Related Parties	9 Months Ended
Sep. 30, 2018
Related Party Transactions [Abstract]
Related Parties	11. Related Parties Dr. Craig Crews, founder of the Company and the Chief Scientific Advisor to the Company, is a common unit holder in the Company and has a consulting agreement with the Company. The Company entered into an amendment to the amended and restated consulting agreement with Professor Crews, which became effective upon the closing of the IPO and continues in effect for three years. Pursuant to the amendment, Professor Crews will be paid $20,833 per month for his services. During nine months ended September 30, 2018 and 2017, the Company paid Professor Crews $113,611 and $112,500, respectively, related to his consulting agreement. In connection with the conversion of incentive units, the Company also granted Professor Crews 235,150 stock options to purchase common stock at an exercise price of $16.00 per share, vesting over three years. During the nine months ended September 30, 2018 and 2017, the Company also paid Yale University, a common unit holder in the Company, $107,289 and $102,063, respectively, for reimbursable patent costs. In July 2016, the Company entered into a Corporate Sponsored Research Agreement (SRA) with Yale University, under the direction of Professor Crews, which was amended in April 2018. The SRA requires quarterly payments of $101,161 through April 2018, in exchange for performing the research on the agreed upon program and related research reports. The amended SRA extended the agreement until April 2021 and amended the scope of work. The amended SRA requires quarterly payments of $250,000 through the end of the agreement. The total payments made under the SRA for the nine months ended September 30, 2018 and 2017 were $601,161 and $303,482, respectively.

11. Related Parties

Dr. Craig Crews, founder of the Company and the Chief Scientific Advisor to the Company, is a common unit holder in the Company and has a consulting agreement with the Company. The Company entered into an amendment to the amended and restated consulting agreement with Professor Crews, which became effective upon the closing of the IPO and continues in effect for three years. Pursuant to the amendment, Professor Crews will be paid $20,833 per month for his services. During nine months ended September 30, 2018 and 2017, the Company paid Professor Crews $113,611 and $112,500, respectively, related to his consulting agreement. In connection with the conversion of incentive units, the Company also granted Professor Crews 235,150 stock options to purchase common stock at an exercise price of $16.00 per share, vesting over three years.

During the nine months ended September 30, 2018 and 2017, the Company also paid Yale University, a common unit holder in the Company, $107,289 and $102,063, respectively, for reimbursable patent costs. In July 2016, the Company entered into a Corporate Sponsored Research Agreement (SRA) with Yale University, under the direction of Professor Crews, which was amended in April 2018. The SRA requires quarterly payments of $101,161 through April 2018, in exchange for performing the research on the agreed upon program and related research reports. The amended SRA extended the agreement until April 2021 and amended the scope of work. The amended SRA requires quarterly payments of $250,000 through the end of the agreement. The total payments made under the SRA for the nine months ended September 30, 2018 and 2017 were $601,161 and $303,482, respectively.