EMBER-3: VERZENIO in Combination with Imlunestrant in Advanced or Metastatic Breast Cancer
The safety of VERZENIO in combination with imlunestrant was evaluated in 535 patients with ER+, HER2- locally advanced or metastatic breast cancer previously treated with endocrine therapy with or without a prior CDK4/6 inhibitor in EMBER-3 [see Clinical Studies (14.2)]. Patients received VERZENIO 150 mg orally twice daily in combination with imlunestrant 400 mg orally once daily (N=208), or imlunestrant monotherapy 400 mg, once daily (n=327). Among patients who were treated with VERZENIO in combination with imlunestrant, the median duration of exposure was 7.7 months (range 1 day to 25.3 months).
Serious adverse reactions occurred in 21% of patients who received VERZENIO in combination with imlunestrant. Serious adverse reactions in >1% of patients included pneumonia (2.4%), abdominal pain, and renal failure (each 1.4%). Fatal adverse reactions occurred in 3.8% of patients who received VERZENIO in combination with imlunestrant, including pneumonia (1.4%), myocardial infarction, interstitial lung disease and sepsis (0.5%, each).
Permanent discontinuation of VERZENIO due to an adverse reaction occurred in 3.4% of patients. Adverse reactions which resulted in permanent discontinuation of VERZENIO included: increased ALT (1.4%), bile duct stone, diarrhea, drug-induced liver injury, prolonged QT interval, fatigue, maculo-papular rash, renal failure, and vomiting (0.5% each).
Dosage interruptions of VERZENIO due to an adverse reaction occurred in 59% of patients. Adverse reactions which required dosage interruptions of VERZENIO in ≥2% of patients included diarrhea (20%), neutropenia (10%), decreased neutrophils (8%), anemia (6%), nausea (6%), increased AST (2.4%), fatigue (2.4%), and vomiting (2.4%).
Dose reductions of VERZENIO due to an adverse reaction occurred in 42% of patients. Adverse reactions which required dose reductions of VERZENIO in ≥1% of patients included: diarrhea (20%), neutropenia (5%), nausea (3.4%), decreased neutrophils (3.4%), fatigue (2.4%), anemia (1.9%), increased AST (1.9%), increased ALT (1.4%).
The most common (≥10%) adverse reactions, including laboratory abnormalities were: decreased neutrophils, diarrhea, decreased hemoglobin, decreased lymphocytes, nausea, decreased platelets, fatigue, increased triglycerides, infections, increased AST, increased creatinine, increased ALT, vomiting, musculoskeletal pain, abdominal pain, decreased appetite, increased cholesterol, rash, cough, headache and decreased weight.
Table 14 and 15 summarizes the adverse reactions and laboratory abnormalities, respectively, in EMBER-3.
Table 14: Adverse Reactions (≥10%) in Patients Treated with VERZENIO in combination with Imlunestrant in EMBER-3
|
|
| Adverse Reactiona | VERZENIO plus Imlunestrant N=208 | Imlunestrant N=327 |
All Grades %
| Grades 3 or 4 %
| All Grades %
| Grades 3 or 4 %
|
| Gastrointestinal Disorders |
| Diarrhea
| 86
| 9
| 23
| 0.3
|
| Nausea
| 51
| 1.9
| 18
| 0.3
|
| Vomiting
| 32
| 0.5
| 10
| 0.6
|
| Abdominal painb
| 24
| 1.9
| 11
| 0.3
|
| General Disorders and Administration Site Conditions |
| Fatigueb
| 41
| 5
| 24
| 0.3
|
| Infections and Infestations |
| Infectionsb
| 36
| 7
| 25
| 3.4
|
| Musculoskeletal Disorders |
| Musculoskeletal painb
| 25
| 1.4
| 31
| 2.8
|
| Metabolism and Nutrition Disorders |
| Decreased appetiteb
| 22
| 1
| 9
| 0.3
|
| Skin and Subcutaneous Tissue Disorders |
| Rashb
| 14
| 1.4
| 4.9
| 0
|
| Respiratory, Thoracic and Mediastinal Disorders |
| Coughb
| 13
| 0
| 9
| 0
|
| Nervous System Disorders |
| Headacheb
| 10
| 0.5
| 9
| 0
|
| Investigations |
| Decreased weight
| 10
| 0
| 4.6
| 0
|
Clinically relevant adverse reactions (<10%) in patients who received VERZENIO in combination with imlunestrant included: constipation (9%), stomatitis (9%), fever (9%), urinary tract infection (8%), dizziness (8%), hot flush (6%), insomnia (6%), arrhythmia (6%), alopecia (5%), back pain (4.8%), venous thromboembolic event (4.8%) and interstitial lung disease or pneumonitis (2.9%).
Table 15: Lab Abnormalities (≥10%) in Patients Treated with VERZENIO in Combination with Imlunestrant in EMBER-3
|
|
| Lab Abnormalitya | VERZENIO plus Imlunestrant
b | Imlunestrantb |
All Grades %
| Grades 3 or 4 %
| All Grades %
| Grades 3 or 4 %
|
| Hematology |
| Neutrophils decreased
| 86
| 21
| 28
| 4.3
|
| Hemoglobin decreased
| 81
| 9
| 34
| 2.2
|
| Lymphocytes decreased
| 58
| 9
| 29
| 2.2
|
| Platelets count decreased
| 48
| 2.4
| 18
| 2.8
|
| Chemistry |
| Triglycerides increased
| 40
| 2.3
| 22
| 0
|
| AST increased
| 36
| 2.5
| 27
| 1.9
|
| Creatinine increased
| 36
| 1.1
| 6
| 0.3
|
| ALT increased
| 33
| 5
| 22
| 1.3
|
| Cholesterol increased
| 18
| 0
| 12
| 0.4
|