101 - Document - Document and Entity Information link:calculationLink link:presentationLink link:definitionLink 103 - Statement - Balance Sheets link:calculationLink link:presentationLink link:definitionLink 104 - Statement - Balance Sheets (Parenthetical) link:calculationLink link:presentationLink link:definitionLink 105 - Statement - Statements of Operations link:calculationLink link:presentationLink link:definitionLink 106 - Statement - Statement of Stockholders' Equity link:calculationLink link:presentationLink link:definitionLink 107 - Statement - Statements of Cash Flows link:calculationLink link:presentationLink link:definitionLink 108 - Disclosure - Business link:calculationLink link:presentationLink link:definitionLink 109 - Disclosure - Summary of Significant Accounting Policies link:calculationLink link:presentationLink link:definitionLink 110 - Disclosure - Recently Issued Accounting Pronouncements link:calculationLink link:presentationLink link:definitionLink 111 - Disclosure - Restructuring link:calculationLink link:presentationLink link:definitionLink 112 - Disclosure - Fair Value Measurements link:calculationLink link:presentationLink link:definitionLink 113 - Disclosure - Net Loss per Share link:calculationLink link:presentationLink link:definitionLink 114 - Disclosure - Related Party Transactions link:calculationLink link:presentationLink link:definitionLink 115 - Disclosure - Commitments and Contingencies link:calculationLink link:presentationLink link:definitionLink 116 - Disclosure - Warrants link:calculationLink link:presentationLink link:definitionLink 117 - Disclosure - Common Stock link:calculationLink link:presentationLink link:definitionLink 118 - Disclosure - Stock-Based Compensation link:calculationLink link:presentationLink link:definitionLink 119 - Disclosure - Fair Value Measurements (Tables) link:calculationLink link:presentationLink link:definitionLink 120 - Disclosure - Net Loss per Share (Tables) link:calculationLink link:presentationLink link:definitionLink 121 - Disclosure - Warrants (Tables) link:calculationLink link:presentationLink link:definitionLink 122 - Disclosure - Stock-Based Compensation (Tables) link:calculationLink link:presentationLink link:definitionLink 123 - Disclosure - Business - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 124 - Disclosure - Restructuring - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 125 - Disclosure - Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) link:calculationLink link:presentationLink link:definitionLink 126 - Disclosure - Potential Dilutive Shares Excluded from Computation of Diluted Net Loss Per Share (Detail) link:calculationLink link:presentationLink link:definitionLink 127 - Disclosure - Related Party Transactions - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 128 - Disclosure - Commitments and Contingencies - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 129 - Disclosure - Number of Warrants Outstanding (Detail) link:calculationLink link:presentationLink link:definitionLink 130 - Disclosure - Warrants - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 131 - Disclosure - Assumptions Used In Binomial Valuation Model and Black-Scholes Valuation Model (Detail) link:calculationLink link:presentationLink link:definitionLink 132 - Disclosure - Warrant Exercise (Detail) link:calculationLink link:presentationLink link:definitionLink 133 - Disclosure - Common Stock - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 134 - Disclosure - Stock-Based Compensation Expense on All Employee and Non-Employee Awards (Detail) link:calculationLink link:presentationLink link:definitionLink 135 - Disclosure - Stock-Based Compensation - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 136 - Disclosure - Fair Value of Stock Options Assumptions Using Black-Scholes Option Valuation Model (Detail) link:calculationLink link:presentationLink link:definitionLink 137 - Disclosure - Stock Option Activity Under Stock Option Plan (Detail) link:calculationLink link:presentationLink link:definitionLink 138 - Disclosure - Summary of Unvested Restricted Stock (Detail) link:calculationLink link:presentationLink link:definitionLink