Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2026	Dec. 31, 2025
Current Assets
Cash and cash equivalents	$ 1,124	$ 7,383
Other current assets	257	284
Total current assets	1,381	7,667
Operating lease right-of-use asset, net	19	33
Property and equipment, net	95	138
TOTAL ASSETS	1,495	7,838
Current Liabilities
Accounts payable	1,116	1,317
Operating lease liability, current	19	28
Promissory notes	1,692	3,182
Other current liabilities	161	246
Total current liabilities	2,988	4,773
Non-Current Liabilities
Derivative financial liabilities		1
Operating lease liability, non-current		5
Loans from stockholders	248	231
Total liabilities	3,236	5,010
Commitments and contingent liabilities (Note 4)
Stockholders’ Equity (Deficit)
Common Stock of $0.001 par value 250,000,000 shares authorized as of June 30, 2026 and as of December 31, 2025; 6,259,279 and 910,688 shares issued and outstanding as of June 30, 2026 and December 31, 2025, respectively	6	1
Additional paid-in capital	158,187	151,080
Receipts on account of shares		3,544
Accumulated other comprehensive income	52	41
Accumulated deficit	(159,986)	(151,838)
Total stockholders’ equity (deficit)	(1,741)	2,828
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY (DEFICIT)	$ 1,495	$ 7,838

Receipts on account of shares.

No definition available.

Name:	GCTK_ReceiptsOnAccountOfShares
Namespace Prefix:	GCTK_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).