CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2026	Dec. 31, 2025
Current assets:
Cash and cash equivalents	$ 106,270	$ 48,297
Prepaid expenses and other current assets	3,376	6,753
Total current assets	109,646	55,050
Property and equipment, net	804	979
Right-of-use asset, operating leases	4,770	5,100
Restricted cash and restricted cash equivalents	647	647
Total assets	115,867	61,776
Current liabilities:
Accounts payable	1,565	879
Accrued expenses and other current liabilities	3,836	4,232
Venture debt, current portion	0	6,235
Total current liabilities	5,401	11,346
Lease liability, net of current portion	4,561	4,943
Venture debt, net of current portion	0	3,473
Total liabilities	9,962	19,762
Commitments and contingencies (Note 10)
Stockholders' equity:
Preferred stock, $0.0001 par value; 10,000,000 shares authorized, no shares issued and outstanding at June 30, 2026 and December 31, 2025	0	0
Common stock, $0.0001 par value; 400,000,000 shares authorized,23,736,600 and 12,858,047 shares issued and outstanding at June 30, 2026 and December 31, 2025, respectively	3	2
Additional paid-in capital	327,450	247,005
Accumulated deficit	(221,548)	(204,993)
Total stockholders' equity	105,905	42,014
Total liabilities and stockholders' equity	$ 115,867	$ 61,776

Accrued Expenses And Other Liabilities Current

No definition available.

Name:	qttb_AccruedExpensesAndOtherLiabilitiesCurrent
Namespace Prefix:	qttb_
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).