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Pertuzumab

Phase 2

Breast Cancer | Small molecule | Oncology |MacroGenics, Inc.|Last Updated: Nov 18, 2025

Target and mechanism

Molecular targetERBB2
Target classInhibitor
ModalitySmall molecule

Success Probability

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Market & Valuation

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Trial Design

RandomizedCONTROLLEDDMCBiomarker
Total Trials1
Total Enrollment174

FDA Designations

No designations recorded

Clinical trial landscape

Pertuzumab · 1 trial · 4 indications

Phase 2 1
NCT04425018MARGetuximab Or Trastuzumab (MARGOT)Breast Cancer
ACTIVE NOT_RECRUITING174 Analytics
PHASE2ACTIVE NOT_RECRUITING
MARGetuximab Or Trastuzumab (MARGOT)
Breast CancerUnlock trial analytics

Study Endpoints

Primary Endpoints

Pathologic Complete Response (pCR)
12 weeks

Compare the percentage of pathologic complete response (pCR) between patients treated with neoadjuvant TMP versus THP. Subject was considered a pCR responder if they achieved RCB 0 (no residual disease at surgery) and did not receive any additional non-protocol neoadjuvant treatment. Subject was considered a pCR non-responder if they did not achieve RCB 0 (RCB I, II, or III, or did not receive surgery) or if they received additional non-protocol neoadjuvant therapy. RCB is used to assess the response to neoadjuvant chemotherapy in breast cancer patients and is in a scale of 0 to 3, defined using established guidelines (Symmans et al. JCO 2007; M.D Anderson http://www.mdanderson.org/breastcancer\_RCB). Higher RCB score indicates more tumor burden remaining, thus worse outcome. RCB in this trial was determined according to local pathology review.

Secondary Endpoints

Rate of Pathologic Complete Response in Hormone Receptor Positive (HR+) Subjects
12 weeks
Rate of Pathologic Complete Response in Hormone Receptor Negative (HR-) Subjects
12 weeks
Residual Cancer Burden (RCB) Scores
12 weeks
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Study Design & Arms

AllocationRANDOMIZED
MaskingNONE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Paclitaxel + Pertuzumab + MargetuximabEXPERIMENTALThe research study procedures include screening for eligibility and study treatment including laboratory evaluations, two mandatory research biopsies and follow up visits.Cycle=21 days * Paclitaxel- via IV, Day 1,8,15 of each cycle * Margetuximab via IV, Day 1 of each cycle * Pertuzumab via IV, Day 1 of each cycle
Paclitaxel + Pertuzumab + TrastuzumabEXPERIMENTALThe research study procedures include screening for eligibility and study treatment including laboratory evaluations, two mandatory research biopsies and follow up visits.Cycle=21 days * Paclitaxel- via IV, Day 1,8,15 of each cycle * Pertuzumab via IV, Day 1 of each cycle * Trastuzumab via IV, Day 1 of each cycle

Interventions

NameTypeDescription
PaclitaxelDRUGPre-determined dose administered via IV, Day 1,8,15 of each cycle 4 study cycles, or 12 weeks.
PertuzumabDRUGPre-determined dose administered via IV - Day 1 of each 21- day cycle 4 study cycles, or 12 weeks.
MargetuximabDRUGPre-determined dose administered by IV - Day 1 of each 21- day cycle 4 study cycles, or 12 weeks.
TrastuzumabDRUGPre-determined dose administered via IV Day 1 of each 21- day cycle for 4 study cycles, or 12 weeks.
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Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites14

Inclusion Criteria: * Stage II or III (according to AJCC cancer staging manual anatomic staging table, 8th edition) histologically confirmed invasive carcinoma of the breast. A minimum tumor size of 1.5 cm (in breast mass or axillary lymph node) determined by physical exam or imaging (whichever is ...

Countries:United States
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Competitive Landscape -Breast Cancer 402 trials

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 Pertuzumab

What is Pertuzumab used for in breast cancer?

Pertuzumab is an investigational antibody being studied for the treatment of breast cancer, specifically in patients with HER2-positive, stage II or stage III breast cancer. It is currently in Phase 2 clinical development and has not been approved by regulatory authorities.

What does Pertuzumab target?

Pertuzumab is a monoclonal antibody (mab) that targets the HER2 receptor, which is overexpressed in HER2-positive breast cancers. By binding to HER2, it is designed to interfere with cancer cell growth and survival signals, though its full mechanism is still under investigation in clinical trials.

Who makes Pertuzumab?

Pertuzumab is being developed by MacroGenics, Inc., a biopharmaceutical company traded on the NASDAQ under the ticker symbol MGNX. The company is conducting clinical trials to evaluate the drug's safety and efficacy in breast cancer patients.

What phase is Pertuzumab in?

Pertuzumab is currently in Phase 2 clinical development. It is an investigational drug, meaning it has not yet been approved by the FDA or other regulatory agencies, and its safety and efficacy are still being evaluated in clinical trials.

What clinical trials is Pertuzumab in?

Pertuzumab is being studied in the MARGetuximab Or Trastuzumab (MARGOT) trial, registered as NCT04425018. This Phase 2, randomized, controlled trial is enrolling 174 patients with HER2-positive stage II or stage III breast cancer in the United States, and it is currently active but not recruiting.

Is Pertuzumab the same as Margetuximab?

No, Pertuzumab is not the same as Margetuximab. The MARGOT trial (NCT04425018) compares Pertuzumab against Margetuximab or Trastuzumab as treatment options for HER2-positive breast cancer, indicating they are distinct investigational antibodies being evaluated in the same study.