Commitments and Contingencies - Additional Information (Details)		1 Months Ended	12 Months Ended
	Sep. 27, 2017 USD ($)	Sep. 30, 2018 Patent	Dec. 31, 2018 USD ($) Term	Apr. 01, 2018 ft²	Mar. 06, 2018 ft²
Private Acer | Pending Litigation | Piper Jaffray & Co.
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
Assistance Publique – Hôpitaux de Paris (“AP-HP”) | License Agreement
Loss Contingencies [Line Items]
Agreement entered date		2018-09
Number of patent applications | Patent		3
Assistance Publique – Hôpitaux de Paris (“AP-HP”) | Private Acer | License Agreement
Loss Contingencies [Line Items]
Agreement entered date			2016-08
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
Rent expense			$ 91,708
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
Rent expense			$ 46,744
Maximum additional periods of option to extend the bend term | Term			2
Option to extend bend term for duration period			3 years