101 - Document - Document and Entity Information
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103 - Statement - Balance Sheets
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104 - Statement - Balance Sheets (Parenthetical)
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105 - Statement - Statements of Operations
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106 - Statement - Statements of Convertible Preferred Stock and Stockholders' Deficit
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107 - Statement - Statements of Convertible Preferred Stock and Stockholders' Deficit (Parenthetical)
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108 - Statement - Statements of Cash Flows
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109 - Disclosure - Description of Business
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110 - Disclosure - Summary of Significant Accounting Policies
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111 - Disclosure - Fair Value of Financial Instruments
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112 - Disclosure - Property and Equipment, Net
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113 - Disclosure - Related Party Convertible Promissory Notes
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114 - Disclosure - Convertible Preferred Stock Warrants
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115 - Disclosure - Series A Warrants and Series B Warrants
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116 - Disclosure - Line of Credit
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117 - Disclosure - Commitments
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118 - Disclosure - Capital Stock
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119 - Disclosure - Stock Option Compensation
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120 - Disclosure - GSK License Agreement
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121 - Disclosure - Income Taxes
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122 - Disclosure - Defined Contribution Plan
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123 - Disclosure - Subsequent Events
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124 - Disclosure - Summary of Significant Accounting Policies (Policies)
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125 - Disclosure - Description of Business (Tables)
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126 - Disclosure - Summary of Significant Accounting Policies (Tables)
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127 - Disclosure - Fair Value of Financial Instruments (Tables)
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128 - Disclosure - Property and Equipment, Net (Tables)
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129 - Disclosure - Convertible Preferred Stock Warrants (Tables)
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130 - Disclosure - Series A Warrants and Series B Warrants (Tables)
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131 - Disclosure - Capital Stock (Tables)
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132 - Disclosure - Stock Option Compensation (Tables)
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133 - Disclosure - Income Taxes (Tables)
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134 - Disclosure - Description of Business - Additional Information (Detail)
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135 - Disclosure - Description of Business - Summary of Initial Public Offering (Detail)
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136 - Disclosure - Summary of Significant Accounting Policies - Additional Information (Detail)
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137 - Disclosure - Summary of Significant Accounting Policies - Schedule of Calculation of Basic Earnings per Share and Diluted Earnings per Share (Detail)
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138 - Disclosure - Summary of Significant Accounting Policies - Schedule of Potentially Dilutive Securities Outstanding Excluded from Computations of Diluted Weighted-Average Shares Outstanding (Detail)
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139 - Disclosure - Fair Value of Financial Instruments - Summary of Financial Instruments Measured at Fair Value on Recurring Basis (Detail)
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140 - Disclosure - Property and Equipment, Net - Schedule of Property and Equipment (Detail)
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141 - Disclosure - Property and Equipment, Net - Additional Information (Detail)
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142 - Disclosure - Related Party Convertible Promissory Notes - Additional Information (Detail)
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143 - Disclosure - Convertible Preferred Stock Warrants - Additional Information (Detail)
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144 - Disclosure - Convertible Preferred Stock Warrants - Fair Value of Convertible Preferred Stock Warrant Liability (Detail)
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145 - Disclosure - Convertible Preferred Stock Warrants - Summary of Outstanding Convertible Preferred Stock Warrants (Detail)
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146 - Disclosure - Series A Warrants and Series B Warrants - Additional Information (Detail)
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147 - Disclosure - Series A Warrants and Series B Warrants - Fair Value of Convertible Preferred Stock Warrant Liability (Detail)
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148 - Disclosure - Series A Warrants and Series B Warrants - Summary of Outstanding Series B Warrants and Fair Market Values (Detail)
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149 - Disclosure - Line of Credit - Additional Information (Detail)
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150 - Disclosure - Commitments - Additional Information (Detail)
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151 - Disclosure - Capital Stock - Additional Information (Detail)
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152 - Disclosure - Capital Stock - Summary of Common Stock Issued and Outstanding (Detail)
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153 - Disclosure - Capital Stock - Summary of Convertible Preferred Stock (Detail)
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154 - Disclosure - Stock Option Compensation - Stock Option Plan - Additional Information (Detail)
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155 - Disclosure - Stock Option Compensation - Summary of Stock Based Compensation Expense (Detail)
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156 - Disclosure - Stock Option Compensation - Schedule of Fair Value of Award Granted Using Black-Scholes Option Pricing Model (Detail)
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157 - Disclosure - Stock Option Compensation - Summary of Stock Option Transactions (Detail)
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158 - Disclosure - GSK License Agreement - Additional Information (Detail)
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159 - Disclosure - Income Taxes - Reconciliation of Income Tax Expense by Applying Statutory U.S. Federal Income Tax Rate to Income Before Income Taxes (Detail)
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160 - Disclosure - Income Taxes - Reconciliation of Income Tax Expense by Applying Statutory U.S. Federal Income Tax Rate to Income Before Income Taxes (Parenthetical) (Detail)
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161 - Disclosure - Income Taxes - Significant Components of Company's Deferred Tax Assets and Liabilities (Detail)
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162 - Disclosure - Income Taxes - Additional Information (Detail)
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163 - Disclosure - Income Taxes - Summary of Gross Unrecognized Tax Benefits (Detail)
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164 - Disclosure - Defined Contribution Plan - Additional Information (Detail)
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165 - Disclosure - Subsequent Events - Additional Information (Detail)
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