Document and Entity Information Document Information [Table] Document Information [Line Items] Document Type Document Quarterly Report Document Period End Date Document Transition Report Securities Act File Number Entity Registrant Name Entity Incorporation, State or Country Code Entity Tax Identification Number Entity Address, Address Line One Entity Address, City or Town Entity Address, State or Province Entity Address, Postal Zip Code City Area Code Local Phone Number Title of 12(b) Security Trading Symbol Security Exchange Name Entity Current Reporting Status Entity Interactive Data Current Entity Filer Category Entity Small Business Entity Emerging Growth Company Entity Ex Transition Period Entity Shell Company Entity Common Stock, Shares Outstanding Entity Central Index Key Current Fiscal Year End Date Document Fiscal Year Focus Document Fiscal Period Focus Amendment Flag CONDENSED BALANCE SHEETS Statement [Table] Statement [Line Items] Statement Assets [Abstract] Assets Assets, Current [Abstract] Current assets: Cash and Cash Equivalent Cash and cash equivalents Short-Term Investments Short-term investments Prepaid Expense and Other Assets, Current Prepaid expenses and other current assets Total Assets, Current Total current assets Operating Lease, Right-of-Use Asset Right of use assets - operating leases Deferred Costs, Noncurrent Deferred offering costs Other Assets, Noncurrent Other assets Assets Total assets Liabilities and Equity [Abstract] Liabilities and Stockholders' Equity Liabilities [Abstract] Liabilities Liabilities, Current [Abstract] Current liabilities: Accounts Payable, Current Accounts payable Accrued Liabilities, Current Accrued expenses Total Operating Lease, Liability, Current Operating lease liabilities Liabilities, Current Total current liabilities Operating Lease, Liability, Noncurrent Operating lease liabilities, net of current amount Liabilities Total liabilities Commitments and Contingencies Commitments and contingencies (Note 8) Equity, Attributable to Parent [Abstract] Stockholders' equity: Preferred Stock, Value, Issued Preferred stock $0.0001 par value, 10,000,000 shares authorized; no shares issued and outstanding Common Stock, Value, Issued Common stock $0.0001 par value, 200,000,000 shares authorized; 45,308,941 and 42,452,251 shares issued and outstanding at March 31, 2026 and December 31, 2025, respectively Additional Paid in Capital Additional paid-in capital Retained Earnings (Accumulated Deficit) Accumulated deficit Accumulated deficit Accumulated Other Comprehensive Income (Loss), Net of Tax Accumulated other comprehensive income (loss) Equity, Attributable to Parent Ending balance Beginning balance Total stockholders' equity Liabilities and Equity Total liabilities and stockholders' equity Preferred Stock, Par or Stated Value Per Share Preferred stock, par value (in dollars per share) Preferred Stock, Shares Authorized Preferred stock, shares authorized (in shares) Preferred Stock, Shares Issued Preferred stock, shares issued (in shares) Preferred Stock, Shares Outstanding Preferred stock, shares outstanding (in shares) Common Stock, Par or Stated Value Per Share Common stock, par value (in dollars per share) Common Stock, Shares Authorized Common stock, shares authorized (in shares) Common Stock, Shares, Issued Common stock, shares issued (in shares) Common Stock, Shares, Outstanding Common stock, shares outstanding (in shares) CONDENSED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS Operating Expenses [Abstract] Operating expenses: Research and Development Expense Research and development Total Firmonertinib General and Administrative Expense General and administrative Operating Expenses Total operating expenses Operating Income (Loss) Operating loss Investment Income, Net Interest and investment income Net loss Net loss OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment and Tax Unrealized gain (loss) on marketable securities Unrealized loss on marketable securities Other Comprehensive Income (Loss), Net of Tax Total other comprehensive gain (loss) Comprehensive Income (Loss), Net of Tax, Attributable to Parent Total comprehensive loss Earnings Per Share [Abstract] Share information: Earnings Per Share, Basic Net loss per share attributable to common stockholders, basic (in dollars per share) Earnings Per Share, Diluted Net loss per share attributable to common stockholders, diluted (in dollars per share) Weighted Average Number of Shares Outstanding, Basic Weighted-average shares of common stock outstanding, basic (in shares) Weighted Average Number of Shares Outstanding, Diluted Weighted-average shares of common stock outstanding, diluted (in shares) CONDENSED STATEMENTS OF STOCKHOLDERS' EQUITY (DEFICIT) Equity Components [Axis] Equity Component [Domain] Common Stock [Member] Common stock Additional Paid-in Capital [Member] Additional paid-in capital AOCI Attributable to Parent [Member] Accumulated Other Comprehensive (Loss) Retained Earnings [Member] Accumulated deficit Increase (Decrease) in Temporary Equity [Roll Forward] Changes in stockholder's equity Shares, Outstanding Ending balance (in shares) Beginning balance (in shares) Stock Issued During Period, Value, New Issues Issuance of common stock, net of issuance costs Stock Issued During Period, Shares, New Issues Issuance of common stock, net of issuance costs (in shares) Stock Issued During Period, Value, Stock Options Exercised Exercise of stock options Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period Exercised (in shares) Exercise of stock options (in shares) Number of warrants exercised during the current period. Stock Issued During Period, Shares, Warrants Exercised Exercise of pre-funded warrants (in shares) APIC, Share-Based Payment Arrangement, Increase for Cost Recognition Stock-based compensation expense Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs Issuance costs CONDENSED STATEMENTS OF CASH FLOWS Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Cash flows from operating activities: Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Net loss Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract] Adjustment to reconcile net loss to net cash used in operating activities: Share-Based Payment Arrangement, Noncash Expense Stock-based compensation expense Depreciation, Amortization and Accretion, Net Amortization/Accretion of bond discounts/premiums Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract] Changes in operating assets and liabilities: Increase (Decrease) in Prepaid Expense and Other Assets Prepaid expenses and other current assets Increase (Decrease) in Other Operating Assets Other assets Increase (Decrease) in Accounts Payable, Trade Accounts payable Increase (Decrease) in Accrued Liabilities Accrued expenses Increase (Decrease) in Operating Lease Liability Operating lease liabilities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Net cash used in operating activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract] Cash flows from investing activities: Payments to Acquire Investments Purchase of short-term and long-term investments Proceeds from Sale, Maturity and Collection of Investments Sales and maturities of short-term and long-term investments Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Net cash used in investing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Cash flows from financing activities: Proceeds from Issuance of Common Stock Proceeds from issuance of common stock, net of issuance costs Proceeds from Stock Options Exercised Proceeds from the exercise of stock options Payments of Stock Issuance Costs Payment of deferred financing costs Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Net cash provided by financing activities 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 Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Cash and cash equivalents at end of the year Cash and cash equivalents at beginning of the year No definition available. Background Nature of Operations [Text Block] Background No definition available. Development Stage Risks and Liquidity The entire disclosure for development stage risks and liquidity. Development Stage Risks and Liquidity [Text Block] Development Stage Risks and Liquidity Summary of Significant Accounting Policies Significant Accounting Policies [Text Block] Summary of Significant Accounting Policies Fair Value Measurements Fair Value Disclosures [Text Block] Fair Value Measurements Prepaid Expenses and Other Current Assets The entire disclosure for prepaid expenses and other current assets. Prepaid Expenses and Other Current Assets [Text block] Prepaid Expenses and Other Current Assets Accrued Expenses Accounts Payable and Accrued Liabilities Disclosure [Text Block] Accrued Expenses Stock-based Compensation Share-Based Payment Arrangement [Text Block] Stock-based Compensation No definition available. Commitments, Contingencies, and Collaborations The entire disclosure for licenses and arrangements other than collaborative applicable to revenue-generating activity or operations. License and Arrangements [Text Block] Commitments, Contingencies, and Collaborations Segment Information Segment Reporting Disclosure [Text Block] Segment Information Common Stock Equity [Text Block] Common Stock Debt Debt Disclosure [Text Block] Debt Basis of Accounting, Policy [Policy Text Block] Interim Financial Statements Use of Estimates, Policy [Policy Text Block] Use of Estimates Fair Value Measurement, Policy [Policy Text Block] Fair Value Measurements Earnings Per Share, Policy [Policy Text Block] Net Loss per Share New Accounting Pronouncements, Policy [Policy Text Block] Accounting Pronouncements Not Yet Adopted Disclosure of accounting policy for license and collaboration agreements. License and Collaboration Agreements, Policy [Policy Text Block] License and Collaboration Agreements Comprehensive Income, Policy [Policy Text Block] Other Comprehensive Income (Loss) Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Schedule of computation of net loss per share, basic and diluted Fair Value, Assets Measured on Recurring Basis [Table Text Block] Schedule of company's financial assets measured at fair value on a recurring basis Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Table Text Block] Schedule of prepaid expenses and other current assets Schedule of Accrued Liabilities [Table Text Block] Schedule of accrued expenses Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block] Schedule of stock-based compensation expense Share-Based Payment Arrangement, Option, Activity [Table Text Block] Schedule of of stock options activity under the plan Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] Schedule of assumptions used in estimating the fair value of options Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table Text Block] Schedule of significant expense categories Cash includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the customer may deposit additional funds at any time and effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid Investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Short-term investments, exclusive of cash equivalents, generally consist of marketable securities intended to be sold within one year or longer ( the normal operating cycle if longer or (longer than one operating cycle) and may include trading securities, available-for-sale securities, or held-to-maturity securities, as applicable. Cash Cash Equivalents, Short Term Investments And Long Term Investments Cash and cash equivalents, and short and long-term investments Substantial Doubt about Going Concern, within One Year [true false] Substantial doubt about ability to continue as going concern within one year Net Income (Loss) Available to Common Stockholders, Basic [Abstract] Numerator: Net Income (Loss) Available to Common Stockholders, Basic Net loss (basic) Net Income (Loss) Available to Common Stockholders, Diluted Net loss (diluted) Weighted Average Number of Shares Outstanding, Diluted [Abstract] Denominator: Weighted Average Number of Shares Issued, Basic Weighted-average shares of common stock outstanding Class of Warrant or Right, Outstanding Weighted-average pre-funded warrants outstanding Class of Warrant or Right, Exercise Price of Warrants or Rights Pre-funded warrants, exercise price per warrants (in dollar per warrant) Antidilutive Security, Excluded EPS Calculation [Table] Antidilutive Securities [Axis] Antidilutive Securities, Name [Domain] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive securities Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Potentially dilutive securities have been excluded from the computation of diluted weighted-average shares Fair Value, Recurring and Nonrecurring [Table] Measurement Basis [Axis] Portion at Fair Value Measurement [Member] Reported Value Measurement [Member] Amortized Cost Estimate of Fair Value Measurement [Member] Fair Value Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Domain] Fair Value, Inputs, Level 1 [Member] Level 1 Fair Value, Inputs, Level 2 [Member] Level 2 Asset Class [Axis] Asset Class [Domain] Corporate Debt Securities [Member] Corporate securities US Government Agencies Debt Securities [Member] Government securities Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value Measurements Cash and Cash Equivalents, Fair Value Disclosure Money market funds Debt Securities, Available-for-Sale, Amortized Cost Securities, Carrying Value Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain, before Tax Gross Unrealized Gains Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Loss, before Tax Gross Unrealized Losses Debt Securities, Available-for-Sale Securities, Fair Value