INCOME TAXES - Schedule of net deferred tax asset (liability) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Deferred tax assets and (liabilities)
Net operating losses	$ 26,500	$ 20,243
Research and development expenses	15,494	13,431
Research and development credit	11,636	5,869
Accrued expenses	612	564
Stock-based compensation	348	168
Other	155	148
Intangible assets	5,589	5,511
Gross deferred tax asset	60,334	45,934
Valuation allowance	(60,330)	(45,931)
Net deferred tax asset	4	3
Fixed assets	(4)	(3)
Deferred tax liabilities	(4)	(3)
Net deferred tax asset (liability)	0	$ 0
Accrued interest and penalties	0
Unrecognized tax benefits, income tax penalties and interest expense	$ 0