As of December 31, 2018, Current Liabilities included accrued expenses of $0.3 million, comprised primarily of accrued preclinical expenses of $0.1 million, employee vacation and bonus expenses of $0.1 million and legal and professional fees of $0.1 million. 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.