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The AVIATOR Study: Trastuzumab and Vinorelbine With Avelumab OR Avelumab & Utomilumab in Advanced HER2+ Breast Cancer

A Randomized, Phase II Study Comparing Trastuzumab and Vinorelbine in Combination With Avelumab or Avelumab and Utomilumab (41BB/CD137 Agonist), in Patients With HER2-positive Metastatic Breast Cancer Who Have Progressed on Prior Trastuzumab and Pertuzumab

Status
Active, not recruiting
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03414658
Enrollment
100
Registered
2018-01-30
Start date
2018-06-21
Completion date
2026-05-31
Last updated
2025-07-02

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Breast Cancer

Keywords

Breast Cancer

Brief summary

This research study is studying a combination of drugs as a possible treatment for breast cancer. The drugs involved in this study are: * Group A: Trastuzumab (Herceptin) + Vinorelbine (Navelbine) * Group B: Trastuzumab + Vinorelbine + Avelumab * Group C: Trastuzumab + Vinorelbine + Avelumab + Utomilumab (PF-05082566)

Detailed description

This research study is a Phase II clinical trial. Phase II clinical trials test the safety and effectiveness of an investigational drug combination to learn whether the drug combination works in treating a specific disease. Investigational means that drug combination is being studied. The FDA (the U.S. Food and Drug Administration) has not approved Utomilumab as a treatment for any disease. The FDA (the U.S. Food and Drug Administration) has approved Avelumab as a treatment for other diseases. The FDA (the U.S. Food and Drug Administration) has approved trastuzumab as a treatment option for this disease. The FDA (the U.S. Food and Drug Administration) has approved vinorelbine as a treatment for other diseases and is commonly used as a treatment option for this disease. The immune system is the body's natural defense against disease. The immune system sends a type of cells called T cells throughout the body to detect and fight infections and diseases-including cancers. One way the immune system controls the activity of T cells is through the PD-1 (programmed cell death protein-1) pathway. However, some cancer cells hide from T-cell attack by taking control of the PD-1 pathway and this stops T cells from attacking cancer cells. Avelumab is a type of drug, known as an antibody which is designed to block the PD-1 pathway and helps the immune system in detecting and fighting cancer cells. An antibody is a protein produced by the body's immune system when it detects harmful substances. Previous studies show that the administration of antibodies which block the PD-1 pathway can lead to tumor destruction. Utomilumab is an antibody designed to stimulate the body's immune system to fight cancer cells. Previous studies have shown that the administration of this type of antibody may help to prevent tumors from growing. In the laboratory, adding avelumab and Utomilumab to trastuzumab appears to improve effectiveness. It is not known whether this is true in humans. In this research study, the investigators are evaluating the activity of 3 different combinations: (a)trastuzumab and vinorelbine combined, (b) trastuzumab, vinorelbine and avelumab combined, and (c) trastuzumab, vinorelbine, avelumab and utomilumab combined in participants with metastatic HER2- positive breast cancer.

Interventions

DRUGVinorelbine

work by interfering with cell division, which leaves the tumor unable to grow and spread

DRUGTrastuzumab

trastuzumab induces an antibody-dependent cell-mediated cytotoxicity against tumor cells that overexpress HER2.

DRUGAvelumab

monoclonal antibody directed against the human immunosuppressive ligand programmed death-ligand 1 (PD-L1) protein

Utomilumab is an antibody designed to stimulate the body's immune system to fight cancer cells

Sponsors

Pfizer
CollaboratorINDUSTRY
Breast Cancer Research Foundation
CollaboratorOTHER
Johns Hopkins University
CollaboratorOTHER
Adrienne G. Waks
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Age ≥18 years or older * Histologically confirmed breast adenocarcinoma that is unresectable loco-regionally advanced or metastatic * HER2-positive (immunohistochemistry score 3+) or ERBB2- amplification (Ratio ERBB2/centromeres ≥ 2.0 or mean gene copy number ≥ 6) on primary tumor or of metastatic or unresectable loco-regional biopsy. * Measurable disease per RECIST v1.1 (see Section 11) * Patients must have previous treatment with ado-trastuzumab emtansine (Kadcyla, T-DM1) in any setting. Patients must have previously received trastuzumab and pertuzumab in the metastatic setting or within 12 months of neoadjuvant/adjuvant treatment. * Patient must have progressed on their most recent line of therapy. Progression must have been demonstrated by radiological or clinical assessment. * Left ventricular ejection fraction (LVEF) ≥ 50% * Willingness and availability to submit FFPE tissue for central confirmation of HER2 positivity and central assessment of PD-L1 status. This can be from archival tissue from unresectable loco-regional or metastatic disease obtained ≤ 1 year prior to enrollment or new tissue material from a recently obtained surgical or diagnostic biopsy. Tissue obtained for the biopsy must not have been previously irradiated. If a patient does not have any available archival tissue ≤ 1 year old and the treating investigator does not feel that it would be safe to perform a fresh biopsy, the requirement for a fresh biopsy may be waived after discussion with the Principal Investigator. * Written informed consent for screening and trial participation procedures including biological material transfer and handling. * Eastern Cooperative Oncology Group (ECOG) performance status 0-1 * Hematopoietic status: * Absolute neutrophil count ≥ 1.0 × 109/L, * Platelet count ≥ 100 × 109/L, * Hemoglobin ≥ 9 g/dL * Hepatic status: * Serum total bilirubin ≤ 1.5 × upper limit of normal (ULN). In the case of known Gilbert's syndrome, a higher serum total bilirubin (\< 2 × ULN) is allowed. * AST and ALT ≤ 2.5 × ULN; if the patient has liver metastases, ALT and AST must be ≤ 5 × ULN. * Renal status: * Creatinine ≤ 1.5 ×ULN or creatinine clearance \> 60 ml/min * Proteinuria \< 1 g/day * International Normalized Ratio (INR) or Prothrombin Time (PT) ≤ 1.5 × ULN unless patient is receiving anticoagulant therapy as long as PT or PTT is within therapeutic range of intended use of anticoagulant. * If female of childbearing potential, must have a negative pregnancy test within 7 days of initiating treatment. Childbearing potential is defined by: those who have not been surgically sterilized and/or have had a menstrual period in the past year. * Participants of childbearing potential (as defined above) must be willing to use effective contraception during treatment and up to 7 months after stop of trial treatment. Acceptable methods of contraception are intrauterine devices, bilateral tubal occlusion, vasectomized, or total abstinence. Oral, injectable, or implant hormonal contraceptives are not allowed. * Must not be breastfeeding/lactating.

Exclusion criteria

* Prior therapy with any anti-PD-1, anti-PD-L1, L2, anti-4-1BB (CD137), or anti-CTLA4 therapy * Known Human Immunodeficiency Virus (HIV) (HIV 1/2 antibodies) * Positive for Hepatitis B (HBsAg reactive) or Hepatitis C (HCV RNA \[qualitative\]). * History of interstitial lung disease * Active central nervous system metastases, as indicated by clinical symptoms, cerebral edema, and/or progressive growth (patients with history of CNS metastases or spinal cord compression are eligible if they are clinically stable for at least 4 weeks before first dose of investigational product and do not require high-dose steroid treatment). * History of clinically significant or uncontrolled cardiac disease, including congestive heart failure (New York Heart Association functional classification ≥3), angina, myocardial infarction or ventricular arrhythmia. * Previous severe hypersensitivity reaction to treatment with another monoclonal antibody. * Active infection requiring systemic therapy. * Chronic systemic therapy with immunosuppressive agents including corticosteroids. * Active autoimmune disease or a documented history of autoimmune disease, or a syndrome that requires systemic steroids or immunosuppressive agents. Patients with vitiligo or resolved childhood asthma/atopy would be an exception to this rule. Patients that require intermittent use of bronchodilators or local steroid injections would not be excluded from the trial. Patients with hypothyroidism stable on hormone replacement or Sjögren's syndrome will not be excluded from the trial. * Concurrent disease or condition that would make the patient inappropriate for trial participation or any serious medical disorder that would interfere with the patient's safety. * No uncontrolled hypertension (≥180/110), unstable diabetes mellitus, dyspnea at rest, or chronic therapy with oxygen. * Chemotherapy, radiotherapy, and/or biological cancer therapy within 3 weeks prior to the first trial dose or has not recovered to CTCAE v.4 grade 1 or better from adverse events (except alopecia). * Unresolved or unstable, serious adverse events from prior administration of another investigational drug. * Live vaccines within 30 days prior to the first dose of trial therapy and during trial treatment.

Design outcomes

Primary

MeasureTime frameDescription
Progression Free Survival2 yearsProgression Free Survival is defined from the time from randomization to the first occurrence of disease progression as determined by the investigator using RECIST 1.1 or death from any cause, whichever occurs first.

Secondary

MeasureTime frameDescription
Objective Response Rate2 yearsObjective Response Rate is determined by Complete Response or Partial Response by RECIST 1.1. Per RECIST 1.1 for target lesions and assessed by MRI: Complete Response (CR), Disappearance of all target lesions; Partial Response (PR), \>=30% decrease in the sum of the longest diameter of target lesions; Overall Response (OR) = CR + PR.
Duration of Response3 yearsDuration of Response is measured from the time criteria are met for CR or PR (whichever is first recorded) until the first date that recurrent or progressive disease is objectively documented. Per RECIST 1.1 for target lesions and assessed by MRI: Complete Response (CR), Disappearance of all target lesions; Partial Response (PR), \>=30% decrease in the sum of the longest diameter of target lesions.
Overall Survival5 yearsOverall survival is defined as the time from randomization to death from any cause, or is censored at date last known alive.

Countries

United States

Participant flow

Recruitment details

AVIATOR enrolled 100 patients in 16 centers in the US between June 21, 2018 and March 1, 2023.

Participants by arm

ArmCount
NH: Trastuzumab + Vinorelbine
* Trastuzumab is administered intravenously twice per cycle * Vinorelbine is administered intravenously 3 times per cycle Vinorelbine: work by interfering with cell division, which leaves the tumor unable to grow and spread Trastuzumab: trastuzumab induces an antibody-dependent cell-mediated cytotoxicity against tumor cells that overexpress HER2.
18
NHA: Trastuzumab + Vinorelbine + Avelumab
* Trastuzumab is administered intravenously twice per cycle * Vinorelbine is administered intravenously 3 times per cycle * Avelumab is administered intravenously twice per cycle * Antihistamine and with acetaminophen is mandatory 30 to 60 minutes prior to each dose of avelumab Vinorelbine: work by interfering with cell division, which leaves the tumor unable to grow and spread Trastuzumab: trastuzumab induces an antibody-dependent cell-mediated cytotoxicity against tumor cells that overexpress HER2. Avelumab: monoclonal antibody directed against the human immunosuppressive ligand programmed death-ligand 1 (PD-L1) protein
45
NHAU: Trastuzumab + Vinorelbine + Avelumab + Utomilumab
* Trastuzumab is administered intravenously twice per cycle * Vinorelbine is administered intravenously 3 times per cycle * Avelumab is administered intravenously twice per cycle * Antihistamine and with acetaminophen is mandatory 30 to 60 minutes prior to each dose of avelumab * Utomilumab is administered intravenously once per cycle Vinorelbine: work by interfering with cell division, which leaves the tumor unable to grow and spread Trastuzumab: trastuzumab induces an antibody-dependent cell-mediated cytotoxicity against tumor cells that overexpress HER2. Avelumab: monoclonal antibody directed against the human immunosuppressive ligand programmed death-ligand 1 (PD-L1) protein Utomilumab: Utomilumab is an antibody designed to stimulate the body's immune system to fight cancer cells
34
Total97

Baseline characteristics

CharacteristicTotalNHAU: Trastuzumab + Vinorelbine + Avelumab + UtomilumabNHA: Trastuzumab + Vinorelbine + AvelumabNH: Trastuzumab + Vinorelbine
Age, Continuous54 years57 years53 years54 years
BMI25.2 kg/m^226.4 kg/m^224.9 kg/m^223.8 kg/m^2
ECOG PS
0
58 Participants23 Participants24 Participants11 Participants
ECOG PS
1
39 Participants11 Participants21 Participants7 Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
7 Participants1 Participants6 Participants0 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
87 Participants31 Participants38 Participants18 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
3 Participants2 Participants1 Participants0 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
8 Participants2 Participants4 Participants2 Participants
Race (NIH/OMB)
Black or African American
14 Participants4 Participants6 Participants4 Participants
Race (NIH/OMB)
More than one race
2 Participants0 Participants2 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
5 Participants2 Participants2 Participants1 Participants
Race (NIH/OMB)
White
68 Participants26 Participants31 Participants11 Participants
Region of Enrollment
United States
97 participants34 participants45 participants18 participants
Sex: Female, Male
Female
96 Participants33 Participants45 Participants18 Participants
Sex: Female, Male
Male
1 Participants1 Participants0 Participants0 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
deaths
Total, all-cause mortality
10 / 1823 / 4520 / 34
other
Total, other adverse events
18 / 1845 / 4534 / 34
serious
Total, serious adverse events
5 / 189 / 459 / 34

Outcome results

Primary

Progression Free Survival

Progression Free Survival is defined from the time from randomization to the first occurrence of disease progression as determined by the investigator using RECIST 1.1 or death from any cause, whichever occurs first.

Time frame: 2 years

ArmMeasureValue (MEDIAN)
NH: Trastuzumab + VinorelbineProgression Free Survival2 months
NHA: Trastuzumab + Vinorelbine + AvelumabProgression Free Survival3.8 months
NHAU: Trastuzumab + Vinorelbine + Avelumab + UtomilumabProgression Free Survival4.9 months
p-value: 0.02580% CI: [0.35, 0.81]Log Rank
p-value: 0.3280% CI: [0.8, 1.64]Log Rank
Secondary

Duration of Response

Duration of Response is measured from the time criteria are met for CR or PR (whichever is first recorded) until the first date that recurrent or progressive disease is objectively documented. Per RECIST 1.1 for target lesions and assessed by MRI: Complete Response (CR), Disappearance of all target lesions; Partial Response (PR), \>=30% decrease in the sum of the longest diameter of target lesions.

Time frame: 3 years

Population: Participants who had response.

ArmMeasureValue (MEDIAN)
NH: Trastuzumab + VinorelbineDuration of ResponseNA months
NHA: Trastuzumab + Vinorelbine + AvelumabDuration of Response15.8 months
NHAU: Trastuzumab + Vinorelbine + Avelumab + UtomilumabDuration of Response4.2 months
Secondary

Objective Response Rate

Objective Response Rate is determined by Complete Response or Partial Response by RECIST 1.1. Per RECIST 1.1 for target lesions and assessed by MRI: Complete Response (CR), Disappearance of all target lesions; Partial Response (PR), \>=30% decrease in the sum of the longest diameter of target lesions; Overall Response (OR) = CR + PR.

Time frame: 2 years

ArmMeasureValue (NUMBER)
NH: Trastuzumab + VinorelbineObjective Response Rate11.1 percent of participants
NHA: Trastuzumab + Vinorelbine + AvelumabObjective Response Rate20 percent of participants
NHAU: Trastuzumab + Vinorelbine + Avelumab + UtomilumabObjective Response Rate11.8 percent of participants
Secondary

Overall Survival

Overall survival is defined as the time from randomization to death from any cause, or is censored at date last known alive.

Time frame: 5 years

ArmMeasureValue (MEDIAN)
NH: Trastuzumab + VinorelbineOverall Survival22.8 months
NHA: Trastuzumab + Vinorelbine + AvelumabOverall Survival26.3 months
NHAU: Trastuzumab + Vinorelbine + Avelumab + UtomilumabOverall Survival27 months

Source: ClinicalTrials.gov · Data processed: Feb 6, 2026