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Weighted Average [Member] Measurement Input Type [Axis] Counterparty Name [Domain] Income Statement [Abstract] us-gaap_SharesOutstanding Balance (in shares) Balance (in shares) Time-Based Stock Option Awards, RSUs, and Warrants [Member] Represents time-based stock option awards, rsu's, and warrants. RSUs conversion to common stock (in shares) RSUs conversion to common stock Segment Reporting [Text Block] Measurement Input, Expected Term [Member] gnpx_EquityIssuanceMaximumAmountAvailableForIssuance Equity Issuance, Maximum Amount, Available for Issuance Represent the maximum amount available for issuance related to the purchase agreement. Award Type [Axis] Net loss Net loss Adjustments to reconcile net loss to net cash used in operating activities: Measurement Input, Price Volatility [Member] Preferred stock $0.001 par value: 10,000,000 shares authorized; no shares issued and outstanding at March 31, 2026 and December 31, 2025 Plan Name [Axis] Segment Reporting, Reconciliation of Profit (Loss) by Segment to Consolidated [Table Text Block] us-gaap_Liabilities Total liabilities Plan Name [Domain] Defined Benefit Plan [Table] us-gaap_WarrantsAndRightsOutstandingTerm Warrants and Rights Outstanding, Term (Year) us-gaap_AllocatedShareBasedCompensationExpense Share-Based Payment Arrangement, Expense us-gaap_LiabilitiesAndStockholdersEquity Total liabilities and stockholders’ equity Operating expenses: Consolidation Items [Axis] Measurement Input, Share Price [Member] Title and Position [Axis] Measurement Input Type [Domain] Segment Reporting [Table] us-gaap_OtherCommitment Other Commitment Measurement Input, Risk Free Interest Rate [Member] us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets Prepaid expenses and other Derivative, measurement input us-gaap_ShareBasedCompensation Share-based compensation Subsequent Event [Member] us-gaap_CostsAndExpenses Costs and Expenses Total operating expenses Consolidation Items [Domain] us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAuthorized Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Additional Shares Authorized (in shares) Location, Statement of Income, Balance [Axis] Represents Usage of a Glucagon Promoter and Gene Therapy Technologies to Potentially Treat Type 1 and 2 Diabetes [Member] Related to agreement. Changes in operating assets and liabilities: Accounting Standards Update and Change in Accounting Principle [Table] Preferred stock, issued (in shares) Preferred stock, outstanding (in shares) Preferred Stock, Shares Outstanding (in shares) Warrants cancelled or expired, warrants (in shares) Warrants or Rights, Cancelled During Period (in shares) The number of warrants or rights cancelled during the period. Preferred stock, auhtorized (in shares) Preferred Stock, Shares Authorized (in shares) ELOC Derivative [Member] Represents the ELOC derivative liability. Portion at Fair Value Measurement [Member] gnpx_ClassOfWarrantOrRightIssuedInPeriod Class of Warrant or Right, Issued in Period (in shares) The number of warrants or rights issued during period. Reported Value Measurement [Member] Preferred stock, par value (in dollars per share) Preferred Stock, Par or Stated Value Per Share (in dollars per share) us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect Net increase in cash and cash equivalents Estimate of Fair Value Measurement [Member] New Accounting Pronouncements, Policy [Policy Text Block] us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations Cash and cash equivalents, beginning of period Cash and cash equivalents, end of period Antidilutive Securities, Name [Domain] Collaborative Arrangement and Arrangement Other than Collaborative [Axis] Measurement Basis [Axis] Statement [Table] Fair Value Hierarchy and NAV [Domain] Measurement Frequency [Domain] Statement of Financial Position [Abstract] Derivative liabilities Derivative Liability us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue Outstanding (in dollars per share) Outstanding (in dollars per share) Restricted stock units granted (in dollars per share) Issuance of common stock for services Stock Issued During Period, Value, Issued for Services gnpx_WarrantsOrRightsFairValuePerShare Warrants or Rights, Fair Value Per Share (in dollars per share) Per share fair value of warrants or rights. Non-current liabilities: Issuance of common stock for services (in shares) Stock Issued During Period, Shares, Issued for Services (in shares) us-gaap_PropertyPlantAndEquipmentUsefulLife Property, Plant and Equipment, Useful Life (Year) MD Anderson [Member] Represents MD Anderson. Research Agreement [Member] Represents the research agreement. Fair Value, Recurring [Member] Restricted stock units vested (in dollars per share) us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period (in shares) us-gaap_OtherAssetsNoncurrent Total other assets Share-Based Payment Arrangement, Option, Exercise Price Range [Table] Nonmonetary Transaction Type [Domain] gnpx_LongTermContractEstimatedCost Long Term Contract, Estimated Cost Estimated total cost of of long term contract. Nonmonetary Transaction Type [Axis] gnpx_RoyaltyOnSalesPercentage Royalty on Sales, Percentage Percentage of sales of royalty. National Institute of Health [Member] Represents the national institute of health (NIH). Document Type gnpx_ContingentPaymentsAnnualIncrease Contingent Payments Annual Increase Annual increase in contingent payment. gnpx_MinimumAnnualRoyaltyFixedAmountThirdYearAndThereafter Minimum Annual Royalty Fixed Amount, Third Year and Thereafter The fixed minimum annual amount related to the royalties. Issuance of common stock net of issuance costs (in shares) Represents the number of shares of common stock and warrants issued during the period. Document Information [Line Items] Document Quarterly Report us-gaap_DefinedContributionPlanCostRecognized Defined Contribution Plan, Cost gnpx_RoyaltyPaymentAnnualMinimum Royalty Payment, Annual Minimum Minimum of annual royalty payment. gnpx_CommercialSalesMilestoneAdditionalFdaRegulatoryApproval Commercial Sales Milestone, Additional FDA Regulatory Approval The additional amount from the commercial sales milestone payments through the FDA regulatory approval. gnpx_RoyaltyTerms Royalty Term (Year) Terms of the royalty agreement, as a percentage of net sales of licensed technologies . us-gaap_IncreaseDecreaseInOtherCurrentLiabilities Other current liabilities Document Information [Table] us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares) gnpx_MinimumAnnualRoyaltyFixedAmountFirstTwoYears Minimum Annual Royalty Fixed Amount, First Two Years The minimum fixed amount related to the annual royalties. Issuance of common stock net of issuance costs Represents the stock and warrants issued during the period for cash, net of issuance costs. us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares) University Of Michigan [Member] Represents the University of Michigan. us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares) Antidilutive Securities [Axis] The 2018 Equity Incentive Plan [Member] Represents information related to the 2018 equity incentive plan. Entity Interactive Data Current gnpx_ClassOfWarrantOrRightPurchasePercentage Class of Warrant or Right, Purchase Percentage Percentage of total value of the right to purchase a warrant. us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period (Year) us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number (in shares) Outstanding, number of shares (in shares) Outstanding, number of shares (in shares) Measurement Frequency [Axis] Document Transition Report us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price (in dollars per share) Outstanding, weighted average exercise price (in dollars per share) Outstanding, weighted average exercise price (in dollars per share) Commitments and Contingencies Disclosure [Text Block] Statement [Line Items] The 2018 Employee Stock Purchase Plan [Member] Represents information related to the 2018 employee stock purchase plan. gnpx_ShareBasedCompensationArrangementByShareBasedPaymentAwardPercentageAppliedOnOutstandingSharesOfCommonStockForAutomaticallyIncreaseOnEachYear Share Based Compensation Arrangement By Share Based Payment Award, Percentage Applied on Outstanding Shares of Common Stock For Automatically Increase on Each Year Share based compensation arrangement by share based payment award percentage applied on outstanding shares of common stock for automatically increase on each year. Fair Value Hierarchy and NAV [Axis] Grantee Status [Domain] Common stock, shares issued (in shares) Award Type [Domain] Common stock, shares outstanding (in shares) Common Stock, Shares, Outstanding (in shares) Share-Based Payment Arrangement, Employee [Member] Common stock, shares authorized (in shares) Common Stock, Shares Authorized (in shares) Grantee Status [Axis] Weighted average number of common shares — basic and diluted (in shares) Derivative Instrument [Axis] Net loss per share applicable to common stockholders — basic and diluted (in dollars per share) Research and Development Expense, Policy [Policy Text Block] Common stock $0.001 par value: 200,000,000 shares authorized; 9,044,856 and 3,291,488 shares issued and outstanding at March 31, 2026 and December 31, 2025, respectively us-gaap_ProceedsFromIssuanceOrSaleOfEquity Proceeds from Issuance or Sale of Equity Fair Value of Financial Instruments, Policy [Policy Text Block] Title and Position [Domain] October 2025, Registered Direct Offering 1 [Member] Repesents registered direct offering 1 on October 24, 2025. Earnings Per Share, Policy [Policy Text Block] us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1 Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) Outstanding, weighted average exercise price (in dollars per share) Outstanding, weighted average exercise price (in dollars per share) Net proceeds from issuances of common stock Proceeds from Issuance of Common Stock Collaborative Arrangement and Arrangement Other than Collaborative [Domain] Accounts payables us-gaap_PolicyTextBlockAbstract Accounting Policies us-gaap_DisclosureTextBlockAbstract Notes to Financial Statements us-gaap_TableTextBlock Notes Tables gnpx_RegisteredDirectOfferingWarrantPurchaseAgreementCommissionFeePercentageOfGrossProceeds Registered Direct Offering, Warrant Purchase Agreement, Commission Fee, Percentage of Gross Proceeds The commission fees expressed as a percentage of gross proceeds under the at registered direct offering agreement. Document Fiscal Period Focus Document Fiscal Year Focus us-gaap_StockholdersEquityNoteStockSplitConversionRatio1 Stockholders' Equity Note, Stock Split, Conversion Ratio gnpx_IncreaseDecreaseInResearchAndDevelopmentSupplies Research and development supplies The amount of increase (decrease) in research and development supplies. Amendment Flag Placement Agent Warrants [Member] Represents Placement Agent warrants. Common Stock [Member] Subsequent Events [Text Block] Excluding ELOC Purchase Agreement [Member] Relating to excluding ELOC purchase agreement. Document Period End Date gnpx_PolicyTable us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueVested Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Vested us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares) Legal Entity [Axis] Significant Accounting Policies [Text Block] Entity File Number us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2 Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term (Year) Entity Tax Identification Number Entity [Domain] Entity Central Index Key Entity Registrant Name Entity Current Reporting Status Entity Incorporation, State or Country Code Current Fiscal Year End Date Research and development Entity Filer Category gnpx_NumberOfPendingPatents Number of Pending Patents The number of pending patents. Entity Shell Company Entity Emerging Growth Company Fair Value, Liabilities Measured on Recurring Basis [Table Text Block] Entity Small Business us-gaap_OperatingIncomeLoss Operating loss Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block] Non-cash expenses(1) Revenues Derivative liability us-gaap_DerivativeLiabilitiesNoncurrent Entity Address, State or Province Loss Contingencies [Table] Statement of Stockholders' Equity [Abstract] Entity Address, City or Town Accumulated deficit Entity Address, Address Line One Class of Warrant or Right [Axis] us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue Share-Based Compensation Arrangement by Share-Based Payment Award, Option, Nonvested, Weighted Average Exercise Price (in dollars per share) Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Class of Warrant or Right [Domain] Statement of Cash Flows [Abstract] City Area Code Local Phone Number Entity Address, Postal Zip Code Stockholders’ equity: Title of 12(b) Security Equity Components [Axis] Security Exchange Name Trading Symbol Derivatives, Policy [Policy Text Block] Share-Based Payment Arrangement [Policy Text Block] Class of Stock [Axis] Equity Component [Domain] us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) Fair Value, Inputs, Level 2 [Member] Fair Value, Inputs, Level 3 [Member] Equity [Text Block] gnpx_LicenseAgreementMilestonePayment License Agreement Milestone Payment Disclosure of milestone payments made for License Agreements. Fair Value, Inputs, Level 1 [Member] Entity Common Stock, Shares Outstanding us-gaap_ClassOfWarrantOrRightOutstanding Class of Warrant or Right, Outstanding (in shares) Outstanding, warrants (in shares) Outstanding, warrants (in shares) Additional Paid-in Capital [Member] Retained Earnings [Member] Subsequent Event Type [Domain] gnpx_WarrantNonvestedAwardCostNotYetRecognizedAmount Warrant, Nonvested Award, Cost Not yet Recognized, Amount Amount of cost not yet recognized for nonvested warrant. Scenario [Axis] Performance-based Warrant [Member] Related to performance-based warrant. Subsequent Event [Table] Subsequent Event Type [Axis] Scenario [Domain] Property, Plant, and Equipment [Policy Text Block] Research and Development Arrangement, Contract to Perform for Others, Type [Axis] Sale of Stock [Axis] us-gaap_ProceedsFromWarrantExercises Proceeds from Warrant Exercises Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share (in dollars per share) Share-based compensation Research and Development Arrangement, Contract to Perform for Others, Type [Domain] Clinical and regulatory Clinical and Regulatory Expense Represents the total amount of clinical and regulatory expense. Derivative Contract [Domain] Other income License Agreement Terms [Member] Share-Based Payment Arrangement, Restricted Stock Unit, Activity [Table Text Block] Sale of Stock [Domain] Share-Based Payment Arrangement, Option, Activity [Table Text Block] us-gaap_Assets Total assets Cash and Cash Equivalents, Policy [Policy Text Block] Cash and cash equivalents The 2025 ELOC Facility [Member] Represents the 2025 ELOC facility. Share-Based Payment Arrangement, Option [Member] Current liabilities: Realized and unrealized gain (loss) us-gaap_LiabilitiesCurrent Total current liabilities Reverse Stock Split [Member] Represents the reverse stock split. gnpx_LicensingFeeAmountAnnualFirstTwoYears Licensing Fee, Amount, Annual, First Two Years Represents the amount of annual licensing fees. gnpx_LicensingFeeAmountAnnualFourthAndSubsequentYears Licensing Fee, Amount, Annual, Fourth and Subsequent Years Represents the amount of annual licensing fees. gnpx_LicensingFeeAmountAnnualThirdYear Licensing Fee, Amount, Annual, Third Year Represents the amount of annual licensing fee. NYU [Member] Represents the NYU. gnpx_NumberOfGrantedPatents Number of Granted Patents Represents the number of granted patents with exclusive license agreements. gnpx_LicensingFeeAmountManagement Licensing Fee, Amount, Management The amount of the management licensing fee. gnpx_LicensingFeeAmountStaggeredUpfront Licensing Fee, Amount, Staggered Upfront The amount of the staggered upfront licensing fee. The 2023 ATM Facility [Member] Represents the 2023 ATM facility. UTHealth Houston [Member] Represents the UTHealth Houston. Intangible Asset [Text Block] Consolidation, Policy [Policy Text Block] Options expired or cancelled, number of shares (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures and Expirations in Period (in shares) March 2024 Pre-Funded Warrants [Member] Represents the March 2024 pre-funded warrants. Intangible Asset, Finite-Lived [Table] Options expired or cancelled, weighted average exercise price (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures and Expirations in Period, Weighted Average Exercise Price (in dollars per share) Restricted stock units vested (in shares) Reverse Stock Split [Policy Text Block] Accounting policy for the reverse stock split during the period. Other non-current assets: us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber Outstanding (in shares) Outstanding (in shares) Restricted stock units granted (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Granted (in shares) General and administrative Warrants cancelled or expired, weighted average exercise price (in dollars per share) Exercise price per share of warrants or rights cancelled during period. Restricted stock units forfeited or cancelled (in shares) us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsForfeitures Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Forfeitures (in shares) us-gaap_CashUninsuredAmount Cash, Uninsured Amount Additional paid-in capital us-gaap_StockholdersEquity Total stockholders’ equity Balance Balance Restricted stock units forfeited or cancelled (in dollars per share) Segment Reporting, Policy [Policy Text Block] Use of Estimates, Policy [Policy Text Block] Prepaid expenses and other gnpx_ContractPaymentsIncurredAndPaid Contract Payments Incurred and Paid The value of contract payments incurred and paid. us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1 Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year) us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1 Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Month) us-gaap_PaymentForContingentConsiderationLiabilityOperatingActivities Payment for Contingent Consideration Liability, Operating Activities Stock, Class of Stock [Table] gnpx_LicensingFeeAmount Licensing Fee, Amount The amount of the agreed upon licensing fee. License Agreement [Member] An agreement where another party is permitted the right to use intangible asset. Intangible asset includes, but is not limited to, patent, copyright, technology, manufacturing process, software or trademark. gnpx_ResearchAndDevelopmentExpense1 Research Amount of expense for research and development. Includes, but is not limited to, cost for computer software product to be sold, leased, or otherwise marketed and writeoff of research and development assets acquired in transaction other than business combination or joint venture formation or both. Excludes write-down of intangible asset acquired in business combination or from joint venture formation or both, used in research and development activity. Intangible Assets, Finite-Lived, Policy [Policy Text Block] Current assets: gnpx_ManufacturingCosts1 Manufacturing The aggregate costs incurred in the production of goods for sale. gnpx_RoyaltyPercentLicensedTechnologyCoveredByPatent Royalty Percent, Licensed Technology Covered by Patent The percent of net sales of licensed technology covered by patents to be earned as royalty. Research and development supplies The amount of research and development assets classified as noncurrent. gnpx_AnnualMaintenanceFeeAfterYearThreeAmount Annual Maintenance Fee, After Year Three, Amount The annual maintenance fee after the third year of an agreement. Other current liabilities gnpx_AnnualMaintenanceFeeFirstThreeYearsAmount Annual Maintenance Fee, First Three Years, Amount The amount of annual maintenance fees for the first three years of an agreement. us-gaap_AssetsCurrent Total current assets University of Pittsburgh [Member] Information pertaining to the University of Pittsburgh. gnpx_ShareOfNonroyaltySublicenseIncomePercent Share of Non-Royalty Sublicense Income, Percent The share of non-royalty sublicense income, represented as a percent, to be received as part of an agreement. ecd_Rule10b51ArrTrmntdFlag Rule 10b5-1 Arrangement Terminated [Flag] gnpx_AnnualRoyaltyPaymentPerYearMinimum Annual Royalty Payment Per Year, Minimum The minimum amount of royalty payment to be received each year. ecd_Rule10b51ArrAdoptedFlag Rule 10b5-1 Arrangement Adopted [Flag] us-gaap_StockIssuedDuringPeriodSharesNewIssues Stock Issued During Period, Shares, New Issues (in shares) Commitments and contingencies (Note 6) Restricted Stock Units (RSUs) [Member] gnpx_MilestonePayment Milestone Payment The amount of a payment to be received upon achievement of an agreed upon milestone.