00000 - Document - Template Link link:presentationLink link:calculationLink link:definitionLink 100000 - Document - Document and Entity Information link:calculationLink link:presentationLink link:definitionLink 100010 - Statement - Condensed Balance Sheets link:calculationLink link:presentationLink link:definitionLink 100020 - Statement - Condensed Balance Sheets (Parenthetical) link:calculationLink link:presentationLink link:definitionLink 100030 - Statement - Condensed Statements of Operations and Comprehensive Loss link:calculationLink link:presentationLink link:definitionLink 100040 - Statement - Condensed Statements of Redeemable Convertible Preferred Stock and Stockholders' Equity (Deficit) link:calculationLink link:presentationLink link:definitionLink 100050 - Statement - Condensed Statements of Redeemable Convertible Preferred Stock and Stockholders' Equity (Deficit) (Parenthetical) link:calculationLink link:presentationLink link:definitionLink 100060 - Statement - Condensed Statements of Cash Flows link:calculationLink link:presentationLink link:definitionLink 100070 - Disclosure - Organization and Description of Business link:calculationLink link:presentationLink link:definitionLink 100080 - Disclosure - Summary of Significant Accounting Policies link:calculationLink link:presentationLink link:definitionLink 100090 - Disclosure - Financial Instruments link:calculationLink link:presentationLink link:definitionLink 100100 - Disclosure - Property and Equipment, net link:calculationLink link:presentationLink link:definitionLink 100110 - Disclosure - Accrued Liabilities and Other Long-Term Liabilities link:calculationLink link:presentationLink link:definitionLink 100120 - Disclosure - Novartis Agreement link:calculationLink link:presentationLink link:definitionLink 100130 - Disclosure - License Agreements link:calculationLink link:presentationLink link:definitionLink 100140 - Disclosure - Research Agreement link:calculationLink link:presentationLink link:definitionLink 100150 - Disclosure - Redeemable Convertible Preferred Stock link:calculationLink link:presentationLink link:definitionLink 100160 - Disclosure - Common Stock link:calculationLink link:presentationLink link:definitionLink 100170 - Disclosure - Equity Incentive Plans and Stock-Based Compensation link:calculationLink link:presentationLink link:definitionLink 100180 - Disclosure - Income Taxes link:calculationLink link:presentationLink link:definitionLink 100190 - Disclosure - Commitments and Contingencies link:calculationLink link:presentationLink link:definitionLink 100200 - Disclosure - Related Party Transactions link:calculationLink link:presentationLink link:definitionLink 100210 - Disclosure - Defined Contribution Plan link:calculationLink link:presentationLink link:definitionLink 100220 - Disclosure - Net Loss Per Share Attributable to Common Stockholders link:calculationLink link:presentationLink link:definitionLink 100230 - Disclosure - Subsequent Events link:calculationLink link:presentationLink link:definitionLink 100240 - Disclosure - Summary of Significant Accounting Policies (Policies) link:calculationLink link:presentationLink link:definitionLink 100250 - Disclosure - Summary of Significant Accounting Policies (Tables) link:calculationLink link:presentationLink link:definitionLink 100260 - Disclosure - Financial Instruments (Tables) link:calculationLink link:presentationLink link:definitionLink 100270 - Disclosure - Property and Equipment, net (Tables) link:calculationLink link:presentationLink link:definitionLink 100280 - Disclosure - Accrued Liabilities and Other Long-Term Liabilities (Tables) link:calculationLink link:presentationLink link:definitionLink 100290 - Disclosure - Redeemable Convertible Preferred Stock (Tables) link:calculationLink link:presentationLink link:definitionLink 100300 - Disclosure - Common Stock (Tables) link:calculationLink link:presentationLink link:definitionLink 100310 - Disclosure - Equity Incentive Plans and Stock-Based Compensation (Tables) link:calculationLink link:presentationLink link:definitionLink 100320 - Disclosure - Commitments and Contingencies (Tables) link:calculationLink link:presentationLink link:definitionLink 100330 - Disclosure - Net Loss Per Share Attributable to Common Stockholders (Tables) link:calculationLink link:presentationLink link:definitionLink 100340 - Disclosure - Organization and Description of Business - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 100350 - Disclosure - Summary of Significant Accounting Policies - Additional Information (Details) link:calculationLink link:presentationLink link:definitionLink 100360 - Disclosure - Summary of Significant Accounting Policies - Summary of Useful Lives of Property and Equipment (Details) link:calculationLink link:presentationLink link:definitionLink 100370 - Disclosure - Financial Instruments - Summary of Cash and Cash Equivalents, Money Market Funds and Short-term Investments by Significant Investment Category (Details) link:calculationLink link:presentationLink link:definitionLink 100380 - Disclosure - Financial Instruments - Additional Information (Details) link:calculationLink link:presentationLink link:definitionLink 100390 - Disclosure - Property and Equipment, net - Schedule of Property and Equipment (Details) link:calculationLink link:presentationLink link:definitionLink 100400 - Disclosure - Property and Equipment, net - Additional Information (Details) link:calculationLink link:presentationLink link:definitionLink 100410 - Disclosure - Accrued Liabilities and Other Long-Term Liabilities - Summary of Accrued Liabilities (Details) link:calculationLink link:presentationLink link:definitionLink 100420 - Disclosure - Accrued Liabilities and Other Long-Term Liabilities - Summary of Other Long-Term Liabilities (Details) link:calculationLink link:presentationLink link:definitionLink 100430 - Disclosure - Novartis Agreement - Additional Information (Details) link:calculationLink link:presentationLink link:definitionLink 100440 - Disclosure - License Agreements - Additional Information (Details) link:calculationLink link:presentationLink link:definitionLink 100450 - Disclosure - Research Agreement - Additional Information (Details) link:calculationLink link:presentationLink link:definitionLink 100460 - Disclosure - Redeemable Convertible Preferred Stock - Additional Information (Details) link:calculationLink link:presentationLink link:definitionLink 100470 - Disclosure - Redeemable Convertible Preferred Stock - Summary of Redeemable Convertible Preferred Stock (Details) link:calculationLink link:presentationLink link:definitionLink 100480 - Disclosure - Common Stock - Additional Information (Details) link:calculationLink link:presentationLink link:definitionLink 100490 - Disclosure - Common Stock - Schedule of Shares Reserved for Future Issuance (Details) link:calculationLink link:presentationLink link:definitionLink 100500 - Disclosure - Equity Incentive Plans and Stock-Based Compensation - Additional Information (Details) link:calculationLink link:presentationLink link:definitionLink 100510 - Disclosure - Equity Incentive Plans and Stock-Based Compensation - Summary of Restricted Stock Activity (Details) link:calculationLink link:presentationLink link:definitionLink 100520 - Disclosure - Equity Incentive Plans and Stock-Based Compensation - Restricted Common Stock Awards - Additional Information (Details) link:calculationLink link:presentationLink link:definitionLink 100530 - Disclosure - Equity Incentive Plans and Stock-Based Compensation - Incentive Stock Options and Nonqualified Stock Options - Additional Information (Details) link:calculationLink link:presentationLink link:definitionLink 100540 - Disclosure - Equity Incentive Plans and Stock-Based Compensation - Summary of Black-Scholes Option Pricing Model to Estimate Stock-based Compensation Expense for Stock Option Awards (Details) link:calculationLink link:presentationLink link:definitionLink 100550 - Disclosure - Equity Incentive Plans and Stock-Based Compensation - Summary of Option Activity Under the 2015 Plan (Details) link:calculationLink link:presentationLink link:definitionLink 100560 - Disclosure - Equity Incentive Plans and Stock-Based Compensation - Summary of Components and Classification of Stock-based Compensation Expense for Stock-based Awards (Details) link:calculationLink link:presentationLink link:definitionLink 100570 - Disclosure - Equity Incentive Plans and Stock-Based Compensation - Stock-Based Compensation Expense - Additional Information (Details) link:calculationLink link:presentationLink link:definitionLink 100580 - Disclosure - Equity Incentive Plans and Stock-Based Compensation - 2020 Employee Stock Purchase Plan - Additional Information (Details) link:calculationLink link:presentationLink link:definitionLink 100590 - Disclosure - Income Taxes - Additional Information (Details) link:calculationLink link:presentationLink link:definitionLink 100600 - Disclosure - Commitments and Contingencies - Additional Information (Details) link:calculationLink link:presentationLink link:definitionLink 100610 - Disclosure - Commitments and Contingencies - Schedule of Future Minimum Payments (Details) link:calculationLink link:presentationLink link:definitionLink 100620 - Disclosure - Related Party Transactions - Additional Information (Details) link:calculationLink link:presentationLink link:definitionLink 100630 - Disclosure - Defined Contribution Plan - Additional Information (Details) link:calculationLink link:presentationLink link:definitionLink 100640 - Disclosure - Net Loss Per Share Attributable to Common Stockholders - Summary of Potentially Dilutive Securities Excluded from Computation of Diluted Net Loss Per Share (Details) link:calculationLink link:presentationLink link:definitionLink 100650 - Disclosure - Net Loss Per Share Attributable to Common Stockholders - Reconciliation of Numerator and Denominator Used in Calculation of Basic and Diluted Net Loss Per Share (Details) link:calculationLink link:presentationLink link:definitionLink