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Statement - Condensed Consolidated Statements of Cash Flows (Unaudited) link:presentationLink link:calculationLink link:definitionLink 0000009 - Disclosure - Nature of the Business link:presentationLink link:calculationLink link:definitionLink 0000010 - Disclosure - Summary of Significant Accounting Policies link:presentationLink link:calculationLink link:definitionLink 0000011 - Disclosure - Marketable Securities link:presentationLink link:calculationLink link:definitionLink 0000012 - Disclosure - Fair Value Measurements link:presentationLink link:calculationLink link:definitionLink 0000013 - Disclosure - Accrued Expenses link:presentationLink link:calculationLink link:definitionLink 0000014 - Disclosure - Commitments and Contingencies link:presentationLink link:calculationLink link:definitionLink 0000015 - Disclosure - Common Stock and Preferred Stock link:presentationLink link:calculationLink link:definitionLink 0000016 - Disclosure - Stock-Based Compensation link:presentationLink link:calculationLink link:definitionLink 0000017 - 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Disclosure - Stock-Based Compensation (Tables) link:presentationLink link:calculationLink link:definitionLink 0000027 - Disclosure - Net Loss per Share (Tables) link:presentationLink link:calculationLink link:definitionLink 0000028 - Disclosure - Nature of the Business - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 0000029 - Disclosure - Marketable Securities - Investment Profile (Details) link:presentationLink link:calculationLink link:definitionLink 0000030 - Disclosure - Marketable Securities - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 0000031 - Disclosure - Fair Value Measurements - Summary of Financial Assets Measured at Fair Value on a Recurring Basis (Details) link:presentationLink link:calculationLink link:definitionLink 0000032 - Disclosure - Accrued Expenses - Summary of Accrued Expenses (Details) link:presentationLink link:calculationLink link:definitionLink 0000033 - Disclosure - 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Disclosure - Stock-Based Compensation - Summary of Stock-Based Compensation Expense (Details) link:presentationLink link:calculationLink link:definitionLink 0000041 - Disclosure - Net Loss per Share - Summary of antidilutive securities excluded from computation of earnings per share (Details) link:presentationLink link:calculationLink link:definitionLink 0000042 - Disclosure - Related Party Transactions - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 0000043 - Disclosure - Restructuring (Details) link:presentationLink link:calculationLink link:definitionLink