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This image shows the components of KADCYLA:
Trastuzumab–monoclonal antibody4
MCC–stable linker4,6
DM1–cytotoxic agent4,7
Overview
This image shows the trial design of KATHERINE.
Data
KATHERINE was a randomized, multicenter, open-label trial of 1,486 patients with HER2+ early breast cancer. Patients were required to have had residual invasive disease in the breast and/or axillary lymph nodes following neoadjuvant treatment with taxane + trastuzumab-based therapy. Patients were randomized to 3.6 mg/kg of KADCYLA or 6 mg/kg of Herceptin® (trastuzumab), with 743 patients in each arm.
Overview
This image shows a Kaplan-Meier curve of invasive disease-free survival (iDFS) in KATHERINE.
Data
Invasive disease-free survival, the primary end point, was significantly higher among patients who received KADCYLA than among those who received trastuzumab (hazard ratio, 0.54, 95% confidence interval [CI], 0.44-0.66; P<0.0001). 7-year iDFS was 80.8% in the KADCYLA group, compared to 67.1% in the trastuzumab group, representing a 46% reduction in the risk of recurrence
Overview
This image shows where KADCYLA fits in the HER2+ early breast cancer treatment plan and how many cycles of it to give.
Details
Following 3-6 cycles of neoadjuvant taxane + trastuzumab-based treatment, and surgery, give KADCYLA for 14 cycles, or until disease recurrence or unmanageable toxicity occurs.
Overview
This image shows the infusion schedule for KADCYLA in early breast cancer.
Details
The initial infusion of KADCYLA in EBC takes 90 minutes plus an observation time of at least 90 minutes to monitor for infusion-related reactions. If prior infusions were well tolerated, subsequent infusions take 30 minutes plus an observation time of at least 30 minutes.
Treat for a total of 14 cycles (every 3 weeks) unless there is disease recurrence or unmanageable toxicity.
Overview
This image shows the dose reduction schedule for adverse reactions to KADCYLA.
Details
The starting dose for KADCYLA is 3.6 mg/kg. The first dose reduction for KADCYLA is 3 mg/kg. The second dose reduction for KADCYLA is 2.4 mg/kg. After that, discontinue KADCYLA.
Overview
This image shows a Kaplan-Meier curve of overall survival (OS) in KATHERINE.
Data
Overall survival, the second interim endpoint, was significantly higher among patients who received KADCYLA than among those who received trastuzumab (hazard ratio, 0.66 (95% CI: 0.51-0.87; P=0.0027). 7-year OS was 89.1% in the KADCYLA group, compared to 84.4% in the trastuzumab group, representing a 34% reduction in the risk of death.
This image shows subgroup analysis of invasive disease-free survival, presented as a forest plot.
This image shows the 3-year subgroup analysis of invasive disease-free survival, presented as a forest plot.
This image shows the 7-year subgroup analysis of invasive disease-free survival, presented as a forest plot.
This image shows the components of KADCYLA:
Trastuzumab-monoclonal antibody1
MCC-stable linker1,3
DM1 cytotoxic agent1,4
Overview
This image shows the trial design of EMILIA.
Details
EMILIA was a randomized, open-label, international trial involving 991 patients with HER2+, unresectable, locally advanced or metastatic breast cancer who previously received trastuzumab and a taxane (separately or in combination). Inclusion criteria included progression during or after the most recent treatment for locally advanced or metastatic disease or within 6 months after treatment for early-stage disease. Four hundred ninety-five patients were randomized to 21-day cycles of 3.6 mg/kg IV of KADCYLA on day 1. Four hundred ninety-six patients were randomized to 1,250 mg of lapatinib by mouth once daily, and 1,000 mg/m² of capecitabine by mouth twice daily on days 1-14. Treatment continued until disease progression or unacceptable toxicity.
Overview
This image shows the trial design of TH3RESA.
Details
TH3RESA was a phase 3, randomized, multicenter, open-label trial of 602 patients with HER2+ advanced breast cancer (ABC). Patients were required to have had disease progression after treatment with ≥2 prior HER2-directed therapies for ABC and prior treatment with trastuzumab, lapatinib, and a taxane. Patients were randomized to 3.6 mg/kg IV of KADCYLA or treatment of physician’s choice (TPC)* per local practice, with 404 patients in the KADCYLA arm and 198 patients in the TPC arm. Patients in the TPC arm who had disease progression had the option to cross over to the KADCYLA arm, and 93 patients did so.
Overview
This image shows overall survival (OS) results for EMILIA.
Data
KADCYLA significantly increased median OS (30.9 months, vs 25.1 months with lapatinib + capecitabine—a nearly 6-month improvement in median OS; hazard ratio for death from any cause, 0.68; 95% confidence interval, 0.55 to 0.85; P=0.0006).
Overview
This image shows progression-free survival (PFS) results for EMILIA.
Data
Treatment with KADCYLA significantly improved PFS as assessed by independent review (median survival, 9.6 months, vs 6.4 months with lapatinib + capecitabine—a 50% improvement in median PFS; stratified hazard ratio for progression or death from any cause, 0.65; 95% confidence interval, 0.55 to 0.77; P<0.0001).
Overview
This image shows objective response rate (ORR) results for EMILIA.
Data
Patients treated with KADCYLA had a higher ORR (43.6%, vs 30.8% with lapatinib + capecitabine—a 12.7% improvement in ORR; 95% confidence interval, 6.0-19.4%).
Overview
This image shows duration of response (DoR) results for EMILIA.
Data
Treatment with KADCYLA significantly improved DoR (median DoR, 12.6 months, vs 6.5 months with lapatinib + capecitabine—nearly doubling DoR; 95% confidence interval, 8.4-20.8).
Overview
This image shows overall survival (OS) in patients with central nervous system (CNS) metastases at baseline in EMILIA.
Data
The estimated median OS was 26.8 months with KADCYLA vs 12.9 months with lapatinib + capecitabine.
Overview
This image shows progression-free survival (PFS) by independent review committee (IRC) in patients with central nervous system (CNS) metastases at baseline in EMILIA.
Data
The estimated median PFS was 5.9 months with KADCYLA vs 5.7 months with lapatinib + capecitabine.
Overview
This image shows progression-free survival (PFS) by investigator results for TH3RESA.
Data
Median PFS with KADCYLA was 6.2 months, vs 3.3 months with treatment of physician’s choice (TPC). Stratified HR=0.528; 95% confidence interval, 0.422 to 0.661; P<0.0001.
Overview
This image shows overall survival (OS) results for TH3RESA in the ITT population.
Data
Median OS with KADCYLA was 22.7 months, vs 15.8 months with treatment of physician’s choice (TPC). Stratified HR=0.68; 95% confidence interval, 0.54 to 0.85; P=0.0007.
Overview
This image shows the most common severe (Grade ≥3) adverse reactions in EMILIA.
Data
Numerical values presented on the image:
Grade ≥3 nausea seen in 0.8% of KADCYLA patients, compared to 2.5% of lapatinib + capecitabine patients
Grade ≥3 fatigue seen in 2.5% of KADCYLA patients, compared to 3.5% of lapatinib + capecitabine patients
Grade ≥3 thrombocytopenia seen in 15% of KADCYLA patients, compared to 0.4% of lapatinib + capecitabine patients
Grade ≥3 increased transaminases seen in 8.0% of KADCYLA patients, compared to 2.5% of lapatinib + capecitabine patients
Grade ≥3 diarrhea seen in 1.6% of KADCYLA patients, compared to 21% of lapatinib + capecitabine patients
Grade ≥3 peripheral neuropathy seen in 2.2% of KADCYLA patients, compared to 0.2% of lapatinib + capecitabine patients
Grade ≥3 vomiting seen in 0.8% of KADCYLA patients, compared to 4.5% of lapatinib + capecitabine patients
Grade ≥3 anemia seen in 4.1% of KADCYLA patients, compared to 2.5% of lapatinib + capecitabine patients
Grade ≥3 stomatitis seen in 0.2% of KADCYLA patients, compared to 2.5% of lapatinib + capecitabine patients
Grade ≥3 hypokalemia seen in 2.7% of KADCYLA patients, compared to 4.7% of lapatinib + capecitabine patients
Grade ≥3 neutropenia seen in 2.0% of KADCYLA patients, compared to 4.3% of lapatinib + capecitabine patients
This image shows recommended dosing for KADCYLA: 3.6 mg/kg every 3 weeks.
Overview
This image shows the infusion schedule for KADCYLA in metastatic breast cancer.
Details
The initial infusion of KADCYLA in EBC takes 90 minutes plus an observation time of at least 90 minutes to monitor for infusion-related reactions. If prior infusions were well tolerated, subsequent infusions take 30 minutes plus an observation time of at least 30 minutes.
Treat until disease progression or unmanageable toxicity.
Overview
This image shows the dose reduction schedule for adverse reactions to KADCYLA.
Details
The starting dose for KADCYLA is 3.6 mg/kg. The first dose reduction for KADCYLA is 3 mg/kg. The second dose reduction for KADCYLA is 2.4 mg/kg. After that, discontinue KADCYLA.
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