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100000 - Document - Document and Entity Information
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100010 - Statement - Balance Sheets
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100020 - Statement - Balance Sheets (Parenthetical)
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100030 - Statement - Statements of Operations and Comprehensive Loss
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100040 - Statement - Statements of Convertible Preferred Stock and Stockholders' Equity (Deficit)
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100050 - Statement - Statements of Cash Flows
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100060 - Disclosure - Organization and Basis of Presentation
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100070 - Disclosure - Summary of Significant Accounting Policies
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100080 - Disclosure - Fair Value Measurements
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100090 - Disclosure - Property and Equipment
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100100 - Disclosure - Collaboration and Licensing Agreements
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100110 - Disclosure - Convertible Preferred Stock
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100120 - Disclosure - Preferred Stock Warrants
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100130 - Disclosure - Equity Incentive Plans
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100140 - Disclosure - Income Taxes
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100150 - Disclosure - Net Loss per Share
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100160 - Disclosure - Related Party Transactions
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100170 - Disclosure - Commitments and Contingencies
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100180 - Disclosure - Selected Quarterly Financial Data (Unaudited)
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100190 - Disclosure - Subsequent Events
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100200 - Disclosure - Summary of Significant Accounting Policies (Policies)
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100210 - Disclosure - Fair Value Measurements (Tables)
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100220 - Disclosure - Property and Equipment (Tables)
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100230 - Disclosure - Convertible Preferred Stock (Tables)
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100240 - Disclosure - Equity Incentive Plans (Tables)
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100250 - Disclosure - Income Taxes (Tables)
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100260 - Disclosure - Net Loss per Share (Tables)
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100270 - Disclosure - Commitments and Contingencies (Tables)
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100280 - Disclosure - Selected Quarterly Financial Data (Unaudited) (Tables)
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100290 - Disclosure - Organization and Basis of Presentation - Additional Information (Details)
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100300 - Disclosure - Summary of Significant Accounting Policies - Additional Information (Details)
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100310 - Disclosure - Fair Value Measurements - Summary of Fair Value Measurements of Company's Financial Assets and Liabilities (Details)
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100320 - Disclosure - Fair Value Measurements - Additional Information (Details)
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100330 - Disclosure - Fair Value Measurements - Summary of Changes in Estimated Fair Value of Preferred Stock Warrant Liability (Details)
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100340 - Disclosure - Property and Equipment - Summary of Property and Equipment (Details)
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100350 - Disclosure - Property and Equipment - Additional Information (Details)
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100360 - Disclosure - Collaboration and Licensing Agreements - Additional Information (Details)
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100370 - Disclosure - Convertible Preferred Stock - Additional Information (Details)
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100380 - Disclosure - Convertible Preferred Stock - Summary of Convertible Preferred Stock (Details)
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100390 - Disclosure - Preferred Stock Warrants - Additional Information (Details)
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100400 - Disclosure - Equity Incentive Plans - Additional Information (Details)
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100410 - Disclosure - Equity Incentive Plans - Summary of Activity Under 2008 Plan and 2014 Plan, Including Grants to Nonemployees and Restricted Stock Issued (Details)
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100420 - Disclosure - Equity Incentive Plans - Summary of Weighted Average Assumptions to Estimate Fair value of Stock Option Awards and Employee Stock Purchase Plan (Details)
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100430 - Disclosure - Equity Incentive Plans - Summary of Stock-Based Compensation Recognized (Details)
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100440 - Disclosure - Income Taxes - Reconciliation of Statutory Federal Income Tax Rate to the Company's Effective Tax Rate (Details)
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100450 - Disclosure - Income Taxes - Significant Components of the Company's Deferred Tax Assets (Details)
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100460 - Disclosure - Income Taxes - Additional Information (Detail)
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100470 - Disclosure - Income Taxes - Reconciliation of Beginning and Ending Amount of Unrecognized Tax Benefits (Details)
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100480 - Disclosure - Net Loss per Share - Computation of Net Loss Per Common Share (Details)
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100490 - Disclosure - Net Loss per Share - Summary of Antidilutive Securities Excluded from Computation of Diluted Net Income (Loss) per Share (Details)
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100500 - Disclosure - Related Party Transactions - Additional Information (Details)
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100510 - Disclosure - Commitments and Contingencies - Additional Information (Details)
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100520 - Disclosure - Commitments and Contingencies - Schedule of Future Minimum Payments Under the Non cancelable Operating Lease (Details)
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100530 - Disclosure - Selected Quarterly Financial Data (Unaudited) - Schedule of Selected Quarterly Financial Results from Operations (Details)
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