Note 4 - Accrued Expenses and Other Current Liabilities

12 Months Ended

Dec. 31, 2021

Notes to Financial Statements

Accounts Payable, Accrued Liabilities, and Other Liabilities Disclosure, Current [Text Block]

4. Accrued expenses and other current liabilities 

Accrued expenses and other current liabilities at December 31, 2021 and 2020 consist of the following components (in thousands):

	December 31,
	2021		2020
Accrued research and development	$	1,005	$	907
Accrued payroll and bonuses		606		426
Accrued legal, regulatory, professional and other		442		262
Accrued liabilities due to related party		109		78
Operating lease liability - current		96		118
Total accrued expenses and other current liabilities	$	2,258	$	1,791

Additionally, accounts payable includes $48,000 as of December 31, 2021 and 2020, respectively, for a related party payable to HPI.