A Study to Evaluate the Efficacy and Safety of Trastuzumab Emtansine in Combination With Atezolizumab or Atezolizumab-Placebo in Participants With Human Epidermal Growth Factor-2 (HER2) Positive Locally Advanced or Metastatic Breast Cancer (BC) Who Received Prior Trastuzumab and Taxane Based Therapy (KATE2)
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ClinicalTrials.gov Identifier: NCT02924883 |
Recruitment Status :
Completed
First Posted : October 5, 2016
Results First Posted : February 12, 2019
Last Update Posted : February 17, 2021
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Sponsor:
Hoffmann-La Roche
Information provided by (Responsible Party):
Hoffmann-La Roche
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Study Type | Interventional |
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Study Design | Allocation: Randomized; Intervention Model: Parallel Assignment; Masking: Double (Participant, Investigator); Primary Purpose: Treatment |
Condition |
Metastatic Breast Cancer |
Interventions |
Drug: Atezolizumab Drug: Trastuzumab emtansine Other: Placebo |
Enrollment | 202 |
Participant Flow
Recruitment Details | |
Pre-assignment Details |
Arm/Group Title | Trastuzumab Emtansine + Atezolizumab | Trastuzumab Emtansine + Placebo |
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Arm/Group Description | Atezolizumab 1200 milligrams (mg) intravenous (IV) infusion followed by trastuzumab emtansine 3.6 milligrams per kilogram (mg/kg) IV infusion on Day 1 Cycle 1 and thereafter on Day 1 of each 21-day cycle until disease progression, unmanageable toxicity, or study termination by the Sponsor (up to study duration of approximately 40 months) | Placebo matched to atezolizumab followed by trastuzumab emtansine 3.6 mg/kg IV infusion on Day 1 Cycle 1 and thereafter on Day 1 of each 21-day cycle until disease progression, unmanageable toxicity, or study termination by the sponsor (up to study duration of approximately 40 months) |
Period Title: Overall Study | ||
Started | 133 | 69 |
Completed | 0 | 0 |
Not Completed | 133 | 69 |
Reason Not Completed | ||
Death | 39 | 20 |
Lost to Follow-up | 1 | 0 |
Symptomatic Deterioration/ Clinical Progression | 0 | 1 |
Protocol Violation | 1 | 0 |
Withdrawal by Subject | 22 | 16 |
Progressive Disease | 1 | 0 |
Study Terminated by Sponsor | 69 | 32 |
Baseline Characteristics
Arm/Group Title | Trastuzumab Emtansine + Atezolizumab | Trastuzumab Emtansine + Placebo | Total | |
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Arm/Group Description | Atezolizumab 1200 milligrams (mg) intravenous (IV) infusion followed by trastuzumab emtansine 3.6 milligrams per kilogram (mg/kg) IV infusion on Day 1 Cycle 1 and thereafter on Day 1 of each 21-day cycle until disease progression, unmanageable toxicity, or study termination by the Sponsor (up to study duration of approximately 40 months) | Placebo matched to atezolizumab followed by trastuzumab emtansine 3.6 mg/kg IV infusion on Day 1 Cycle 1 and thereafter on Day 1 of each 21-day cycle until disease progression, unmanageable toxicity, or study termination by the sponsor (up to study duration of approximately 40 months) | Total of all reporting groups | |
Overall Number of Baseline Participants | 133 | 69 | 202 | |
Baseline Analysis Population Description |
[Not Specified]
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Age, Continuous
Mean (Standard Deviation) Unit of measure: Years |
||||
Number Analyzed | 133 participants | 69 participants | 202 participants | |
53.7 (9.9) | 54.4 (10.9) | 53.9 (10.3) | ||
Sex: Female, Male
Measure Type: Count of Participants Unit of measure: Participants |
||||
Number Analyzed | 133 participants | 69 participants | 202 participants | |
Female |
131 98.5%
|
69 100.0%
|
200 99.0%
|
|
Male |
2 1.5%
|
0 0.0%
|
2 1.0%
|
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Ethnicity (NIH/OMB)
Measure Type: Count of Participants Unit of measure: Participants |
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Number Analyzed | 133 participants | 69 participants | 202 participants | |
Hispanic or Latino |
10 7.5%
|
1 1.4%
|
11 5.4%
|
|
Not Hispanic or Latino |
114 85.7%
|
66 95.7%
|
180 89.1%
|
|
Unknown or Not Reported |
9 6.8%
|
2 2.9%
|
11 5.4%
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|
Race (NIH/OMB)
Measure Type: Count of Participants Unit of measure: Participants |
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Number Analyzed | 133 participants | 69 participants | 202 participants | |
American Indian or Alaska Native |
0 0.0%
|
0 0.0%
|
0 0.0%
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|
Asian |
49 36.8%
|
23 33.3%
|
72 35.6%
|
|
Native Hawaiian or Other Pacific Islander |
1 0.8%
|
0 0.0%
|
1 0.5%
|
|
Black or African American |
5 3.8%
|
1 1.4%
|
6 3.0%
|
|
White |
72 54.1%
|
44 63.8%
|
116 57.4%
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|
More than one race |
1 0.8%
|
0 0.0%
|
1 0.5%
|
|
Unknown or Not Reported |
5 3.8%
|
1 1.4%
|
6 3.0%
|
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Region
Measure Type: Number Unit of measure: Number of Participants |
Number Analyzed | 133 participants | 69 participants | 202 participants |
USA | 21 | 11 | 32 | |
Western Europe | 50 | 26 | 76 | |
Rest of the World | 62 | 32 | 94 | |
Programmed Cell-Death Ligand 1 Immunohistochemistry status
Measure Type: Number Unit of measure: Number of Participants |
Number Analyzed | 133 participants | 69 participants | 202 participants |
PD-L1 positive | 57 | 27 | 84 | |
PD-L1 negative | 76 | 42 | 118 |
Outcome Measures
Adverse Events
Limitations and Caveats
[Not Specified]
More Information
Principal Investigators are NOT employed by the organization sponsoring the study.
There IS an agreement between Principal Investigators and the Sponsor (or its agents) that restricts
the PI's rights to discuss or publish trial results after the trial is completed.
The Study being conducted under this Agreement is part of the Overall Study. Investigator is free to publish in reputable journals or to present at professional conferences the results of the Study, but only after the first publication or presentation that involves the Overall Study. The Sponsor may request that Confidential Information be deleted and/or the publication be postponed in order to protect the Sponsor's intellectual property rights
Results Point of Contact
Name/Title: | Medical Communications |
Organization: | Hoffmann-La Roche |
Phone: | 800 821-8590 |
EMail: | genentech@druginfo.com |
Publications automatically indexed to this study by ClinicalTrials.gov Identifier (NCT Number):
Responsible Party: | Hoffmann-La Roche |
ClinicalTrials.gov Identifier: | NCT02924883 |
Other Study ID Numbers: |
WO30085 2015-004189-27 ( EudraCT Number ) |
First Submitted: | September 21, 2016 |
First Posted: | October 5, 2016 |
Results First Submitted: | December 9, 2018 |
Results First Posted: | February 12, 2019 |
Last Update Posted: | February 17, 2021 |