A Study of RO7247669 + Nab-Paclitaxel Compared With Pembrolizumab + Nab-Paclitaxel in Participants With Previously Untreated, PD-L1-Positive, Locally-Advanced Unresectable or Metastatic Triple-Negative Breast Cancer

Sponsor
Hoffmann-La Roche (Industry)
Overall Status
Not yet recruiting
CT.gov ID
NCT05852691
Collaborator
(none)
160
2
33

Study Details

Study Description

Brief Summary

The purpose of this study is to assess the efficacy and safety of a novel immunotherapy candidate, RO7247669, in combination with nab-paclitaxel, for patients with previously untreated, locally advanced, unresectable or metastatic (Stage IV) programmed death-ligand 1 (PD-L1)-positive triple-negative breast cancer (TNBC).

Condition or Disease Intervention/Treatment Phase
Phase 2

Study Design

Study Type:
Interventional
Anticipated Enrollment :
160 participants
Allocation:
Randomized
Intervention Model:
Parallel Assignment
Masking:
Double (Participant, Investigator)
Primary Purpose:
Treatment
Official Title:
A Phase II, Multicenter, Randomized, Double-Blind Study of RO7247669 Combined With Nab-Paclitaxel Compared With Pembrolizumab Combined With Nab-Paclitaxel in Participants With Previously Untreated, PD-L1-Positive, Locally-Advanced Unresectable or Metastatic Triple-Negative Breast Cancer
Anticipated Study Start Date :
May 30, 2023
Anticipated Primary Completion Date :
Dec 1, 2025
Anticipated Study Completion Date :
Feb 27, 2026

Arms and Interventions

Arm Intervention/Treatment
Experimental: Arm A

Participants will receive RO7247669 every 3 weeks, plus nab-paclitaxel administered on a repeating schedule of 3 weeks on, 1 week off, until disease progression or treatment discontinuation.

Drug: RO7247669
Participants will receive intravenous (IV) RO7247669 every 3 weeks (Q3W) until disease progression or treatment discontinuation.

Drug: Nab-Paclitaxel
Participants will receive IV nab-paclitaxel weekly for 3 weeks, followed by 1 week off, until disease progression or treatment discontinuation.

Active Comparator: Arm B

Participants will receive pembrolizumab every 3 weeks, plus nab-paclitaxel administered on a repeating schedule of 3 weeks on, 1 week off, until disease progression or treatment discontinuation.

Drug: Pembrolizumab
Participants will receive IV pembrolizumab Q3W until disease progression or treatment discontinuation.

Drug: Nab-Paclitaxel
Participants will receive IV nab-paclitaxel weekly for 3 weeks, followed by 1 week off, until disease progression or treatment discontinuation.

Outcome Measures

Primary Outcome Measures

  1. Progression-Free Survival (PFS) [From randomization to the first occurrence of disease progression or death from any cause, whichever occurs first (up to approximately 30 months)]

Secondary Outcome Measures

  1. Objective Response Rate (ORR) [Two consecutive occasions at least 4 weeks apart (up to approximately 30 months)]

  2. Duration of Response (DOR) [From the first occurrence of a confirmed objective response to the first occurrence of disease progression or death from any cause, whichever occurs first (up to approximately 30 months)]

  3. Overall Survival (OS) [From randomization to death from any cause (up to approximately 30 months)]

  4. PFS rate at 12 months [12 months after randomization]

  5. OS rate at 12 months [12 months after randomization]

  6. Serum Concentration of RO7247669 [Up to approximately 30 months]

  7. Incidence of Anti-Drug Antibodies (ADAs) to RO7249669 [Up to approximately 30 months]

Eligibility Criteria

Criteria

Ages Eligible for Study:
18 Years and Older
Sexes Eligible for Study:
All
Accepts Healthy Volunteers:
No
Inclusion Criteria:
  • Metastatic or locally advanced unresectable, histologically documented triple-negative breast cancer (TNBC) (absence of HER2-over-expression, ER, and PgR expression by local assessment)

  • HER2-low-status

  • Measurable disease per Response Evaluation Criteria in Solid Tumors (RECIST) v1.1

  • If metastatic disease (Stage IV), measurable disease outside of the bone

  • No prior systemic therapy for metastatic or locally advanced unresectable TNBC

  • Tumor PD-L1 expression as documented through central testing of a representative tumor tissue specimen

  • Eastern Cooperative Oncology Group (ECOG) Performance Status of 0 or 1

  • Adequate hematologic and end-organ function

  • Negative HIV test at screening, with the following exception: individuals with a positive HIV test at screening are eligible provided they are stable on anti-retroviral therapy, have a CD4 count ≥ 200/uL, and have an undetectable viral load

  • Negative hepatitis B surface antigen (HBsAg) test at screening

  • Positive hepatitis B surface antibody (HBsAb) test at screening, or a negative HBsAb at screening accompanied by either of the following: negative hepatitis B core antibody (HBcAb); positive HBcAb test followed by quantitative hepatitis B virus (HBV) DNA < 500 IU/mL

  • Negative hepatitis C virus (HCV) antibody test at screening, or a positive HCV antibody test followed by a negative HCV RNA test at screening

  • Adequate cardiovascular function

Exclusion Criteria:
  • Pregnancy or breastfeeding, or intention of becoming pregnant during the study or within 4 months after the final dose of RO7247669 or pembrolizumab, and 6 months after the final dose of nab-paclitaxel

  • Poor venous access

  • History of malignancy within 5 years prior to consent, except for the cancer under investigation in this study and malignancies with a negligible risk of metastasis or death (e.g., 5-year OS rate >90%), such as adequately treated carcinoma in situ of the cervix, nonmelanoma skin carcinoma, localized prostate cancer, ductal carcinoma in situ, or Stage I uterine cancer

  • Symptomatic, untreated, or actively progressing central nervous system (CNS) metastases

  • History of leptomeningeal disease

  • Pleural effusion, pericardial effusion, or ascites requiring recurrent drainage procedures (once monthly or more frequently)

  • Hypercalcemia or hypercalcemia that is symptomatic

  • Active or history of autoimmune disease or immune deficiency, including, but not limited to, myasthenia gravis, myositis, autoimmune hepatitis, systemic lupus erythematosus, rheumatoid arthritis, inflammatory bowel disease, antiphospholipid antibody syndrome, Wegener granulomatosis (granulomatosis with polyangiitis), Sjögren syndrome, Guillain-Barré syndrome, or multiple sclerosis

  • History of idiopathic pulmonary fibrosis, organizing pneumonia (e.g., bronchiolitis obliterans), drug-induced pneumonitis, or idiopathic pneumonitis, or evidence of active pneumonitis on screening chest computed tomography (CT) scan. History of radiation pneumonitis in the radiation field (fibrosis) is permitted

  • Active tuberculosis (TB)

  • Significant cardiovascular/cerebrovascular disease within 3 months prior to consent

  • History or presence of an abnormal ECG that is deemed clinically significant

  • History of ventricular dysrhythmias or risk factors for ventricular dysrhythmias such as structural heart disease (e.g., severe left ventricular systolic dysfunction, left ventricular hypertrophy), coronary heart disease (symptomatic or with ischemia demonstrated by diagnostic testing), clinically significant electrolyte abnormalities (e.g., hypokalemia, hypomagnesemia, hypocalcemia), or family history of sudden unexplained death or long QT syndrome

  • Major surgical procedure within 4 weeks prior to initiation of study treatment

  • Treatment with therapeutic oral or IV antimicrobials (anti-bacterial, anti-fungal, antiviral, anti-parasitic) within 1 week prior to initiation of study treatment

  • Prior allogeneic stem cell or solid organ transplantation

  • Any other disease, metabolic dysfunction, physical examination finding, or clinical laboratory finding that contraindicates the use of an investigational drug, may affect the interpretation of the results, or may render the participant at high risk from treatment complications

  • Treatment with a live, attenuated vaccine within 28 days prior to initiation of study treatment

  • Treatment with investigational therapy within 28 days prior to initiation of study treatment

  • Prior treatment with CD137 agonists or anti-CTLA therapeutic antibodies or an anti-LAG3 agent

  • Treatment with systemic immunostimulatory agents (including, but not limited to, interferon and IL-2) within 4 weeks or 5 drug-elimination half-lives (whichever is longer) prior to initiation of study treatment

  • Treatment with systemic corticosteroids or other systemic immunosuppressive medications (including, but not limited to, prednisone, dexamethasone, cyclophosphamide, azathioprine, methotrexate, thalidomide, and anti-TNF agents) within 2 weeks prior to initiation of study treatment

  • History of severe allergic anaphylactic reactions to chimeric or humanized antibodies or fusion proteins

  • Known hypersensitivity to Chinese hamster ovary cell products or to any component of the RO7247669 or pembrolizumab formulation

  • Known allergy or hypersensitivity to any component of the to nab-paclitaxel formulation

Contacts and Locations

Locations

No locations specified.

Sponsors and Collaborators

  • Hoffmann-La Roche

Investigators

  • Study Director: Clinical Trials, Hoffmann-La Roche

Study Documents (Full-Text)

None provided.

More Information

Publications

None provided.
Responsible Party:
Hoffmann-La Roche
ClinicalTrials.gov Identifier:
NCT05852691
Other Study ID Numbers:
  • CO44194
First Posted:
May 10, 2023
Last Update Posted:
May 10, 2023
Last Verified:
Apr 1, 2023
Individual Participant Data (IPD) Sharing Statement:
Yes
Plan to Share IPD:
Yes
Studies a U.S. FDA-regulated Drug Product:
Yes
Studies a U.S. FDA-regulated Device Product:
No
Additional relevant MeSH terms:

Study Results

No Results Posted as of May 10, 2023