Note 3 - Balance Sheet Details (Tables)

3 Months Ended

Mar. 31, 2024

Table Text Block [Abstract]

Summary of Prepaid Expenses and Other Current Assets

Prepaid expenses and other current assets consisted of the following (in thousands):

	March 31,		December 31,
	2024		2023
Prepaid insurance	$	294	$	428
Other receivables		153		148
Prepaid subscriptions and fees		173		138
Prepaid software licenses		36		64
Deferred equity issuance costs		75		112
Prepaid other		6		6
	$	737	$	896

Schedule of Other Noncurrent Assets

Other noncurrent assets consisted of the following (in thousands):

	March 31,		December 31,
	2024		2023
Prepaid insurance, less current portion	$	426	$	478
Other noncurrent assets		12		12
	$	438	$	490

Schedule Of Accrued Liabilities

Accrued liabilities consisted of the following (in thousands):

	March 31,		December 31,
	2024		2023
Accrued accounts payable	$	89	$	166
Accrued clinical trial expenses		10		20
Accrued director stipends		35		106
Accrued severance and benefits (Note 8)		35		131
Accrued joint development expenses (Note 7)		1,180		98
Current portion of contingent consideration obligation (Note 4)		143		143
Accrued other		178		167
	$	1,670	$	831