I-SPY TRIAL: Neoadjuvant and Personalized Adaptive Novel Agents to Treat Breast Cancer (I-SPY)

May 4, 2026 updated by: QuantumLeap Healthcare Collaborative

I-SPY Trial (Investigation of Serial Studies to Predict Your Therapeutic Response With Imaging And moLecular Analysis 2)

The purpose of this study is to further advance the ability to practice personalized medicine by learning which new drug agents are most effective with which types of breast cancer tumors and by learning more about which early indicators of response (tumor analysis prior to surgery via magnetic resonance imaging (MRI) images along with tissue and blood samples) are predictors of treatment success.

Study Overview

Status

Recruiting

Detailed Description

I-SPY2 will assess the efficacy of novel drugs in sequence with standard chemotherapy. The goal is identify treatment strategies for subsets on the basis of molecular characteristics (biomarker signatures) of their disease with high estimated pCR rate. As described for previous adaptive trials, novel regimens with sufficiently high activities alone and contribute to treatment strategies that show a high Bayesian predictive probability of being more effective than the dynamic control will graduate from the trial with their corresponding biomarker signature(s). Treatment strategies will be dropped if they show a low probability of improved efficacy with any biomarker signature. New drugs will enter as those that have undergone testing complete their evaluation.

Study Type

Interventional

Enrollment (Estimated)

5000

Phase

  • Phase 2

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact Backup

Study Locations

    • Alabama
      • Birmingham, Alabama, United States, 35294
        • Recruiting
        • University of Alabama at Birmingham
        • Principal Investigator:
          • Erica Stringer-Reasor, MD
    • Arizona
      • Scottsdale, Arizona, United States, 85259
        • Not yet recruiting
        • Mayo Clinic - Scottsdale
        • Contact:
          • Phone Number: 507-538-7623
        • Principal Investigator:
          • Donald Northfelt, MD
      • Tucson, Arizona, United States, 85724
        • Active, not recruiting
        • University of Arizona
    • California
      • Davis, California, United States, 95817
        • Recruiting
        • University of California - Davis, Comprehensive Cancer Center
        • Principal Investigator:
          • Mili Arora, MD
      • Duarte, California, United States, 91010
        • Recruiting
        • City of Hope
        • Contact:
          • Phone Number: 800-826-4673
        • Principal Investigator:
          • Hope Rugo, MD
      • La Jolla, California, United States, 92093-0698
        • Recruiting
        • University of California San Diego
        • Contact:
          • Phone Number: 858-822-6194
        • Contact:
        • Principal Investigator:
          • Anne Wallace, MD
      • Los Angeles, California, United States, 90033
        • Recruiting
        • University of Southern California
        • Contact:
        • Principal Investigator:
          • Evanthia Roussos Torres, MD
      • Newport Beach, California, United States, 92663
        • Recruiting
        • Hoag Memorial Hospital Presbyterian
        • Principal Investigator:
          • Chaitali Nangia, MD
      • San Francisco, California, United States, 94115
        • Recruiting
        • University of California San Francisco (UCSF)
        • Principal Investigator:
          • Amy Jo Chien, MD
        • Contact:
          • Clinical Research Coordinator
          • Phone Number: 415-443-4296
          • Email: ispycrc@ucsf.edu
    • Colorado
      • Aurora, Colorado, United States, 80045
        • Recruiting
        • University of Colorado Cancer Center
        • Contact:
          • Phone Number: 720-848-1622
        • Sub-Investigator:
          • Anthony Elias, MD
        • Principal Investigator:
          • Virgnia Borges, MD
    • Connecticut
      • New Haven, Connecticut, United States, 06510
        • Recruiting
        • Yale Cancer Center
        • Contact:
        • Sub-Investigator:
          • Tara Snaft, MD
        • Sub-Investigator:
          • Lajos Pusztai, MD
        • Principal Investigator:
          • Mariya Rozenblit, MD
    • District of Columbia
      • Washington D.C., District of Columbia, United States, 20007
        • Recruiting
        • Georgetown University Medical Center
        • Contact:
        • Principal Investigator:
          • Claudine Isaacs, MD
    • Florida
      • Tampa, Florida, United States, 33612
        • Recruiting
        • Moffitt Cancer Center
        • Principal Investigator:
          • Heather Han, MD
      • Tampa, Florida, United States, 33612
        • Recruiting
        • H. Lee Moffitt Cancer Center and Research Institute
        • Principal Investigator:
          • Hyo Heather Han, MD
    • Georgia
      • Atlanta, Georgia, United States, 30322
        • Recruiting
        • Winship Cancer Institute of Emory University
        • Principal Investigator:
          • Kevin Kalinsky, MD
    • Illinois
      • Chicago, Illinois, United States, 60453
        • Recruiting
        • University of Chicago
        • Contact:
          • Phone Number: 773-834-2756
        • Principal Investigator:
          • Rita Nanda, MD
      • Maywood, Illinois, United States, 60153
        • Recruiting
        • Loyola University
        • Contact:
          • Phone Number: 708-327-3102
        • Principal Investigator:
          • Kathy S Albain, MD
    • Kansas
      • Westwood, Kansas, United States, 66205
        • Active, not recruiting
        • University of Kansas
    • Michigan
      • Lansing, Michigan, United States, 48912
        • Recruiting
        • Herbert-Herman Cancer Center, Sparrow Hospital
        • Principal Investigator:
          • Brittani Thomas, DO
    • Minnesota
      • Minneapolis, Minnesota, United States, 55455
        • Recruiting
        • University of Minnesota
        • Contact:
          • Phone Number: 612-626-8487
        • Principal Investigator:
          • Douglas Yee, MD
      • Rochester, Minnesota, United States, 55905
        • Recruiting
        • Mayo Clinic
        • Contact:
          • Phone Number: 507-538-7623
        • Principal Investigator:
          • Judy C Boughey, MD
      • Saint Louis Park, Minnesota, United States, 55416
        • Recruiting
        • Metro Minnesota Community Oncology Research Consortium, Hennepin County Medical Center
        • Principal Investigator:
          • Satya Bommakanti, MD
    • New Jersey
      • New Brunswick, New Jersey, United States, 08903
        • Recruiting
        • Rutgers Cancer Institute of New Jersey
        • Contact:
          • Phone Number: 732-235-7356
        • Principal Investigator:
          • Coral Omene, MD, PhD
    • New York
      • Buffalo, New York, United States, 14263
        • Recruiting
        • Roswell Park Cancer Institute
        • Principal Investigator:
          • Ellis Levine, MD
      • New York, New York, United States, 10032
        • Recruiting
        • Columbia University Medical Center
        • Principal Investigator:
          • Meghana Trivedi, MD
      • New York, New York, United States, 10016
        • Recruiting
        • Laura and Isaac Perlmutter Cancer Center / NYU Langone Health
        • Principal Investigator:
          • Nancy Chan, MD
        • Contact:
      • Rochester, New York, United States, 14642
      • The Bronx, New York, United States, 10467
        • Recruiting
        • Montefiore Medical Center
        • Principal Investigator:
          • Jesus D Anampa
    • North Carolina
      • Winston-Salem, North Carolina, United States, 27157
        • Recruiting
        • Wake Forest Baptist Comprehensive Cancer Center
        • Contact:
        • Principal Investigator:
          • Marissa Howard-McNatt, MD
    • Ohio
      • Cleveland, Ohio, United States, 44106
        • Recruiting
        • Cleveland Clinic
        • Principal Investigator:
          • Julie Lang, MD
        • Contact:
          • Phone Number: 800-233-2273
      • Columbus, Ohio, United States, 43212
        • Recruiting
        • The Ohio State University, Stefanie Spielman Comprehensive Breast Center
        • Principal Investigator:
          • Nicole Williams, MD
    • Oregon
      • Portland, Oregon, United States, 97239
        • Recruiting
        • Oregon Health & Science Institute (OHSU)
        • Contact:
          • Phone Number: 503-494-8573
        • Principal Investigator:
          • Alexandra Zimmer, MD
        • Contact:
    • Pennsylvania
      • Philadelphia, Pennsylvania, United States, 19104
        • Recruiting
        • University of Pennsylvania (U Penn)
        • Contact:
          • Phone Number: 215-614-1850
        • Principal Investigator:
          • Amy Clark, MD
      • Pittsburgh, Pennsylvania, United States, 15213
        • Active, not recruiting
        • University Pittsburgh Medical Center
    • South Dakota
      • Sioux Falls, South Dakota, United States, 57104
        • Recruiting
        • Sanford Clinical Research
        • Principal Investigator:
          • Amy Sanford, MD
    • Tennessee
      • Nashville, Tennessee, United States, 27204
        • Active, not recruiting
        • Vanderbilt University Medical Center
    • Texas
      • Dallas, Texas, United States, 75390-9155
        • Active, not recruiting
        • University of Texas, Southwestern Medical Center
      • Houston, Texas, United States, 77230-1439
        • Active, not recruiting
        • University of Texas, M.D. Anderson Cancer Center
    • Utah
      • Salt Lake City, Utah, United States, 84112
        • Recruiting
        • Huntsman Cancer Institute, University of Utah
        • Principal Investigator:
          • Christos Vaklavas, MD
    • Virginia
      • Falls Church, Virginia, United States, 22042
        • Active, not recruiting
        • Inova Health System
    • Washington
      • Seattle, Washington, United States, 98104
        • Active, not recruiting
        • Swedish Cancer Institute
      • Seattle, Washington, United States, 98115
        • Active, not recruiting
        • University of Washington

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Histologically confirmed invasive cancer of the breast
  • Clinically or radiologically measureable disease in the breast after diagnostic biopsy, defined as longest diameter greater than or equal to 25 mm (2.5cm)
  • No prior cytotoxic regimens are allowed for this malignancy. Patients may not have had prior chemotherapy or prior radiation therapy to the ipsilateral breast for this malignancy. Prior bis-phosphonate therapy is allowed
  • Age ≥18 years
  • ECOG performance status 0-1
  • Willing to undergo core biopsy of the primary breast lesion to assess baseline biomarkers
  • Non-pregnant and non-lactating
  • No ferromagnetic prostheses. Patients who have metallic surgical implants that are not compatible with an MRI machine are not eligible.
  • Ability to understand and willingness to sign a written informed consent (I-SPY TRIAL Screening Consent)
  • Eligible tumors must meet one of the following criteria: Stage II or III, or T4, any N, M0, including clinical or pathologic inflammatory cancer or Regional Stage IV, where supraclavicular lymph nodes are the only sites metastasis
  • Any tumor ER/PgR status, any HER-2/neu status as measured by local hospital pathology laboratory and meets any tumor assay profile described in protocol section 4.1.2F
  • Normal organ and marrow function: Leukocytes ≥ 3000/μL, Absolute neutrophil count ≥ 1500/μL, Platelets ≥ 100,000/μL, Total bilirubin within normal institutional limits, unless patient has Gilbert's disease, for which bilirubin must be ≤ 2.0 x ULN, AST(SGOT)/ALT (SGPT) ≤ 1.5 x institutional ULN, creatinine < 1.5 x institutional ULN
  • No uncontrolled or severe cardiac disease. Baseline ejection fraction (by nuclear imaging or echocardiography) must by ≥ 50%
  • No clinical or imaging evidence of distant metastases by PA and Lateral CXR, Radionuclide Bone scan, and LFTs including total bilirubin, ALT, AST, and alkaline phosphatase
  • Tumor assay profile must include on of the following: MammaPrint High, any ER status, any HER2 status, or MammaPrint Low, ER negative (<5%), any HER2 status, or MammaPrint Low, ER positive, HER2/neu positive by any one of the three methods used (IHC, FISH, TargetPrint™)
  • Ability to understand and willingness to sign a written informed consent document (I-SPY 2 TRIAL Consent #2)

Exclusion Criteria:

  • Use of any other investigational agents within 30 days of starting study treatment
  • History of allergic reactions attributed to compounds of similar chemical or biologic composition to the study agent or accompanying supportive medications.
  • Uncontrolled intercurrent illness including, but not limited to, ongoing or active infection, symptomatic congestive heart failure, unstable angina pectoris, cardiac arrhythmia, or psychiatric illness/social situations that would limit compliance with study requirements

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Active Comparator: Standard Therapy
Paclitaxel, Herceptin followed by Doxorubicin and Cyclophosphamide treatment depending on HR/HER-2 status.
Paclitaxel: 80 mg/m2 IV during the 12 weekly treatment cycles post randomization; Doxorubicin: 60 mg/m2 IV after completion of the 12 weekly treatment cycles and prior to surgery for weeks 13-16; Cyclophosphamide: 600 mg/m2 IV after completion of the 12 weekly treatment cycles and prior to surgery for weeks 13-16
Other Names:
  • Paclitaxel (Taxol); Doxorubicin (Adriamycin)
Experimental: AMG 386 with or without Trastuzumab
Arm is closed.
Arm is closed.
Other Names:
  • AMG 386 (Trebananib); (Trastuzumab) Herceptin
Arm is closed.
Other Names:
  • AMG 386 (Trebananib); Trastuzumab (Herceptin)
Other: AMG 479 plus Metformin
Arm is closed.
Arm is closed.
Other Names:
  • Ganitumab
Experimental: MK-2206 with or without Trastuzumab
Arm is closed.
Arm is closed.
Other Names:
  • (Trastuzumab) Herceptin
Experimental: T-DM1 and Pertuzumab
Arm is closed.
Arm is closed.
Other Names:
  • T-DM1 (Trastuzumab emtansine); Pertuzumab (Perjeta)
Experimental: Ganetespib
Arm is closed.
Arm is closed.
Other: ABT-888
Arm is closed.
Arm is closed.
Other Names:
  • Veliparib
Other: Neratinib
Arm is closed.
Arm is closed.
Experimental: PLX3397
Arm is closed.
Arm is closed.
Experimental: Pembrolizumab 4 cycle
Arm is closed.
Arm is closed.
Experimental: Talazoparib plus Irinotecan
Arm is closed.
Arm is closed.
Experimental: Patritumab with or without Trastuzumab
Arm is closed.
Arm is closed.
Experimental: Pembrolizumab 8 cycle
Arm is closed.
Arm is closed.
Experimental: SGN-LIV1A
Arm is closed.
Arm is closed. SGN-LIV1A: 2.5 mg/kg IV cycles 1,4,7,10 Doxorubicin + Cyclophosphamide: Cycles 13-16
Experimental: Durvalumab plus Olaparib
Arm is closed.
Arm is closed.
Experimental: SD-101 + Pembrolizumab
Arm is closed.
Arm is closed. SD-101: IT injection 2 mg/ml (1 ml for T2 tumors, 2 ml for >T3 tumors) weekly x 4, then every 3 weeks x 2 cycles 1,2,3,4,7,10 Pembrolizumab: 200mg IV cycles 1,4,7,10 Paclitaxel: 80 mg/m2 IV cycles 1-12 Doxorubicin + Cyclophosphamide: Cycles 13-16; Doxorubicin: 60 mg/m2 IV Every 2 or 3 weeks for 4 cycles; Cyclophosphamide: 600 mg/m2 IV Every 2 or 3 weeks for 4 cycles
Experimental: Tucatinib
Arm is closed.
Arm is closed. Tucatinib: 300 mg PO BID 12 weeks CLOSED Tucatinib: 250 mg PO BID 12 weeks CLOSED Tucatinib adaptive: 150mg BID days 1-28, 250mg BID days 29-84 Trastuzumab: 4 mg/kg IV (loading dose) cycle 1; 2 mg/kg (thereafter) cycles 2-12 Pertuzumab: 840 mg IV (loading dose) cycle 1; 420 mg (thereafter) cycles 4, 7 and 10 Paclitaxel: 80 mg/m2 IV cycles 1-12 Doxorubicin + Cyclophosphamide: Cycles 13-16; Doxorubicin: 60 mg/m2 IV Every 2 or 3 weeks for 4 cycles; Cyclophosphamide: 600 mg/m2 IV Every 2 or 3 weeks for 4 cycles
Active Comparator: Pertuzumab and Trastuzumab
Arm is closed. Novel Control Investigational Agent.

Arm is closed for Accrual.

Pertuzumab: 840 mg IV (loading dose) week 1 and 420 mg every 3 weeks (weeks 4, 7, 10) post-randomization; Trastuzumab: 4 mg/kg (loading dose) week 1 and 2 mg/kg weekly (weeks 2-12) post-randomization

Other Names:
  • Pertuzumab (Perjeta); Trastuzumab (Herceptin)
Experimental: Cemiplimab
Arm is closed. Novel Investigational Agent.
Cemiplimab: 350 mg q3w X 12 weeks IV cycles 1,4,7,10 Paclitaxel: 80 mg/m2 IV cycles 1-12 Doxorubicin + Cyclophosphamide: Cycles 13-16; Doxorubicin: 60 mg/m2 IV Every 2 or 3 weeks for 4 cycles; Cyclophosphamide: 600 mg/m2 IV Every 2 or 3 weeks for 4 cycles
Experimental: Cemiplimab plus REGN3767
Arm is closed. Novel Investigational Agent.

Arm is closed.

Cemiplimab: 350 mg q3w X 12 weeks IV cycles 1,4,7,10 REGN 3767: 1600 mg q3W X 12 weeks IV cycles 1,4,7,10 Paclitaxel: 80 mg/m2 IV cycles 1-12 Doxorubicin + Cyclophosphamide: Cycles 13-16; Doxorubicin: 60 mg/m2 IV Every 2 or 3 weeks for 4 cycles; Cyclophosphamide: 600 mg/m2 IV Every 2 or 3 weeks for 4 cycles

Experimental: Trilaciclib with or without trastuzumab + pertuzumab
Arm is closed. Novel Investigational Agent.

Arm closed for accrual.

Trilaciclib: 240 mg/m2 IV weekly cycle 1-16 Paclitaxel: 80 mg/m2 IV cycles 1-12 Doxorubicin + Cyclophosphamide: Cycles 13-16; Doxorubicin: 60 mg/m2 IV Every 2 or 3 weeks for 4 cycles; Cyclophosphamide: 600 mg/m2 IV Every 2 or 3 weeks for 4 cycles

For HER2+:

Pertuzumab: 840 mg IV (loading dose) week 1 and 420 mg every 3 weeks (weeks 4, 7, 10) post-randomization Trastuzumab: 4 mg/kg (loading dose) week 1 and 2 mg/kg weekly (weeks 2-12) post-randomization

Other Names:
  • Trilaciclib (G1T28); Pertuzumab (Perjeta); Trastuzumab (Herceptin)
Experimental: SYD985 ([vic-]trastuzumab duocarmazine)
Arm is closed. Novel Investigational Agent.

Arm is closed.

SYD985: 1.2 mg/kg IV (q3w x 12 weeks) cycles 1,4,7,10 Doxorubicin + Cyclophosphamide: Cycles 13-16; Doxorubicin: 60 mg/m2 IV Every 2 or 3 weeks for 4 cycles; Cyclophosphamide: 600 mg/m2 IV Every 2 or 3 weeks for 4 cycles

Experimental: Oral Paclitaxel + Encequidar + Dostarlimab (TSR-042) + Carboplatin with or without trastuzumab
Arm is closed. Novel Investigational Agent.

Arm is closed.

For HER2+ Dostarlimab (TSR-042), 500 mg, IV, q3wks for wk 1, 4, 7, 10 Trastuzumab, 4 mg/kg cycle 1, then 2 mg/kg cycles 2-12 q1wk, IV, for wk1-12 Oral paclitaxel, 205 mg/m2, oral, daily for Three (3) days in a row each week for weeks 1-12 Oral encequidar, 15 mg, oral, daily for Three (3) days in a row each week for weeks 1-12 Carboplatin, AUC 1.5, IV, q1wk from wk1-12 Followed by Doxorubicin: 60 mg/m2, IV, every 2 or 3 weeks for 4 cycles Cyclophosphamide: 600 mg/m2, IV, every 2 or 3 weeks for 4 cycle

For HER2- Dostarlimab (TSR-042), 500 mg, IV, q3wks for wk 1, 4, 7, 10 Oral paclitaxel, 205 mg/m2, oral, daily for Three (3) days in a row each week for weeks 1-12 Oral encequidar, 15 mg, oral, daily for Three (3) days in a row each week for weeks 1-12 Carboplatin, AUC 1.5, IV, q1wk from wk1-12 Followed by Doxorubicin: 60 mg/m2, IV, every 2 or 3 weeks for 4 cycles Cyclophosphamide: 600 mg/m2, IV, every 2 or 3 weeks for 4 cycle

Other Names:
  • Oral Paclitaxel + Encequidar (Oraxol); Dostarlimab (TSR-042); Trastuzumab (Herceptin)
Experimental: Oral Paclitaxel + Encequidar + Dostarlimab (TSR-042) with or without trastuzumab
Arm is closed. Novel Investigational Agent.

Arm is closed.

For HER2+ Dostarlimab (TSR-042), 500 mg, IV, q3wks for wk 1, 4, 7, 10 Trastuzumab, 4 mg/kg cycle 1, then 2 mg/kg cycles 2-12 q1wk, IV, for wk1-12 Oral paclitaxel, 205 mg/m2, oral, daily for Three (3) days in a row each week for weeks 1-12 Oral encequidar, 15 mg, oral, daily for Three (3) days in a row each week for weeks 1-12 Followed by Doxorubicin: 60 mg/m2, IV, every 2 or 3 weeks for 4 cycles Cyclophosphamide: 600 mg/m2, IV, every 2 or 3 weeks for 4 cycle

For HER2- Dostarlimab (TSR-042), 500 mg, IV, q3wks for wk 1, 4, 7, 10 Oral paclitaxel, 205 mg/m2, oral, daily for Three (3) days in a row each week for weeks 1-12 Oral encequidar, 15 mg, oral, daily for Three (3) days in a row each week for weeks 1-12 Followed by Doxorubicin: 60 mg/m2, IV, every 2 or 3 weeks for 4 cycles Cyclophosphamide: 600 mg/m2, IV, every 2 or 3 weeks for 4 cycle

Other Names:
  • Oral Paclitaxel + Encequidar (Oraxol); Dostarlimab (TSR-042); Trastuzumab (Herceptin)
Experimental: Endocrine Optimization Pilot: Amcenestrant Monotherapy
Arm is closed. Novel Investigational Agent.

Arm is closed.

Amcenestrant (SAR439859), 200mg QD, p.o., for 24 weeks.

Other Names:
  • SAR439859
Experimental: Endocrine Optimization Pilot: Amcenestrant + Abemaciclib
Arm is closed. Novel Investigational Agent.

Arm is closed.

Amcenestrant (SAR439859), 200mg QD, p.o., for 24 weeks Abemaciclib (Verzenio), 150mg BID, p.o., for 24 weeks

Other Names:
  • Amcenestrant (SAR439859), Abemaciclib (Verzenio)
Experimental: Endocrine Optimization Pilot: Amcenestrant + Letrozole
Arm is closed. Novel Investigational Agent.

Arm is closed.

Amcenestrant (SAR439859), 200mg QD, p.o., for 24 weeks Letrozole (Femara), 2.5mg QD, p.o., for 24 weeks

Other Names:
  • Amcenestrant (SAR439859), Letrozole (Femara)
Experimental: ARX788 in Block A and followed by SOC in Block B
Arm is closed for accrual for accrual. Novel investigational Agent followed by SOC.

Arm is closed.

ARX788, 1.5 mg/kg Q3W, IV for 12 weeks

Experimental: ARX788 + Cemiplimab in Block A and followed by SOC in Block B
Arm is closed for accrual. Novel investigational Agent followed by SOC.

Arm is closed.

ARX788, 1.5 mg/kg Q3W, IV for 12 weeks Cemiplimab, 350 mg Q3W, IV for 12 weeks

Experimental: VSV-IFNβ-NIS (VOYAGER V1™; VV1) + Cemiplimab in Block A and followed by SOC in block B
Arm is closed for accrual. Novel investigational Agent followed by SOC.

Arm is closed.

VV1, 3x10^9 TCID50 once (day-8), Intra-tumoral injection Cemiplimab, 350 mg Q3W, IV for 12 weeks

Other Names:
  • VOYAGER V1™
  • VSV-IFNβ-NIS
Experimental: Datopotamab Deruxtecan in Block A and followed by SOC in block B
Arm is closed for accrual. Novel investigational Agent followed by SOC.

Arm is closed.

Dato-DXd, 6 mg/kg Q3W, IV for 12 weeks

Other Names:
  • Dato-DXd
Experimental: Datopotamab Deruxtecan + Durvalumab in Block A and followed by SOC in block B
Arm is closed for accrual. Novel investigational Agent followed by SOC.

Arm is closed.

Dato-DXd, 6 mg/kg Q3W, IV for 12 weeks Durvalumab, 1120 mg Q3W, IV for 12 weeks

Other Names:
  • Dato-DXd
Experimental: Zanidatamab for Block ABC
Arm open for accrual. Novel investigational Agent.

Zanidatamab: IV Infusion at a 2-tiered flat dose. 1,800mg (<70 kg) and 2400mg (≥70 kg).

Neoadjuvant doing of zanidatamab: The initial dose will be administered on Cycle 1 Day 1, with Cycle 2 Day 1 occurring 14 days thereafter, followed by subsequent dosing every 3 weeks (Q3W) for a total of up to 5 doses in block A, up to 4 doses Block B, up to 5 doses Block C.

Adjuvant dosing of zanidatamab: Administered every 3 weeks (Q3W) for a total of 1 year of HER2 based therapy. The total number of adjuvant weeks will be dependent on the number of weeks of exposure of zanidatamab in Blocks A, B, and C.

Experimental: Endocrine Optimization Pilot: Lasofoxifene
Arm is closed for accrual. Novel investigational Agent.

Arm is closed.

Lasofoxifene: 5.0 mg QD, p.o., for 24 weeks

Experimental: Endocrine Optimization Pilot: (Z)-Endoxifen
Arm is closed for accrual. Novel investigational Agent.

Arm is closed.

Z-endoxifen: 10 mg QD, p.o., for 24 weeks

Experimental: Endocrine Optimization Pilot: ARV-471
Arm is closed for accrual. Novel investigational Agent.

Arm is closed.

ARV-471: 200 mg QD, p.o, for 24 weeks.

Experimental: Endocrine Optimization Pilot: ARV-471 + Letrozole
Arm is closed for accrual. Novel investigational Agent.

Arm is closed.

ARV-471: 200 mg QD, p.o, for 24 weeks Letrozole: 2.5 mg QD, p.o, for 24 weeks

Experimental: Endocrine Optimization Pilot: ARV-471 + Abemaciclib
Arm is closed for accrual. Novel investigational Agent.

Arm is closed.

ARV-471: 200 mg QD, p.o, for 24 weeks Abemaciclib: 150 mg BID, p.o, for 24 weeks

Experimental: Rilvegostomig + TDXd in Block A and followed by SOC in Block B
Arm is closed for accrual. Novel investigational Agent.

Arm closed to accrual

Rilvegostomig: 750mg IV Q3W for 12 weeks TDXd: 5.4 mg/kg IV Q3W for 12 weeks

Experimental: DAN222 + Niraparib in Block A and followed by SOC in Block B
Arm is closed for accrual. Novel investigational Agent.

Arm is closed.

DAN222: 8mg/m2 IV QW for 12 weeks Niraparib: 200mg QD p.p., 12 weeks

Experimental: Sarilumab + Cemiplimab + Paclitaxel in Block B followed by SOC Block C
Arm is closed for accrual. Novel investigational Agent.

Arm is closed to accrual.

Sarilumab: 200mg Subcutaneous injection Q2W for 12 weeks Cemiplimab: 350mg IV Q3W for 12 weeks Paclitaxel: 80 mg/m2 IV QW for 12 weeks

Experimental: GSK 5733584 in Block A and followed by SOC in Block B
Arm is open for accrual. Novel Investigational Agent.

Arm is open for accrual.

Route: Intravenous infusion Dosage Form: 4.8 mg/kg intravenous Q3W for injection. Will receive a max of 12 weeks.

Experimental: GSK 5733584 + Dostarlimab in Block A and followed by SOC in Block B
Arm is open for accrual. Novel Investigational Agent.

Arm is open for accrual.

GSK 5733584 Route: Intravenous Infusion Dosage Form: 4.8 mg/kg intravenous Q3W for injection x 12 weeks max.

Dostarlimab Route: Intravenous Infusion Dosage Form: 500 mg fixed dose intravenous Q3W for infusion x 12 weeks max.

Experimental: Endocrine Optimization Pilot: (Z)-Endoxifen + Abemaciclib
Arm is closed for accrual. Enrollment completed. Novel investigational Agent.
Z-endoxifen: 80 mg QD, p.o., for 24 weeks Abemaciclib: 150 mg BID, p.o, for 20 weeks
Experimental: Ivonescimab in Blocks A and B
Open for accrual. Novel Investigational Agent.

Strengths to be used in trial:

  1. 20 mg/kg IV Q3W monotherapy
  2. 20 mg/kg IV Q3W with paclitaxel
  3. 20 mg/kg IV Q3W with carboplatin and paclitaxel.

Standard Regimen:

20 mg/kg IV Q3W. Patients in Block A will receive a minimum of 6 weeks a maximum of 12 weeks of Ivonescimab monotherapy in Block A. Patients that have completed Block A, may receive ivonescimab plus paclitaxel or ivonescimab plus paclitaxel plus carboplatin in Block B (depending on subtype).

Other Names:
  • AK112
  • SMT112
  • PD-1 / VEGF bispecific antibody
  • 依达方® (Yiwoxi Dankang Zhusheye)

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Determine whether adding experimental agents to standard neoadjuvant medications increases the probability of pathologic complete response (pCR) over standard neoadjuvant chemotherapy for each biomarker signature established at trial entry.
Time Frame: Post surgery based on upto 36-week treatment
Post surgery based on upto 36-week treatment

Secondary Outcome Measures

Outcome Measure
Time Frame
Establishing predictive and prognostic indices based on qualification and exploratory markers to predict pCR and residual cancer burden (RCB).
Time Frame: Blood and Tissue Collection: Baseline, Post-Randomization, Pre-AC, Pre- and Post-Surgery
Blood and Tissue Collection: Baseline, Post-Randomization, Pre-AC, Pre- and Post-Surgery
To determine three- and five-year relapse-free survival (RFS) and OS among the treatment arms.
Time Frame: Three- and Five-Year Post-surgery Follow-up
Three- and Five-Year Post-surgery Follow-up
To determine incidence of adverse events (AEs), serious adverse events (SAEs), and laboratory abnormalities of each investigational agent tested.
Time Frame: Post-Randomization, Pre-AC, Pre-Surgery, Post-Surgery upto One Year during follow-up
Post-Randomization, Pre-AC, Pre-Surgery, Post-Surgery upto One Year during follow-up
MRI Volume
Time Frame: Four time points during the on-study phase: Baseline, Post-randomization, Pre-AC treatment and Pre-Surgery
Four time points during the on-study phase: Baseline, Post-randomization, Pre-AC treatment and Pre-Surgery

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Investigators

  • Principal Investigator: Laura Esserman, MD, MBA, University of California, San Francisco

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

March 1, 2010

Primary Completion (Estimated)

December 1, 2030

Study Completion (Estimated)

December 1, 2031

Study Registration Dates

First Submitted

December 31, 2009

First Submitted That Met QC Criteria

January 4, 2010

First Posted (Estimated)

January 5, 2010

Study Record Updates

Last Update Posted (Actual)

May 6, 2026

Last Update Submitted That Met QC Criteria

May 4, 2026

Last Verified

May 1, 2026

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 097517

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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