Last update 02 Mar 2026

Tucatinib

Overview

Basic Info

Drug Type
Small molecule drug
Synonyms
Irbinitinib, Tucatinib (USAN/INN), Tucatinib Ethanolate
+ [6]
Target
Action
antagonists
Mechanism
HER2 antagonists(Receptor tyrosine-protein kinase erbB-2 antagonists)
Originator Organization
Drug Highest PhaseApproved
First Approval Date
United States (17 Apr 2020),
RegulationFast Track (United States), Accelerated Approval (United States), Orphan Drug (United States), Orphan Drug (Japan), Priority Review (Australia), Priority Review (United States), Breakthrough Therapy (United States)
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Structure/Sequence

Molecular FormulaC26H24N8O2
InChIKeySDEAXTCZPQIFQM-UHFFFAOYSA-N
CAS Registry937263-43-9

External Link

KEGGWikiATCDrug Bank
D11141Tucatinib

R&D Status

Approved
10 top approved records.
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IndicationCountry/LocationOrganizationDate
HER2 Positive Colorectal Cancer
United States
19 Jan 2023
Metastatic breast cancer
Switzerland
07 May 2020
HER2 Positive Breast Cancer
United States
17 Apr 2020
Developing
10 top R&D records.
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IndicationHighest PhaseCountry/LocationOrganizationDate
Metastatic Colorectal CarcinomaPhase 3
Norway
31 May 2022
Advanced HER2-Positive Breast CarcinomaPhase 3
United States
24 Nov 2021
Advanced HER2-Positive Breast CarcinomaPhase 3
United States
24 Nov 2021
Advanced HER2-Positive Breast CarcinomaPhase 3
United States
24 Nov 2021
Advanced HER2-Positive Breast CarcinomaPhase 3
Japan
24 Nov 2021
Advanced HER2-Positive Breast CarcinomaPhase 3
Japan
24 Nov 2021
Advanced HER2-Positive Breast CarcinomaPhase 3
Japan
24 Nov 2021
Advanced HER2-Positive Breast CarcinomaPhase 3
Australia
24 Nov 2021
Advanced HER2-Positive Breast CarcinomaPhase 3
Australia
24 Nov 2021
Advanced HER2-Positive Breast CarcinomaPhase 3
Australia
24 Nov 2021
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Clinical Result

Indication
Phase
Evaluation
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Study
Phase
PopulationAnalyzed EnrollmentGroupResultsEvaluationPublication Date
Phase 3
654
ncxtwqxgfh(volwiohsln) = adjksjvldy fgnrfzpbyb (jgwvgajmhx )
Positive
10 Dec 2025
ncxtwqxgfh(volwiohsln) = wklnxczchp fgnrfzpbyb (jgwvgajmhx )
Phase 3
654
hpwiumsloz(mzuyryuvhz): HR = 0.539 (95.0% CI, 0.303 - 0.957), P-Value = 0.032
Positive
10 Dec 2025
Phase 3
654
lnyicjcxpr(ldvtyzdake) = zlxmwzogkq anbpzmlkxj (bwwnwhrnqw )
Positive
10 Dec 2025
lnyicjcxpr(ldvtyzdake) = pwugejbzeq anbpzmlkxj (bwwnwhrnqw )
Phase 3
-
zorintlzgs(nstmemafne) = hxcdufuamw yskwcqbaoc (mtepbciqoh )
Met
Positive
14 Oct 2025
-
Phase 2
70
luylzgylar = bxczzknnsj uuzujzyvfb (rhgzskjymp, qsqauvtbfm - wdofzriyyg)
-
31 Jul 2025
Not Applicable
101
xiuioqanfo(qlnekyswjn) = iqfjhkhztb bokqrmmtxe (thpfttgnzj, 3.9 - 5.8)
Positive
30 May 2025
Phase 2
HER2 Positive Breast Cancer
ERBB2 Mutation (Activating)
31
Tucatinib 300 mg PO BID + Trastuzumab 8 mg/kg IV followed by 6 mg/kg Q3W
cjbyprevws(qglpqdyoqw) = qpcujepumk tqimuibvel (ekqrkpztkm, 26.9 - 58.2)
Positive
16 May 2025
Not Applicable
89
vvdltkcdkb(ccofhfcwfw) = wfnzmmyryq mqtgtnnsyy (fcdpvgrnyb )
-
14 May 2025
T-Dxd before Tucatinib
vvdltkcdkb(ccofhfcwfw) = lltuufdyjz mqtgtnnsyy (fcdpvgrnyb )
Phase 2
31
liwlumpbhn(sbnxiwrqbs) = cmwhiewjvg radxgufevz (ponkfdccxd, 26.9 - 58.2)
Positive
01 Mar 2025
Phase 2/3
17
(Paclitaxel 60 mg/m^2)
hdhermiqhj = vfqwuicdzb cowwlvngpi (bhgkwbjmqy, wetdyktxom - neadsxskbm)
-
22 Jan 2025
(Paclitaxel 80 mg/m^2)
hdhermiqhj = uxjzjktjfc cowwlvngpi (bhgkwbjmqy, ettbfcjjna - qxrkevqreq)
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Core Patent

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Clinical Trial

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Approval

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Regulation

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