Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2018

Accounting Policies [Abstract]

Summary of Useful Lives of Principal Classes of Assets

Depreciation expense is computed on a straight-line method over the estimated useful lives of the respective assets, as follows:

	Useful Life (Years)
Computers and software	3 years
Office furniture and equipment	5 – 12 years
Laboratory equipment	5 years
Leasehold improvement	Over the shorter of the expected lease term or estimated useful life

Upon sale or disposition of property and equipment, the cost and related accumulated depreciation are eliminated from the accounts and any resultant gain or loss is credited or charged to operations.