Ado-Trastuzumab Emtansine in Treating Patients With HER2-Positive Metastatic or Locally Advanced Breast Cancer That Cannot Be Removed by Surgery
This phase I trial studies the side effects and best way of giving ado-trastuzumab emtansine in treating patients with human epidermal growth factor receptor 2 (HER2)-positive metastatic or locally advanced breast cancer that cannot be removed by surgery. Biological therapies, such as ado-trastuzumab emtansine may stimulate the immune system in different ways and stop cancer cells from growing
HER2-positive Breast Cancer
Recurrent Breast Cancer
Stage IIIB Breast Cancer
Stage IIIC Breast Cancer
Stage IV Breast Cancer
Biological: ado-trastuzumab emtansine
Other: laboratory biomarker analysis
Other: pharmacological study
|Study Design:||Endpoint Classification: Safety Study
Intervention Model: Single Group Assignment
Masking: Open Label
Primary Purpose: Treatment
|Official Title:||Thrombokinetic Studies of Trastuzumab Emtansine|
- Thrombokinetic changes in the bone marrow [ Time Frame: Baseline up to 22 days ] [ Designated as safety issue: Yes ]The actual analysis will fit a linear mixed effects model, using a two-sided Wald test to compare pre-therapy to the two post-therapy values, and should have greater power than a matched pairs design. Also, platelet lifespan may be measured in absolute terms (platelet lifespan) or relative terms (percentage relative to pre-therapy lifespan), and may be transformed to decrease the influence of extreme values.
- Megakaryocyte toxicity and depletion in bone marrow as assessed by NCI CTCAE v4.0 [ Time Frame: Up to day 42 ] [ Designated as safety issue: Yes ]
- Incidence, type, and severity of adverse events (AEs) graded according to the NCI CTCAE v4.0 [ Time Frame: Up to 30 days after completion of study treatment ] [ Designated as safety issue: Yes ]
- Objective response rate (ORR), based on investigator assessment using RECIST v. 1.1 [ Time Frame: Up to 2 years ] [ Designated as safety issue: No ]
- PFS assessed using RECIST v. 1.1 [ Time Frame: Time from study entry to the first occurrence of disease progression, or death from any cause, assessed up to 2 years ] [ Designated as safety issue: No ]
- Duration of objective response (DOR), based on investigator assessment using RECIST v.1.1 [ Time Frame: First tumor assessment that supports the patient's objective response until the time of disease progression or death from any cause, assessed up to 2 years ] [ Designated as safety issue: No ]
- Clinical benefit rate, defined as the proportion of patients who achieve an objective response (complete response [CR] or partial response [PR]), or maintain SD for at least 6 months from study entry, based on investigator assessment using RECIST v. 1.1 [ Time Frame: Up to 2 years ] [ Designated as safety issue: No ]
|Study Start Date:||October 2013|
|Estimated Primary Completion Date:||June 2015 (Final data collection date for primary outcome measure)|
Experimental: Treatment (ado-trastuzumab emtansine)
Patients receive trastuzumab emtansine IV over 30-90 minutes on day 1. Treatment repeats every 21 days for 2 courses in the absence of disease progression or unacceptable toxicity. Patients achieving response may continue treatment.
Biological: ado-trastuzumab emtansine
Other Names:Other: laboratory biomarker analysis
Correlative studiesOther: pharmacological study
Other Name: pharmacological studies
I. To assess change in thrombokinetics (platelet circulation life span) and megakaryopoiesis effects in bone marrow.
I. To evaluate the progression free survival (PFS), duration of response, benefit rate (as defined by stable disease, partial response, or complete response by Response Evaluation Criteria in Solid Tumors [RECIST] v 1.1), overall response rate (as defined by partial or complete response by RECIST v 1.1), and survival.
II. To evaluate the safety of trastuzumab emtansine (ado-trastuzumab emtansine) (non-platelet toxicity).
III. To evaluate the pharmacokinetics of trastuzumab emtansine.
Patients receive trastuzumab emtansine intravenously (IV) over 30-90 minutes on day 1. Treatment repeats every 21 days for 2 courses in the absence of disease progression or unacceptable toxicity. Patients achieving response may continue treatment.
After completion of study treatment, patients are followed up periodically.
|United States, Washington|
|Fred Hutchinson Cancer Research Center/University of Washington Cancer Consortium||Not yet recruiting|
|Seattle, Washington, United States, 98109|
|Contact: Vijayakrishna K. Gadi 206-288-2222|
|Principal Investigator: Vijayakrishna K. Gadi|
|Principal Investigator:||Vijayakrishna Gadi||Fred Hutchinson Cancer Research Center/University of Washington Cancer Consortium|