3.24.2.u1 html 262 264 1 false 65 0 false 12 false false R1.htm 100000 - Document - Document And Entity Information Sheet http://vaccinex.com/20240630/taxonomy/role/Role_DocumentDocumentAndEntityInformation Document And Entity Information Cover 1 false false R2.htm 100010 - Statement - Condensed Balance Sheets (Unaudited) Sheet http://vaccinex.com/20240630/taxonomy/role/StatementCondensedBalanceSheetsUnaudited Condensed Balance Sheets (Unaudited) Statements 2 false false R3.htm 100020 - Statement - Condensed Balance Sheets (Unaudited) (Parenthetical) Sheet http://vaccinex.com/20240630/taxonomy/role/StatementCondensedBalanceSheetsUnauditedParenthetical Condensed Balance Sheets (Unaudited) (Parenthetical) Statements 3 false false R4.htm 100030 - Statement - Condensed Statements of Operations and Comprehensive Loss (Unaudited) Sheet http://vaccinex.com/20240630/taxonomy/role/StatementCondensedStatementsOfOperationsAndComprehensiveLossUnaudited Condensed Statements of Operations and Comprehensive Loss (Unaudited) Statements 4 false false R5.htm 100040 - Statement - Condensed Statements of Stockholders' Equity (Deficit) (Unaudited) Sheet http://vaccinex.com/20240630/taxonomy/role/StatementCondensedStatementsOfStockholdersEquityDeficitUnaudited Condensed Statements of Stockholders' Equity (Deficit) (Unaudited) Statements 5 false false R6.htm 100050 - Statement - Condensed Statements of Cash Flows (Unaudited) Sheet http://vaccinex.com/20240630/taxonomy/role/StatementCondensedStatementsOfCashFlowsUnaudited Condensed Statements of Cash Flows (Unaudited) Statements 6 false false R7.htm 100060 - Disclosure - Company and Nature of Business Sheet http://vaccinex.com/20240630/taxonomy/role/Role_DisclosureCompanyAndNatureOfBusiness Company and Nature of Business Notes 7 false false R8.htm 100070 - Disclosure - Summary of Significant Accounting Policies Sheet http://vaccinex.com/20240630/taxonomy/role/Role_DisclosureSummaryOfSignificantAccountingPolicies Summary of Significant Accounting Policies Notes 8 false false R9.htm 100080 - Disclosure - Balance Sheet Components Sheet http://vaccinex.com/20240630/taxonomy/role/Role_DisclosureBalanceSheetComponents Balance Sheet Components Notes 9 false false R10.htm 100090 - Disclosure - Fair Value Measurements of Financial Measurements Sheet http://vaccinex.com/20240630/taxonomy/role/Role_DisclosureFairValueMeasurementsOfFinancialMeasurements Fair Value Measurements of Financial Measurements Notes 10 false false R11.htm 100110 - Disclosure - Collaboration Agreements Sheet http://vaccinex.com/20240630/taxonomy/role/Role_DisclosureCollaborationAgreements Collaboration Agreements Notes 11 false false R12.htm 100120 - Disclosure - Commitments and Contingencies Sheet http://vaccinex.com/20240630/taxonomy/role/Role_DisclosureCommitmentsAndContingencies Commitments and Contingencies Notes 12 false false R13.htm 100130 - Disclosure - Leases Sheet http://vaccinex.com/20240630/taxonomy/role/Role_DisclosureLeases Leases Notes 13 false false R14.htm 100140 - Disclosure - Long-term Debt Sheet http://vaccinex.com/20240630/taxonomy/role/Role_DisclosureLongTermDebt Long-term Debt Notes 14 false false R15.htm 100150 - Disclosure - Convertible Preferred Stock Sheet http://vaccinex.com/20240630/taxonomy/role/DisclosureConvertiblePreferredStock Convertible Preferred Stock Notes 15 false false R16.htm 100160 - Disclosure - Warrants Sheet http://vaccinex.com/20240630/taxonomy/role/DisclosureWarrants Warrants Notes 16 false false R17.htm 100180 - Disclosure - Common Stock Reserved For Issuance Sheet http://vaccinex.com/20240630/taxonomy/role/Role_DisclosureCommonStockReservedForIssuance Common Stock Reserved For Issuance Notes 17 false false R18.htm 100190 - Disclosure - Stock-Based Compensation Sheet http://vaccinex.com/20240630/taxonomy/role/Role_DisclosureStockBasedCompensation Stock-Based Compensation Notes 18 false false R19.htm 100200 - Disclosure - Income Taxes Sheet http://vaccinex.com/20240630/taxonomy/role/Role_DisclosureIncomeTaxes Income Taxes Notes 19 false false R20.htm 100210 - Disclosure - Net Loss Per Share Attributable to Common Stockholders Sheet http://vaccinex.com/20240630/taxonomy/role/Role_DisclosureNetLossPerShareAttributableToCommonStockholders Net Loss Per Share Attributable to Common Stockholders Notes 20 false false R21.htm 100220 - Disclosure - Segment and Geographical Information Sheet http://vaccinex.com/20240630/taxonomy/role/Role_DisclosureSegmentAndGeographicalInformation Segment and Geographical Information Notes 21 false false R22.htm 100230 - Disclosure - Related Party Transactions Sheet http://vaccinex.com/20240630/taxonomy/role/Role_DisclosureRelatedPartyTransactions Related Party Transactions Notes 22 false false R23.htm 100250 - Disclosure - Summary of Significant Accounting Policies (Policies) Sheet http://vaccinex.com/20240630/taxonomy/role/Role_DisclosureSummaryOfSignificantAccountingPoliciesPolicies Summary of Significant Accounting Policies (Policies) Policies http://vaccinex.com/20240630/taxonomy/role/Role_DisclosureSummaryOfSignificantAccountingPolicies 23 false false R24.htm 100260 - Disclosure - Balance Sheet Components (Tables) Sheet http://vaccinex.com/20240630/taxonomy/role/Role_DisclosureBalanceSheetComponentsTables Balance Sheet Components (Tables) Tables http://vaccinex.com/20240630/taxonomy/role/Role_DisclosureBalanceSheetComponents 24 false false R25.htm 100270 - Disclosure - Fair Value Measurements of Financial Measurements (Tables) Sheet http://vaccinex.com/20240630/taxonomy/role/Role_DisclosureFairValueMeasurementsOfFinancialMeasurementsTables Fair Value Measurements of Financial Measurements (Tables) Tables http://vaccinex.com/20240630/taxonomy/role/Role_DisclosureFairValueMeasurementsOfFinancialMeasurements 25 false false R26.htm 100280 - Disclosure - Common Stock Reserved For Issuance (Tables) Sheet http://vaccinex.com/20240630/taxonomy/role/Role_DisclosureCommonStockReservedForIssuanceTables Common Stock Reserved For Issuance (Tables) Tables http://vaccinex.com/20240630/taxonomy/role/Role_DisclosureCommonStockReservedForIssuance 26 false false R27.htm 100290 - Disclosure - Stock-Based Compensation (Tables) Sheet http://vaccinex.com/20240630/taxonomy/role/Role_DisclosureStockBasedCompensationTables Stock-Based Compensation (Tables) Tables http://vaccinex.com/20240630/taxonomy/role/Role_DisclosureStockBasedCompensation 27 false false R28.htm 100300 - Disclosure - Net Loss Per Share Attributable to Common Stockholders (Tables) Sheet http://vaccinex.com/20240630/taxonomy/role/Role_DisclosureNetLossPerShareAttributableToCommonStockholdersTables Net Loss Per Share Attributable to Common Stockholders (Tables) Tables http://vaccinex.com/20240630/taxonomy/role/Role_DisclosureNetLossPerShareAttributableToCommonStockholders 28 false false R29.htm 100310 - Disclosure - Company and Nature of Business - Additional Information (Details) Sheet http://vaccinex.com/20240630/taxonomy/role/Role_DisclosureCompanyAndNatureOfBusinessAdditionalInformationDetails Company and Nature of Business - Additional Information (Details) Details 29 false false R30.htm 100320 - Disclosure - Summary of Significant Accounting Policies - Additional Information (Details) Sheet http://vaccinex.com/20240630/taxonomy/role/Role_DisclosureSummaryOfSignificantAccountingPoliciesAdditionalInformationDetails Summary of Significant Accounting Policies - Additional Information (Details) Details 30 false false R31.htm 100330 - Disclosure - Balance Sheet Components - Property and Equipment (Details) Sheet http://vaccinex.com/20240630/taxonomy/role/Role_DisclosureBalanceSheetComponentsPropertyAndEquipmentDetails Balance Sheet Components - Property and Equipment (Details) Details 31 false false R32.htm 100340 - Disclosure - Balance Sheet Components - Additional Information (Details) Sheet http://vaccinex.com/20240630/taxonomy/role/Role_DisclosureBalanceSheetComponentsAdditionalInformationDetails Balance Sheet Components - Additional Information (Details) Details 32 false false R33.htm 100350 - Disclosure - Balance Sheet Components - Schedule of Accrued Expenses (Details) Sheet http://vaccinex.com/20240630/taxonomy/role/Role_DisclosureBalanceSheetComponentsScheduleOfAccruedExpensesDetails Balance Sheet Components - Schedule of Accrued Expenses (Details) Details 33 false false R34.htm 100360 - Disclosure - Fair Value Measurements of Financial Measurements - Summary of Fair Value of Financial Assets and Liabilities by Level within Fair Value Hierarchy (Details) Sheet http://vaccinex.com/20240630/taxonomy/role/DisclosureFairValueMeasurementsOfFinancialMeasurementsSummaryOfFairValueOfFinancialAssetsAndLiabilitiesByLevelWithinFairValueHierarchyDe Fair Value Measurements of Financial Measurements - Summary of Fair Value of Financial Assets and Liabilities by Level within Fair Value Hierarchy (Details) Details 34 false false R35.htm 100370 - Disclosure - Fair Value Measurements of Financial Measurements - Additional Information (Details) Sheet http://vaccinex.com/20240630/taxonomy/role/Role_DisclosureFairValueMeasurementsOfFinancialMeasurementsAdditionalInformationDetails Fair Value Measurements of Financial Measurements - Additional Information (Details) Details 35 false false R36.htm 100380 - Disclosure - Fair Value Measurements of Financial Measurements - Summary of Key Inputs in to Valuation Models Used to Estimate Fair Value of Warrant Liabilities (Details) Sheet http://vaccinex.com/20240630/taxonomy/role/DisclosureFairValueMeasurementsOfFinancialMeasurementsSummaryOfKeyInputsInToValuationModelsUsedToEstimateFairValueOfWarrantLiabilitiesD Fair Value Measurements of Financial Measurements - Summary of Key Inputs in to Valuation Models Used to Estimate Fair Value of Warrant Liabilities (Details) Details 36 false false R37.htm 100390 - Disclosure - Fair Value Measurements of Financial Measurements - Summary of Changes in Fair Value of Company's Warrant Liabilities that is Recognized in Change in Fair Value of Warrant Liabilities in Accompanying Statements of Operations and Comprehensive Loss (Details) Sheet http://vaccinex.com/20240630/taxonomy/role/DisclosureFairValueMeasurementsOfFinancialMeasurementsSummaryOfChangesInFairValueOfCompanysWarrantLiabilitiesThatIsRecognizedInChangeIn Fair Value Measurements of Financial Measurements - Summary of Changes in Fair Value of Company's Warrant Liabilities that is Recognized in Change in Fair Value of Warrant Liabilities in Accompanying Statements of Operations and Comprehensive Loss (Details) Details 37 false false R38.htm 100400 - Disclosure - Fair Value Measurements of Financial Measurements - Schedule of Quantitative Information Regarding Measurement Inputs to Estimate the Fair Value of Asset (Details) Sheet http://vaccinex.com/20240630/taxonomy/role/DisclosureFairValueMeasurementsOfFinancialMeasurementsScheduleOfQuantitativeInformationRegardingMeasurementInputsToEstimateTheFairValueOfA Fair Value Measurements of Financial Measurements - Schedule of Quantitative Information Regarding Measurement Inputs to Estimate the Fair Value of Asset (Details) Details 38 false false R39.htm 100410 - Disclosure - Fair Value Measurements of Financial Measurements - Schedule of Changes in Derivative Assets (Details) Sheet http://vaccinex.com/20240630/taxonomy/role/DisclosureFairValueMeasurementsOfFinancialMeasurementsScheduleOfChangesInDerivativeAssetsDetails Fair Value Measurements of Financial Measurements - Schedule of Changes in Derivative Assets (Details) Details 39 false false R40.htm 100430 - Disclosure - Collaboration Agreements - Additional Information (Details) Sheet http://vaccinex.com/20240630/taxonomy/role/Role_DisclosureCollaborationAgreementsAdditionalInformationDetails Collaboration Agreements - Additional Information (Details) Details 40 false false R41.htm 100440 - Disclosure - Commitments and Contingencies - Additional Information (Details) Sheet http://vaccinex.com/20240630/taxonomy/role/Role_DisclosureCommitmentsAndContingenciesAdditionalInformationDetails Commitments and Contingencies - Additional Information (Details) Details 41 false false R42.htm 100450 - Disclosure - Leases - Additional Information (Details) Sheet http://vaccinex.com/20240630/taxonomy/role/Role_DisclosureLeasesAdditionalInformationDetails Leases - Additional Information (Details) Details 42 false false R43.htm 100460 - Disclosure - Long-term Debt - Additional Information (Details) Sheet http://vaccinex.com/20240630/taxonomy/role/Role_DisclosureLongTermDebtAdditionalInformationDetails Long-term Debt - Additional Information (Details) Details 43 false false R44.htm 100470 - Disclosure - Convertible Preferred Stock - Additional Information (Details) Sheet http://vaccinex.com/20240630/taxonomy/role/DisclosureConvertiblePreferredStockAdditionalInformationDetails Convertible Preferred Stock - Additional Information (Details) Details 44 false false R45.htm 100490 - Disclosure - Warrants - Additional Information (Details) Sheet http://vaccinex.com/20240630/taxonomy/role/DisclosureWarrantsAdditionalInformationDetails Warrants - Additional Information (Details) Details 45 false false R46.htm 100500 - Disclosure - Common Stock Reserved For Issuance - Common Stock Reserved For Potential Future Issuances (Details) Sheet http://vaccinex.com/20240630/taxonomy/role/Role_DisclosureCommonStockReservedForIssuanceCommonStockReservedForPotentialFutureIssuancesDetails Common Stock Reserved For Issuance - Common Stock Reserved For Potential Future Issuances (Details) Details 46 false false R47.htm 100510 - Disclosure - Stock-Based Compensation - Additional Information (Details) Sheet http://vaccinex.com/20240630/taxonomy/role/Role_DisclosureStockBasedCompensationAdditionalInformationDetails Stock-Based Compensation - Additional Information (Details) Details 47 false false R48.htm 100520 - Disclosure - Stock-Based Compensation - Summary of Stock Option Activity and Related Information (Details) Sheet http://vaccinex.com/20240630/taxonomy/role/Role_DisclosureStockBasedCompensationSummaryOfStockOptionActivityAndRelatedInformationDetails Stock-Based Compensation - Summary of Stock Option Activity and Related Information (Details) Details 48 false false R49.htm 100530 - Disclosure - Stock-Based Compensation - Grant Date Fair Value of Employee Stock Options Estimated Using Black-Scholes Option-Pricing Model with Weighted-Average Assumptions (Details) Sheet http://vaccinex.com/20240630/taxonomy/role/Role_DisclosureStockBasedCompensationGrantDateFairValueOfEmployeeStockOptionsEstimatedUsingBlackScholesOptionPricingModelWithWeightedAverageAssumptionsDetails Stock-Based Compensation - Grant Date Fair Value of Employee Stock Options Estimated Using Black-Scholes Option-Pricing Model with Weighted-Average Assumptions (Details) Details 49 false false R50.htm 100540 - Disclosure - Stock-Based Compensation - Total Stock-Based Compensation Expense Recognized in Condensed Statements of Operations and Comprehensive Loss (Details) Sheet http://vaccinex.com/20240630/taxonomy/role/DisclosureStockbasedCompensationTotalStockbasedCompensationExpenseRecognizedInCondensedStatementsOfOperationsAndComprehensiveLossDetails Stock-Based Compensation - Total Stock-Based Compensation Expense Recognized in Condensed Statements of Operations and Comprehensive Loss (Details) Details 50 false false R51.htm 100550 - Disclosure - Income Taxes - Additional Information (Details) Sheet http://vaccinex.com/20240630/taxonomy/role/Role_DisclosureIncomeTaxesAdditionalInformationDetails Income Taxes - Additional Information (Details) Details 51 false false R52.htm 100560 - Disclosure - Net Loss Per Share Attributable to Common Stockholders - Weighted-Average Common Stock Equivalents Excluded from Calculation of Diluted Net Loss Per Share as They Had Anti-Dilutive Effect (Details) Sheet http://vaccinex.com/20240630/taxonomy/role/Role_DisclosureNetLossPerShareAttributableToCommonStockholdersWeightedAverageCommonStockEquivalentsExcludedFromCalculationOfDilutedNetLossPerShareAsTheyHadAntiDilutiveEffectDetails Net Loss Per Share Attributable to Common Stockholders - Weighted-Average Common Stock Equivalents Excluded from Calculation of Diluted Net Loss Per Share as They Had Anti-Dilutive Effect (Details) Details 52 false false R53.htm 100570 - Disclosure - Segment and Geographic Information - Additional Information (Details) Sheet http://vaccinex.com/20240630/taxonomy/role/Role_DisclosureSegmentAndGeographicInformationAdditionalInformationDetails Segment and Geographic Information - Additional Information (Details) Details 53 false false R54.htm 100580 - Disclosure - Related Party Transactions - Additional Information (Details) Sheet http://vaccinex.com/20240630/taxonomy/role/Role_DisclosureRelatedPartyTransactionsAdditionalInformationDetails Related Party Transactions - Additional Information (Details) Details 54 false false All Reports Book All Reports vcnx-20240630.htm vcnx-20240630.xsd http://fasb.org/us-gaap/2024 http://xbrl.sec.gov/dei/2024 false false