995300 - Document - Document And Entity Information link:presentationLink link:calculationLink link:definitionLink 995301 - Statement - Condensed Consolidated Balance Sheets (Unaudited) link:presentationLink link:calculationLink link:definitionLink 995302 - Statement - Condensed Consolidated Balance Sheets (Unaudited) (Parentheticals) link:presentationLink link:calculationLink link:definitionLink 995303 - Statement - Condensed Consolidated Statements of Operations and Comprehensive Loss (Unaudited) link:presentationLink link:calculationLink link:definitionLink 995304 - Statement - Condensed Consolidated Statements of Stockholders’ Equity (Unaudited) link:presentationLink link:calculationLink link:definitionLink 995305 - Statement - Condensed Consolidated Statements of Cash Flows (Unaudited) link:presentationLink link:calculationLink link:definitionLink 995306 - Disclosure - Organization and Description of Business link:presentationLink link:calculationLink link:definitionLink 995307 - Disclosure - Summary of Significant Accounting Policies link:presentationLink link:calculationLink link:definitionLink 995308 - Disclosure - Fair Value Measurements link:presentationLink link:calculationLink link:definitionLink 995309 - Disclosure - Condensed Consolidated Balance Sheet Components link:presentationLink link:calculationLink link:definitionLink 995310 - Disclosure - Cirm Grant link:presentationLink link:calculationLink link:definitionLink 995311 - Disclosure - Significant Agreements link:presentationLink link:calculationLink link:definitionLink 995312 - Disclosure - Warrants link:presentationLink link:calculationLink link:definitionLink 995313 - Disclosure - Commitments and Contingencies link:presentationLink link:calculationLink link:definitionLink 995314 - Disclosure - Common Stock link:presentationLink link:calculationLink link:definitionLink 995315 - Disclosure - Stock-Based Compensation link:presentationLink link:calculationLink link:definitionLink 995316 - Disclosure - Net Loss Per Share Attributable to Common Stockholders link:presentationLink link:calculationLink link:definitionLink 995317 - Disclosure - Related Parties link:presentationLink link:calculationLink link:definitionLink 995318 - Disclosure - Segment Information link:presentationLink link:calculationLink link:definitionLink 995319 - Disclosure - Restructuring link:presentationLink link:calculationLink link:definitionLink 996320 - Disclosure - Accounting Policies, by Policy (Policies) link:presentationLink link:calculationLink link:definitionLink 996321 - Disclosure - Summary of Significant Accounting Policies (Tables) link:presentationLink link:calculationLink link:definitionLink 996322 - Disclosure - Fair Value Measurements (Tables) link:presentationLink link:calculationLink link:definitionLink 996323 - Disclosure - Consolidated Balance Sheet Components (Tables) link:presentationLink link:calculationLink link:definitionLink 996324 - Disclosure - Commitments and Contingencies (Tables) link:presentationLink link:calculationLink link:definitionLink 996325 - 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Disclosure - Fair Value Measurements - Schedule of Changes in the Company’s Warrant Liability (Details) link:presentationLink link:calculationLink link:definitionLink 996333 - Disclosure - Fair Value Measurements - Schedule of Estimate the Fair Value of the Warrant Liability (Details) link:presentationLink link:calculationLink link:definitionLink 996334 - Disclosure - Condensed Consolidated Balance Sheet Components (Details) link:presentationLink link:calculationLink link:definitionLink 996335 - Disclosure - Condensed Consolidated Balance Sheet Components - Schedule of Prepaid Expenses and Other Current Assets (Details) link:presentationLink link:calculationLink link:definitionLink 996336 - Disclosure - Condensed Consolidated Balance Sheet Components - Schedule of Property and Equipment, Net (Details) link:presentationLink link:calculationLink link:definitionLink 996337 - Disclosure - Condensed Consolidated Balance Sheet Components - Schedule of Accrued Expenses and Other Current Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 996338 - Disclosure - Cirm Grant (Details) link:presentationLink link:calculationLink link:definitionLink 996339 - Disclosure - Significant Agreements (Details) link:presentationLink link:calculationLink link:definitionLink 996340 - Disclosure - Warrants (Details) link:presentationLink link:calculationLink link:definitionLink 996341 - Disclosure - Commitments and Contingencies (Details) link:presentationLink link:calculationLink link:definitionLink 996342 - Disclosure - Commitments and Contingencies - Schedule of Components of Lease Costs (Details) link:presentationLink link:calculationLink link:definitionLink 996343 - Disclosure - Commitments and Contingencies - Schedule of Operating Lease Liabilities Showing the Aggregate Lease Payments (Details) link:presentationLink link:calculationLink link:definitionLink 996344 - Disclosure - Common Stock (Details) link:presentationLink link:calculationLink link:definitionLink 996345 - Disclosure - Common Stock - Schedule of Common Stock Reserved for Future Issuance (Details) link:presentationLink link:calculationLink link:definitionLink 996346 - 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Disclosure - Stock-Based Compensation - Schedule of Stock-Based Compensation Expense (Details) 1 link:presentationLink link:calculationLink link:definitionLink