5.	Balance Sheet Components

Cash and Cash Equivalents

Cash and cash equivalents consist of the following:


	December 31,
	2016		2015
	(in thousands)
Cash	$	1,964	$	1,576
Cash equivalents:
Money market accounts		107,043		148,604

Total cash and cash equivalents	$	109,007	$	150,180

Prepaid Expenses and Other Current Assets

Prepaid expenses and other current assets consist of the following:


	December 31,
	2016		2015
	(in thousands)
Prepaid research and development project costs	$	515	$	878
Prepaid insurance		511		480
Other receivables		70		44
Other		247		271

Total prepaid expenses and other current assets	$	1,343	$	1,673

Property and Equipment, net

Property and equipment, net consists of the following:


	December 31,
	2016			2015
	(in thousands)
Computer equipment	$	255		$	242
Software		242			126
Lab equipment		—			236
Leasehold improvements		110			79
Furniture and fixtures		45			5

Property and equipment, gross		652			688
Less: accumulated depreciation		(252	)		(122	)

Total property and equipment, net	$	400		$	566

Depreciation related to the Company’s property and equipment for the years ended December 31, 2016, 2015 and 2014 was $0.2 million, $0.1 million and $12,000, respectively.

During the year ended December 31, 2016, as a result of the decision to halt investment in PNT2258 and the DNAi platform, the Company recorded impairment charges of $0.1 million on its lab equipment (see Note 12).

Accrued Liabilities

Accrued liabilities consist of the following:


	December 31,
	2016		2015
	(in thousands)
Accrued employee related costs	$	2,084	$	1,529
Accrued research and development costs		1,600		4,318
Accrued restructuring costs (Note 12)		763		—
Accrued professional fees		381		933
Other		293		236

Total accrued liabilities	$	5,121	$	7,016