0000001 - Document - Cover Page link:presentationLink link:calculationLink link:definitionLink 9952151 - Statement - Condensed Balance Sheets link:presentationLink link:calculationLink link:definitionLink 9952152 - Statement - Condensed Balance Sheets (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 9952153 - Statement - Condensed Statements of Operations and Comprehensive Loss link:presentationLink link:calculationLink link:definitionLink 9952154 - Statement - Condensed Statements of Stockholders’ Equity link:presentationLink link:calculationLink link:definitionLink 9952155 - Statement - Condensed Statements of Stockholders’ Equity (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 9952156 - Statement - Condensed Statements of Cash Flows link:presentationLink link:calculationLink link:definitionLink 9952157 - Disclosure - Description of Business link:presentationLink link:calculationLink link:definitionLink 9952158 - Disclosure - Summary of Significant Accounting Policies link:presentationLink link:calculationLink link:definitionLink 9952159 - Disclosure - Fair Value Measurements link:presentationLink link:calculationLink link:definitionLink 9952160 - Disclosure - Financial Instruments link:presentationLink link:calculationLink link:definitionLink 9952161 - Disclosure - Balance Sheet Components link:presentationLink link:calculationLink link:definitionLink 9952162 - Disclosure - License and Collaboration Agreements link:presentationLink link:calculationLink link:definitionLink 9952163 - Disclosure - Commitments and Contingencies link:presentationLink link:calculationLink link:definitionLink 9952164 - Disclosure - Stock-Based Compensation link:presentationLink link:calculationLink link:definitionLink 9952165 - Disclosure - Related Party Transactions link:presentationLink link:calculationLink link:definitionLink 9952166 - Disclosure - Income Taxes link:presentationLink link:calculationLink link:definitionLink 9952167 - Disclosure - Net Loss Per Share link:presentationLink link:calculationLink link:definitionLink 9952168 - Disclosure - Segment Reporting link:presentationLink link:calculationLink link:definitionLink 9952169 - Disclosure - Subsequent Events link:presentationLink link:calculationLink link:definitionLink 9955511 - Disclosure - Summary of Significant Accounting Policies (Policies) link:presentationLink link:calculationLink link:definitionLink 9955512 - Disclosure - Fair Value Measurements (Tables) link:presentationLink link:calculationLink link:definitionLink 9955513 - Disclosure - Financial Instruments (Tables) link:presentationLink link:calculationLink link:definitionLink 9955514 - Disclosure - Balance Sheet Components (Tables) link:presentationLink link:calculationLink link:definitionLink 9955515 - Disclosure - Commitments and Contingencies (Tables) link:presentationLink link:calculationLink link:definitionLink 9955516 - Disclosure - Stock-Based Compensation (Tables) link:presentationLink link:calculationLink link:definitionLink 9955517 - Disclosure - Net Loss Per Share (Tables) link:presentationLink link:calculationLink link:definitionLink 9955518 - Disclosure - Segment Reporting (Tables) link:presentationLink link:calculationLink link:definitionLink 9955519 - Disclosure - Description of Business (Details) link:presentationLink link:calculationLink link:definitionLink 9955520 - Disclosure - Fair Value Measurements - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955521 - Disclosure - Fair Value Measurements - Schedule of Financial Assets Measured at Fair Value on Recurring Basis (Details) link:presentationLink link:calculationLink link:definitionLink 9955522 - Disclosure - Financial Instruments - Schedule of Cash Equivalents, Restricted Cash and Investments, Classified as Available-for-Sale Securities (Details) link:presentationLink link:calculationLink link:definitionLink 9955523 - Disclosure - Financial Instruments - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955524 - Disclosure - Balance Sheet Components - Schedule of Property and Equipment, Net (Details) link:presentationLink link:calculationLink link:definitionLink 9955525 - Disclosure - Balance Sheet Components - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955526 - Disclosure - License and Collaboration Agreements - Pfizer (Details) link:presentationLink link:calculationLink link:definitionLink 9955527 - Disclosure - License and Collaboration Agreements - Cellectis (Details) link:presentationLink link:calculationLink link:definitionLink 9955528 - Disclosure - License and Collaboration Agreements - Servier (Details) link:presentationLink link:calculationLink link:definitionLink 9955529 - Disclosure - License and Collaboration Agreements - Notch Therapeutics (Details) link:presentationLink link:calculationLink link:definitionLink 9955530 - Disclosure - License and Collaboration Agreements - MD Anderson Cancer Center (Details) link:presentationLink link:calculationLink link:definitionLink 9955531 - Disclosure - License and Collaboration Agreements - Overland Therapeutics, Inc. (Details) link:presentationLink link:calculationLink link:definitionLink 9955532 - Disclosure - License and Collaboration Agreements - Antion (Details) link:presentationLink link:calculationLink link:definitionLink 9955533 - Disclosure - License and Collaboration Agreements - Foresight Diagnostics (Details) link:presentationLink link:calculationLink link:definitionLink 9955534 - Disclosure - Commitments and Contingencies - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955535 - Disclosure - Commitments and Contingencies - Lease Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 9955536 - Disclosure - Commitments and Contingencies - Lease Costs (Details) link:presentationLink link:calculationLink link:definitionLink 9955537 - Disclosure - Commitments and Contingencies - Undiscounted Future Lease Payments (Details) link:presentationLink link:calculationLink link:definitionLink 9955538 - Disclosure - Stock-Based Compensation - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955539 - Disclosure - Stock-Based Compensation - Schedule of Stock Option Activity (Details) link:presentationLink link:calculationLink link:definitionLink 9955540 - Disclosure - Stock-Based Compensation - Schedule of Restricted Stock Units Activity (Details) link:presentationLink link:calculationLink link:definitionLink 9955541 - Disclosure - Stock-Based Compensation - Schedule of Stock-Based Compensation Expense (Details) link:presentationLink link:calculationLink link:definitionLink 9955542 - Disclosure - Related Party Transactions (Details) link:presentationLink link:calculationLink link:definitionLink 9955543 - Disclosure - Net Loss Per Share (Details) link:presentationLink link:calculationLink link:definitionLink 9955544 - Disclosure - Segment Reporting - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955545 - Disclosure - Segment Reporting - Segment Profit or Loss and Segment Expenses (Details) link:presentationLink link:calculationLink link:definitionLink 9955546 - Disclosure - Subsequent Events (Details) link:presentationLink link:calculationLink link:definitionLink