100000 - Document - Document and Entity Information link:presentationLink link:calculationLink link:definitionLink 100010 - Statement - Consolidated Balance Sheets link:presentationLink link:calculationLink link:definitionLink 100020 - Statement - Consolidated Balance Sheets (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 100030 - Statement - Consolidated Statements of Operations link:presentationLink link:calculationLink link:definitionLink 100040 - Statement - Consolidated Statements of Comprehensive Loss link:presentationLink link:calculationLink link:definitionLink 100050 - Statement - Consolidated Statements of Stockholders' Equity link:presentationLink link:calculationLink link:definitionLink 100060 - Statement - Consolidated Statement of Cash Flows link:presentationLink link:calculationLink link:definitionLink 100070 - Disclosure - Organization link:presentationLink link:calculationLink link:definitionLink 100080 - Disclosure - Summary of Significant Accounting Policies link:presentationLink link:calculationLink link:definitionLink 100090 - 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Disclosure - Summary of Significant Accounting Policies (Policies) link:presentationLink link:calculationLink link:definitionLink 100190 - Disclosure - Summary of Significant Accounting Policies (Tables) link:presentationLink link:calculationLink link:definitionLink 100200 - Disclosure - Fair Value Measurements (Tables) link:presentationLink link:calculationLink link:definitionLink 100210 - Disclosure - Balance Sheet Components (Tables) link:presentationLink link:calculationLink link:definitionLink 100220 - Disclosure - Commitments and Contingencies (Tables) link:presentationLink link:calculationLink link:definitionLink 100230 - Disclosure - Restructuring, Impairment and Other Costs of Terminated Programs (Tables) link:presentationLink link:calculationLink link:definitionLink 100240 - Disclosure - Stock-Based Compensation (Tables) link:presentationLink link:calculationLink link:definitionLink 100250 - Disclosure - Income Taxes (Tables) link:presentationLink link:calculationLink link:definitionLink 100260 - 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Disclosure - Fair Value Measurements - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 100330 - Disclosure - Balance Sheet Components - Schedule of Property and Equipment, Net (Details) link:presentationLink link:calculationLink link:definitionLink 100340 - Disclosure - Balance Sheet Components - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 100350 - Disclosure - Balance Sheet Components - Schedule of Prepaid Expenses and Other Current Assets (Details) link:presentationLink link:calculationLink link:definitionLink 100360 - Disclosure - Balance Sheet Components - Schedule of Other Current Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 100370 - Disclosure - Commitments and Contingencies - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 100380 - Disclosure - Commitments and Contingencies - Schedule of Future Minimum Lease Payments (Details) link:presentationLink link:calculationLink link:definitionLink 100390 - 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