7.	Accrued Expense

As of December 31, 2017, Current Liabilities included accrued expenses of $0.7 million, comprised primarily of accrued clinical and preclinical expenses of $0.4 million, employee vacation and bonus expenses of $0.1 million, an annual license maintenance fee of $0.1 million and other accrued expenses of $0.1 million. As of December 31, 2016, Current Liabilities included accrued expense of $1.0 million, comprised primarily of accrued employee vacation and bonus expenses of $0.4 million, laboratory expenses of $0.2 million, clinical and preclinical expenses of $0.2 million, an annual license maintenance fee of $0.1 million and other accrued expenses of $0.1 million.