conversion of convertible preferred stock and noncontrolling interests upon merger. Stock Issued During Period, Shares, Conversion of Convertible Preferred Stock and Non-controlling Interests Upon Merger Conversion of convertible preferred stock and non-controlling interests to common stock Stock Issued During Period, Shares, New Issues Sale of common stock under Open Market Sales Agreement, net of issuance costs (in shares) Sale of common stock under Open Market Sale Agreement, net of issuance costs (in shares) Stock Issued During Period, Value, New Issues Sale of common stock under Open Market Sale Agreement, net of issuance costs Sale of common stock under Open Market Sales Agreement, net of issuance costs Statement of Cash Flows [Abstract] Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Cash flows from operating activities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract] Adjustment to reconcile net loss to net cash used in operating activities: Depreciation, Depletion and Amortization, Nonproduction Depreciation and amortization expense Gain (Loss) on Disposition of Property Plant Equipment Loss on disposal of property and equipment Gain (loss) on sale of property and equipment Share-Based Payment Arrangement, Noncash Expense Stock-based compensation expense Operating Lease, Right-of-Use Asset, Periodic Reduction Reduction in the operating right of use assets Amortization of Debt Discount (Premium) Amortization of debt discount Amount of accretion on marketable securities. Accretion on Marketable Securities Accretion on marketable securities Write-off of Property and Equipment Write-off of Property and Equipment Write-off of property and equipment Marketable Security, Realized Gain (Loss) Realized gain on marketable securities Amount of expense (income) related to the increase (decrease) in interest expenses. Noncash Interest Expense Non-cash interest expense Gain (Loss) on Sale of Equipment Gain (Loss) on Sale of Equipment Loss on sale of equipment Sale and Leaseback Transaction, Gain (Loss), Net Gain on sale of sale-leaseback Loss on failed sale and leaseback Gain on sale of sale-leaseback Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract] Changes in operating assets and liabilities: Increase (Decrease) in Prepaid Expense and Other Assets Prepaid expenses and other assets Increase (Decrease) in Accounts Payable Accounts payable Increase (Decrease) in Accrued Liabilities Accrued expenses Increase (Decrease) in Deferred Revenue Deferred revenue Increase (Decrease) in Operating Lease Liability Operating lease liabilities Increase (Decrease) in Other Noncurrent Liabilities Other long term liabilities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Net cash used in operating activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract] Cash flows from investing activities: Payments to Acquire Marketable Securities Purchase of marketable securities The net cash paid (received) associated with the acquisition or disposal of all investments, including marketable securities and other assets. Payments for (Proceeds from) Marketable Securities Proceeds from the sale of marketable securities Payments to Acquire Property, Plant, and Equipment Purchases of property and equipment Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Net cash provided by (used in) investing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Cash flows from financing activities: Amount of cash, cash equivalents and restricted cash acquired associated with the reverse capitalization during the period . Cash, Cash Equivalents and Restricted Cash Acquired in Reverse Recapitalization, Financing Activities Cash, cash equivalents and restricted cash acquired in connection with the reverse recapitalization Amount of cash outflow for payment of reverse recapitalization finance costs. Payment of Finance Costs, Reverse Recapitalization, Financing Activities Payment of reverse recapitalization finance costs Proceeds from Issuance of Common Stock, Pre-Closing Financing Proceeds from Issuance of Common Stock, Pre-Closing Financing Proceeds from the issuance of common stock in pre-closing financing Finance Lease, Principal Payments Payment of principal related to finance lease liabilities Amount of cash inflow received by a seller-lessee in a failed sale-leaseback recognized in financing activities. Proceeds from Failed Sale Leaseback Transaction Proceeds from failed sale-leaseback arrangement Amount of cash outflow in a failed sale-leaseback recognized in financing activities. Payment of Finance Liability, Failed Sale Leaseback Transaction Payment of finance liability from failed sale-leaseback arrangements Payments of Financing Costs Payment of deferred financing costs Proceeds from Stock Options Exercised Proceeds from the exercise of stock options Proceeds from Issuance of Common Stock Sale of common stock under Open Market Sale Agreement, net of issuance costs Sale of common stock under Open Market Sales Agreement, net of issuance costs Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Net cash (used in) provided by financing activities Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Excluding Exchange Rate Effect, Including Discontinued Operation Net decrease in cash, cash equivalents and restricted cash Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Cash, cash equivalents and restricted cash at end of the period Cash, cash equivalents, and restricted cash at beginning of the year Supplemental Cash Flow Information [Abstract] Supplemental disclosures of cash flow information: Interest Paid, Excluding Capitalized Interest, Operating Activity Cash paid for interest Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Supplemental disclosure of non-cash financing and investing activities: The amount of equity that an Entity assumes in acquiring a business or in consideration for an asset received in a noncash (or part noncash) acquisition. Noncash or Part Noncash Acquisition, Equity Assumed Conversion of convertible preferred stock and non-controlling interests upon Merger Notes Reduction Conversion of convertible promissory note, accrued interest and derivative liability upon Merger Amount of unrealized gain (loss) on marketable securities in a noncash (or part noncash) transaction. Noncash or Part Noncash, Unrealized Gain (Loss) on Marketable Securities Unrealized gain on marketable securities Noncash or Part Noncash Transaction, Reclassification of Debt Finance Costs Noncash or Part Noncash Transaction, Reclassification of Debt Finance Costs Reclassification of deferred financing costs to additional paid-in capital Reclassification of deferred financing costs to additional paid-in-capital Amount of increase in right-of-use asset obtained in exchange for finance lease liability. Right-of-Use Asset Obtained in Exchange for Finance Leases Liability Right-of-use assets obtained in exchange for new financing lease liabilities Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Right-of-use assets obtained in exchange for new operating lease liabilities Non-Cash Effect of Modification of Operating Lease Right-of-Use Assets Operating Lease Liabilities Non-Cash Effect of Modification of Operating Lease Right-of-Use Assets Operating Lease Liabilities Modification of operating lease right-of-use asset and operating lease liabilities Disposal Of Property, Plant And Equipment In Exchange For Reduction Of Capital Lease Liability Disposal Of Property, Plant And Equipment In Exchange For Reduction Of Capital Lease Liability Disposal of property and equipment in exchange for reduction in financing lease liability Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Background No definition available. Development-Stage Risks and Liquidity Development-Stage Risks and Liquidity Development-Stage Risks and Liquidity [Text Block] Development-Stage Risks and Liquidity Accounting Policies [Abstract] Significant Accounting Policies [Text Block] Summary of Significant Accounting Policies Business Combination, Asset Acquisition, and Joint Venture Formation [Abstract] Business Combination [Text Block] Merger with Sesen Bio Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract] Other Assets Disclosure [Text Block] Prepaid Expenses and other assets Prepaid Expenses and Other Assets Property, Plant and Equipment [Abstract] Property, Plant and Equipment Disclosure [Text Block] Property and Equipment, net Payables and Accruals [Abstract] Accounts Payable and Accrued Liabilities Disclosure [Text Block] Accrued Expenses Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Text Block] Commitments and Contingencies Stockholders' Equity Note [Abstract] Equity [Text Block] Stockholders' Equity Stockholders' (Deficit) Equity Share-Based Payment Arrangement [Abstract] Share-Based Payment Arrangement [Text Block] Stock-based Compensation Income Tax Disclosure [Abstract] Income Tax Disclosure [Text Block] Income Taxes Related Party Transactions [Abstract] Related Party Transactions Disclosure [Text Block] Related-Party Transactions Revenue from Contract with Customer [Abstract] Revenue from Contract with Customer [Text Block] Moderna Collaboration and License Agreement Subsequent Events [Abstract] Subsequent Events [Text Block] Subsequent Events Basis of Accounting, Policy [Policy Text Block] Interim Financial Statements Basis of Presentation and Principles of Consolidation Use of Estimates, Policy [Policy Text Block] Use of Estimates Fair Value of Financial Instruments, Policy [Policy Text Block] Fair Value of Financial Instruments Fair Value Measurement, Policy [Policy Text Block] Fair Value Measurements Revenue from Contract with Customer [Policy Text Block] Revenue Recognition Concentration Risk, Credit Risk, Policy [Policy Text Block] Concentration of Credit Risk Concentration of credit risk Segment Reporting, Policy [Policy Text Block] Segment Information Segment information Cash and Cash Equivalents, Policy [Policy Text Block] Cash and Cash Equivalents Property, Plant and Equipment, Policy [Policy Text Block] Property and Equipment Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block] Long-lived Assets Deferred Financing Costs, Policy Deferred Financing Costs, Policy [Policy Text Block] Deferred Financing Costs Lessee, Leases [Policy Text Block] Leases Research and Development Expense, Policy [Policy Text Block] Research and Development Costs Share-Based Payment Arrangement [Policy Text Block] Stock-Based Compensation Income Tax, Policy [Policy Text Block] Income taxes Earnings Per Share, Policy [Policy Text Block] Net Loss Per Share Net loss per share New Accounting Pronouncements, Policy [Policy Text Block] Recently Issued Accounting Pronouncements Recently adopted accounting pronouncements and Recently issued but not yet adopted accounting pronouncements Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Schedule of Fair Value Hierarchy of Assets Measured on Recurring Basis Schedule of Segment Reporting Information, by Segment [Table Text Block] Schedule of Significant Expense Categories by Segment Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] Schedule of Dilutive Securities