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Temporary Stock Issuance Costs Redeemable convertible preferred stock Issuance Costs Cash and Cash Equivalents, Policy [Policy Text Block] Cash Equivalents Other-than-temporary Impairment Loss, Debt Securities, Available-for-sale Other-than-temporary Impairment Loss, Debt Securities, Available-for-sale, Total Impairments to marketable securities or reserves for credit losses Temporary Equity Disclosure [Abstract] Entity Tax Identification Number Equity Component [Domain] Equity Component [Domain] Net Income (Loss) Available to Common Stockholders, Basic [Abstract] Numerator: Summary of Debt Securities, Available-for-sale Debt Securities, Available-for-sale [Table Text Block] Property, Plant and Equipment, Policy [Policy Text Block] Property and Equipment Share conversion ratio Stockholders' Equity Note, Stock Split, Conversion Ratio Agreement. Agreement [Axis] Agreement [Axis] Research Extension Fee Variable Consideration Research extension fee variable consideration. Research extension fees, variable consideration Business Combination and PIPE Financing, gross proceeds Proceeds From Business Combination And PIPE Financing Gross Proceeds from business combination and pipe financing gross. Income Tax Authority [Domain] Restricted Cash and Cash Equivalents [Axis] Unrecognized compensation cost, weighted average period Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition Share-based compensation expense, Period for recognition Subsequent Events [Abstract] Leasehold Improvements [Member] Leasehold improvements [Member] Leasehold Improvements [Member] License fee amount Sponsored a license program, fee amount. Sponsored A Licence Program,Fee Amount 2018 Gilead Agreement [Member] Two Thousand And Eighteen Gilead Agreement . Two Thousand And Eighteen Gilead Agreement [Member] Statement [Table] Statement [Table] Operating Lease, Weighted Average Remaining Lease Term Weighted average remaining lease term in years Redeemable convertible preferred stock conversion trigger  aggregate proceeds from public offering Temporary Stock Conversion Trigger Aggregate Proceeds From Public Offering Redeemable convertible preferred stock conversion trigger aggregate proceeds from public offering Revenue remaining obligation expected remaining contractual term. Revenue Remaining Obligation Expected Remaining Contractual Term Revenue remaining performance obligations expected remaining contractual term Entity File Number Computer Software [Member] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss, Total Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss Marketable securities, Accrued interest Upfront payment. 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Percentage Of Increase In Ownership Percentage Over A Three Year Period Percentage of increase in ownership percentage over a three year period Merger Exchange Ratio Stock Holders Equity Retroactive Application Of Recapitalization Shares Recapitalization Common Stock Retroactive application of recapitalization (in Shares) Stock holders equity retroactive application of recapitalization shares. Cover [Abstract] Leases Leases of Lessee Disclosure [Text Block] Proceeds from Issuance of Redeemable Convertible Preferred Stock Proceeds from Issuance of Redeemable Convertible Preferred Stock Proceeds from issuance of redeemable convertible preferred stock Redeemable Convertible Preferred Stock Outstanding Balance at the ending (in Shares) Balance at the beginning (in Shares) Temporary Equity, Shares Outstanding Temporary Equity, Shares Outstanding Statement of Stockholders' Equity [Abstract] Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] Share-based Payment Arrangement [Abstract] Share-based Payment Arrangement [Abstract] Expiration period. Expiration Period [Axis] Proceeds from License Fees Received Proceeds from license fee received Long-Lived Tangible Asset [Axis] Long-Lived Tangible Asset [Axis] Other Accrued Liabilities, Current Other current liabilities Document Transition Report Letter of Credit [Member] Letter of Credit [Member] Business Acquisition, Equity Interests Issued or Issuable [Line Items] Short-term Debt, Type [Axis] Short-term Debt, Type [Axis] Forecasting Taxable Loss Position Deferred Tax Assets [Member] Forecasting taxable loss position deferred tax assets member. Specified clinical milestones. Specified Clinical Milestones [Member] Specified Clinical Milestones [Member] Research and Development Expense, Total Research and Development Expense Research and development Deferred revenue, net of current portion Long-term deferred revenue Contract with Customer, Liability, Noncurrent Milestone payments receivable. Milestone Payments Receivable Milestone payments receivable HitGen agreement. HitGen Agreement [Member] HitGen Agreement [Member] Stock-based compensation expense Share-based Payment Arrangement, Expense Shares issued in exchange for Unvested restricted stock awards and unexercised stock options Stock Issued During Period Shares in Exchange for Unvested Restricted Stock Awards and Unexercised Stock Options Stock issued during period shares in exchange for unvested restricted stock awards and unexercised stock options. Temporary Equity, Liquidation Preference Per Share Temporary Equity, Liquidation Preference Fair Value, Liabilities, Level 2 to Level 1 Transfers, Amount Fair value liabilities transfer from Level 2 to Level 1 Redeemable convertible preferred stock disclosure. Redeemable Convertible Preferred Stock Disclosure [Text Block] Redeemable Convertible Preferred Stock Statement of Financial Position [Abstract] Preferred stock issuance costs included in accounts payable and accrued expenses Preferred Stock Issuance Costs Included in Accounts Payable And Accrued Expenses Preferred stock issuance costs included in accounts payable and accrued expenses. Contract asset, research extension fee ContractAssetResearchExtensionFee . ContractAssetResearchExtensionFee The Two Hundred And One Brookline Avenue Lease The Two Hundred And One Brookline Avenue Lease [Member] The Two Hundred And One Brookline Avenue Lease [Member] Operating Lease, Right-of-Use Asset, Amortization Expense Noncash operating lease expense Repayments of Convertible Debt Repayments of convertible notes and accrued interest Lessee, Operating Lease, Liability, to be Paid, Year Five 2025 APIC, Share-based Payment Arrangement, Option, Increase for Cost Recognition Stock based compensation expense Stockholders' equity: Stockholders' Equity Attributable to Parent [Abstract] Milestone payments achieved. Milestone Payments Achieved Milestone payments achieved Series A Redeemable Convertible Preferred Stock [Member] Series A redeemable convertible preferred stock. Series A Redeemable Convertible Preferred Stock [Member] Schedule of Earnings Per Share, Basic and Diluted Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Weighted Average Exercise Price Exercised Increase (Decrease) in Operating Capital [Abstract] Changes in operating assets and liabilities: Lessee, Operating Lease, Liability, to be Paid, Year Three 2023 Number of licensed product Number Of Licensed Product. Number Of Licensed Product Entity Common Stock, Shares Outstanding Option to terminate, description Lessee, Operating Lease, Option to Terminate Common Stock, Capital Shares Reserved for Future Issuance Share based payment arrangement, Shares reserved for future issuance Measurement Frequency [Axis] Award Type [Axis] Award Type [Axis] Less transaction costs and advisory fees paid Less transaction costs and advisory fees paid Transaction costs and redemptions Business Acquisition, Transaction Costs Retroactive Application Of Recapitalization Shares Retroactive application of recapitalization shares. Retroactive application of recapitalization (in Shares) Series A Shares [Member] Series A Common Shares [Member] Series A common shares. Entity Shell Company Debt Securities, Available-for-sale [Line Items] Liabilities and Stockholders' Equity Liabilities and Equity [Abstract] Entity Incorporation, State or Country Code Accrued Rent Accrued rent Disclosure of accounting policy for patent costs. Patent Costs [Policy Text Block] Patent Costs Earnings Per Share [Text Block] Net Loss Per Share Temporary stock convertible conversion price. Temporary Stock Convertible Conversion Price Redeemable convertible preferred stock conversion price Tax Credit Carryforward, Expiration Date Amendment Flag Schedule of Stock by Class [Table] Product and Service [Axis] Other income (expense): Nonoperating Income (Expense) [Abstract] Stock Option Activity [Member] Stock Option Activity [Member] Other expense, net Other Nonoperating Income (Expense), Total Other Nonoperating Income (Expense) Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value Share based payment arrangement,Options, Fair value of options vested during period Number of units issued in transaction (in Shares) Sale of Stock, Number of Shares Issued in Transaction Cash and Cash Equivalents, at Carrying Value, Ending Balance Cash and Cash Equivalents, at Carrying Value, Beginning Balance Cash and Cash Equivalents, at Carrying Value, Total Cash and Cash Equivalents, at Carrying Value Cash and cash equivalents Disclosure of accounting policy for share issuance costs. Share Issuance Costs [Policy Text Block] Share Issuance Costs New Accounting Pronouncements, Policy [Policy Text Block] Recently Adopted Accounting Pronouncements Proceeds from Fees Received Proceeds from fees received Tax Credit Carryforward, Amount Tax credit carryforwards Marketable Securities [Abstract] U.S.Treasury Bills And U.S.Government Agency Bonds U.S. Treasury Bills And U.S. Government Agency Bonds[Member] U.S.Treasury bill and U.S. government agency bonds. 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