Financial assets, at fair value
Financial assets, at fair value
Statistical Measurement [Domain]
Statistical Measurement [Domain]
Weighted average cost of capital, measurement input
Weighted average cost of capital, measurement input [member]
Disclosure of geographical areas [line items]
Disclosure of geographical areas [line items]
Borrowings
Non-current portion of other non-current borrowings
Borrowings, Exit Fee Amount
Borrowings, Exit Fee Amount
Borrowings, Exit Fee Amount
Employee-related receivables
Current Receivables for Employee Benefits
Current Receivables for Employee Benefits
Acquisitions of property, plant and equipment
Purchase of property, plant and equipment, classified as investing activities
Sub-contracting, studies and research
Sub-Contracting, Studies And Research Expenses
Sub-Contracting, Studies And Research Expenses
Assets Acquisitions [Axis]
Assets Acquisitions [Axis]
Assets Acquisitions
Day-one gain on recognition of financial liabilities
Gains Arising From Recognition Of Financial Liabilities
Gains Arising From Recognition Of Financial Liabilities
Number of shares waived (in shares)
Number Of Shares Waived
Number Of Shares Waived
TRANSLATION RESERVE
Reserve of exchange differences on translation [member]
Entity File Number
Entity File Number
Liabilities arising from financing activities [axis]
Liabilities arising from financing activities [axis]
Total non-current other receivables and assets
Non-Current Other Receivables And Assets
Non-Current Other Receivables And Assets
Impairment loss recognised in profit or loss, other intangible assets
Impairment loss recognised in profit or loss, intangible assets other than goodwill
Other financial assets
Total other non-current financial assets
Other non-current financial assets
Other financial income
Other finance income
Disclosure of reconciliation of intangible assets
Disclosure of detailed information about intangible assets [text block]
Repayments of non-convertible bond loans
Repayments Of Non-Convertible Loans Notes
Repayments Of Non-Convertible Loans Notes
Total operating expenses
Operating expenses
Operating expense
Trade payables and other current liabilities
Trade Payables And Other Current Liabilities [Member]
Trade Payables And Other Current Liabilities
Appropriation of prior period net loss
Increase (decrease) through appropriation of retained earnings, equity
Classes of share capital [axis]
Classes of share capital [axis]
Assets Acquisitions [Domain]
Assets Acquisitions [Domain]
Assets Acquisitions [Domain]
Social taxes related to AGAs
Expense From Equity-Settled Share-Based Payment Transactions, Social Taxes
Expense From Equity-Settled Share-Based Payment Transactions, Social Taxes
Cash and cash equivalents [abstract]
Disclosure of reconciliation of liabilities arising from financing activities
Disclosure of reconciliation of liabilities arising from financing activities [text block]
Total shareholders’ equity
Equity at beginning of period
Equity at end of period
Equity
Equity
Kreos/Claret Minimal Return Indemnifications
Kreos & Claret Minimum Return Indemnifications [Member]
Kreos & Claret Minimum Return Indemnifications
Financial gain (loss)
Finance income (cost)
Disclosure of detailed information about borrowings [table]
Disclosure of detailed information about borrowings [table]
Number of instruments exercised (in shares)
Number of instruments exercised (in shares)
Number of instruments vested (in shares)
Number of other equity instruments exercised or vested in share-based payment arrangement
Statement of comprehensive income [abstract]
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]
Disclosure Of Fair Value Measurement Of Assets And Liabilities
Statement of changes in equity [line items]
Statement of changes in equity [line items]
Other receivables and assets
Other assets
Reasonably possible change in risk variable, percent
Sensitivity Analysis For Types Of Market Risk, Reasonably Possible Change In Risk Variable, Percent
Sensitivity Analysis For Types Of Market Risk, Reasonably Possible Change In Risk Variable, Percent
Types of contracts [domain]
Types of contracts [domain]
Corporate information and statement of IFRS compliance [abstract]
Disclosure of detailed information about property, plant and equipment [line items]
Disclosure of detailed information about property, plant and equipment [line items]
Net loss for the period
Retained earnings, profit (loss) for reporting period
SALES AND MARKETING
Sales And Marketing Expense [Member]
Sales And Marketing Expense
Revaluation of cash equivalents measured at fair value
Revaluation Of Cash Equivalents Measured At Fair Value
Revaluation Of Cash Equivalents Measured At Fair Value
Number of instruments lapsed (in shares)
Number of other equity instruments expired in share-based payment arrangement
Increase (decrease) in carrying value due to reasonably possible increase in unobservable input liabilities
Increase (Decrease) In Carrying Value Due To Reasonably Possible Increase In Unobservable Input Liabilities
Increase (Decrease) In Carrying Value Due To Reasonably Possible Increase In Unobservable Input Liabilities
STRIKE PRICE PER SHARE (in euro per share)
Equity Instrument Strike Price, Other Equity Instruments Granted
Equity Instrument Strike Price, Other Equity Instruments Granted
Disclosure of geographical areas [table]
Disclosure of geographical areas [table]
Discount rate, measurement input
Discount rate, measurement input [member]
Contribution to Group's liabilities, percentage
Contribution To Group's Liabilities, Percentage
Contribution To Group's Liabilities, Percentage
Peak penetration
Peak Penetration, Measurement Input [Member]
Peak Penetration, Measurement Input
ASSETS AT FAIR VALUE THROUGH PROFIT AND LOSS
Financial assets at fair value through profit or loss, category [member]
Depreciation expense, lease
Depreciation Expense, Lease
Depreciation Expense, Lease
Statement of financial position [abstract]
Sales and marketing
Sales and marketing expense
Changes in provisions
Adjustments for provisions
Cover [Abstract]
Borrowings
Borrowings [Member]
Borrowings
Maximum
Maximum [Member]
Repayments of conditional advances
Proceeds From Conditional Advances
Proceeds From Conditional Advances
Unused reversals
Unused reversals
Unused provision reversed, other provisions
Other
Other adjustments for non-cash items
Lease facilities
Lease Facilities [Member]
Lease Facilities
Total current liabilities
Current liabilities
Employees [Abstract]
Employees [Abstract]
Classes of intangible assets other than goodwill [axis]
Classes of intangible assets other than goodwill [axis]
AGA-2025-1
AGA-2025-1 [Member]
AGA-2025-1
Kreos & Claret convertible notes (OCABSA)
Kreos/Claret BSA
Kreos & Claret Financing, Tranche A [Member]
Kreos & Claret Financing, Tranche A
Trade and other receivables [abstract]
Expenses by nature [abstract]
Deferred tax assets
Deferred tax assets
Decrease in deposits
Proceeds From Reimbursements Of Deposits
Proceeds From Reimbursements Of Deposits
Premiums related to share capital
Share premium
Cash flows provided by (used in) financing activities
Cash flows from (used in) financing activities [abstract]
Social security and other
Current payables on social security and taxes other than income tax
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Classes of liabilities [domain]
Classes of liabilities [domain]
Cash and cash equivalents
Cash And Cash Equivalents [Member]
Cash And Cash Equivalents
Expense on lease liabilities
Expense On Lease Liabilities
Expense On Lease Liabilities
Disclosure of quantitative information about right-of-use assets [line items]
Disclosure of quantitative information about right-of-use assets [line items]
Operating expenses
Disclosure of other operating expense [text block]
Disclosure Of Financial Gain (Loss) [Line Items]
Disclosure Of Financial Gain (Loss) [Line Items]
Disclosure Of Financial Gain (Loss) [Line Items]
Total comprehensive income (loss) for the period
Comprehensive income
PGE
Prêt Garanti Par l'Etat (PGE) [Member]
Prêt Garanti Par l'Etat (PGE)
Sale Of Stock [Domain]
Sale Of Stock [Domain]
Sale Of Stock [Domain]
Statement of changes in equity [abstract]
Measurement [domain]
Measurement [domain]
Research tax credit ("CIR")
Income From Research Tax Credit
Income From Research Tax Credit
Interest paid
Decrease Through Interest Paid, Liabilities Arising From Financing Activities
Decrease Through Interest Paid, Liabilities Arising From Financing Activities
Basis of preparation
Disclosure of basis of preparation of financial statements [text block]
Disclosure Of Employee Workforce [Line Items]
Disclosure Of Employee Workforce [Line Items]
Disclosure Of Employee Workforce [Line Items]
Royalty certificate, maximum amount
Royalty Certificate, Maximum Amount
Royalty Certificate, Maximum Amount
RESEARCH AND DEVELOPMENT EXPENSES
Research And Development Expenses [Member]
Research And Development Expenses
Disclosure of detailed information about financial instruments [line items]
Disclosure of detailed information about financial instruments [line items]
Document Fiscal Period Focus
Document Fiscal Period Focus
Significant unobservable input, assets
Significant unobservable input, assets
BUILDINGS
Buildings
Buildings [member]
TOTAL ASSETS
Financial assets
Assets
Assets
Number of instruments issued (in shares)
NUMBER OF BSAs (in shares)
Number of other equity instruments granted in share-based payment arrangement
Royalty expense
Royalty expense
Types of risks [domain]
Types of risks [domain]
Decrease / (increase) in other receivables and related accounts
Adjustments for decrease (increase) in trade and other receivables
Number of instruments outstanding, beginning balance (in shares)
Number of instruments outstanding, ending balance (in shares)
Number of other equity instruments outstanding in share-based payment arrangement
Agreement [Domain]
Agreement [Domain]
Agreement [Domain]
FAIR VALUE OF THE UNDERLYING SHARE (in euro per share)
Underlying Share Fair Value, Other Equity Instruments Granted
Underlying Share Fair Value, Other Equity Instruments Granted
Geographical [Domain]
Geographical [Domain]
Disclosure of breakdown of operating income
Disclosure Of Detailed Information Of Operating Income Explanatory [Table Text Block]
Disclosure Of Detailed Information Of Operating Income Explanatory
Entity Address, City or Town
Entity Address, City or Town
SHARE CAPITAL
Issued capital
Issued capital [member]
Geographical areas [axis]
Geographical areas [axis]
Employees
Disclosure of information about employees [text block]
Classes of other provisions [domain]
Classes of other provisions [domain]
Liabilities arising from financing activities at beginning of period
Liabilities arising from financing activities at end of period
Liabilities arising from financing activities
Disclosure of quantitative information about right-of-use assets [table]
Disclosure of quantitative information about right-of-use assets [table]
Number of warrants repurchased (in shares)
Number Of Warrants Repurchased
Number Of Warrants Repurchased
CIR Tax Year [Axis]
CIR Tax Year [Axis]
CIR Tax Year
Notice accounts
Other cash and cash equivalents
FURNITURE AND COMPUTER EQUIPMENT
Furniture And Computer Equipment [Member]
Furniture And Computer Equipment
Number of ordinary shares issued (in shares)
Increase in number of shares issued (in shares)
Increase (decrease) in number of ordinary shares issued
Advances related to CRO contracts
Non-Current Advances To CRO Contracts
Non-Current Advances To CRO Contracts
Intangible assets
Intangible assets other than goodwill
Intangible assets other than goodwill
Increase (decrease) in employer tax and social contributions
Increase (Decrease) In Employer Tax And Social Contributions
Increase (Decrease) In Employer Tax And Social Contributions
Advances related to CRO contracts
Current Advances To CRO Contracts
Current Advances To CRO Contracts
The Group
Disclosure of general information about financial statements [text block]
Cash and cash equivalents
Cash and cash equivalents at the beginning of the year
Cash and cash equivalents at the end of the year
Cash and cash equivalents
Cash and cash equivalents
Other receivables and assets
Other non-current non-financial assets
EQUIPMENT
Machinery [member]
Royalty certificates
Royalty Certificates Related Temporary Differences [Member]
Royalty Certificates Related Temporary Differences
Disclosure of maturity analysis for derivative financial liabilities [table]
Disclosure of maturity analysis for derivative financial liabilities [table]
Depositary service fees
Income From Depositary Service Fees
Income From Depositary Service Fees
Prepaid expenses
Current prepaid expenses
Translation reserve
Reserve of exchange differences on translation
Disclosure of non-adjusting events after reporting period [line items]
Disclosure of non-adjusting events after reporting period [line items]
ASSETS
Assets [abstract]
ROU
Right-of-use assets [member]
Credit spread, measurement input
Credit spread, measurement input [member]
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY
Equity and liabilities
United States
UNITED STATES
Property, plant and equipment [abstract]
Retained earnings
Retained earnings, excluding profit (loss) for reporting period
Registered direct offering
Registered Direct Offering [Member]
Registered Direct Offering
Current assets
Current assets [abstract]
Board member
Board Member [Member]
Board Member
Other
Other current payables
Entity Address, Postal Zip Code
Entity Address, Postal Zip Code
Revenue [abstract]
Non-current assets
Non-current assets [abstract]
Kreos A & B BSA
Kreos A & B BSA [Member]
Kreos A & B BSA
Financial liabilities-current portion
Current Financial Liabilities [Member]
Current Financial Liabilities
Acquisition
Additions other than through business combinations, property, plant and equipment including right-of-use assets
General and administrative
General and administrative expense
Income tax
Disclosure of income tax [text block]
Tax and employee-related payables
TAX AND EMPLOYEE-RELATED PAYABLES
Current Tax And Employee Benefit Liabilities
Current Tax And Employee Benefit Liabilities
Disclosure of defined benefit plans [abstract]
Disclosure of defined benefit plans [abstract]
Disclosure of attribution of expenses by nature to their function [table]
Disclosure of attribution of expenses by nature to their function [table]
Decrease in fair value
(Increase) / decrease in derivatives fair value
Gains on change in fair value of derivatives
Disclosure of other receivables and other assets
Disclosure Of Detailed Information About Other Receivables And Other Assets [Table Text Block]
Disclosure Of Detailed Information About Other Receivables And Other Assets
Disclosure of remaining contractual maturities of non-derivative financial liabilities
Disclosure of maturity analysis for non-derivative financial liabilities [text block]
Heights convertible notes
Heights Convertible Notes [Member]
Heights Convertible Notes
Par value per share (in euro per share)
Share Price
Share Price
Interest paid
Interest paid, classified as financing activities
Expense relating to short-term leases
Expense Relating To Short-Term Leases And Low Value Assets For Which Recognition Exemption Has Been Used
Expense Relating To Short-Term Leases And Low Value Assets For Which Recognition Exemption Has Been Used
Payments for advances made to contract research organizations, undiscounted Amount
Payments For Advances Made To Contract Research Organizations, Undiscounted Amount
Payments For Advances Made To Contract Research Organizations, Undiscounted Amount
Interest on royalty certificates
Interest Expense On Royalty Certificates
Interest Expense On Royalty Certificates
Employee-related payables
Short-term employee benefits accruals
Non cash changes : Effect of the change in foreign currency exchange rates
Increase (decrease) through effect of changes in foreign exchange rates, liabilities arising from financing activities
Foreign exchange loss
Foreign exchange loss
SOFTWARE
Computer software [member]
AGAs
Total AGAs
Free Share Warrants (AGA) [Member]
Free Share Warrants (AGA)
United States of America, Dollars
United States of America, Dollars
Financial assets and liabilities
Disclosure of fair value of financial instruments [text block]
Cash
Cash
Related party transactions [abstract]
Related party transactions [abstract]
FAIR VALUE OF THE BSA ( in euro per share)
FAIR VALUE OF THE AGA (in euro per share)
Equity Instrument Fair Value, Other Equity Instruments Granted
Equity Instrument Fair Value, Other Equity Instruments Granted
Categories of financial liabilities [domain]
Categories of financial liabilities [domain]
LONGER THAN 5 YEARS
Later than five years [member]
Cash flows provided by (used in) investing activities
Cash flows from (used in) investing activities [abstract]
Increase (decrease) in carrying value resulting from a reasonably possible decrease in unobservable input liabilities
Increase (Decrease) In Carrying Value Due To Reasonably Possible Decrease In Unobservable Input Liabilities
Increase (Decrease) In Carrying Value Due To Reasonably Possible Decrease In Unobservable Input Liabilities
Related parties
Disclosure of related party [text block]
Intangible assets
Disclosure of intangible assets [text block]
Borrowings, Discount Rate
Borrowings, Discount Rate
Borrowings, Discount Rate
Statement of compliance
Statement of IFRS compliance [text block]
VAT receivables
Current value added tax receivables
Disposal
Disposals, property, plant and equipment including right-of-use assets
Interest expense on lease liabilities
Interest on lease liabilities
Interest expense on lease liabilities
Shares based compensation expense
Increase (decrease) through share-based payment transactions, equity
Reconciliation of number of shares outstanding [abstract]
Reconciliation of number of shares outstanding [abstract]
Decrease
Decrease In Lease Liabilities
Decrease In Lease Liabilities
Number of free shares plans issued
Number Of Free Shares Plans Issued
Number Of Free Shares Plans Issued
Disclosure of classes of share capital [table]
Disclosure of classes of share capital [table]
Unobservable inputs [axis]
Unobservable inputs [axis]
Use of judgments and estimates
Disclosure Of Accounting Policy For Accounting Judgements And Estimates Explanatory [Policy Text Block]
Disclosure Of Accounting Policy For Accounting Judgements And Estimates Explanatory
Foreign currency translation differences
Other comprehensive income, net of tax, exchange differences on translation of foreign operations
Total non-current assets
Non-current assets
Reconciliation of changes in other provisions [abstract]
Reconciliation of changes in other provisions [abstract]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Financial Agreement [Domain]
Financial Agreement [Domain]
Financial Agreement [Domain]
Classes of property, plant and equipment [axis]
Classes of property, plant and equipment [axis]
Exercise of warrants
Proceeds from exercise of warrants
Contribution to Group's net profits (losses), percentage
Contribution To Group's Net Profits (Losses), Percentage
Contribution To Group's Net Profits (Losses), Percentage
Classes of property, plant and equipment [domain]
Classes of property, plant and equipment [domain]
Cash-generating units [axis]
Cash-generating units [axis]
Disclosure Of Other Receivables And Other Assets [Table]
Disclosure Of Other Receivables And Other Assets [Table]
Disclosure Of Other Receivables And Other Assets [Table]
Entity Address, Country
Entity Address, Country
Other receivables and assets
Disclosure of trade and other receivables [text block]
Reconciliation of changes in intangible assets other than goodwill [abstract]
Reconciliation of changes in intangible assets other than goodwill [abstract]
Other financial assets
Total other current financial assets
Other current financial assets
Exercises of share warrants (in shares)
Increase (Decrease) In Number Of Shares Issued Through Exercise Of Share Warrants
Increase (Decrease) In Number Of Shares Issued Through Exercise Of Share Warrants
Wittycel SAS
Wittycel SAS - ABX196 [Member]
Wittycel SAS - ABX196
Effect of movements in exchange rates on cash held
Effect of movements in exchange rates on cash held
Effect of exchange rate changes on cash and cash equivalents
Interest received
Interest received, classified as investing activities
Cash flows provided by (used in) operating activities
Cash flows from (used in) operating activities
Foreign exchange gains (losses) on translation of foreign operations
Foreign Exchange Gains (Losses) On Translation Of Foreign Operations
Foreign Exchange Gains (Losses) On Translation Of Foreign Operations
Disclosure of terms and conditions of share-based payment arrangement [line items]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Non-current liabilities
Non-current liabilities [abstract]
Kreos & Claret financing
Kreos & Claret Financing [Member]
Kreos & Claret Financing
Share-based payments
Disclosure of share-based payment arrangements [text block]
Disclosure of detailed information about financial instruments [table]
Disclosure of detailed information about financial instruments [table]
Intellectual property fees
Intellectual Property Fees
Intellectual Property Fees
Geographical areas [domain]
Geographical areas [domain]
Royalty certificates
Royalty Certificates [Member]
Royalty Certificates
Document Period End Date
Document Fiscal Year Focus
Adjustments for:
Adjustments to reconcile profit (loss) [abstract]
Management and assessment of financial risks
Disclosure of financial risk management [text block]
Borrowings, number of tranches
Borrowings, Number Of Tranches
Borrowings, Number Of Tranches
Discount rate
Unobservable Input, Liabilities, Discount Rate
Unobservable Input, Liabilities, Discount Rate
AGA EMPLOYER CONTRIBUTIONS AND TAXES
AGA Employer Contributions And Taxes [Member]
AGA Employer Contributions And Taxes
Favorable change in exchange rate, impact on foreign exchange gain
Sensitivity Analysis For Types Of Market Risk, 10% Favorable Change in Exchange Rate, Impact On Foreign Exchange Gain (Loss)
Sensitivity Analysis For Types Of Market Risk, 10% Favorable Change in Exchange Rate, Impact On Foreign Exchange Gain (Loss)
Receivables due from related parties
Receivables due from related parties
Increase (decrease) in financial liabilities at fair value due to reasonably possible increase in unobservable input
Increase (decrease) in fair value measurement due to reasonably possible increase in unobservable input, liabilities
Disclosure of attribution of expenses by nature to their function [line items]
Disclosure of attribution of expenses by nature to their function [line items]
Current financial liabilities
Current financial liabilities
Financial expenses
Financial expenses
Finance costs
VOLATILITY
Expected Volatility, Other Equity Instruments Granted
Expected Volatility, Other Equity Instruments Granted
Disclosure of other financial assets
Disclosure of financial assets [text block]
Current and deferred tax expenses
Adjustments for income tax expense
Other receivables and assets
Other Receivables And Assets [Member]
Other Receivables And Assets
Other operating income
Total operating income
Other income
Classes of other provisions [axis]
Classes of other provisions [axis]
Disclosure of credit risk exposure [table]
Disclosure of credit risk exposure [table]
Accounting principles
Disclosure of material accounting policy information [text block]
Foreign exchange gains
Foreign exchange gain
Trade payables
Current trade payables
Adverse change in exchange rate, impact on foreign exchange loss
Sensitivity Analysis For Types Of Market Risk, 10% Adverse Change in Exchange Rate, Impact On Foreign Exchange Gain (Loss)
Sensitivity Analysis For Types Of Market Risk, 10% Adverse Change in Exchange Rate, Impact On Foreign Exchange Gain (Loss)
Warrants [Domain]
Warrants [Domain]
Warrants
Entity Central Index Key
Entity Central Index Key
Items that are or may be reclassified subsequently to profit or loss
Other comprehensive income that will be reclassified to profit or loss, net of tax
Cash and cash equivalents
Disclosure of cash and cash equivalents [text block]
Other financial expense
Other finance cost
Derivative financial liabilities at beginning of period
Derivative financial liabilities at end of period
Derivative financial liabilities
Prepaid expenses
Non-Current Prepaid Expenses
Non-Current Prepaid Expenses
Disclosure of credit risk exposure [line items]
Disclosure of credit risk exposure [line items]
Consulting and professional fees
Professional fees expense
Valuation techniques used in fair value measurement [axis]
Valuation techniques used in fair value measurement [axis]
Contribution to Group's assets, percentage
Contribution To Group's Assets, Percentage
Contribution To Group's Assets, Percentage
Ordinary shares
Ordinary shares [member]
POS
Probability Of Success, Measurement Input [Member]
Probability Of Success, Measurement Input
Increase in deposits
Cash Payments For Deposits
Cash Payments For Deposits
Interest on convertible loan notes
Interest expense on debt instruments issued
Loss per share
Disclosure of earnings per share [text block]
GROSS VALUES
Gross carrying amount [member]
Disclosure of average workforce during the periods
Disclosure Of Average Number Of Employees [Table Text Block]
Disclosure Of Average Number Of Employees
Trade payables and other current liabilities
Trade payables and other current liabilities
Trade and other current payables
LIABILITIES AND SHAREHOLDERS' EQUITY
Equity and liabilities [abstract]
Warrants [Axis]
Warrants [Axis]
Warrants
Foreign exchange losses
Foreign Exchange Losses
Foreign Exchange Losses1
Proceeds from government grants
Proceeds from government grants, classified as financing activities
Accrued invoices
Accruals classified as current
Reconciliation of changes in property, plant and equipment [abstract]
Reconciliation of changes in property, plant and equipment [abstract]
Discounted cash flow
Discounted cash flow [member]
Capital increases
Proceeds from issuing shares
FROM 2 TO 5 YEARS
Later than two years and not later than five years [member]
LESS THAN 1 YEAR
Not later than one year [member]
Prosynergia
Prosynergia [Member]
Prosynergia
Warrants subscription
Proceeds From Warrants Subscription
Proceeds From Warrants Subscription
Operating loss
Profit (loss) from operating activities
Royalty certificates, undiscounted cash flows
Royalty Certificates, Undiscounted Cash Flows
Royalty Certificates, Undiscounted Cash Flows
LIABILITIES AT FAIR VALUE THROUGH PROFIT AND LOSS
Financial liabilities at fair value through profit or loss, category [member]
Financial liabilities-non current portion
Non-Current Financial Liabilities [Member]
Non-Current Financial Liabilities
Long-term advances made to CROs
Non-Current Advances To CRO Contracts [Member]
Non-Current Advances To CRO Contracts
Percentage of reasonably possible decrease in unobservable input, liabilities
Percentage of reasonably possible decrease in unobservable input, liabilities
Entity Address, Address Line One
Entity Address, Address Line One
Disclosure of financial assets [line items]
Disclosure of financial assets [line items]
Property, plant and equipment
Property, plant and equipment [member]
Deferred tax liabilities
Net deferred tax liabilities
Net deferred tax liabilities
Proceeds from borrowings
Proceeds from borrowings, classified as financing activities
Payments of the lease liabilities
Payments of lease liabilities, classified as financing activities
Fair Value Measurement [Abstract]
Fair Value Measurement [Abstract]
Non-cash changes: other fair value remeasurement
Increase (decrease) through changes in fair values, liabilities arising from financing activities
Effect of unwinding the discount related to advances
Adjustments For Unwinding Of Discount Related To Conditional Advances
Adjustments For Unwinding Of Discount Related To Conditional Advances
Retirement benefit obligations
Adjustments for increase (decrease) in employee benefit liabilities
Increase in fair value
(Increase) / decrease in derivatives fair value
Losses on change in fair value of derivatives
Other receivables and assets
Current Receivables And Assets
Current Receivables And Assets
Conditional advances Bpifrance
Banque Publique d’Investissement (BPI) [Member]
Banque Publique d’Investissement (BPI)
Disclosure of breakdown of the compensation expenses
Explanation of effect of share-based payments on entity's profit or loss [text block]
Share-Based Payment Arrangements [Abstract]
Share-Based Payment Arrangements [Abstract]
Share-Based Payment Arrangements [Abstract]
Entity Registrant Name
Entity Registrant Name
Basic loss per share (in euro per share)
Basic earnings (loss) per share
Change in deferred income and other liabilities
Adjustments For Increase (Decrease) In Provisions, Deferred Income And Other Liabilities
Adjustments For Increase (Decrease) In Provisions, Deferred Income And Other Liabilities
Measurement [axis]
Measurement [axis]
Statement of cash flows [abstract]
Weighted average number of outstanding shares used for computing diluted loss per share (in shares)
Weighted average number of outstanding shares, diluted loss per share (in shares)
Weighted average number of ordinary shares used in calculating diluted earnings per share
Disclosure of financial assets [table]
Disclosure of financial assets [table]
Maximum number of shares to be issued if all conditions are met (in shares)
Maximum Number Of Other Equity Instruments To Be Issued In Share-Based Payment Arrangement If All Conditions Are Met
Maximum Number Of Other Equity Instruments To Be Issued In Share-Based Payment Arrangement If All Conditions Are Met
Title and Position [Domain]
Title and Position [Domain]
Number of instruments exercisable (in shares)
Number of other equity instruments exercisable in share-based payment arrangement
Decrease in financial assets at fair value
Increase (decrease) in fair value measurement due to reasonably possible increase in unobservable input, assets
Intangible assets other than goodwill [member]
Classes of intangible assets other than goodwill [domain]
Counterparty Name [Domain]
Counterparty Name [Domain]
Share-based compensation expenses
Adjustments for share-based payments
Current liabilities
Current liabilities [abstract]
Other financial assets
Other Financial Assets [Member]
Other Financial Assets
Retirement benefit obligations
Disclosure of employee benefits [text block]
Deposits
Long-term deposits
Increase / (decrease) in other liabilities (assets) at fair value through profit and loss
Gains On Financial Liabilities At Fair Value Through Profit Or Loss
Gains On Financial Liabilities At Fair Value Through Profit Or Loss
Borrowings, fixed conversion price (euro per share)
Borrowings, Fixed Conversion Price
Borrowings, Fixed Conversion Price
Proceeds from research tax credit
Proceeds From Research Tax Credit
Proceeds From Research Tax Credit
All Currencies [Domain]
All Currencies [Domain]
Shareholders’ equity
Equity [abstract]
Other tax and related payments
Current Payables On Other Tax And Related Payments
Current Payables On Other Tax And Related Payments
Disclosure of operating segments [abstract]
Disclosure of carrying amounts and fair value of financial assets
Disclosure of fair value measurement of assets [text block]
Subclassifications of assets, liabilities and equities [abstract]
Tranches [Axis]
Tranches [Axis]
Tranches
Repurchase of royalty certificates agreement, equity consideration
Repurchase Of Royalty Certificates Agreement, Equity Consideration [Member]
Repurchase Of Royalty Certificates Agreement, Equity Consideration
Classes of share capital [domain]
Classes of share capital [domain]
Financial income
Adjustments For Other Finance Income
Adjustments For Other Finance Income
Kreos C BSA
Kreos C BSA [Member]
Kreos C BSA
Proceeds from issue of ordinary shares
Proceeds from issue of ordinary shares
Financial income
Financial income
Finance income
Classes of financial liabilities [axis]
Classes of financial liabilities [axis]
Classes of financial liabilities [domain]
Classes of financial liabilities [domain]
Interest expenses and other financial expenses
Adjustments For Other Finance Costs
Adjustments For Other Finance Costs
AGA-2026-3
AGA-2026-3 [Member]
AGA-2026-3
Disclosure of other provisions [line items]
Disclosure of other provisions [line items]
Disclosure of other provisions
Disclosure of other provisions [text block]
Issue of free shares (in shares)
Number Of Free Shares Issued
Number Of Free Shares Issued
Disclosure of temporary difference, unused tax losses and unused tax credits [table]
Disclosure of temporary difference, unused tax losses and unused tax credits [table]
Average number of employees
Average number of employees
Increases
Increase in existing provisions, other provisions
Number of treasury shares held (in shares)
Number Of Treasury Shares Held
Number Of Treasury Shares Held
Sale Of Stock [Axis]
Sale Of Stock [Axis]
Sale Of Stock
Lease liabilities at beginning of period
Lease liabilities at end of period
Lease liabilities
Lease liabilities
Disclosure of financial assets [abstract]
Types of contracts [axis]
Types of contracts [axis]
Non-cash changes: interest expense and other
Increase (decrease) through other changes, liabilities arising from financing activities
Advances reimbursed by / (made to) CROs
Payments For Advances Reimbursed (Made to) Contract Research Organizations
Payments For Advances Reimbursed (Made to) Contract Research Organizations
PREMIUMS RELATED TO SHARE CAPITAL
Share premium [member]
Lease liability, percentage of total
Lease Liability, Percentage Of Total
Lease Liability, Percentage Of Total
Disount rate applied to long-term advances
Discount Rate Applied To Long-Term Advances
Discount Rate Applied To Long-Term Advances
Off-Balance Sheet Commitments [Abstract]
Off-Balance Sheet Commitments
Royalty certificates
Non-Current Royalty Certificates
Non-Current Royalty Certificates
Minimum
Minimum [Member]
Liabilities arising from financing activities [domain]
Liabilities arising from financing activities [domain]
Disclosure of reconciliation of other equity instruments
Disclosure of number and weighted average exercise prices of other equity instruments [text block]
Financial liabilities
Liabilities
Liabilities
Share capital
Issued capital
Disclosure of reconciliation of liabilities arising from financing activities [line items]
Disclosure of reconciliation of liabilities arising from financing activities [line items]
Categories of financial assets [axis]
Categories of financial assets [axis]
Disclosure of remaining contractual maturities of derivative financial liabilities
Disclosure of maturity analysis for derivative financial liabilities [text block]
Agreement [Axis]
Agreement [Axis]
Agreement
Repurchase of royalty certificates agreement
Repurchase Of Royalty Certificates Agreement [Member]
Repurchase Of Royalty Certificates Agreement
Title and Position [Axis]
Title and Position [Axis]
Borrowings, maximum borrowing capacity per tranche
Borrowings, Maximum Borrowing Capacity Per Tranche
Borrowings, Maximum Borrowing Capacity Per Tranche
CIR Tax Year [Domain]
CIR Tax Year [Domain]
CIR Tax Year [Domain]
Number of shares outstanding (in shares)
Number of shares outstanding
BSAs
Total BSAs
Share Subscription Warrants (BSA) [Member]
Share Subscription Warrants (BSA)
Number of operating segments
Number Of Operating Segments
Number Of Operating Segments
Interest-free vendor loan, royalty certificates
Interest Free Vendor Loan, Royalty Certificates
Interest Free Vendor Loan, Royalty Certificates
Issue of share warrants
Increase (Decrease) Through Issuance of Warrants, Equity
Increase (Decrease) Through Issuance of Warrants, Equity
Other provisions at beginning of period
Other provisions at end of period
Other provisions
Other financial assets
Disclosure of other assets [text block]
Increase / (decrease) in trade payables
Adjustments for increase (decrease) in trade accounts payable
Total financial liabilities
Financial liabilities
Interest on bond loans
Interest expense on bonds
Repayments of convertible loan notes
Repayments Of Convertible Loans Notes
Repayments Of Convertible Loans Notes
Income tax
Tax expense (income)
Lease liabilities
Lease liabilities [member]
Repurchase of royalty certificates agreement, cash consideration
Repurchase Of Royalty Certificates Agreement, Cash Consideration [Member]
Repurchase Of Royalty Certificates Agreement, Cash Consideration
Cash-generating units [domain]
Cash-generating units [domain]
SUBSCRIPTION PRICE (in euro per share)
Equity Instrument Price, Other Equity Instruments Granted
Equity Instrument Price, Other Equity Instruments Granted
Significant events for the year ended December 31, 2025 and the three-month period ended March 31, 2026 and subsequent events
Disclosure Of Significant Events For The Period Reported And Events After Reporting Period [Text Block]
Disclosure Of Significant Events For The Period Reported And Events After Reporting Period
Disclosure of variation in lease liabilities
Disclosure Of Leases For Lessee [Table Text Block]
Disclosure Of Leases For Lessee
Cash flows provided by (used in) operating activities
Cash flows from (used in) operating activities [abstract]
Off-balance sheet commitments received and contingent assets
Disclosure of other provisions, contingent liabilities and contingent assets [text block]
Settlement agreement (Protocole d’accord transactionnel)
Settlement Agreement (Protocole D’accord Transactionnel) [Member]
Settlement Agreement (Protocole D’accord Transactionnel)
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Table]
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Table]
Disclosure Of Fair Value Measurement Of Assets And Liabilities
Non-cash changes: (gain)/loss on recognition or derecognition
Increase (Decrease) Through Gain (Loss) On Recognition/Derecognition, Liabilities Arising From Financing Activities
Increase (Decrease) Through Gain (Loss) On Recognition/Derecognition, Liabilities Arising From Financing Activities
Property, plant and equipment
Property, plant and equipment including right-of-use assets at beginning of period
Property, plant and equipment including right-of-use assets at end of period
Property, plant and equipment including right-of-use assets
Financial liabilities, at fair value
Financial liabilities, at fair value
Current Fiscal Year End Date
Document Period End Date
Borrowings, Deposit
Borrowings, Deposit
Borrowings, Deposit
Share-based compensation expense
Expense from equity-settled share-based payment transactions
Current tax expense (income)
Current tax expense (income)
Non-adjusting events after reporting period [axis]
Non-adjusting events after reporting period [axis]
Non-adjusting events after reporting period [domain]
Non-adjusting events after reporting period [domain]
Disclosure of classes of share capital [line items]
Disclosure of classes of share capital [line items]
Valuation techniques used in fair value measurement [domain]
Valuation techniques used in fair value measurement [domain]
Goodwill and impairment test
Disclosure of goodwill [text block]
Effect of unwinding the discount related to advances made to CROs
Unwinding Effect Of Discount Related To Advances Made To CROs
Unwinding Effect Of Discount Related To Advances Made To CROs
Maturity [axis]
Maturity [axis]
Other
Other inflows (outflows) of cash, classified as financing activities
Top of range
Top of range [member]
Intangible assets and goodwill [abstract]
Research and development
Research and development expense
Scenario [Axis]
Scenario [Axis]
Goodwill
Goodwill
Other financial liabilities
Other Financial Liabilities [Member]
Other Financial Liabilities
Increase / (decrease) in tax and social security liabilities
Adjustments For Increase (Decrease) In Tax And Social Security Liabilities
Adjustments For Increase (Decrease) In Tax And Social Security Liabilities
Actuarial gains and losses on retirement benefit obligations
Other comprehensive income, net of tax, gains (losses) on remeasurements of defined benefit plans
Document Type
Document Type
Expense from share-based payment transactions with employees
Expense from share-based payment transactions with employees
Purchase price of royalty certificates
Royalty Certificates, Repurchase Total Consideration
Royalty Certificates, Repurchase Total Consideration
Gross lease liabilities
Gross lease liabilities
Royalty certificate, percentage of future sales
Royalty Certificate, Percentage Of Future Sales
Royalty Certificate, Percentage Of Future Sales
Other sales and marketing expenses
Other research and development expenses
Other general and administrative expenses
Miscellaneous other operating expense
Financial Agreement [Axis]
Financial Agreement [Axis]
Financial Agreement
Items that will not be reclassified to profit or loss
Other comprehensive income that will not be reclassified to profit or loss, net of tax
Disclosure Of Cash And Cash Equivalents [Line Items]
Disclosure Of Cash And Cash Equivalents [Line Items]
Disclosure Of Cash And Cash Equivalents [Line Items]
Accounting Principles [Abstract]
Accounting Principles [Abstract]
Accounting Principles [Abstract]
Profit or loss [abstract]
Statistical Measurement [Axis]
Statistical Measurement [Axis]
Disclosure of financial liabilities [abstract]
Disclosure of financial liabilities [abstract]
Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis]
Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis]
Technology- based intangible assets, assets acquisitions
Technology- Based Intangible Assets, Assets Acquisitions
Technology- Based Intangible Assets, Assets Acquisitions
Conversion of convertible instruments (in shares)
Increase (Decrease) In Number Of Shares Issued Through Conversion Of Convertible Instruments
Increase (Decrease) In Number Of Shares Issued Through Conversion Of Convertible Instruments
Net proceeds from issuance of ordinary shares
Net Proceeds From Issue Of Ordinary Shares
Net Proceeds From Issue Of Ordinary Shares
Classes of assets [axis]
Classes of assets [axis]
Borrowings by name [domain]
Borrowings by name [domain]
Disclosure of changes in derivative instruments
Disclosure Of Changes In Derivative Financial Instruments [Table Text Block]
Disclosure Of Changes In Derivative Financial Instruments
Types of share-based payment arrangements [domain]
Types of share-based payment arrangements [domain]
Currency risk
Currency risk [member]
Vesting period
Vesting Requirements For Share-Based Payment Arrangement, Vesting Period
Vesting Requirements For Share-Based Payment Arrangement, Vesting Period
France
FRANCE
Earnings per share [abstract]
Range [axis]
Range [axis]
Components of equity [axis]
Components of equity [axis]
Disclosure of financial liabilities breakdown
Disclosure of financial liabilities [text block]
Deferred tax liabilities
Deferred tax liabilities
Geographical [Axis]
Geographical [Axis]
Net loss before tax
Profit (loss) before tax
Property, plant and equipment including right-of-use assets [axis]
Property, plant and equipment including right-of-use assets [axis]
Income taxes paid
Income taxes paid (refund), classified as operating activities
Other comprehensive income (loss)
Other comprehensive income (loss)
Other comprehensive income
Classes of liabilities [axis]
Classes of liabilities [axis]
Fair value of other equity instruments
Aggregate Fair Value, Other Equity Instruments Outstanding
Aggregate Fair Value, Other Equity Instruments Outstanding
Disclosure Of Cash And Cash Equivalents [Table]
Disclosure Of Cash And Cash Equivalents [Table]
Disclosure Of Cash And Cash Equivalents [Table]
Provisions
Current
Other current provisions
Types of share-based payment arrangements [axis]
Types of share-based payment arrangements [axis]
Amortization of intangibles and depreciation of property, plant and equipment
Adjustments for depreciation and amortisation expense
Shareholders’ equity
Disclosure of share capital, reserves and other equity interest [text block]
Forecast
Forecast [Member]
Interest expense on borrowings
Interest on PGE
Interest expense on borrowings
Disclosure Of Other Receivables And Other Assets [Line Items]
Disclosure Of Other Receivables And Other Assets [Line Items]
Disclosure Of Other Receivables And Other Assets [Line Items]
Operating income
Disclosure of other operating income [text block]
Disclosure Of Lease Liabilities [Line Items]
Disclosure Of Lease Liabilities [Line Items]
Disclosure Of Lease Liabilities [Line Items]
Disclosure of carrying amounts and fair value of financial liabilities
Disclosure of fair value measurement of liabilities [text block]
Proceeds
Increase Through Proceeds, Liabilities Arising From Financing Activities
Increase Through Proceeds, Liabilities Arising From Financing Activities
Disclosure of other provisions [table]
Disclosure of other provisions [table]
Provisions
Non-current
Other non-current provisions
Percentage of reasonably possible increase in unobservable input, liabilities
Percentage of reasonably possible increase in unobservable input, liabilities
AGA-2026-1
AGA-2026-1 [Member]
AGA-2026-1
Net gain on sale of treasury shares
Adjustments For Net Gain On Sale Of Treasury Shares
Adjustments For Net Gain On Sale Of Treasury Shares
Effect of the change in foreign currency exchange rates
Increase (decrease) through net exchange differences, property, plant and equipment including right-of-use assets
ADS
American Depository Shares [Member]
American Depository Shares
Attribution of expenses by nature to their function [domain]
Attribution of expenses by nature to their function [domain]
Increase
Increase In Lease Liabilities
Increase In Lease Liabilities
Free Shares (AGA)
AGAs
AGAs
Free Shares (AGA) [Member]
Free Shares (AGA)
Increase
Depreciation, property, plant and equipment including right-of-use assets
Property, plant and equipment including right-of-use assets [domain]
Property, plant and equipment including right-of-use assets [domain]
Repayments of borrowings, classified as financing activities
Repayments of borrowings, classified as financing activities
Weighted average number of outstanding shares used for computing basic loss per share (in shares)
Weighted average number of outstanding shares, basic loss per share (in shares)
Weighted average number of ordinary shares used in calculating basic earnings per share
Total current other receivables and assets
Current Other Receivables And Assets
Current Other Receivables And Assets
OTHER PROVISIONS
Miscellaneous other provisions [member]
Borrowings by name [axis]
Borrowings by name [axis]
Current advances to suppliers
Current advances to suppliers
Payables, other current liabilities and provisions
Disclosure Of Trade And Other Payables And Provisions Explanatory [Text Block]
Disclosure Of Trade And Other Payables And Provisions Explanatory
Disclosure of detailed information about intangible assets [table]
Disclosure of detailed information about intangible assets [table]
Tranche 2
Tranche Two [Member]
Tranche Two
Disclosure of breakdown of trade and other payables
Disclosure Of Breakdown Of Trade And Other Payables [Table Text Block]
Disclosure Of Breakdown Of Trade And Other Payables
Borrowings
Borrowings
Disclosure of expenses by nature
Disclosure of expenses by nature [text block]
Disclosure of tax and employee-related payables
Disclosure Of Tax And Employee-Related Payables Explanatory [Table Text Block]
Disclosure Of Tax And Employee-Related Payables Explanatory
NET LOSS FOR THE YEAR
Retained earnings, profit (loss) for reporting period [member]
Disclosure of commitments and contingent liabilities
Disclosure of commitments and contingent liabilities [text block]
Financial liabilities
Disclosure of financial instruments [text block]
Other financial assets
Other financial assets
Disclosure of reconciliation of property, plant and equipment
Disclosure of detailed information about property, plant and equipment [text block]
Exercises
Exercise Of Derivative Instruments
Exercise Of Derivative Instruments
LICENSES
Licences [member]
Cash flows provided by (used in) investing activities
Cash flows from (used in) investing activities
Increase (decrease) in cash and cash equivalents
Increase (decrease) in cash and cash equivalents after effect of exchange rate changes
Kreos A & B & C BSA
Kreos A & B & C BSA [Member]
Kreos A & B & C BSA
Research tax credit ("CIR")
Non-Current Research Tax Credit Receivables
Non-Current Research Tax Credit Receivables
Disclosure of detailed information about intangible assets [line items]
Disclosure of detailed information about intangible assets [line items]
Cash flows provided by (used in) financing activities
Cash flows from (used in) financing activities
Personnel costs
Employee benefits expense
Issue of equity, offering price per share (in dollar/euro per share)
Issue Of Equity, Offering Price Per Share
Issue Of Equity, Offering Price Per Share
Repurchases
Repurchase Of Derivative Instruments
Repurchase Of Derivative Instruments
Proceeds from issuing other equity instruments
Proceeds from issuing other equity instruments
PATENTS
Copyrights, patents and other industrial property rights, service and operating rights [member]
Number of shares lapsed (in shares)
Number Of Shares Lapsed
Number Of Shares Lapsed
Changes in working capital requirements
Increase (decrease) in working capital
Total current assets
Current assets
AMORTIZATION
Accumulated depreciation, amortisation and impairment [member]
AGA-2025
AGA-2025 [Member]
AGA-2025
Statement of changes in equity [table]
Statement of changes in equity [table]
RETAINED EARNINGS
Retained earnings, excluding profit (loss) for reporting period [member]
Number of shares with performance conditions waived (in shares)
Number Of Shares With Performance Conditions Waived
Number Of Shares With Performance Conditions Waived
Cash flows provided by (used in) operating activities before change in working capital requirements
Cash flows from (used in) operations before changes in working capital
AGA-2026-2
AGA-2026-2 [Member]
AGA-2026-2
Issue of free shares
Increase (Decrease) From Free Shares Issued
Increase (Decrease) From Free Shares Issued
Research tax credit ("CIR")
Current Research Tax Credit Receivables
Current Research Tax Credit Receivables
Types of risks [axis]
Types of risks [axis]
Cash and cash equivalents and other short-term investments
Cash And Cash Equivalents And Other Short-Term Investments
Cash And Cash Equivalents And Other Short-Term Investments
Disclosure of net financial income (loss)
Disclosure Of Detailed Information About Finance Income (Cost) [Table Text Block]
Disclosure Of Detailed Information About Finance Income (Cost)
Going concern
Description Of Accounting Policy For Going Concern [Policy Text Block]
Description Of Accounting Policy For Going Concern
Classes of assets [domain]
Classes of assets [domain]
Document Period End Date
Current Fiscal Year End Date
Repayment of PGE
Net Proceeds From Sale Of Royalty Certificates
Net Proceeds From Sale Of Royalty Certificates
Disclosure Of Lease Liabilities [Table]
Disclosure Of Lease Liabilities [Table]
Disclosure Of Lease Liabilities [Table]
Cash equivalents
Cash equivalents
2026, Tax Year
2026, Tax Year [Member]
2026, Tax Year
Disclosure Of Employee Workforce [Table]
Disclosure Of Employee Workforce [Table]
Disclosure Of Employee Workforce [Table]
Financial liabilities, undiscounted cash flows
Financial Liabilities, Undiscounted Cash Flows
Financial Liabilities, Undiscounted Cash Flows
Bottom of range
Bottom of range [member]
Tranche 3
Tranche Three [Member]
Tranche Three
Increase/(decrease) in derivatives and liabilities measured at fair value
Adjustments for fair value losses (gains)
RISK FREE RATE
Risk Free Interest Rate, Other Equity Instruments Granted
Risk Free Interest Rate, Other Equity Instruments Granted
GENERAL AND ADMINISTRATIVE EXPENSES
General And Administrative Expense [Member]
General And Administrative Expense
Attribution of expenses by nature to their function [axis]
Attribution of expenses by nature to their function [axis]
LIABILITIES AT AMORTIZED COST
Financial liabilities at amortised cost, category [member]
Disclosure of detailed information about borrowings [line items]
Disclosure of detailed information about borrowings [line items]
Income taxes paid (refund) [abstract]
Income taxes paid (refund) [abstract]
ASSETS AT AMORTIZED COST
Financial assets at amortised cost, category [member]
Par value per share (in euro per share)
Par value per share
Disclosure of non-adjusting events after reporting period [table]
Disclosure of non-adjusting events after reporting period [table]
Property, plant and equipment
Disclosure of property, plant and equipment [text block]
Repayments
Decrease Through Repayments, Liabilities Arising From Financing Activities
Decrease Through Repayments, Liabilities Arising From Financing Activities
Net loss for the period
Net loss for the period
Profit (loss)
Key Management Personnel Compensation, Contractual Severance Indemnity
Key Management Personnel Compensation, Contractual Severance Indemnity
Key Management Personnel Compensation, Contractual Severance Indemnity
Advances to CRO contracts, undiscounted amount
Non-Current Advances To CRO Contracts, Undiscounted Amount
Non-Current Advances To CRO Contracts, Undiscounted Amount
Amendment Flag
Amendment Flag
Components of equity [domain]
Components of equity [domain]
Total non-current liabilities
Non-current liabilities
Closing foreign exchange rate
Closing foreign exchange rate
Other investments
Other Current Investments
Other Current Investments
AGA-2025-5
AGA-2025-5 [Member]
AGA-2025-5
Number of shares issued at beginning of period (in shares)
Number of shares issued at end of period (in shares)
Number of shares issued (in shares)
Number of shares issued
Number of convertible notes converted
Number Of Convertible Notes Converted
Number Of Convertible Notes Converted
Segment information
Disclosure of entity's operating segments [text block]
Total operating income
Revenue and other operating income
Temporary difference, unused tax losses and unused tax credits [axis]
Temporary difference, unused tax losses and unused tax credits [axis]
Temporary difference, unused tax losses and unused tax credits [domain]
Temporary difference, unused tax losses and unused tax credits [domain]
Provisions used
Provision used, other provisions
Kreos & Claret bond loans
Kreos 1 & 2 Bond Loans [Member]
Kreos 1 & 2 Bond Loans
Range [domain]
Range [domain]
Key management personnel compensation, termination benefits
Key management personnel compensation, termination benefits
Capital commitments
Capital commitments
Tranches [Domain]
Tranches [Domain]
Tranches [Domain]
AGA-2025-2
AGA-2025-2 [Member]
AGA-2025-2
Trade and other current payables [abstract]
DEPRECIATION
Accumulated depreciation and amortisation [member]
Disclosure Of Financial Gain (Loss) [Table]
Disclosure Of Financial Gain (Loss) [Table]
Disclosure Of Financial Gain (Loss) [Table]
Financial gain (loss)
Disclosure of finance income (cost) [text block]
Increase (decrease) in financial liabilities at fair value due to reasonably possible decrease in unobservable input
Increase (decrease) in fair value measurement due to reasonably possible decrease in unobservable input, liabilities
Interest income
Interest income
Conversion of Kreos OCABSA and heights notes
Increase (decrease) through conversion of convertible instruments, equity
Disclosure of composition of cash and cash equivalents
Disclosure Of Composition Of Cash And Cash Equivalents [Table Text Block]
Disclosure Of Composition Of Cash And Cash Equivalents
FROM 1 TO 2 YEARS
Later than one year and not later than two years [member]
Recurring fair value measurement
Recurring fair value measurement [member]
EXPECTED MATURITY
Expected Maturity, Other Equity Instruments Granted
Expected Maturity, Other Equity Instruments Granted
Scenario [Domain]
Scenario [Domain]
Kreos/Claret Financing B And C
Kreos/Claret Financing B And C [Member]
Kreos/Claret Financing B And C
Financial liabilities—non-current portion
Non-current financial liabilities
Non-current financial liabilities
Total
Expense from share-based payment transactions
Exercises of share warrants and other share warrants
Increase (decrease) through exercise of warrants, equity
Increase (decrease) through exercise of warrants, equity
Cash payment for royalty certificates
Cash Payment For Royalty Certificates
Cash Payment For Royalty Certificates
Categories of financial assets [domain]
Categories of financial assets [domain]
Tranche 1
Tranche One [Member]
Tranche One
Carrying amount [member]
Carrying amount [member]
Percentage of reasonably possible increase in unobservable input, assets
Percentage of reasonably possible increase in unobservable input, assets
Financial Income (Loss) [Abstract]
Financial Income (Loss)
Notional amount
Notional amount
Unobservable inputs [domain]
Unobservable inputs [domain]
Changes in equity [abstract]
Changes in equity [abstract]
Financial Risk Management [Abstract]
Financial Risk Management [Abstract]
Borrowings
Other current borrowings and current portion of other non-current borrowings
Disclosure of main data and assumptions used for the measurement of other equity instruments
Disclosure of indirect measurement of fair value of goods or services received, other equity instruments granted during period [text block]
Currency [Axis]
Currency [Axis]
Diluted loss per share (in euro per share)
Diluted earnings (loss) per share
Maturity [domain]
Maturity [domain]
Retirement benefit obligations
Non-current provisions for employee benefits
Right-of-use assets
Right-of-use assets
Categories of financial liabilities [axis]
Categories of financial liabilities [axis]
Vesting percentage
Vesting Requirements For Share-Based Payment Arrangement, Vesting Percentage
Vesting Requirements For Share-Based Payment Arrangement, Vesting Percentage
Current prepaid expenses related to CRO
Current Prepaid Expenses Related To CRO
Current Prepaid Expenses Related To CRO
Disclosure of terms and conditions of share-based payment arrangement [table]
Disclosure of terms and conditions of share-based payment arrangement [table]
Kreos & Claret Financing, Tranche A,B and C
Kreos & Claret Financing, Tranche A,B and C [Member]
Kreos & Claret Financing, Tranche A,B and C
Disclosure of reconciliation of liabilities arising from financing activities [table]
Disclosure of reconciliation of liabilities arising from financing activities [table]
2025, Tax Year
2025, Tax Year [Member]
2025, Tax Year
At fair value
At fair value [member]
Increase / (decrease) in other liabilities / (assets) at fair value through profit and loss
Losses On Financial Liabilities At Fair Value Through Profit Or Loss
Losses On Financial Liabilities At Fair Value Through Profit Or Loss
Schedule of earnings per share
Earnings per share [text block]
BSA-2026-1
BSA-2026-1 [Member]
BSA-2026-1
Intangible assets other than goodwill [abstract]
Counterparty Name [Axis]
Counterparty Name [Axis]
Disclosure of detailed information about property, plant and equipment [table]
Disclosure of detailed information about property, plant and equipment [table]
Number of warrants granted (in shares)
Number Of Warrants Granted
Number Of Warrants Granted