75000 - Document - Document and Entity Information
link:presentationLink
link:calculationLink
link:definitionLink
75010 - Statement - Balance Sheets
link:presentationLink
link:calculationLink
link:definitionLink
75020 - Statement - Balance Sheets (unaudited) (Parenthetical)
link:presentationLink
link:calculationLink
link:definitionLink
75030 - Statement - Statements of Operations and Comprehensive Loss (unaudited)
link:presentationLink
link:calculationLink
link:definitionLink
75040 - Statement - Statements of Equity (unaudited)
link:presentationLink
link:calculationLink
link:definitionLink
75050 - Statement - Statements of Equity (unaudited) (Parenthetical)
link:presentationLink
link:calculationLink
link:definitionLink
75060 - Statement - Statements of Cash Flows (unaudited)
link:presentationLink
link:calculationLink
link:definitionLink
995455 - Disclosure - Description of the Business
link:presentationLink
link:calculationLink
link:definitionLink
995465 - Disclosure - Summary of Significant Accounting Policies
link:presentationLink
link:calculationLink
link:definitionLink
995475 - Disclosure - Balance Sheet Accounts and Supplemental Disclosures
link:presentationLink
link:calculationLink
link:definitionLink
995485 - Disclosure - Collaborative Research and Development Agreements
link:presentationLink
link:calculationLink
link:definitionLink
995495 - Disclosure - Related Party Transactions
link:presentationLink
link:calculationLink
link:definitionLink
995505 - Disclosure - Fair Value Measurements and Available for Sale Investments
link:presentationLink
link:calculationLink
link:definitionLink
995515 - Disclosure - Stockholders' Equity
link:presentationLink
link:calculationLink
link:definitionLink
995525 - Disclosure - Equity Incentive Plan
link:presentationLink
link:calculationLink
link:definitionLink
995535 - Disclosure - Employee Benefit Plan
link:presentationLink
link:calculationLink
link:definitionLink
995545 - Disclosure - Commitments and Contingencies
link:presentationLink
link:calculationLink
link:definitionLink
995555 - Disclosure - Segment Reporting
link:presentationLink
link:calculationLink
link:definitionLink
995565 - Disclosure - Income Taxes
link:presentationLink
link:calculationLink
link:definitionLink
995575 - Disclosure - Subsequent Events
link:presentationLink
link:calculationLink
link:definitionLink
995585 - Disclosure - Summary of Significant Accounting Policies (Policies)
link:presentationLink
link:calculationLink
link:definitionLink
995595 - Disclosure - Summary of Significant Accounting Policies (Tables)
link:presentationLink
link:calculationLink
link:definitionLink
995605 - Disclosure - Balance Sheet Accounts and Supplemental Disclosures (Tables)
link:presentationLink
link:calculationLink
link:definitionLink
995615 - Disclosure - Collaborative Research and Development Agreements (Tables)
link:presentationLink
link:calculationLink
link:definitionLink
995625 - Disclosure - Related Party Transactions (Tables)
link:presentationLink
link:calculationLink
link:definitionLink
995635 - Disclosure - Fair Value Measurements and Available for Sale Investments (Tables)
link:presentationLink
link:calculationLink
link:definitionLink
995645 - Disclosure - Equity Compensation Plan (Tables)
link:presentationLink
link:calculationLink
link:definitionLink
995655 - Disclosure - Commitments and Contingencies (Tables)
link:presentationLink
link:calculationLink
link:definitionLink
995665 - Disclosure - Segment Reporting (Tables)
link:presentationLink
link:calculationLink
link:definitionLink
995675 - Disclosure - Income Taxes (Tables)
link:presentationLink
link:calculationLink
link:definitionLink
995685 - Disclosure - Description of the Business (Additional Information) (Details)
link:presentationLink
link:calculationLink
link:definitionLink
995695 - Disclosure - Summary of Significant Accounting Policies (Additional Information) (Details)
link:presentationLink
link:calculationLink
link:definitionLink
995705 - Disclosure - Summary of Significant Accounting Policies - Schedule of Calculation of Diluted Net Loss Per Share (Details)
link:presentationLink
link:calculationLink
link:definitionLink
995715 - Disclosure - Balance Sheet Accounts and Supplemental Disclosures - Summary Of Property and Equipment (Details)
link:presentationLink
link:calculationLink
link:definitionLink
995725 - Disclosure - Balance Sheet Accounts and Supplemental Disclosures - Summary Of Accrued Expenses (Details)
link:presentationLink
link:calculationLink
link:definitionLink
995735 - Disclosure - Balance Sheet Accounts and Supplemental Disclosures - Summary Of Prepaid Expenses and other Current (Details)
link:presentationLink
link:calculationLink
link:definitionLink
995745 - Disclosure - Collaborative Research and Development Agreements (Additional Information) (Details)
link:presentationLink
link:calculationLink
link:definitionLink
995755 - Disclosure - Collaborative Research and Development Agreements - Schedule of Milestones Payable (Details)
link:presentationLink
link:calculationLink
link:definitionLink
995765 - Disclosure - Collaborative Research and Development Agreements - Schedule of Milestones Payable (Parenthetical) (Details)
link:presentationLink
link:calculationLink
link:definitionLink
995775 - Disclosure - Related Party Transactions - Schedule of Allocations for Statements of Operations (Details)
link:presentationLink
link:calculationLink
link:definitionLink
995785 - Disclosure - Related Party Transactions - Schedule of Reconciliation Amount Presented on the Combined Statements of Cash Flows (Details)
link:presentationLink
link:calculationLink
link:definitionLink
995795 - Disclosure - Fair Value Measurements and Available for Sale Investments (Additional Information) (Details)
link:presentationLink
link:calculationLink
link:definitionLink
995805 - Disclosure - Fair Value Measurements and Available for Sale Investments - Summary of Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details)
link:presentationLink
link:calculationLink
link:definitionLink
995815 - Disclosure - Fair Value Measurements and Available for Sale Investments - Schedule of Aggregate market value, cost basis, and gross unrealized gains and losses of available-for-sale investments (Details)
link:presentationLink
link:calculationLink
link:definitionLink
995825 - Disclosure - Fair Value Measurements and Available for Sale Investments - Schedule of Aggregate market value, cost basis, and gross unrealized gains and losses of available-for-sale investments (Parenthetical) (Details)
link:presentationLink
link:calculationLink
link:definitionLink
995835 - Disclosure - Stockholders' Equity (Additional Information) (Details)
link:presentationLink
link:calculationLink
link:definitionLink
995845 - Disclosure - Equity Incentive Plan (Additional Information) (Details)
link:presentationLink
link:calculationLink
link:definitionLink
995855 - Disclosure - Equity Incentive Plan - Summary of Stock Option Activity (Details)
link:presentationLink
link:calculationLink
link:definitionLink
995865 - Disclosure - Equity Incentive Plans - Summary of Stock Option Activity (Details) - Stock Options (Parenthetical) (Details)
link:presentationLink
link:calculationLink
link:definitionLink
995875 - Disclosure - Equity Incentive Plan - Schedule of fair value of closing price of common stock on the date of the grant (Details)
link:presentationLink
link:calculationLink
link:definitionLink
995885 - Disclosure - Equity Incentive Plan - Summary of Fair Values of the Options Granted (Details)
link:presentationLink
link:calculationLink
link:definitionLink
995895 - Disclosure - Equity Incentive Plan - Summary of Estimated Fair Values of Stock Option Awards Granted (Details)
link:presentationLink
link:calculationLink
link:definitionLink
995905 - Disclosure - Equity Incentive Plan - Summary of Stock Based Compensation Expense Regarding its Employees and Nonemployees (Details)
link:presentationLink
link:calculationLink
link:definitionLink
995905 - Disclosure - Equity Incentive Plan - Summary of Stock Based Compensation Expense Regarding its Employees and Nonemployees (Details) [Default]
link:presentationLink
link:calculationLink
link:definitionLink
995915 - Disclosure - Employee Benefit Plan (Additional Information) (Details)
link:presentationLink
link:calculationLink
link:definitionLink
995925 - Disclosure - Commitments and Contingencies - Summary Of Non-Cancellable Office Lease Costs (Details)
link:presentationLink
link:calculationLink
link:definitionLink
995935 - Disclosure - Commitments and Contingencies - Summary Of Future Minimum Annual Obligations Operating Lease Liabilities (Details)
link:presentationLink
link:calculationLink
link:definitionLink
995945 - Disclosure - Commitments and Contingencies - Summary Of Future Minimum Annual Obligations Operating Lease Liabilities (Details) 2
link:presentationLink
link:calculationLink
link:definitionLink
995955 - Disclosure - Commitments and Contingencies (Additional Information) (Details)
link:presentationLink
link:calculationLink
link:definitionLink
995965 - Disclosure - Segment Reporting (Additional Information) (Details)
link:presentationLink
link:calculationLink
link:definitionLink
995975 - Disclosure - Segment Reporting - Summary of Segment Loss and Significant Expenses (Details)
link:presentationLink
link:calculationLink
link:definitionLink
995985 - Disclosure - Income Taxes - Schedule of Components of Loss Before Income Taxes (Details)
link:presentationLink
link:calculationLink
link:definitionLink
995995 - Disclosure - Income Taxes - Schedule of Components of Deferred Tax Assets and Liabilities (Details)
link:presentationLink
link:calculationLink
link:definitionLink
996005 - Disclosure - Income Taxes (Additional Information) (Details)
link:presentationLink
link:calculationLink
link:definitionLink
996015 - Disclosure - Income Taxes - Schedule of Reconciliation of the Expected Statutory Federal Income Tax Provision (Details)
link:presentationLink
link:calculationLink
link:definitionLink
996025 - Disclosure - Income Taxes - Schedule of Reconciliation of Unrecognized Tax Benefits (Details)
link:presentationLink
link:calculationLink
link:definitionLink
996035 - Disclosure - Subsequent Events (Additional Information) (Details)
link:presentationLink
link:calculationLink
link:definitionLink
Related Party Transaction [Table]
Common Stock, Capital Shares Reserved for Future Issuance
Shares Reserved For Future Issuance
Unrealized loss position
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss
12 Months or Greater, Gross Unrealized Losses
Income Tax Equity Compensation
Income Tax Equity Compensation
Equity compensation
Schedule of Accrued Liabilities [Table Text Block]
Schedule Of Accrued Expenses
Total
Operating Lease, Liability
Lease liability
Total
Aggregate Intrinsic Value, Outstanding
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Nonvested
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total
Unrecognized compensation cost
Two Thousand Twenty Six Equity Incentive Plan [Member]
Two Thousand Twenty Six Equity Incentive Plan [Member]
2026 Equity Incentive Plan
Amortization of right-of-use assets - operating
Operating Lease, Right-of-Use Asset, Periodic Reduction
Weighted-average number of shares outstanding, Diluted
Weighted Average Number of Shares Outstanding, Diluted
Weighted Average Number of Shares Outstanding, Diluted, Total
Asset Acquisition [Axis]
APIC, Share-Based Payment Arrangement, Increase for Cost Recognition
APIC, Share-Based Payment Arrangement, Increase for Cost Recognition, Total
Stock-based compensation
Lessor, Operating Lease, Option to Extend
Extend Lease Term
Minimum [Member]
Minimum [Member]
Private Placement
Private Placement [Member]
Preferred stock, shares outstanding
Preferred Stock, Shares Outstanding
Preferred Stock, Shares Outstanding, Ending Balance
Preferred Stock, Shares Outstanding, Beginning Balance
Fair Value, Recurring
Fair Value, Recurring [Member]
Common Stock, Shares, Issued
Share issued, common stock
Common stock, shares issued
Segment Reporting [Line Items]
Income Tax Expense (Benefit)
Income tax expense
Provision for income taxes
Counterparty Name [Domain]
Related Party Transaction [Line Items]
Restricted Stock Units (RSUs) [Member]
Restricted Stock Unit
Deferred Tax Assets:
Deferred Tax Assets, Net [Abstract]
Deferred Tax Liabilities, Net
Deferred Tax Liabilities, Net, Total
Net deferred tax assets
Operating Segments [Member]
Operating Segments [Member]
Debt Securities, Available-for-Sale, Amortized Cost
Debt Securities, Available-for-Sale, Amortized Cost, Total
Amortized Cost
Preclinical and other unallocated costs [Member]
Preclinical and other unallocated costs [Member]
Preclinical and other unallocated costs
Subsequent Event Type [Domain]
Defined Benefit Plan, Benefit Obligation
Defined Benefit Plan, Benefit Obligation, Ending Balance
Defined Benefit Plan, Benefit Obligation, Beginning Balance
Defined Benefit Plan Contribution
Lessee, Operating Lease, Liability, Undiscounted Excess Amount
Less: imputed interest
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Outstanding, Weighted-Average Remaining Contractual Term
Weighted-Average Remaining Contractual Term in years
Prepaid clinical development
Prepaid clinical development
Prepaid clinical development
State income taxes, net of federal benefit
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount
Nonoperating Income (Expense)
Other income (expense), net
Total other income (expense), net
Debt Securities, Available-for-Sale, Noncurrent
Long-term investments
General and Administrative Expense
General and administrative
Total G&A
Income Tax Jurisdiction [Axis]
Non-cash transfer of lease liabilities to AnaptysBio
Noncash or Part Noncash Acquisition, Value of Liabilities Assumed
Noncash or Part Noncash Acquisition, Value of Liabilities Assumed, Total
Non-cash transfer of lease liabilities to AnaptysBio
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period
Forfeitures and cancellations
Lease, Cost [Table Text Block]
Schedule Of Non-Cancellable Office Lease Costs
Schedule of Available-for-sale Investments
Schedule of Available-for-Sale Securities Reconciliation [Table Text Block]
Related and Nonrelated Parties [Domain]
Earnings Per Share, Basic
Earnings Per Share, Basic, Total
Net loss per common share, Baisc
Document Period End Date
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period
Stock options granted in term years
Purchases of property and equipment
Payments to Acquire Property, Plant, and Equipment
Payments to Acquire Property, Plant, and Equipment, Total
Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Grants in Period, Weighted Average Exercise Price
Weighted Average Exercise Price, Granted
Shares Reserved
Common Stock, Shares Authorized
Common stock, shares authorized
Statement of Stockholders' Equity [Abstract]
Other Prepaid Expense, Current
Total prepaid expenses and other current assets
Schedule Of Prepaid Expenses and Other Current Assets
Schedule Of Prepaid Expenses and Other Current Assets [Table Text Block]
Schedule of prepaid expenses and other current assets.
Prepaid expenses and other current assets
Prepaid Expense and Other Assets, Current
Foreign Currency Transactions and Translations Policy [Policy Text Block]
Functional Currency of Foreign Operations
Income (Loss) from Continuing Operations before Income Taxes, Domestic
Net loss before income taxes U.S.
Deferred Tax Liabilities, Gross
Total deferred tax liabilities
Total deferred tax liabilities
Total deferred tax liabilities
Total Internal R&D
Internal Expenses [Member]
Internal Expenses [Member]
Distributed shares
Distributed Shares
Distributed Shares
Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table]
Disaggregation of Revenue [Table]
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Intrinsic Value
Aggregate Intrinsic Value, Outstanding
Aggregate Intrinsic Value, Outstanding
Aggregate Intrinsic Value, Outstanding
Assets
Total assets
Lease space
Area of Land
Title of 12(b) Security
State Income Taxes Paid
State Income Taxes Paid
State income taxes paid
Preferred Stock, Value, Issued
Preferred stock $0.001 par value, 10,000 shares authorized and no shares outstanding at June 30, 2026
Performance Based Performance Stock Units [Member]
Performance Based Performance Stock Units [Member]
Performance-Based PSUs
Number of Shares Outstanding, Beginning Balance
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number
Number of Shares Outstanding, Ending Balance
Issue Of Sustitute Awards
Granted
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross
Title and Position [Domain]
Operating Lease, Payments
Cash paid for amounts included in the measurement of lease liabilities
Share-Based Payment Arrangement, Restricted Stock Unit, Activity [Table Text Block]
Summary of Restricted Stock Units Activity
Collaborative Arrangement and Arrangement Other than Collaborative [Table Text Block]
Schedule of Milestones Achieved
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions and Methodology [Abstract]
Disposal Group, Disposed of Other than by Sale, Not Discontinued Operation, Spinoff [Member]
Lessee, Operating Lease, Liability, to be Paid, Year One
2026
Issuance of common stock, net of transaction costs
Stock Issued During Period, Value, Transaction Costs
Stock Issued During Period, Value, Transaction Costs
Cash and Cash Equivalents [Domain]
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted-Average Remaining Contractual Term
Weighted-Average Remaining Contractual Term in years
ANB101 [Member]
ANB101 [Member]
ANB101
Nature of Operations [Text Block]
Description of the Business
Segment Reporting [Table Text Block]
Schedule of Segment Loss and Significant Expenses
Short Term and Long Term Investments [Policy Text Block]
Short Term and Long Term Investments [Policy Text Block]
Short-Term and Long-Term Investments
Increase (Decrease) in Operating Lease Liability
Operating lease liabilities
Payments to Acquire Debt Securities, Available-for-Sale
Purchase of investments
Equity, Attributable to Parent
Ending Balance
Beginning Balance
Total equity
Total stockholders' equity
Entity Address, Address Line Two
Other Assets, Noncurrent
Other long-term assets
Collaborative Arrangement and Arrangement Other than Collaborative [Domain]
Income Tax Disclosure [Text Block]
Income Taxes
Vanda Pharmaceuticals Inc. [Member]
Vanda Pharmaceuticals Inc. [Member]
Vanda Pharmaceuticals Inc
Stock-based compensation, Shares
Adjustments to Additional Paid in Capital, Share-Based Payment Arrangement, Increase for Cost Recognition, Shares
Adjustments to Additional Paid in Capital, Share-Based Payment Arrangement, Increase for Cost Recognition, Shares
State
Income Tax Jurisdiction, Domestic State and Local [Member]
Interest Income, Other
Interest income
Net Parent Investment
Net Parent Investment Payment
Net Parent Investment Payment
Net Parent Investment
Substitute Options [Member]
Substitute Options [Member]
Number of Reportable Segments
Number of reportable segment
Offering costs accrued
Accrued Offering Costs
Accrued Offering Costs
Basis of Accounting, Policy [Policy Text Block]
Basis of Presentation
Office Equipment [Member]
Office furniture and equipment
Effective Income Tax Rate Reconciliation [Table]
Accounts Receivable from Securitization
Receivable from option exercises
Stock, Class of Stock [Table]
Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain, before Tax
Gross Unrealized Gains
Spin-off distribution record date
Spin Off Distribution Record Date
Spin Off Distribution Record Date
Weighted Average Exercise Price, Release
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value
Proceeds from Stock Options Exercised
Proceeds from the issuance of common stock upon the exercise of stock options
Centessa Pharmaceuticals (UK) Limited (Centessa) [Member]
Centessa Pharmaceuticals (UK) Limited (Centessa) [Member]
Centessa Pharmaceuticals (UK) Limited (Centessa) [Member]
Statistical Measurement [Axis]
Share-Based Payment Arrangement [Policy Text Block]
Stock-based Compensation
Money Market Funds [Member]
Money Market Funds
Entity Interactive Data Current
Lessee, Operating Lease, Liability, to be Paid, Year Three
2028
Non Cash Transfer Of Assets And Liabilities
Non Cash Transfer Of Assets And Liabilities
Non-cash transfer of assets and liabilities
Non-cash transfer of assets and liabilities in connection with the spin-off
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Asset Acquisition, Consideration Transferred
Asset Acquisition, Consideration Transferred, Total
Total transaction
Share-Based Payment Arrangement, Cost by Plan [Table Text Block]
Schedule of Stock-Based Compensation Expense
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Remaining Contractual Term
Weighted average remaining contractual term, Expected to vesting
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Common Stock, Value, Issued
Common stock, $0.001 par value, 500,000,000 shares authorized and 35,390,679 shares issued and outstanding at June 30, 2026 and 100 shares authorized and no shares, issued or outstanding at December 31, 2025
Market Based Performance Stock Units [Member]
Market Based Performance Stock Units [Member]
Market-Based PSUs
Property, Plant, and Equipment [Policy Text Block]
Property and Equipment
Stock Awards [Member]
Stock Awards [Member]
Stock awards
Collaborative Arrangement [Member]
Collaborative Arrangement [Member]
Interest Costs Incurred
Interest Costs Incurred, Total
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]
Summary of Assets and Liabilities Measured at Fair Value on a Recurring Basis
Product and Service [Axis]
Accumulated deficit
Retained Earnings (Accumulated Deficit)
Retained Earnings (Accumulated Deficit), Total
Entity Bankruptcy Proceedings, Reporting Current
Fair Value, Inputs, Level 3
Fair Value, Inputs, Level 3 [Member]
Money market funds, Fair Value
Cash and Cash Equivalents, Fair Value Disclosure
Fair Value included in cash and cash equivalents
Operating Expenses
Total operating expenses
Disaggregation of Revenue [Line Items]
Share-based compensation award, vesting period
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period
Allocations of Corporate Expenses
Allocations of Corporate Expenses
Allocations of AnaptysBio, Inc.'s corporate expenses
Investment Company, Investment Income (Loss) Ratio
Percenatge of Net Operating Losses Genrate in NOL
Cash Equivalents [Member]
Less: accumulated depreciation and amortization
Property, Plant, and Equipment, Accumulated Depreciation, Depletion, and Amortization
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment, Ending Balance
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment, Beginning Balance
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment, Total
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures and Expirations in Period, Weighted Average Exercise Price
Weighted Average Exercise Price, Forfeitures and cancellations
Related Party Transactions [Abstract]
Operating Lease, Cost
Operating lease cost
Long-Lived Asset, Class [Axis]
License Agreement, Centessa Pharmaceuticals (UK) Limited [Member]
License Agreement, Centessa Pharmaceuticals (UK) Limited [Member]
License Agreement, Centessa Pharmaceuticals (UK) Limited [Member]
Centessa Agreement [Member]
Centessa Agreement [Member]
Business Combination, Separately Recognized Transaction [Axis]
Income Tax, Policy [Policy Text Block]
Income Taxes
Subsequent Events [Text Block]
Subsequent Events
Research And Development Expense Reversal Including Acquired In Process Cost
Research And Development Expense Reversal Including Acquired In Process Cost
Total Internal R&D
Fair Value Hierarchy and NAV [Axis]
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate
Expected volatility
Volatility of common stock
Property, Plant, and Equipment [Line Items]
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate
Risk-free interest rate
Agency Securities
Agency Securities [Member]
Employee Stocks Option [Member]
Employee Stocks Option [Member]
Debt Securities, Available-for-Sale
Total Fair Value
Total Fair Value
Prepaid Expense, Current [Abstract]
Current portion of operating lease liability
Operating Lease, Liability, Current
Amounts accrued for repurchase of common stock
Amounts Accrued For Repurchase Of Common Stock
Amounts Accrued For Repurchase Of Common Stock
Available For Sales Debt Securities Remaining Maturity
Available For Sales Debt Securities Remaining Maturity
Remaining maturity (in years)
Weighted Average Exercise Price, Ending Balance
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value
Weighted Average Exercise Price, Beginning Balance
Liabilities and Equity
Total liabilities and stockholders' equity
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Dividend Rate
Expected dividend yield
Lessee, Operating Lease, Liability, to be Paid, Year Two
2027
Research and Development Expense
Total R&D
Research and development
Document Fiscal Period Focus
Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]
Summary of Estimated Fair Values of Stock Option Awards Granted
Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block]
Schedule of Components of Loss Before Income Taxes
Title and Position [Axis]
Property, Plant, and Equipment [Table]
Performance Shares [Member]
Performance Shares
Changes in operating assets and liabilities:
Increase (Decrease) in Other Operating Assets and Liabilities, Net [Abstract]
Net Sales Royalty Threshold
Net Sales Royalty Threshold
Royalty sales
Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation
Net increase (decrease) in cash and cash equivalents
Entity Current Reporting Status
Use of Estimates, Policy [Policy Text Block]
Use of Estimates
Deferred Tax Liabilities Valuation Allowance
Deferred Tax Liabilities Valuation Allowance
Less: valuation allowance
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Number
Number of Shares Exercisable , Ending Balance
Fair Value, Inputs, Level 1 [Member]
Fair Value, Inputs, Level 1
Class of Stock [Domain]
Accounts Payable, Current
Accounts Payable, Current, Total
Accounts payable
Schedule of Calculation of Diluted Net Loss Per Share
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]
Financial Instrument [Axis]
Document Transition Report
Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss
Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss, Total
Available for sale investments
Commitments and Contingencies Disclosure [Abstract]
Subsequent Event [Line Items]
External Expenses [Member]
External Expenses [Member]
External G&A
Current liabilities:
Liabilities, Current [Abstract]
Share-Based Payment Arrangement [Abstract]
Disposal Group Name [Axis]
Asset Acquisition, Consideration Transferred, Transaction Cost
Transaction costs incurred
Common Stock [Member]
Common Stock
Statistical Measurement [Domain]
Nonoperating Income (Expense) [Abstract]
Other income (expense), net:
Director [Member]
Director Member
Equity, Attributable to Parent [Abstract]
Stockholders' equity:
Weighted-average number of shares outstanding, Basic
Weighted Average Number of Shares Outstanding, Basic
Weighted Average Number of Shares Outstanding, Basic, Total
ASSETS
Assets [Abstract]
Prepaid Rent
Prepayments cost
Revenue Recognition, Milestone Method, Contingent
Revenue Recognition, Milestone Method, Contingent
Milestones that may be recognized in the future
Entity Central Index Key
Aggregate Intrinsic Value, Exercisable
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Intrinsic Value
Class of Stock [Line Items]
Total deferred tax assets
Deferred Tax Assets, Net
Consolidation Items [Axis]
Current Fiscal Year End Date
Document Quarterly Report
Deferred Tax Assets In Process Capitalized Research and Development
Deferred Tax Assets In Process Capitalized Research and Development
Capitalized R&D
Disposal Group Name [Domain]
Cash and Cash Equivalents [Axis]
Cumulative Milestones Recognized [Member]
Cumulative Milestones Recognized [Member]
Cumulative Milestones Recognized
Fair Value, Inputs, Level 2 [Member]
Fair Value, Inputs, Level 2
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price
Weighted Average Exercise Price, Beginning Balance
Weighted Average Exercise Price, Ending Balance
Unrealized Gain (Loss) on Investments
Accretion/amortization of investments, net
Business Combination [Abstract]
Net cash used in operating activities
Cash Provided by (Used in) Operating Activity, Including Discontinued Operation
Entity Incorporation, State or Country Code
Earnings Per Share, Diluted
Earnings Per Share, Diluted, Total
Net loss per common share, Diluted
Preferred Stock, Par or Stated Value Per Share
Preferred stock, par value
Operating Lease, Weighted Average Discount Rate, Percent
Weighted average discount rate
Net loss
Net loss
Commitments and Contingencies Disclosure [Text Block]
Commitments and Contingencies
Spin Off Distribution Ratio
Spin Off Distribution Ratio
Long-Lived Asset, Class [Domain]
Deferred Tax Assets, Other
Other, net
Deferred Tax Assets, Equity Method Investments
Equity compensation
Supplemental Balance Sheet Disclosures [Text Block]
Balance Sheet Accounts and Supplemental Disclosures
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent, Total
Comprehensive income, net
Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount
Expected income tax benefit at federal statutory tax rate
Comprehensive Income (Loss), Net of Tax, Attributable to Parent
Comprehensive loss
Income Tax Jurisdiction [Domain]
Organization, Consolidation, Basis of Presentation, Business Description and Accounting Policies [Text Block]
Description of the Business
Internal Expense [Member]
Internal Expense [Member]
Internal G&A
Measurement Frequency [Domain]
Equity Components [Axis]
CASH FLOWS FROM INVESTING ACTIVITIES:
Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract]
Collaborative Arrangement Disclosure [Text Block]
Statement of Cash Flows [Abstract]
Employee Benefits and Share-Based Compensation
Incremental stock-based compensation expense
AnaptysBio [Member]
AnaptysBio [Member]
AnaptysBio [Member]
Fair Value Hierarchy and NAV [Domain]
Income Tax Disclosure [Abstract]
Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions
Decrease related to prior year tax positions
Decrease related to prior year tax positions
Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price
Weighted Average Exercise Price, Exercised
Retirement Benefits [Abstract]
Prepaid expenses and other assets
Increase (Decrease) in Prepaid Expense and Other Assets
Research And Development Expense Reversal Excluding Acquired In Process Cost
Research And Development Expense Reversal Excluding Acquired In Process Cost
External R&D
Deferred Tax Liabilities, Other
Other, net
Fair Value Disclosures [Text Block]
Fair Value Measurements and Available for Sale Investments
Income Tax Research Credits
Income Tax Research Credits
Research credits
Depreciation, Depletion and Amortization
Depreciation, Depletion and Amortization, Total
Depreciation and amortization
Lessor, Lease, Description [Line Items]
Issuance Of Common Stock In Connection With The Spin-Off And Reclassification Of Net Parent Investment
Issuance Of Common Stock In Connection With The Spin-Off And Reclassification Of Net Parent Investment
Issuance of common stock in connection with the spin-off and reclassification of net parent investment
Preferred stock, shares authorized
Preferred Stock, Shares Authorized
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest
Consolidated net loss before income taxes
Class of Stock [Axis]
Compensation and Employee Benefit Plans [Text Block]
Employee Benefit Plans
Weighted-average outstanding potentially dilutive securities
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount
Counterparty Name [Axis]
Substitute options
Substitute options
Substitute options
Lease description
Lessor, Operating Lease, Description
Debt Securities, Available-for-Sale, Current
Short-term investments
AOCI Attributable to Parent [Member]
Accumulated Other Comprehensive (Loss) Gain
Equity Incentive Plan Shares
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant
Increase (Decrease) in Accounts Payable and Accrued Liabilities
Increase (Decrease) in Accounts Payable and Accrued Liabilities, Total
Accounts payable and other liabilities
Accounts payable and other liabilities
Parent [Member]
Net Parent Investment
Proceeds from Issuance Initial Public Offering
Proceeds from public offerings
Segment Reporting, Policy [Policy Text Block]
Segment Reporting
Business Combination [Table Text Block]
Schedule of Reconciliation Amount Presented on the Combined Statements of Cash Flows
Transfers From Former Parent
Transfers From Former Parent
Transfers from former parent
Accrued Liabilities, Current
Accrued expenses
Total accrued expenses
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number
Number of Shares Outstanding, Ending Balance
Number of Shares Outstanding, Beginning Balance
Issue Of Substitute Options
Performance Stock Unit [Member]
Performance Stock Unit [Member]
Performance Stock Unit
Private Placement Secondary Shares [Member]
Secondary Shares
Private Placement Secondary Shares [Member]
Accrued Research And Development Expenses, Current
Accrued Research And Development Expenses, Current
Accrued research, development and manufacturing expenses
Research and Development Expense, Policy [Policy Text Block]
Research and Development Expenses
Document Type
Cash and Cash Equivalents, Policy [Policy Text Block]
Cash and Cash Equivalents
Other
Effective Income Tax Rate Reconciliation, Deduction, Other, Amount
Other
Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract]
CASH FLOWS FROM OPERATING ACTIVITIES:
Segment Reporting, CODM, Individual Title and Position or Group Name [Extensible Enumeration]
Segment Reporting, CODM, Individual Title and Position or Group Name [Extensible Enumeration]
Liabilities and Equity [Abstract]
LIABILITIES AND STOCKHOLDERS' EQUITY
Payments to Acquire Productive Assets
Payments to Acquire Productive Assets, Total
Front cash payment
Two Thousand Twenty Six Employee Stock Purchase Plan [Member]
Two Thousand Twenty Six Employee Stock Purchase Plan [Member]
2026 Employee Stock Purchase Plan
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures and Expirations in Period
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures and Expirations in Period, Total
Forfeitures and cancellations
Forfeitures and cancellations
Options to purchase common stock
First Tracks Biotherapeutics [Member]
First Tracks Biotherapeutics [Member]
First Tracks Biotherapeutics [Member]
Subsequent Event [Member]
Subsequent Event [Member]
Operating Income (Loss)
Loss from operations
Operating Income Loss Genrate in NOL
(Loss) income from operations
Interest portion of repayment for sale of future royalties
Interest Portion Of Repayment For Sale Of Future Royalties
Interest Portion Of Repayment For Sale Of Future Royalties
Business Combination, Separately Recognized Transaction [Domain]
Disposal Group Classification [Axis]
Segment Reporting [Table]
Entity File Number
Anaptys Bio' s Two Thousand Seventeen Plan [Member]
AnaptysBio' s Two Thousand Seventeen Plan [Member]
AnaptysBio' s 2017 Plan
Non-deductible compensation
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Amount
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Amount, Total
Federal
Income Tax Jurisdiction, Domestic Federal [Member]
Schedule Of Future Minimum Annual Obligations Operating Lease Liabilities
Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block]
Regulatory Approval For Marketing Of The First Licensed Product In The EU [Member]
Regulatory Approval For Marketing Of The First Licensed Product In The EU [Member]
Regulatory Approval For Marketing Of The First Licensed Product In The EU
Location, Statement of Income, Balance [Axis]
Long-Lived Asset, Excluding Intangible Asset and Goodwill, Impairment and Disposal [Policy Text Block]
Long Lived Assets
Retained Earnings [Member]
Accumulated Deficit
Entity Registrant Name
Shares, Issued
Shares issue
Accounting Policies [Abstract]
Gross Unrealized Gains
Debt Securities, Available-for-Sale, Unrealized Gain
Commercial and corporate obligations
Commercial and corporate obligations [Member]
Commercial and corporate obligations [Member]
Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions
Increase related to current year tax positions
Entity Address, Address Line One
Net loss before income taxes Foreign
Income (Loss) from Continuing Operations before Income Taxes, Foreign
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period
Exercised
Exercises
Receivable related to issuance of common stock, upon exercise of stock options
Proceeds from Issuance or Sale of Equity
Proceeds from Issuance or Sale of Equity, Total
Payments for Offering Costs
Payments for Offering Costs
Payments for offering costs
Payments for offering costs
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Exercise Price
Weighted Average Exercise Price, Exercisable Ending Balance
Assets, Current
Total current assets
Fair Value, Recurring and Nonrecurring [Table]
Earnings Per Share, Policy [Policy Text Block]
Net Loss Per Common Share
Segments [Axis]
Stock Options [Member]
Stock Options [Member]
Stock Options
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION
Supplemental Cash Flow Information [Abstract]
Monthly Base Rent
Monthly Base Rent
Monthly Base Rent
Related Party Transactions Disclosure [Text Block]
Related Party Transactions
Time Duration Operating Plan
Time Duration Operating Plan
Time duration for operating plan
Entity Small Business
Aggregate Intrinsic Value, Expected to vest
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value
Biotherapeutics [Member]
Biotherapeutics [Member]
Biotherapeutics [Member]
Noncash or Part Noncash Acquisition, Value of Assets Acquired
Noncash or Part Noncash Acquisition, Value of Assets Acquired, Total
Non-cash transfer of ROU assets to AnaptysBio
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value
Weighted Average Exercise Price, Forfeitures and cancellations
Sales and maturities of investments
Proceeds from Sale and Maturity of Debt Securities, Available-for-Sale
Proceeds from Sale and Maturity of Debt Securities, Available-for-Sale, Total
Significant Accounting Policies [Text Block]
Summary of Significant Accounting Policies
Consolidation Items [Domain]
Accrued compensation and related expenses
Employee-related Liabilities, Current
Employee-related Liabilities, Current, Total
Earnings Per Share [Abstract]
Net loss per common share:
Summary of Disclosure of Share-Based Compensation Arrangements by Share-Based Payment Award
Disclosure of Share-Based Compensation Arrangements by Share-Based Payment Award [Table Text Block]
Milestones Yet To Be Recognized [Member]
Milestones Yet To Be Recognized [Member]
Milestones Yet To Be Recognized
Summary of Stock Option Activity
Share-Based Payment Arrangement, Option, Activity [Table Text Block]
Payment of Termination Fee
Payment of Termination Fee
Transfers from Former Parent, Shares
Transfers from Former Parent, Shares
Transfers from former parent, Shares
Lessee, Operating Lease, Liability, to be Paid, Year Four
2030
Effective Income Tax Rate Reconciliation [Line Items]
Plan Name [Axis]
Deferred Tax Liabilities:
Deferred Tax Liabilities, Net [Abstract]
Subsequent Event Type [Axis]
Equity [Abstract]
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense, Total
Interest or Penalties on Uncertain Tax Benefits
Product and Service [Domain]
Stockholders' Equity
Equity [Text Block]
Measurement Frequency [Axis]
Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract]
CASH FLOWS FROM FINANCING ACTIVITIES:
Stock option award term
Share Based Compensation Arrangement By Share Based Payment Award Stock Term Maximum
Share Based Compensation Arrangement By Share Based Payment Award Stock Term Maximum
Net parent investment, shares
Net Parents Investment, Shares
Net Parents Investment, Shares
Members' Capital
Net former parent investment
Increase Base Rent Square Foot
Increase Base Rent Square Foot
Increase base rent square foot
Lessor Operating Lease Beginning Date
Lessor Operating Lease Beginning Date
Lease Start Date
Entity Tax Identification Number
Equity Component [Domain]
Entity Address, City or Town
Capital Expenditures Incurred but Not yet Paid
Amounts accrued for property and equipment
Stock Issued During Period, Value, New Issues
Sale of the Primary Shares
Investments, Fair Value Disclosure
Investments, Fair Value Disclosure, Total
Investments, Fair Value Disclosure
Segments [Domain]
Balance Sheet Accounts and Supplemental Disclosures [Abstract]
Balance Sheet Accounts and Supplemental Disclosures [Abstract]
Entity Common Stock, Shares Outstanding
Non-cash transfer of other current assets to AnaptysBio
Non-cash transfer of other current assets
Non-cash transfer of other current assets
Non-cash transfer of other current assets to AnaptysBio
Lease Deposit Liability
Security deposit accordance terms of the Lease
Weighted Average Number of Shares Outstanding Reconciliation [Abstract]
Weighted-average number of shares outstanding:
Net Parents Investment
Net Parents Investment
Net parent investment
Statement [Table]
Total stock-based compensation expense
Share-Based Payment Arrangement, Expense
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest
Loss before income taxes
Receivable from Customer in Brokerage
Receivable from AnaptysBio
Share-Based Payment Arrangement, Recognized Amount [Abstract]
Entity Shell Company
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Term
Contract term (in years)
Expected term (in years)
Cash Provided by (Used in) Investing Activity, Including Discontinued Operation
Net cash provided by investing activities
Statement [Line Items]
IssuanceOfCommon Stock Upon Vesting of Restricted Stock Units And Performance Stock Units, Share
IssuanceOfCommon Stock Upon Vesting of Restricted Stock Units And Performance Stock Units, Share
Issuance of common stock upon vesting of restricted stock units and performance stock units, Share
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Lessor, Operating Lease, Term of Contract
Lease Term
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period
Released
Maximum [Member]
Maximum [Member]
Mutual Funds [Member]
Mutual Funds [Member]
Mutual Funds
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
Unrealized gain (loss) on available-for-sale securities
ANB032 [Member]
ANB032 [Member]
ANB032
Non Cash transfer of Investments
Non Cash transfer of Investments
Non-cash transfer of investments to AnaptysBio
Non-cash transfer of investments to AnaptysBio
Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block]
Schedule of Reconciliation of Unrecognized Tax Benefits
FDA Regulatory Approval For Marketing Of First Licensed Product In The USA For The Treatment Of Active Flares In GPP [Member]
FDA Regulatory Approval For Marketing Of First Licensed Product In The USA For The Treatment Of Active Flares In GPP [Member]
FDA Regulatory Approval For Marketing Of First Licensed Product In The USA For The Treatment Of Active Flares In GPP
Subsequent Events [Abstract]
First Tracks Equity Plan [Member]
First Tracks Equity Plan [Member]
First Tracks Equity Plan
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]
Schedule of Components of Deferred Tax Assets and Liabilities
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value
Weighted average grant date fair value per share
Issuance of common stock upon vesting of restricted stock units and performance stock units
IssuanceOfCommon Stock Upon Vesting of Restricted Stock Units And Performance Stock Units
IssuanceOfCommon Stock Upon Vesting of Restricted Stock Units And Performance Stock Units
Current assets:
Assets, Current [Abstract]
Proceeds from Contributions from Parent
Proceeds from former parent company with Spin-off
Accrued Professional Fees, Current
Accrued professional fees and other expenses
Commercial Sales Milestone [Member]
Commercial Sales Milestone [Member]
Commercial Sales Milestone
Lessee, Operating Lease, Liability, to be Paid, after Year Four
Lessee, Operating Lease, Liability, to be Paid, after Year Four
Thereafter
Non-cash transfer of accrued liabilities to AnaptysBio
Non Cash transfer of accrued liabilities
Non Cash transfer of accrued liabilities
Document Fiscal Year Focus
Unrecognized Tax Benefits [Roll Forward]
Beginning Balance
Ending Balance
Common Stock, Shares, Outstanding
Common stock, shares outstanding
Collaborative Arrangement and Arrangement Other than Collaborative [Table]
Restrictions on Cash and Cash Equivalents [Table]
Cash Paid for Amounts Included In the Measurement of Lease Liabilities
Cash Paid for Amounts Included In the Measurement of Lease Liabilities
Cash paid for amounts included in the measurement of lease liabilities
Financial Instruments [Domain]
Statement of Comprehensive Income [Abstract]
Business Combination [Line Items]
Entity Ex Transition Period
Operating Lease, Liability, Noncurrent
Operating lease liability, net of current portion
Debt Securities, Available-for-Sale, Allowance for Credit Loss
Debt Securities, Available-for-Sale, Allowance for Credit Loss, Ending Balance
Debt Securities, Available-for-Sale, Allowance for Credit Loss, Beginning Balance
Debt Securities, Available-for-Sale, Allowance for Credit Loss, Total
Allowance for credit losses
Share-Based Payment Arrangement, Performance Shares, Outstanding Activity [Table Text Block]
Summary of activity performance stock units
Private Placement Common Stock Price Per Share
Private Placement Common Stock Price Per Share
Purchase Price
Market Based Performance Shares [Member]
Market Based Performance Shares [Member]
Market-Based Awards
Lessee, Operating Lease, Liability, to be Paid
Total minimum payments required
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months
Less than 12 Months, Fair Value
Additional Paid in Capital, Common Stock
Additional paid-in capital
Security Exchange Name
Cash and Cash equivalents Transferred To Parent
Cash and Cash equivalents Transferred To Parent
Transfers from Parent
Related and Nonrelated Parties [Axis]
New Accounting Pronouncements, Policy [Policy Text Block]
Accounting Pronouncements
Entity Address, State or Province
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition
Deferred Tax Asset, In-Process Research and Development
Research and development credits
Debt Securities, Available-for-Sale, Unrealized Loss Position, Fair Value [Table Text Block]
Schedule of Unrealized Loss and Fair Values in a Loss Position
Disclosure Text Block [Abstract]
Operating Lease, Right-of-Use Asset
Operating lease right-of-use assets
Amendment Flag
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability
Leased assets obtained in exchange for operating lease liabilities
Equity Compensation Plan
Share-Based Payment Arrangement [Text Block]
Other Nonoperating Income (Expense)
Other income (expense), net
Total other income, net
Other expense, net
Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation
Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation, Total
Cash and cash equivalents, beginning of period
Cash and cash equivalents, end of period
Distribution Made to Limited Partner, Distribution Date
Distribution date
City Area Code
Stock Issued During Period, Value, Employee Stock Purchase Plan
Issuance of common stock from exercises of options
Defined Contribution Plan Employer Eligible Salary Percent
Defined Contribution Plan Employer Eligible Salary Percent
Employer Eligible Salary Percent
Preferred Stock [Member]
Preferred Stock
Unrecognized Tax Benefits
Balance at the beginning of the year
Unrecognized Tax Benefits
Balance at the end of the year
Net operating loss carryforwards
Deferred Tax Assets Net Operating Loss Carryforwards
Deferred Tax Assets Net Operating Loss Carryforwards
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Comprehensive Income, Policy [Policy Text Block]
Comprehensive Loss
Proceeds from Issuance of Common Stock
Issuance of common stock in connection with the spin-off
Monthly base rent
Lease Base Rent
Lease Base Rent
Spin Off Transactions [Member]
Spin Off Transactions [Member]
Operating Expenses [Abstract]
Operating expenses:
Restricted Cash and Cash Equivalents [Axis]
Potential future payments
Asset Acquisition, Contingent Consideration Arrangements, Range of Outcomes, Value, High
Asset Acquisition, Contingent Consideration Arrangements, Range of Outcomes, Value, High
Common Stock, Par or Stated Value Per Share
Common stock, par value
Permanent items
Income Tax Permanent Items
Income Tax Permanent Items
Weighted average remaining contractual term, Exercisable
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted-Average Remaining Contractual Term
Lessee, Leases [Policy Text Block]
Leases
Issuance of common stock, net of transaction costs, Share
Stock Issued During Period, Shares, Transaction Costs
Stock Issued During Period, Shares, Transaction Costs
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number
RSU expected to vest at June 30, 2026
Liabilities, Current
Total current liabilities
Total current liabilities
Leasehold Improvements [Member]
Leasehold improvements
Deferred Tax Assets, Net of Valuation Allowance
Less: valuation allowance
Deferred tax assets, net of valuation allowance
Property and equipment, gross
Property, Plant, and Equipment, before Accumulated Depreciation, Depletion, and Amortization
Property, Plant and Equipment, Gross, Ending Balance
Property, Plant and Equipment, Gross, Beginning Balance
Property, Plant and Equipment, Gross, Total
Laboratory Equipment [Member]
Laboratory Equipment [Member]
Laboratory equipment
Segment Reporting [Text Block]
Segment Reporting
Debt Securities, Available-for-Sale [Table Text Block]
Schedule of Aggregate market value, cost basis, and gross unrealized gains and losses of available-for-sale investments
Issuance Of Common Stock Transaction Costs
Issuance Of Common Stock Transaction Costs
Transaction Costs
Collaborative Arrangement and Arrangement Other than Collaborative [Axis]
Trading Symbol
Property, Plant, and Equipment [Table Text Block]
Schedule Of Property and Equipment
Restricted Cash and Cash Equivalent Item [Line Items]
Income Tax Jurisdiction, Domestic State and Local, Other [Member]
Federal and State
Subsequent Event [Table]
Granted
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period
Entity Emerging Growth Company
Additional Paid-in Capital [Member]
Additional Paid-in Capital
Operating Loss Carryforwards
NOL Carryforwards
Subsidiary of Common Parent [Member]
AnaptysBio, Inc.
Plan Name [Domain]
Disposal Group Classification [Domain]
Income Tax Change in the Valuation Allowance
Income Tax Change in the Valuation Allowance
Change in the valuation allowance
Stock Issued During Period, Shares, Employee Stock Purchase Plans
Issuance of common stock from exercises of options, Share
US Treasury Securities
US Treasury Securities [Member]
Business Combination [Table]
Lease terminate period
Lessor, Operating Lease, Option to Terminate
Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract]
Non-cash investing and financing activities:
Cover [Abstract]
Operating Lease, Weighted Average Remaining Lease Term
Weighted-average remaining lease term
Internal General And Administrative Expense
Internal General And Administrative Expense
Internal G&A
Employer Matching Contribution Percent
Defined Contribution Plan, Employer Matching Contribution, Percent of Match
Debt Securities, Available-for-Sale, Unrealized Gain (Loss)
Unrealized (loss) gain on available for sale securities
Unrealized (loss) gain on available for sale securities
Unrealized loss on available-for-sale securities
Accumulated Other Comprehensive Income (Loss), Net of Tax
Accumulated Other Comprehensive Income (Loss), Net of Tax, Total
Accumulated other comprehensive loss
Concentration Risk, Credit Risk, Policy [Policy Text Block]
Concentration of Credit Risk
Reimbursement
Reimbursement Payments to Acquire Productive Assets
Reimbursement Payments to Acquire Productive Assets
ANB033 [Member]
ANB033 [Member]
ANB033
Share-Based Payment Arrangement, Noncash Expense
Share-Based Payment Arrangement, Noncash Expense, Total
Stock-based compensation
Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract]
Adjustments to reconcile net loss to net cash used in operating activities:
Fair Value Disclosures [Abstract]
Cash and cash equivalents
Cash and Cash Equivalent
Cash and Cash Equivalent, Total
Total
Noncash or Part Noncash Acquisition, Net Nonmonetary Assets Acquired (Liabilities Assumed)
Debt Securities, Available-for-Sale, Unrealized Loss
Gross Unrealized Losses
Gross Unrealized Losses
Private Placement Primary Shares [Member]
Private Placement Primary Shares [Member]
Primary Shares
Cash Provided by (Used in) Financing Activity, Including Discontinued Operation
Net cash provided by (used in) financing activities
Schedule of Related Party Transactions [Table Text Block]
Schedule of Allocations for Statements of Operations
Rosnilimab [Member]
Rosnilimab [Member]
Rosnilimab
Entity Filer Category
Segment Reporting, CODM, Profit (Loss) Measure, How Used, Description
Segment Reporting, CODM, Profit (Loss) Measure, Description
Weighted average grant date, Expected to vest
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Exercise Price
Property, Plant, and Equipment, after Accumulated Depreciation, Depletion, and Amortization
Property and equipment, net
Total property and equipment, net
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer
12 Months or Greater, Fair Value
Collaboration revenue
Revenue from Contract with Customer, Excluding Assessed Tax
Asset Acquisition [Domain]
Segment Reporting [Abstract]
Lease Agreement
Lease Agreements [Member]
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]
Schedule of Reconciliation of the Expected Statutory Federal Income Tax Provision
Issuance of common stock in connection with the spin-off and reclassification of net parent investment, Share
Issuance Of Common Stock In Connection With The Spin-Off And Reclassification Of Net Parent Investment, Share
Issuance Of Common Stock In Connection With The Spin-Off And Reclassification Of Net Parent Investment, Share
Other Assets, Current
Other current assets
Entity Address, Postal Zip Code
Statement of Financial Position [Abstract]
Local Phone Number