Summary of significant accounting policies (Tables)

12 Months Ended

Dec. 31, 2019

Summary of significant accounting policies

Schedule of estimated useful life of each asset

	Estimated useful life
Leasehold improvements(1)	5 years
Laboratory equipment	3 - 10 years
Furniture and fixtures	3 - 10 years
Computer equipment and software	3 - 4 years

(1) In the course of the application of ASC 842, the estimated useful life of the leasehold improvements was adjusted to the shorter period of economic useful life of the asset and lease term.