Commitments - Additional Information (Details)			9 Months Ended
	Sep. 19, 2018 Patent	Sep. 27, 2017 USD ($)	Sep. 30, 2018 USD ($) Term	Jun. 30, 2018 USD ($)	Apr. 01, 2018 ft²	Mar. 06, 2018 ft²
Assistance Publique – Hôpitaux de Paris (“AP-HP”) | License Agreement
Loss Contingencies [Line Items]
Date of agreement	Sep. 19, 2018
Number of patent applications | Patent	3
Newton Lease
Loss Contingencies [Line Items]
Lease agreement date			Mar. 06, 2018
Square feet of office space leased | ft²						2,760
Lease commencement date			Oct. 01, 2018
Lease expiration date			Sep. 30, 2021
Remaining commitment for rent			$ 313,560
Bend Lease
Loss Contingencies [Line Items]
Lease agreement date			Apr. 01, 2018
Square feet of office space leased | ft²					2,288
Lease commencement date			Apr. 01, 2018
Lease expiration date			Mar. 31, 2021
Remaining commitment for rent				$ 124,488
Maximum additional periods of option to extend the bend term | Term			2
Option to extend bend term for duration period			3 years
Private Acer | Assistance Publique – Hôpitaux de Paris (“AP-HP”) | License Agreement
Loss Contingencies [Line Items]
Date of agreement			Aug. 03, 2016
Pending Litigation | Piper Jaffray & Co. | Private Acer
Loss Contingencies [Line Items]
Loss contingency payable fees		$ 1,097,207
Loss contingency closing date		Sep. 19, 2017
Financing aggregate consideration		$ 15,700,000
Reimbursement expenses		$ 67,496