100000 - Document - Document and Entity Information
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100010 - Statement - Consolidated Balance Sheets
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100020 - Disclosure - Commitments and Contingencies - Schedule of Future Minimum Lease Payments Under Non-cancellable Operating Lease Obligations (Details) 2
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100030 - Statement - Consolidated Balance Sheets (Parenthetical)
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100040 - Statement - Consolidated Statements of Operations and Comprehensive Loss
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100050 - Statement - Consolidated Statements of Stockholders' Equity (Deficit)
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100060 - Statement - Consolidated Statements of Cash Flows
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995455 - Disclosure - Organization and Basis of Presentation
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995465 - Disclosure - Summary of Significant Accounting Policies
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995475 - Disclosure - Fair Value Measurements
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995485 - Disclosure - Consolidated Balance Sheet Components
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995495 - Disclosure - Commitments and Contingencies
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995505 - Disclosure - Term Loan Facilities
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995515 - Disclosure - Stockholders' Equity
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995525 - Disclosure - Stock-Based Compensation
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995535 - Disclosure - Income Taxes
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995545 - Disclosure - Net Loss Per Share
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995555 - Disclosure - Subsequent Events
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995565 - Disclosure - Summary of Significant Accounting Policies (Policies)
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995575 - Disclosure - Fair Value Measurements (Tables)
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995585 - Disclosure - Consolidated Balance Sheet Components (Tables)
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995595 - Disclosure - Commitments and Contingencies (Tables)
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995605 - Disclosure - Term Loan Facilities (Tables)
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995615 - Disclosure - Stockholders' Equity (Tables)
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995625 - Disclosure - Stock-Based Compensation (Tables)
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995635 - Disclosure - Income Taxes (Tables)
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995645 - Disclosure - Net Loss Per Share (Tables)
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995655 - Disclosure - Organization and Basis of Presentation - Additional Information (Details)
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995665 - Disclosure - Summary of Significant Accounting Policies - Additional Information (Details)
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995675 - Disclosure - Fair Value Measurements - Summary of Financial Assets Measured at Fair Value on Recurring Basis (Details)
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995685 - Disclosure - Fair Value Measurements - Schedule of Contractual Maturities of Cash Equivalents and Marketable Securities (Details)
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995695 - Disclosure - Consolidated Balance Sheet Components - Schedule of Prepaid and Other Current Assets (Details)
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995705 - Disclosure - Consolidated Balance Sheet Components - Schedule of Accrued Expenses (Details)
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995715 - Disclosure - Commitments and Contingencies - Additional Information (Details)
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995725 - Disclosure - Commitments and Contingencies - Schedule of Future Minimum Lease Payments Under Non-cancellable Operating Lease Obligations (Details)
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995735 - Disclosure - Commitments and Contingencies - Schedule of Future Minimum Annual Payments for Operating Leases (Details)
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995745 - Disclosure - Term Loan Facilities - Additional Information (Details)
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995755 - Disclosure - Term Loan Facilities - Schedule of Maturities of Principal Obligations (Details)
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995765 - Disclosure - Stockholders' Equity - Schedule of Shares of Common Stock Available for Future Issuance (Details)
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995775 - Disclosure - Stockholders' Equity - Additional Information (Details)
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995785 - Disclosure - Stockholders' Equity - Schedule of Outstanding Warrants to Purchase Shares of Common Stock (Details)
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995795 - Disclosure - Stock-Based Compensation - Additional Information (Details)
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995805 - Disclosure - Stock-Based Compensation - Summary of Stock Option Activity (Details)
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995815 - Disclosure - Stock-Based Compensation - Summary of Estimated Fair Value of Stock Options Granted Using Black-Scholes Option-Pricing Model (Details)
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995825 - Disclosure - Stock-Based Compensation - Summary of Restricted Stock and Performance Stock Unit Activity (Details)
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995835 - Disclosure - Stock-Based Compensation - Summary of Stock-Based Compensation (Details)
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995845 - Disclosure - Income Taxes - Summary of Statutory Tax Rates Applicable to Income of Company and Subsidiaries (Details)
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995855 - Disclosure - Income Taxes - Summary of Income Tax (Expense) Benefit (Details)
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995865 - Disclosure - Income Taxes - Summary of Components of Deferred Tax Assets (Details)
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995875 - Disclosure - Income Taxes - Additional Information (Details)
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995885 - Disclosure - Income Taxes - Summary of Loss from Operations Before Taxes on Income (Details)
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995895 - Disclosure - Income Taxes - Summary of Reconciliation of Income Tax (Expense) Benefit Statutory Tax Rate to Effective Tax Rate (Details)
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995905 - Disclosure - Income Taxes - Summary of a Reconciliation of The Beginning And Ending Amount of Unrecognized Tax Benefits (Details)
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995915 - Disclosure - Net Loss Per Share - Schedule of Weighted-average Shares Outstanding Used to Calculate Basic and Diluted Net Loss Per Share (Details)
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995925 - Disclosure - Net Loss Per Share - Schedule of Outstanding Potentially Dilutive Securities Excluded From Calculation of Diluted Net Loss (Details)
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995935 - Disclosure - Net Loss Per Share -Schedule of Outstanding Potentially Dilutive Securities Excluded From Calculation of Diluted Net Loss (Parenthetical) (Details)
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Auditor Firm ID
Auditor Firm ID
2024
Lessee, Operating Lease, Liability, to be Paid, Year One
Collaborative Arrangement and Arrangement Other than Collaborative [Domain]
Collaborative Arrangement and Arrangement Other than Collaborative
Document Transition Report
Document Transition Report
Increase (decrease) related to prior year positions
Unrecognized Tax Benefits, Increase (Decrease) Resulting from Prior Period Tax Positions
Amount of increase (Decrease) in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term
Weighted Average Remaining Contractual Term (In years), Outstanding
Deferred Tax Assets, in Process Research and Development
Research and development expenses
Money Market Funds [Member]
Money Market Funds
Prepayment fee percentage.
Prepayment Fee Percentage
Prepayment fee percentage
Debt instrument, effective interest rate
Debt Instrument, Effective Interest Rate During Period
Debt instrument, effective interest rate during period.
Payments of Stock Issuance Costs
Other offering costs
Geographical [Axis]
Geographical
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period
Vesting period
Total cash equivalents and marketable securities
Debt Securities, Available-for-Sale
Short-term investments, Aggregated Fair Value
Other non-current liabilities
Other Liabilities, Noncurrent
Prepaid and other assets
Increase (Decrease) in Prepaid Expense and Other Assets
Restricted Stock Units (RSUs) [Member]
Restricted Stock Units (RSUs)
Other Assets [Member]
Other Assets
Fair Value, Inputs, Level 1 [Member]
Level 1
Entity Public Float
Entity Public Float
2027
Lessee, Operating Lease, Liability, to be Paid, Year Four
Percentage of ownership limitation
Beneficial Ownership Limitation On Exercise Of Warrant
Beneficial ownership limitation on exercise of warrant.
Fair Value Disclosures [Text Block]
Fair Value Measurements
Income Tax, Policy [Policy Text Block]
Income Taxes
Property, Plant and Equipment, Useful Life
Property and equipment, estimated useful lives
Prepaid Expense and Other Assets, Current [Abstract]
Minimum unrestriced cash and cash equivalents to three month average cash and cash equivalents multiplier
Minimum Unrestriced Cash And Cash Equivalents to Three Month Average Cash And Cash Equivalents Multiplier
Minimum unrestriced cash and cash equivalents to three month average cash and cash equivalents multiplier.
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount
Deferred tax assets, change in valuation allowance
ICFR Auditor Attestation Flag
ICFR Auditor Attestation Flag
Title of Individual [Domain]
Title of Individual
Subsequent Events
Subsequent Events [Text Block]
Accumulated tax loss carry forward.
Accumulated Tax Loss Carry Forward
Accumulated tax loss carryforward
Proceeds from issuance of common stock and warrants in public offerings, net of issuance costs
Proceeds from issuance public offering.
Proceeds From Issuance Public Offering
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]
Summary of Financial Assets Measured at Fair Value on Recurring Basis
Operating lease liabilities, non-current
Operating Lease, Liability, Noncurrent
Schedule of Stock by Class [Table]
Two thousand and twenty three loan agreement.
Two Thousand and Twenty Three Loan Agreement [Member]
2023 Loan Agreement
Asset transfer and license agreement termination period after written notice.
Asset Transfer And License Agreement Termination Period After Written Notice
Asset transfer and license agreement, termination period after written notice
Debt Instrument, Maturity Date, Description
Debt instrument, maturity date, description
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Debt discount
Less unamortized debt discount
Less unamortized debt discount
Less unamortized debt discount
Debt Instrument, Unamortized Discount
Debt Instrument, Unamortized Discount, Total
Class of Stock [Line Items]
Class Of Stock [Line Items]
Balance Sheet Location [Axis]
Balance Sheet Location
Assets, Current
Total current assets
Liabilities and Equity
Total liabilities and stockholders’ equity
Entity Address, State or Province
Entity Address, State or Province
Deferred Tax Assets, Other
Other
Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract]
Deferred:
Operating Leases, Future Minimum Payments, Due in Two Years
2023
Term Loan Facilities
Long-Term Debt [Text Block]
Stock Issued During Period, Value, New Issues
Issuance of common stock
Common stock remaining for future sales
Common Stock Remaining For Future Sales
Common stock remaining for future sales.
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number
Outstanding, Ending Balance
Outstanding, Beginning Balance
Outstanding
Weighted average grant date fair value
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value
Weighted average fair value options granted
Comprehensive Income (Loss), Net of Tax, Attributable to Parent
Comprehensive loss
Trading Symbol
Trading Symbol
Deferred Tax Assets, Net of Valuation Allowance
Total deferred tax assets
Percentage of increase in number of shares of capital stock reserved for issuance.
Percentage Of Increase In Number Of Shares Of Capital Stock Issued And Outstanding
Percentage of increase in number of shares of capital stock issued and outstanding
Common Stock, Shares, Issued
Common stock, shares issued
2025
Long-Term Debt, Maturity, Year Two
Fair value, vested
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value
ATM facility.
A T M Facility [Member]
A T M Facility
Prepaid Expense and Other Assets, Current
Prepaid and other current assets
Total prepaid and other current assets
Consolidated Entities [Domain]
Consolidated Entities
Schedule of Long-Term Debt Instruments [Table]
Debt Instrument [Table]
Foreign Tax Authority [Member]
Foreign
Shares, Outstanding
Ending balance, shares
Beginning balance, shares
2026
Lessee, Operating Lease, Liability, to be Paid, Year Three
Common stock shares reserved for future issuance
Common Stock, Capital Shares Reserved for Future Issuance
Total available for future issuance
Accumulated Other Comprehensive (Loss) Income
AOCI Attributable to Parent [Member]
Accumulated Other Comprehensive Loss
Total other comprehensive income (loss)
Other comprehensive income (loss)
Other Comprehensive Income (Loss), Net of Tax
Term loan, current portion
Long-Term Debt, Current Maturities
Long-Term Debt, Current Maturities, Total
Foreign Currency Transactions and Translations Policy [Policy Text Block]
Foreign Currencies
Entity Address, City or Town
Entity Address, City or Town
Pre- Funded Warrants excluded
Class of Warrant or Right, Outstanding
Shares of Common Stock Underlying Warrants
Subsequent Event [Member]
Subsequent Event
Subsequent Event Type [Axis]
Increase related to prior year positions
Increase (decrease) related to prior year positions
Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions
Additional Paid-in Capital [Member]
Additional Paid-in Capital
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Amount
Foreign rate differential
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]
Summary of Income Tax (Expense) Benefit
Tax year under examination
Income Tax Examination, Year under Examination
Property, Plant and Equipment, Estimated Useful Lives
Property, Plant, and Equipment, Useful Life, Term, Description [Extensible Enumeration]
Liabilities, Current [Abstract]
Current liabilities:
Assets, Current [Abstract]
Current assets:
Preferred Stock, Par or Stated Value Per Share
Preferred stock, par value
Statement of Stockholders' Equity [Abstract]
Amortization period
Amortization Period
Amortization period
Change in accounting principle, accounting standards update, immaterial effect [true false]
Change in Accounting Principle, Accounting Standards Update, Immaterial Effect [true false]
Operating lease liabilities, current
Operating Lease, Liability, Current
Marketable Securities
Marketable Securities, Policy [Policy Text Block]
Debt Instrument, Maturity Date
Debt instrument, maturity date
Total net carry value
Long-Term Debt
Long-Term Debt, Total
Property, Plant and Equipment, Net
Property and equipment, net
Property, Plant and Equipment, Net, Total
Deferred income taxes
Deferred income taxes
Increase (Decrease) in Deferred Income Taxes
89Bio Ltd.
Eighty Nine Bio Ltd [Member]
89Bio Ltd
Collaborative Arrangement and Arrangement Other than Collaborative [Axis]
Collaborative Arrangement and Arrangement Other than Collaborative
Entity Central Index Key
Entity Central Index Key
Class of Warrant or Right, Number of Securities Called by Warrants or Rights
Warrants to purchase common stock
Warrants to purchase shares of common stock
Plan Name [Domain]
Plan Name
Stock Options Outstanding
Stock Options Outstanding [Member]
Stock options outstanding member.
Subsidiary or Equity Method Investee, Sale of Stock by Subsidiary or Equity Investee [Table]
Subsidiary Or Equity Method Investee Sale Of Stock By Subsidiary Or Equity Investee [Table]
Tranche One
Tranche one.
Tranche One [Member]
Preferred Stock, Shares Outstanding
Preferred stock, shares outstanding
Preferred Stock, Shares Outstanding, Beginning Balance
Preferred Stock, Shares Outstanding, Ending Balance
Current Foreign Tax Expense (Benefit)
Foreign
Foreign
Liabilities, Current
Total current liabilities
Entity Tax Identification Number
Entity Tax Identification Number
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest
Net loss before income tax
Net loss before income tax
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table]
Schedule Of Antidilutive Securities Excluded From Computation Of Earnings Per Share [Table]
Increase (Decrease) in Operating Capital [Abstract]
Changes in operating assets and liabilities:
Line of Credit Facility, Description
Line of credit facility, description
Financial Instruments [Domain]
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-Based Compensation Cost
Stock-based compensation
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Research and Development, Amount
Research and development credits, net of uncertain tax position
Debt Instrument, Term
Fair measurement input
Stock Issued During Period, Value, Employee Stock Purchase Plan
Issuance of common stock upon ESPP purchase
Class of Warrant or Right [Line Items]
Class Of Warrant Or Right [Line Items]
Plan Name [Axis]
Plan Name
Operating lease right-of-use assets
Deferred tax liabilities rights of use assets.
Deferred Tax Liabilities Rights Of Use Assets
Operating lease right-of-use asset
Geographical [Domain]
Geographical
Assets
Total assets
UNITED STATES
United States
Service-based RSUs member.
Service Based R S Us [Member]
Service-based RSUs
Operating lease right-of-use assets
Operating Lease, Right-of-Use Asset
Interest related to uncertain tax positions
Unrecognized Tax Benefits, Interest on Income Taxes Expense
Unrecognized unvested stock option
Share-Based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount
Pre-funded Warrants To Purchase Common Stock
Pre-funded Warrants To Purchase Common Stock [Member]
Pre-funded warrants to purchase common stock member.
Entity Registrant Name
Entity Registrant Name
Executive Officer [Member]
Executive Officer
Retained Earnings (Accumulated Deficit)
Accumulated deficit
Retained Earnings (Accumulated Deficit), Total
Supplemental Cash Flow Information [Abstract]
Supplemental disclosures of cash information:
Retained Earnings [Member]
Retained Earnings
Accumulated Deficit
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number
Outstanding, Ending Balance
Outstanding, Beginning Balance
Outstanding, Ending Balance
Tranche Two
Tranche Two [Member]
Tranche two.
Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount
Income tax benefit computed at statutory rates
Deferred income taxes
Deferred Income Tax Liabilities, Net
Issuance of common stock upon ESPP purchase, shares
Number of shares, common stock issued under ESPP
Stock Issued During Period, Shares, Employee Stock Purchase Plans
Minimum [Member]
Minimum
Schedule of Contractual Maturities of Cash Equivalents and Marketable Securities
Investments Classified by Contractual Maturity Date [Table Text Block]
Significant Accounting Policies [Text Block]
Summary of Significant Accounting Policies
Operating Lease, Liability, Total
Operating Lease, Liability
Present value of operating lease liability
Schedule of prepaid and other current assets.
Schedule Of Prepaid And Other Current Assets Table [Text Block]
Schedule of Prepaid and Other Current Assets
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Minimum
Expected volatility, minimum
Equity Component [Domain]
Equity Component
Stock Option Awards
Change in Accounting Principle, Accounting Standards Update, Adoption Date
Change in accounting principle, accounting standards update, adoption date
Amortization of debt discount and accretion of deferred debt costs
Amortization of Debt Issuance Costs and Discounts
Amortization of Debt Issuance Costs and Discounts, Total
Repaid line of credit
Repayments of Lines of Credit
Period for increase in number of shares of common stock reserved for issuance.
Period For Increase In Number Of Shares Of Common Stock Reserved For Issuance
Period for increase in number of shares of common stock reserved for issuance
Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract]
Adjustments to reconcile net loss to net cash used in operating activities:
Tax credit carryforward expiration year.
Tax Credit Carryforward Expiration Year
Carryforward tax losses expiration year
Measurement Frequency [Axis]
Measurement Frequency
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Weighted Average Exercise Price
Debt Disclosure [Abstract]
Debt Instrument, Basis Spread on Variable Rate
Debt instrument, basis spread on variable rate
Entity Current Reporting Status
Entity Current Reporting Status
Authorized shares of common stock
Common Stock, Shares Authorized
Common stock, shares authorized
Research and Development Expense
Research and development
Research and Development Expense, Total
Deferred Tax Liabilities, Gross
Total deferred tax liabilities
Total deferred tax liabilities
Total deferred tax liabilities
Total deferred tax liabilities
Conversion of principal amount
Debt Conversion, Converted Instrument, Amount
Deferred Foreign Income Tax Expense (Benefit)
Foreign
Foreign
Assets [Abstract]
Assets
Proceeds from issuance of common stock upon ESPP purchases
Proceeds from issuance of common stock, net of underwriters discount and commissions
Proceeds from issuance of common stock, net of commissions and offering expenses
Measurement Input, Expected Term [Member]
Measurement Input, Expected Term
Subsidiary, Sale of Stock [Line Items]
Subsidiary Sale Of Stock [Line Items]
Common stock, $0.001 par value; 200,000,000 and 100,000,000 shares authorized and 93,269,377 and 50,560,590 shares issued and outstanding as of December 31, 2023 and 2022, respectively
Common Stock, Value, Issued
Conversion price per share
Debt Instrument, Convertible, Conversion Price
Accrued Liabilities, Current
Accrued expenses
Total accrued expenses
Operating Leases, Future Minimum Payments, Remainder of Fiscal Year
2022
Current Fiscal Year End Date
Current Fiscal Year End Date
Stock compensation expense recognized
Share-Based Payment Arrangement, Noncash Expense
Stock-based compensation
Share-Based Payment Arrangement, Noncash Expense, Total
Auditor Name
Auditor Name
Unrecognized Tax Benefits, Period Increase (Decrease)
Increase in unrecognized tax benefits
Unrecognized Tax Benefits, Period Increase (Decrease), Total
Operating Income (Loss)
Loss from operations
Operating Income (Loss), Total
Proceeds from issuance of common stock in at-the-market public offering, net of issuance costs
Proceeds From Issuance Public Offering At The Market Offering
Proceeds from issuance public offering at the market offering.
Tax Period [Axis]
Deferred income taxes
Total deferred
Deferred Income Tax Expense (Benefit)
Total
Total
Income tax expense
Income Tax Expense (Benefit)
Income Tax Expense (Benefit), Total
Income tax (expense) benefit
Income tax (expense) benefit
Effective Income Tax Rate Reconciliation, Other Adjustments, Amount
Other
Issuance of common stock upon exercise of warrants
Stock Issued During Period Value Warrants Exercised
Stock Issued During Period Value Warrants Exercised
Research and Development Expense [Member]
Research and Development Expenses
Research and Development
2027
Long-Term Debt, Maturity, Year Four
Proceeds from sales and maturities of marketable securities
Proceeds from Sale and Maturity of Debt Securities, Available-for-Sale
Proceeds from Sale and Maturity of Debt Securities, Available-for-Sale, Total
Lessee, Leases [Policy Text Block]
Leases
Compensation expense
Share-Based Payment Arrangement, Expense
Total stock-based compensation
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Maximum
Expected volatility, maximum
Taxable income utilization percentage.
Taxable Income Utilization Percentage
Taxable income utilization percentage
Payments for taxes related to net share settlement upon vesting of restricted stock units
Payment, Tax Withholding, Share-Based Payment Arrangement
Payment of withholding taxes related to restricted stock units
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage
Percentage of option vesting
Measurement Input Type [Domain]
Measurement Input Type
Operating lease liabilities
Increase (Decrease) in Operating Lease Liability
Operating lease liability
San Francisco office.
San Francisco Office [Member]
San Francisco Office
Valuation Approach and Technique [Domain]
Valuation Approach and Technique
Income tax expense
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Amount
Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block]
Impairment of Long-Lived Assets
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Intrinsic Value
Aggregate Intrinsic Value Outstanding
Aggregate Intrinsic Value Outstanding
Aggregate Intrinsic Value
Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents [Abstract]
Components of cash and cash equivalents, and restricted cash:
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table]
Schedule Of Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Table]
Earnings Per Share, Policy [Policy Text Block]
Basic and Diluted Net Loss per Share
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount
Change in valuation allowance
Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions
Increase related to current year positions
Interest income and other, net
Other Nonoperating Income (Expense)
Other Nonoperating Income (Expense), Total
Offering price per share
Sale of Stock, Price Per Share
Accrued research and development expense current.
Accrued Research And Development Expense Current
Accrued research and development expenses
Operating Expenses [Abstract]
Operating expenses:
Entity Voluntary Filers
Entity Voluntary Filers
Unpaid offering costs included in accrued expenses
Unpaid Offering Costs Included In Accrued Expenses
Unpaid offering costs included in accrued expenses.
Subsequent Events [Abstract]
Commitments and Contingencies Disclosure [Abstract]
Other Assets, Noncurrent
Other assets
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross
Granted
Shares granted
Other Accrued Liabilities, Current
Accrued other expenses
Equity [Text Block]
Stockholders' Equity
Agency Securities [Member]
Agency bonds
Depreciation
Depreciation
Depreciation, Total
Interest Paid, Excluding Capitalized Interest, Operating Activities
Cash paid for interest
The Weighted-average Shares Outstanding Used To Calculate Basic And Diluted Net Loss Per Share [Line Items]
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Issuance of common stock upon cashless exercise of warrants
Stock Issued During Period Value Cashless Exercise Of Warrants
Stock Issued During Period Value Cashless Exercise Of Warrants.
LITHUANIA
LITHUANIA
Selling commission per shares sold percentage.
Selling Commission Per Shares Sold Percentage
Selling commission per shares sold percentage
Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain, before Tax
Short-term investments, Gross Unrealized Holding Gains
Equity, Attributable to Parent [Abstract]
Stockholders’ equity:
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity
Line of credit facility, maximum borrowing capacity
Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block]
Schedule of Outstanding Warrants to Purchase Shares of Common Stock
Offering price per share
Common Stock And Warrants Combined Offering Price Per Share
Common stock and warrants combined offering price per share.
Earnings Per Share [Abstract]
Unrealized gain (loss) on marketable securities
OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment and Tax
OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment and Tax, Total
Schedule of Future Minimum Lease Payments Under Non-cancellable Operating Lease Obligations
Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block]
Loss Contingencies [Table]
Loss Contingencies [Table]
Unrecognized tax benefits
Effective Income Tax Rate Reconciliation, Tax Contingency, Amount
Effective Income Tax Rate Reconciliation, Tax Contingency, Amount, Total
Combined price of prefunded and common stock warrant
Prefunded And Common Stock Warrants
Prefunded and common stock warrants.
Accounting Policies [Abstract]
Eighty Nine Bio Management, Inc.
Eighty Nine Bio Management Incorporation [Member]
89bio Management, Inc.
Concentration Risk, Credit Risk, Policy [Policy Text Block]
Concentrations of Credit Risk
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Warrants Term Loan
Warrant Term Loan [Member]
Warrant term loan member.
Lessee, Operating Lease, Remaining Lease Term
Remaining lease term
Earnings Per Share, Basic, Total
Earnings Per Share, Basic
Net loss per share, basic
Commitments and Contingencies
Commitments and contingencies (Note 5)
Income Statement [Abstract]
Available for sale securities debt maturities after one through two years fair value.
Available For Sale Securities Debt Maturities After One Through Two Years Fair Value
After one year through two years
Performance Stock Units (PSUs)
Performance Shares [Member]
Measurement Input Type [Axis]
Measurement Input Type
Statistical Measurement [Domain]
Statistical Measurement
Maximum amount of equity shares issuable
Maximum Amount Of Equity Shares Issuable
Maximum amount of equity shares issuable.
Loss Contingencies [Line Items]
Loss Contingencies [Line Items]
Net Cash Provided by (Used in) Operating Activities
Net cash used in operating activities
Sale of Stock, Description of Transaction
Public offering description
ATM Facility description
Document Period End Date
Document Period End Date
Statistical Measurement [Axis]
Statistical Measurement
Commitments and Contingencies Disclosure [Text Block]
Commitments and Contingencies
Earnings Per Share, Diluted, Total
Earnings Per Share, Diluted
Net loss per share, diluted
Operating Loss Carryforwards, Limitations on Use
Operating loss carryforwards limitations on use
Measurement Input, Expected Dividend Payment [Member]
Measurement Input, Expected Dividend Payment
Deferred Tax Assets, Operating Loss Carryforwards
Net operating loss carryforwards
Deferred Tax Assets, Operating Loss Carryforwards, Total
Unrecognized tax benefits, exclusive of interest
Unrecognized tax benefits
Unrecognized tax benefits
Unrecognized Tax Benefits
Balance, beginning of year
Balance, end of year
Debt Instrument, Name [Domain]
Debt Instrument, Name
Fair Value Hierarchy and NAV [Domain]
Fair Value Hierarchy and NAV
Years open for examination
Open Tax Year
Exercisable as of December 31, 2023
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Number
Other non-current liabilities
Increase (Decrease) in Other Noncurrent Liabilities
Tevas development program.
Tevas Development Program [Member]
Teva's Development Program
Fair Value, Recurring [Member]
Recurring
Additional Paid in Capital, Common Stock
Additional paid-in capital
Schedule of Maturities of Principal Obligations
Schedule of Maturities of Long-Term Debt [Table Text Block]
Underwriting discounts and commissions
Underwriting Discounts And Commissions
Underwriting discounts and commissions.
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding [Roll Forward]
Number of Options
Deferred Tax Assets, Net
Net deferred tax assets
Remeasurement of lease liability and right of use asset in connection with lease modification
Remeasurement Of Lease Liability And Right Of Use Asset In Connection With Lease Modification
Remeasurement of lease liability and right of use asset in connection with lease modification.
Income Tax.
Income Tax Disclosure [Line Items]
Income Tax Disclosure [Line Items]
U.S. Treasury securities
US Treasury Securities [Member]
Effective income tax rate reconciliation state deferred tax true-up due to change in apportionment.
Effective Income Tax Rate Reconciliation State Deferred Tax True-up Due To Change In Apportionment
State deferred tax true-up due to change in apportionment
Cash, Cash Equivalents, and Short-Term Investments
Cash and cash equivalents and short term available-for-sale securities
Cash, Cash Equivalents, and Short-Term Investments, Total
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period
Issuance of common stock upon exercise of stock options, shares
Exercised
Consolidation, Policy [Policy Text Block]
Principles of Consolidation
Two thousand and twenty equity incentive plan.
Two Thousand And Twenty Equity Incentive Plan [Member]
2020 Plan
Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, Year One
Within one year
Liabilities and Equity [Abstract]
Liabilities and stockholders’ equity
Schedule of Earnings Per Share, Basic, by Common Class, Including Two Class Method [Table]
Fair value of warrant assumptions, dividends.
Fair Value Of Warrants Assumptions Dividends
Fair value of warrant assumptions, dividends
Entity Address, Postal Zip Code
Entity Address, Postal Zip Code
Schedule of Shares of Common Stock Available for Future Issuance
Schedule Of Common Stock Reserved For Issuance Table [Text Block]
Schedule of common stock reserved for issuance.
Entity Interactive Data Current
Entity Interactive Data Current
Issuance of common stock warrant in connection with term loan facility
Stock Issued
Decrease in income tax expense due to unrecognized tax benefits if recognized
Unrecognized Tax Benefits that Would Impact Effective Tax Rate
Unrecognized tax benefits impact effective tax rate
Increase (Decrease) in Accounts Payable
Accounts payable
Increase (Decrease) in Accounts Payable, Total
Latest Tax Year
Latest Tax Year [Member]
Equity [Abstract]
Lessee, Operating Lease, Liability, Undiscounted Excess Amount
Less: imputed interest
Milestone payment.
Milestone Payment
Milestone payments
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period
Granted
Share based compensation arrangement by share based payment award options aggregate intrinsic value.
Share Based Compensation Arrangement By Share Based Payment Award Options Aggregate Intrinsic Value [Abstract]
Aggregate Intrinsic Value
Entity Well-known Seasoned Issuer
Entity Well-known Seasoned Issuer
Two Thousand Nineteen Employee Stock Purchase Plan Member
2023 Inducement Plan and 2019 Employee Stock Purchase Plan
Two thousand twenty three inducement plan and two thousand nineteen employee stock purchase plan.
Municipal Bonds [Member]
Municipal Bonds
Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price
Weighted Average Exercise Price, Exercised
Entity Incorporation, State or Country Code
Entity Incorporation, State or Country Code
Share based compensation arrangement by share based payment award options weighted average remaining contractual term.
Share Based Compensation Arrangement By Share Based Payment Award Options Weighted Average Remaining Contractual Term [Abstract]
Weighted Average Remaining Contractual Term (In years)
Equity Components [Axis]
Equity Components
Expiration Date
Warrants And Rights Outstanding Maturity Date Description
Warrants and rights outstanding maturity date description.
Weighted Average Grant Date Fair Value Outstanding, Vested
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value
Local Phone Number
Local Phone Number
Sale of Stock [Axis]
Sale of Stock
Two Thousand And Nineteen Equity Incentive Plan [Member] and Two Thousand And Twenty Three Equity Inducement Plan
2019 Plan and 2023 Plan
2019 equity incentive plan.
Weighted Average Exercise Price, Exercisable as of December 31, 2023
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Exercise Price
Income Tax.
Income Tax Disclosure [Table]
Income Tax Disclosure [Table]
Current Federal Tax Expense (Benefit)
Federal
Federal
Other risks and uncertainties.
Other Risks And Uncertainties Policy [Text Block]
Other Risks and Uncertainties
Research Tax Credit Carryforward [Member]
Research and Development Credit Carryforwards
Leerink Partners LLC and Cantor Fitzgerald & Co
Leerink Partners LLC And Cantor Fitzgerald And Co [Member]
Leerink partners LLC and cantor fitzgerald & Co.
Restricted Cash, Current
Restricted cash
Share-Based Payment Arrangement, Employee [Member]
Employee
Statement of Cash Flows [Abstract]
Comprehensive Income, Policy [Policy Text Block]
Comprehensive Loss
Schedule of effective income tax rate of company and subsidiaries.
Schedule Of Effective Income Tax Rate Of Company And Subsidiaries Table [Text Block]
Summary of Statutory Tax Rates Applicable to Income of Company and Subsidiaries
Asset transfer and license agreements initial nonrefundable upfront payment.
Asset Transfer And License Agreement Initial Nonrefundable Upfront Payment
Nonrefundable upfront payment
Earliest Tax Year
Earliest Tax Year [Member]
Warrants Term Loan
Warrant Term Loan One [Member]
Warrant term loan one member.
Income Tax Authority [Domain]
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Accumulated other comprehensive income (loss)
Accumulated Other Comprehensive Income (Loss), Net of Tax
Accumulated Other Comprehensive Income (Loss), Net of Tax, Total
Property, Plant and Equipment, Policy [Policy Text Block]
Property and Equipment, Net
Document Annual Report
Document Annual Report
Common Stock, Par or Stated Value Per Share
Common stock, par value
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition
Unrecognized weighted average period
Long-Lived Tangible Asset [Axis]
Long-Lived Tangible Asset
Tranche Three
Tranche Three1 [Member]
Tranche three1 member.
Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table]
Schedule Of Share Based Compensation Arrangements By Share Based Payment Award [Table]
Maximum [Member]
Maximum
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]
Organization and Basis of Presentation
Summary of Reconciliation of Beginning and Ending Amount of Gross Unrecognized Tax Benefits
Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block]
APIC, Share-Based Payment Arrangement, Increase for Cost Recognition
Stock-based compensation
APIC, Share-Based Payment Arrangement, Increase for Cost Recognition, Total
Plus accumulated accretion of final payment fee
Debt Instrument, Periodic Payment Terms, Balloon Payment to be Paid
Fair Value, Recurring and Nonrecurring [Table]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Table]
Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect
Net change in cash and cash equivalents, and restricted cash
Payables and Accruals [Abstract]
General and Administrative Expense [Member]
General and Administrative
Research and development expense prepaid current.
Prepaid Research And Development Current
Prepaid research and development
Noncash Investing and Financing Items [Abstract]
Supplemental disclosures of noncash information:
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures in Period
Cancelled shares
Cancelled and forfeited
Document Financial Statement Error Correction [Flag]
CALIFORNIA
California
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]
Schedule of Outstanding Potentially Dilutive Securities Excluded From Calculation of Diluted Net Loss
Share based compensation arrangement by share based payment award remaining options vesting period.
Share Based Compensation Arrangement By Share Based Payment Award Remaining Options Vesting Period
Remaining option vesting period
City Area Code
City Area Code
Research and Development Arrangement, Contract to Perform for Others, Type [Axis]
Research and Development Arrangement, Contract to Perform for Others, Type
Net Cash Provided by (Used in) Operating Activities [Abstract]
Cash flows from operating activities:
Issuance of common stock upon exercise of warrants
Stock Issued During Period Shares Warrants Exercised
Stock Issued During Period Shares Warrants Exercised.
Operating Leases, Future Minimum Payments Due
Total future minimum annual payments
Present value of operating lease liability
Warrants To Purchase Common Stock
Warrants To Purchase Common Stock Policy [Text Block]
Warrants to purchase common stock.
Pre-funded Warrants
Pre Funded Warrants [Member]
Pre-funded warrants.
General and Administrative Expense
General and administrative
General and Administrative Expense, Total
Weighted Average Number of Shares Outstanding, Basic, Total
Weighted Average Number of Shares Outstanding, Basic
Weighted-average shares used to compute net loss per share, basic
Prepaid Taxes
Prepaid taxes
Research and Development Arrangement, Contract to Perform for Others, Type [Domain]
Research and Development Arrangement, Contract to Perform for Others, Type
Employee Stock [Member]
ESPP Purchases
Employee Stock Purchase Plan
Net Cash Provided by (Used in) Financing Activities [Abstract]
Cash flows from financing activities:
Research and Development Expense, Policy [Policy Text Block]
Research and Development Expenses
Loss on extinguishment of debt
Loss on extinguishment of debt
Loss on extinguishment
Gain (Loss) on Extinguishment of Debt
Gain (Loss) on Extinguishment of Debt, Total
Statement [Table]
Statement [Table]
Share-Based Payment Arrangement, Option, Activity [Table Text Block]
Summary of Stock Option Activity
Summary of Estimated Weighted-Average Grant Date Fair Value of Options Granted Using Black-Scholes Option-Pricing Model
Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]
Issuance of common stock upon cashless exercise of warrants, shares
Stock Issued During Period Shares Cashless Exercise Of Warrants
Stock Issued During Period Shares Cashless Exercise Of Warrants.
Document Fiscal Period Focus
Document Fiscal Period Focus
Lessee, Operating Lease, Liability, to be Paid
Total undiscounted future minimum lease payments
2025
Lessee, Operating Lease, Liability, to be Paid, Year Two
Accrued Professional Fees, Current
Accrued professional and legal fees
Statement [Line Items]
Statement [Line Items]
Two thousand and twenty one loan agreement.
Two Thousand and Twenty One Loan Agreement [Member]
2021 Loan Agreement
Operating lease liabilities
Deferred tax assets lease liability.
Deferred Tax Assets Lease Liability
Executive compensation limitation
Effective Income Tax Rate Reconciliation Executive Compensation Limit Amount
Effective income tax rate reconciliation executive compensation limit amount.
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount
Antidilutive common stock equivalents excluded from calculation of diluted net loss per share
Warrants to Purchase Common Stock Outstanding
Warrant [Member]
Warrants
Entity Incorporation, Date of Incorporation
Date of incorporation
Repayment of term loan
Repayments of Other Long-Term Debt
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]
Summary of Components of Deferred Tax Assets
Number of shares issuable under share-based payment arrangement.
Number Of Shares Issuable Under Share Based Payment Arrangement
Number of common shares issuable under the plan (in shares)
Common Stock [Member]
Common Stock
Change in accounting principle, accounting standards update, early adopted [true false]
Change in Accounting Principle, Accounting Standards Update, Early Adoption [true false]
Debt Instrument [Line Items]
Debt Instrument [Line Items]
Warrants and Rights Outstanding, Maturity Date
Warrant expiration date
Cash and Cash Equivalents, at Carrying Value
Cash and cash equivalents
Cash and Cash Equivalents, at Carrying Value, Total
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]
Summary of Stock-Based Compensation
Measurement Input, Risk Free Interest Rate [Member]
Measurement Input, Risk Free Interest Rate
Aggregate Intrinsic Value, Exercisable as of December 31, 2023
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Intrinsic Value
Net (accretion) amortization of investments in marketable securities
Accretion (Amortization) of Discounts and Premiums, Investments
Entity Common Stock, Shares Outstanding
Entity Common Stock, Shares Outstanding
Teva agreement.
Teva Agreement [Member]
Teva Agreements
Antidilutive Securities, Name [Domain]
Antidilutive Securities, Name
Cover
Cover [Abstract]
Number of prefunded warrants issued during period
Number Of Prefunded Warrants Issued During Period
Number of prefunded warrants issued during period.
Current Income Tax Expense (Benefit), Continuing Operations [Abstract]
Current:
Document Fiscal Year Focus
Document Fiscal Year Focus
Warrants expiration month and year
Warrants and Rights Outstanding Maturity Month and Year
Warrants and rights outstanding maturity month and year.
Sale of Stock [Domain]
Sale of Stock
Warrants Term Loan
Warrant Term Loan Two [Member]
Warrant term loan two.
Share-Based Payment Arrangement [Policy Text Block]
Stock-Based Compensation
Weighted Average Grant Date Fair Value Outstanding, Granted
Weighted average grant date fair value
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value
Proceeds, Issuance of Shares, Share-Based Payment Arrangement, Including Option Exercised
Proceeds, Issuance of Shares, Share-Based Payment Arrangement, Including Option Exercised, Total
Proceeds from issuance of common stock upon exercise of stock options
Rsus And Psus Outstanding
RSUs and PSUs outstanding [Member]
RSUs and PSUs outstanding member.
Security Exchange Name
Security Exchange Name
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period
Expiration period
Valuation Technique, Option Pricing Model [Member]
Valuation Technique, Option Pricing Model
Domestic Tax Authority [Member]
Federal
Recently Adopted Accounting Standards
New Accounting Pronouncements, Policy [Policy Text Block]
Asset transfer and license agreement termination period notice of failure.
Asset Transfer And License Agreement Termination Period Notice Of Failure
Asset transfer and license agreement, termination period notice of breach
Preferred Stock, Shares Issued
Preferred stock, shares issued
Authorized shares of preferred stock
Preferred Stock, Shares Authorized
Preferred stock, shares authorized
Current State and Local Tax Expense (Benefit)
State
State
Right-of-use assets obtained in exchange for new operating lease liabilities
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability
Agency discount securities.
Agency Discount Securities [Member]
Agency discount securities
Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price
Weighted Average Exercise Price, Cancelled and forfeited
Financial Instrument [Axis]
Class of Warrant or Right [Table]
Stock Issued During Period, Value, Stock Options Exercised
Issuance of common stock upon exercise of stock options
Entity Emerging Growth Company
Entity Emerging Growth Company
RSUs and PSUs Outstanding
Restricted Stock Units And Performance Shares Units Outstanding[Member]
Restricted stock units and performance shares units outstanding.
Intrinsic value of stock options exercised
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period, Intrinsic Value
Amendment Flag
Amendment Flag
Credit carryforwards
Tax Credit Carryforward, Amount
Schedule of Accrued Liabilities [Table Text Block]
Schedule of Accrued Expenses
Marketable securities
Marketable Securities, Current
Obligation to payment upon maximum achievement of certain clinical and commercial milestones.
Obligation To Payment Upon Maximum Achievement Of Certain Clinical And Commercial Milestones
Payment upon achievement of certain clinical and commercial milestones
IPO [Member]
Public Offerings
Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Loss, before Tax
Short-term investments, Gross Unrealized Holding Losses
Accounting Standards Update [Domain]
Warrant contingently exercisable upon funding of each subsequent term loan
Contingent Warrants Excerciable Upon Term Loan
Contingent warrants excerciable upon term loan.
Basis of Accounting, Policy [Policy Text Block]
Basis of Presentation
Line of credit facility, expired unused
Line Of Credit Facility Expired Unused Borrowing Amount
Line of credit facility expired unused borrowing amount.
Term b loan facility.
Term B Loan Facility [Member]
Term B Loan Facility
Proceeds from Lines of Credit, Total
Proceeds from Lines of Credit
Line of credit facility fully drawn amount
Israel Tax Authority
Israel Tax Authority [Member]
Variable Rate [Domain]
Variable Rate
Tax Period [Domain]
Entity File Number
Entity File Number
Loan and security agreement.
Loan And Security Agreement [Member]
Loan Agreement
2023 Plan
Two Thousand And Twenty Three Inducement Plan [Member]
2023 inducement plan.
Line of Credit Facility, Expiration Date
Credit facility maturity date
Deferred Tax Assets, Gross
Deferred tax assets
Gross deferred tax assets
Equity Incentive Plan
Equity Incentive Plan [Member]
Equity incentive plan member.
Long-Term Debt, Excluding Current Maturities
Term loan, non-current, net
Term loan, non-current, net
Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents
Cash and cash equivalents, and restricted cash at end of period
Cash and cash equivalents, and restricted cash at beginning of period
Total cash and cash equivalents, and restricted cash
Balance Sheet Related Disclosures [Abstract]
Cash Equivalents [Member]
Cash equivalents
Debt Instrument, Measurement Input
Fair measurement input
Share-Based Payment Arrangement [Abstract]
Twenty twenty three loan agreement.
Twenty Twenty Three Loan Agreement [Member]
2023 Loan Agreement
Asset transfer and license agreement termination notice period if bankruptcy petition filed.
Asset Transfer And License Agreement Termination Notice Period If Bankruptcy Petition Filed
Asset transfer and license agreement termination notice period if bankruptcy petition filed
Accounts Payable, Current
Accounts payable
Accounts Payable, Current, Total
Debt Instrument [Axis]
Debt Instrument
Proceeds from term loan facility, net of issuance costs
Proceeds from Issuance of Other Long-Term Debt
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value, Beginning Balance
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value
Weighted Average Grant Date Fair Value Outstanding, Beginning Balance
Weighted Average Grant Date Fair Value Outstanding, Ending Balance
Deferred Tax Assets, Valuation Allowance
Deferred tax assets, valuation allowance
Less: valuation allowance
Operating Expenses
Total operating expenses
2024
Long-Term Debt, Maturity, Year One
Warrants To Purchase Common Stock
Warrants To Purchase Common Stock [Member]
Warrants to purchase common stock member.
Auditor Location
Auditor Location
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Term
Expected term (years)
Issuance of common stock and warrants, shares
Stock And Warrants Issued During Period Shares New Issues
Stock And Warrants Issued During Period Shares New Issues.
Entity Address, Address Line Two
Entity Address Address Line Two
Preferred stock, $0.001 par value; 10,000,000 shares authorized, none issued and outstanding
Preferred Stock, Value, Issued
Entity Small Business
Entity Small Business
Entity Shell Company
Entity Shell Company
Number of Operating Segments
Number of operating segments
Summary of RSU and PSU Activity
Schedule of Nonvested Share Activity [Table Text Block]
Title of Individual [Axis]
Title of Individual
Class of Warrant or Right, Exercise Price of Warrants or Rights
Warrant exercise price
Class of Warrant or Right [Domain]
Share-Based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount
Total Unrecognised expense
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Weighted Average Grant Date Fair Value
Issuance of common stock upon vesting of restricted stock units, net of tax withholding for net share settlement, shares
Restricted Stock, Shares Issued Net of Shares for Tax Withholdings
Earnings Per Share [Text Block]
Net Loss Per Share
Commercial Paper [Member]
Commercial Paper
Entity Address, Address Line One
Entity Address, Address Line One
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Antidilutive Securities [Axis]
Antidilutive Securities
Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.
Summary Of Significant Accounting Policies [Line Items]
Summary Of Significant Accounting Policies [Line Items]
Measurement Input, Price Volatility [Member]
Measurement Input, Price Volatility
Supplemental Balance Sheet Disclosures [Text Block]
Consolidated Balance Sheet Components
Debt Instrument, Interest Rate During Period
Debt instrument, interest rate
Commitment fee percentage
Line of Credit Facility, Commitment Fee Percentage
Subsequent Event Type [Domain]
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Minimum
Risk-free interest rate, minimum
Income Statement Location [Axis]
Income Statement Location
2026
Long-Term Debt, Maturity, Year Three
US Government Agencies Short-Term Debt Securities [Member]
U.S. government bonds
Issuance of common stock upon vesting of restricted stock units, net of tax withholding for net share settlement
Restricted Stock, Value, Shares Issued Net of Tax Withholdings
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Maximum
Risk-free interest rate, maximum
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Accrued Liabilities
Accrued expenses
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Dividend Rate
Expected dividend
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest
Net loss
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest, Total
UAB Eighty Nine Bio Lithuania.
U A B Eighty Nine Bio Lithuania [Member]
UAB 89bio Lithuania
Fair Value, Inputs, Level 2 [Member]
Level 2
Total principal outstanding
Long-Term Debt, Gross
Outstanding principal amount
Title of 12(b) Security
Title of 12(b) Security
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount
State income taxes, net of federal benefit
Prime Rate [Member]
Prime Rate
Term A loan facility.
Term A Loan Facility [Member]
Term A Loan Facility
Income Tax Authority, Name [Axis]
Accounting Standards Update [Axis]
Maximum value of common stock to be issued under agreement
Maximum Value of Common Stock To Be Issued Under Agreement
Maximum value of common stock to be issued under agreement.
Net Cash Provided by (Used in) Investing Activities [Abstract]
Cash flows from investing activities:
State and Local Jurisdiction [Member]
State
Segment Reporting, Policy [Policy Text Block]
Segment Reporting
Long-Lived Tangible Asset [Domain]
Long-Lived Tangible Asset
Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block]
Cash and Cash Equivalents
Share-Based Compensation Arrangement by Share-Based Payment Award, Terms of Award
Terms of award
Weighted Average Remaining Contractual Term (In years), Exercisable as of December 31, 2023
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term
Common Stock, Shares, Outstanding
Common stock, shares outstanding
Common Stock, Shares, Outstanding, Beginning Balance
Common Stock, Shares, Outstanding, Ending Balance
Share-Based Payment Arrangement [Text Block]
Stock-Based Compensation
Weighted Average Grant Date Fair Value Outstanding, Canceled
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value
Proceeds from issuance of common stock upon exercise of common stock warrants
Proceeds from Warrant Exercises
Tax Credit Carryforward [Axis]
Lessee, Operating Lease, Discount Rate
Incremental borrowing rate used to determine operating lease liability
Income Statement Location [Domain]
Income Statement Location
Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Grants in Period, Weighted Average Exercise Price
Issuance of common stock, weighted average price per share
Weighted Average Exercise Price, Granted
Document Type
Document Type
ASU 2020-06
Accounting Standards Update 2020-06 [Member]
Other Prepaid Expense, Current
Prepaid other
Warrants Public Offerings
Warrant Public Offerings [Member]
Warrant public offerings member.
Cash paid for amounts included in the measurement of lease liabilities
Operating Lease, Payments, Use
Cash paid for operating leases
Debt instrument, final payment fee
Debt Instrument, Fee Amount
Net Cash Provided by (Used in) Investing Activities
Net cash (used in) provided by investing activities
Canceled
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period
Net Cash Provided by (Used in) Financing Activities
Net cash provided by financing activities
Deferred tax assets
Deferred Income Taxes and Tax Credits
Deferred Income Taxes and Tax Credits, Total
Entity Filer Category
Entity Filer Category
Deferred Tax Assets, Tax Credit Carryforwards, Research
State research and development credit carryforwards
Balance Sheet Location [Domain]
Balance Sheet Location
Increase (Decrease) in Accrued Liabilities
Accrued expenses
Increase (Decrease) in Accrued Liabilities, Total
Income Tax Authority, Name [Domain]
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax
Foreign currency translation adjustments
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Total
Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block]
Summary of Loss from Operations Before Taxes on Income
Variable Rate [Axis]
Variable Rate
Purchases of marketable securities
Payments to Acquire Marketable Securities
Liabilities
Total liabilities
Equity, Attributable to Parent
Ending balance
Beginning balance
Total stockholders’ equity
Consolidated Entities [Axis]
Consolidated Entities
Documents Incorporated by Reference [Text Block]
Documents Incorporated by Reference
Net loss
Net loss
Interest Expense, Total
Interest Expense
Interest expense
Interest expense
Marketable Securities
Marketable securities [Member]
Marketable securities.
Office space
Area of Land
Operating lease expiration month and year
Operating Lease Expiration Month And Year
Operating lease expiration month and year.
Corporate Debt Securities [Member]
Corporate debt securities
Fair Value Measurement, Policy [Policy Text Block]
Fair Value Measurements
Information related to various accounting policies of the entity.
Summary Of Significant Accounting Policies [Table]
Summary Of Significant Accounting Policies [Table]
Statement of Financial Position [Abstract]
Weighted Average Number of Shares Outstanding, Diluted, Total
Weighted Average Number of Shares Outstanding, Diluted
Weighted-average shares used to compute net loss per share, diluted
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]
Summary of Reconciliation of Income Tax (Expense) Benefit Statutory Tax Rate to Effective Tax Rate
Operating Lease, Right-of-Use Asset, Periodic Reduction
Non-cash operating lease expense
Prefunded warrants price per share
Prefunded Warrants Price Per Share
Prefunded warrants price per share.
Effective Income Tax Rate Reconciliation, Percent
Effective income tax rate
Effective Income Tax Rate Reconciliation, Percent, Total
Deferred Federal Income Tax Expense (Benefit)
Federal
Federal
ISRAEL
Israel
Conversion Feature Related To Outstanding Term Loan
Conversion Feature Related To Outstanding Term Loan [Member]
Conversion feature related to outstanding term loan.
Debt Securities, Available-for-Sale, Amortized Cost
Short-term investments, Amortized Cost
Share-Based Compensation Arrangement by Share-Based Payment Award, Purchase Price of Common Stock, Percent
Percent of purchase shares of common stock
Use of Estimates, Policy [Policy Text Block]
Use of Estimates
Income Tax Disclosure [Text Block]
Income Taxes
Warrant Forfeited
Contingent Warrant Forfeited
Contingent warrant forfeited.
Percentage of ownership prior to issuance
Sale Of Stock Percentage Of Beneficial Ownership Limitation Before Transaction
Sale of stock percentage of beneficial ownership limitation before transaction.
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price
Weighted Average Exercise Price Outstanding, Ending Balance
Weighted Average Exercise Price Outstanding, Beginning Balance
Debt Security, Government, Non-US [Member]
Non-US debt securities
Schedule of Weighted-average Shares Outstanding Used to Calculate Basic and Diluted Net Loss Per Share
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
Issuance of common stock and warrants
Stock And Warrants Issued During Period Value New Issues
Stock And Warrants Issued During Period Value New Issues.
Valuation Approach and Technique [Axis]
Valuation Approach and Technique
Leasehold Improvements [Member]
Leasehold Improvements
Income Tax Authority [Axis]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Contingent warrants
Contingent Warrants
Contingent warrants.
Fair Value Disclosures [Abstract]
Total current
Current Income Tax Expense (Benefit)
Total
Fair Value Hierarchy and NAV [Axis]
Fair Value Hierarchy and NAV
Measurement Frequency [Domain]
Measurement Frequency
Payments to Acquire Property, Plant, and Equipment
Purchases of property and equipment
Payments to Acquire Property, Plant, and Equipment, Total
Reclassification, Comparability Adjustment [Policy Text Block]
Reclassification
Vested
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period
Stock Issued During Period, Shares, New Issues
Issuance of common stock, shares
Shares issued and sold
Employee-related Liabilities, Current
Accrued employee and related expenses
Employee-related Liabilities, Current, Total
Issuance of common stock warrants related to term loan facility
Issuance of common stock warrants related to term loan facility.
Issuance Of Common Stock Warrants Related To Term Loan Facilities
Operating leases, rent expense
Operating Lease, Expense
Deferred tax assets tax credit carryforwards research, federal.
Deferred Tax Assets Tax Credit Carryforwards Research Federal
Federal research and development credit carryforwards
Other comprehensive income (loss):
Other Comprehensive Income (Loss), Tax [Abstract]
Class of Warrant or Right [Axis]
Tranche Four
Tranche four.
Tranche Four [Member]
Income Tax Disclosure [Abstract]
Tax Credit Carryforward, Name [Domain]
Percentage of fee on loan.
Percentage Of Fee On Loan
Percentage of fee on loan
Accumulated tax loss carryforward
Operating Loss Carryforwards
Accrued research and development expenses.
Accrued Research And Development Expenses Policy [Text Block]
Accrued Research and Development Expenses