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100000 - Document - Document and Entity Information
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100010 - Statement - Condensed Balance Sheets
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100020 - Statement - Condensed Balance Sheets (Parenthetical)
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100030 - Statement - Condensed Statements of Operations and Comprehensive Loss
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100040 - Statement - Condensed Statements of Stockholders' Equity
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100050 - Statement - Condensed Statements of Stockholders' Equity (Parenthetical)
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100060 - Statement - Condensed Statements of Cash Flows
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100070 - Disclosure - Organization
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100080 - Disclosure - Summary of Significant Accounting Policies
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100090 - Disclosure - Cash Equivalents and Marketable Securities
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100100 - Disclosure - Fair Value Measurements
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100110 - Disclosure - Property and Equipment, Net
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100120 - Disclosure - Commitments and Contingencies
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100130 - Disclosure - Balance Sheet Components
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100140 - Disclosure - Collaboration and License Agreements
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100150 - Disclosure - Convertible Preferred Stock and Common Stock
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100160 - Disclosure - Stock-Based Compensation
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100170 - Disclosure - Net Loss Per Common Share
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100180 - Disclosure - Subsequent Events
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100190 - Disclosure - Summary of Significant Accounting Policies (Policies)
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100200 - Disclosure - Summary of Significant Accounting Policies (Tables)
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100210 - Disclosure - Cash Equivalents and Marketable Securities (Tables)
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100220 - Disclosure - Fair Value Measurements (Tables)
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100250 - Disclosure - Balance Sheet Components (Tables)
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100260 - Disclosure - Collaboration and License Agreements (Tables)
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100270 - Disclosure - Stock-Based Compensation (Tables)
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100280 - Disclosure - Net Loss Per Common Share (Tables)
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100290 - Disclosure - Organization - Additional Information (Detail)
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100300 - Disclosure - Summary of Significant Accounting Policies - Additional Information (Detail)
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100310 - Disclosure - Summary of Significant Accounting Policies - Reconciliation of Cash, Cash Equivalents, and Restricted Cash (Detail)
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100320 - Disclosure - Summary of Significant Accounting Policies - Schedule of Impact of Topic 842 on Accompanying Condensed Balance Sheet (Detail)
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100330 - Disclosure - Cash Equivalents and Marketable Securities - Schedule of Amortized Cost, Unrealized Gains and Losses and Fair Value of Cash Equivalent and Marketable Securities (Detail)
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100340 - Disclosure - Cash Equivalents and Marketable Securities - Additional Information (Detail)
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100350 - Disclosure - Fair Value Measurements - Financial Assets and Liabilities Subject To Fair Value Measurements on a Recurring Basis (Detail)
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100360 - Disclosure - Fair Value Measurements - Additional Information (Detail)
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100370 - Disclosure - Property and Equipment, Net - Summary of Property and Equipment and Related Accumulated Depreciation and Amortization (Detail)
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100380 - Disclosure - Property and Equipment, Net - Additional Information (Detail)
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100390 - Disclosure - Commitments and Contingencies - Additional Information (Detail)
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100400 - Disclosure - Commitments and Contingencies - Schedule of Components of Lease Costs (Detail)
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100410 - Disclosure - Commitments and Contingencies - Schedule of Supplemental Information Related to Leases (Detail)
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100420 - Disclosure - Commitments and Contingencies - Schedule of Minimum Annual Rental Payments Under Company's Operating Lease Agreements (Detail)
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100430 - Disclosure - Commitments and Contingencies - Schedule of Minimum Annual Rental Payments Under Company's Operating Lease Agreements (Detail)2
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100440 - Disclosure - Balance Sheet Components - Schedule of Prepaid Expenses and Other Current Assets (Detail)
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100450 - Disclosure - Balance Sheet Components - Schedule of Deposits and Other Long-Term Assets (Detail)
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100460 - Disclosure - Balance Sheet Components - Schedule of Accrued Current Liabilities (Detail)
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100470 - Disclosure - Collaboration and License Agreements - Additional Information (Detail)
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100480 - Disclosure - Collaboration and License Agreements - Schedule of Changes in Deferred Revenue Balance (Detail)
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100490 - Disclosure - Convertible Preferred Stock and Common Stock - Additional Information (Detail)
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100500 - Disclosure - Stock Based Compensation - Additional Information (Detail)
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100510 - Disclosure - Stock-Based Compensation - Schedule of Fair Value of Stock Purchase Rights Granted Under Employee Stock Purchase Plan (Detail)
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100520 - Disclosure - Stock-Based Compensation - Schedule of Fair Value of Stock Options Granted Estimated using Weighted Average Assumptions (Detail)
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100530 - Disclosure - Stock-Based Compensation - Schedule of Stock Options Activity (Detail)
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100540 - Disclosure - Stock-Based Compensation - Schedule of Stock Based Compensation Expense (Detail)
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100550 - Disclosure - Net Loss Per Common Share - Computation of Basic and Diluted Net Loss Per Share (Detail)
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100560 - Disclosure - Net Loss Per Common Share - Computation of Potentially Anti-dilutive Securities (Detail)
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100570 - Disclosure - Subsequent Event - Additional Information (Detail)
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