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Asciminib and Trastuzumab

Phase 1

HER2+ Metastatic Breast Cancer | Monoclonal antibody | Oncology |Novartis AG|Last Updated: May 6, 2026

Target and mechanism

Molecular targetABL1, BCR
Target classInhibitor
ModalityMonoclonal antibody

Also known as asciminib, Asciminib

Success Probability

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Market & Valuation

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Trial Design

UNCONTROLLEDDMCBiomarker
Total Trials1
Total Enrollment42

FDA Designations

No designations recorded

Clinical trial landscape

Asciminib and Trastuzumab · 1 trial · 1 indication

Phase 1 1
NCT07136428Asciminib in HER2+ Breast Cancer Brain MetastasesHER2+ Metastatic Breast Cancer
NOT YET_RECRUITING42 Analytics
PHASE1NOT YET_RECRUITING
Asciminib in HER2+ Breast Cancer Brain Metastases
HER2+ Metastatic Breast CancerUnlock trial analytics

Study Endpoints

Primary Endpoints

Number of participants with a dose-limiting toxicity at each dose level
Day 1 of treatment until 30 days post last dose

Safety of administering asciminib in combination with trastuzumab by measuring number of participants with a dose-limiting toxicity at each dose level

Number of participants with a complete response (CR) or partial response (PR)
Day 1 of treatment through up to 112 weeks

Efficacy at maximum tolerated dose (MTD) determined by the number of participants with a complete response (CR) or partial response (PR) as determined by Response Assessment in Neuro-Oncology (RANO) Criteria for Brain Metastases (RANO-BM).

Secondary Endpoints

Median time to progression
Day 1 of treatment through up to 112 weeks
Progression Free Survival (PFS)
Day 1 of treatment through up to 110 weeks
Overall Survival (OS)
Day 1 of treatment through up to 110 weeks
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Study Design & Arms

AllocationNA
MaskingNONE
ModelSINGLE_GROUP
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Asciminib TrastuzumabEXPERIMENTALCombination of asciminib and trastuzumab

Interventions

NameTypeDescription
Asciminib and TrastuzumabCOMBINATION_PRODUCTEach study treatment cycle will last 21 days. Asciminib will be taken orally every day during the treatment period at the dose determined as the MTD during the safety lead-in in combination with trastuzumab at a standard dose of 6mg/kg IV. Asciminib dose will begin at 80 mg daily (dose level 1), with a potential range from 40 mg daily (dose level -1A, with trastuzumab) to 200 mg bid (dose level 3, with trastuzumab) depending on the results of the safety lead-in. Trastuzumab will be given intravenously (IV) or subcutaneously (SQ) on Day 1 of each 21 day cycle.
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Eligibility Criteria

Age Range18 Years to N/A
SexFEMALE
Healthy VolunteersNo

Inclusion Criteria: * Age ≥18 years at the time of consent * Patients with HER2+ metastatic breast cancer with at least one progressive or new brain metastasis measuring \>5mm; prior local therapy to other intracranial lesions allowed * At least 1 prior standard of care therapy for metastatic disea...

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Competitive Landscape -Breast Cancer 402 trials (matched to "HER2+ Metastatic Breast Cancer")

Top 20 of 92 competitors

CompanyTickerTrialsLead PhaseDrugs
AstraZeneca PLCAZN47PHASE3Fulvestrant, Capivasertib
Merck & Co., Inc.MRK12PHASE3Pembrolizumab, Paclitaxel, Doxorubicin, Epirubicin, Cyclophosphamide
Eli Lilly and CompanyLLY27PHASE3Abemaciclib, Standard Adjuvant Endocrine Therapy
BioNTech SE Sponsored ADRBNTX7PHASE3DB-1303/BNT323, T-DM1
Gilead Sciences, Inc.GILD13PHASE3Sacituzumab Govitecan-hziy, Eribulin, Capecitabine Product, Gemcitabine, Vinorelbine
Novartis AG Sponsored ADRNVS30PHASE3Ribociclib
Pfizer Inc.PFE34PHASE3ARV-471, Fulvestrant
BeOne Medicines Ltd. Sponsored ADRONC5PHASE3BGB-43395, Letrozole, Abemaciclib, Palbociclib, Ribociclib
Olema Pharmaceuticals, Inc.OLMA5PHASE3Palazestrant, Fulvestrant, Anastrozole, Letrozole, Exemestane
Jazz Pharmaceuticals Public Limited CompanyJAZZ3PHASE3Zanidatamab, Trastuzumab, Eribulin, Vinorelbine, Gemcitabine
Celcuity Inc.CELC3PHASE3Gedatolisib, Palbociclib, Fulvestrant, Alpelisib
Relay Therapeutics, Inc.RLAY2PHASE3Zovegalisib, Capivasertib, Fulvestrant
GSK plc Sponsored ADRGSK2PHASE3Niraparib
Greenwich LifeSciences, Inc.GLSI1PHASE3GLSI-100
Bristol-Myers Squibb CompanyBMY5PHASE2Iza-bren, Nab-paclitaxel, Paclitaxel, Capecitabine, Carboplatin
BriaCell Therapeutics CorpBCTX2PHASE3SV-BR-1-GM, Cyclophosphamide, Interferon infiltration of the inoculation site, Retifanlimab, Treatment of Physician's Choice
Incyte CorporationINCY4PHASE2Ruxolitinib, Capecitabine, Regorafenib
Natera, Inc.NTRA3PHASE2Discontinuation of the anti-HER2 maintenance therapy
Puma Biotechnology, Inc.PBYI3PHASE2Neratinib, Loperamide, Colesevelam
Atossa Therapeutics, Inc.ATOS1PHASE2endoxifen, goserelin
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Frequently asked questions about Asciminib and Trastuzumab

What is Asciminib used for?

Asciminib is an investigational small molecule being studied for chronic myelogenous leukemia, including Philadelphia chromosome-positive chronic myeloid leukemia in chronic phase, and for HER2+ metastatic breast cancer. It is also being studied in patients with renal impairment. Asciminib is not approved and remains in clinical development.

What does Asciminib target?

Asciminib is a kinase inhibitor, belonging to the -nib class of drugs. It is being studied in chronic myelogenous leukemia and other conditions where kinase signaling plays a role. The specific molecular target is not disclosed in available information.

Who makes Asciminib?

Asciminib is developed by Novartis AG, a pharmaceutical company listed on the New York Stock Exchange under the ticker NVS. Novartis is conducting clinical trials of Asciminib across multiple countries.

What phase is Asciminib in?

Asciminib has completed Phase 1, Phase 2, and Phase 3 trials. A Phase 3 study compared Asciminib to bosutinib in patients with chronic myelogenous leukemia previously treated with two or more tyrosine kinase inhibitors. Asciminib remains investigational and is not FDA approved.

What clinical trials is Asciminib in?

Asciminib has been studied in several completed trials. NCT02081378 was a Phase 1 study in chronic myelogenous leukemia and Philadelphia chromosome-positive acute lymphoblastic leukemia. NCT03106779 was a Phase 3 trial versus bosutinib. NCT03605277 examined pharmacokinetics in renal impairment, and NCT04795427 was a Phase 2 study in China.

Is Asciminib the same as Trastuzumab?

Asciminib is not the same as Trastuzumab. Asciminib is a small molecule kinase inhibitor, while Trastuzumab is a different type of agent. Asciminib is being studied for chronic myelogenous leukemia and HER2+ metastatic breast cancer, though the two drugs are distinct.