Adverse reactions
The following adverse reactions are discussed elsewhere in the labeling: Venous Thromboembolic Events [see Warnings and Precautions (5.1) ] Interstitial Lung Disease/Pneumonitis [see Warnings and Precautions (5.2) ] Dermatologic Adverse Reactions [see Warnings and Precautions (5.3) ] Hepatotoxicity [see Warnings and Precautions (5.4) ] Ocular Toxicity [see Warnings and Precautions (5.5) ] LAZCLUZE in Combination with Amivantamab The most common adverse reactions (≥ 20%) were rash, nail toxicity, infusion-related reaction (amivantamab), musculoskeletal pain, edema, stomatitis, VTE, paresthesia, fatigue, diarrhea, constipation, COVID-19, hemorrhage, dry skin, decreased appetite, pruritus, and nausea.
( 6.1 ) The most common Grade 3 or 4 laboratory abnormalities (≥ 2%) were decreased albumin, decreased sodium, increased ALT, decreased potassium, decreased hemoglobin, increased AST, increased GGT, and increased magnesium. ( 6.1 ) To report SUSPECTED ADVERSE REACTIONS, contact Janssen Biotech, Inc. at 1-800-526-7736 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch.
6.1Clinical Trials Experience
Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in practice. The data described in WARNINGS AND PRECAUTIONS and below reflect exposure to LAZCLUZE in combination with amivantamab in 421 previously untreated patients with locally advanced or metastatic NSCLC whose tumors have EGFR exon 19 deletions or exon 21 L858R substitution mutations in MARIPOSA [see Clinical Studies (14) ] .
Patients received LAZCLUZE 240 mg orally once daily in combination with amivantamab intravenously at 1,050 mg (for patients < 80 kg) or 1,400 mg (for patients ≥ 80 kg) once weekly for 4 weeks, then every 2 weeks thereafter starting at week 5. Among the 421 patients who received LAZCLUZE in combination with amivantamab, 84% were exposed to LAZCLUZE for ≥ 6 months and 73% were exposed to LAZCLUZE for > 1 year. The median age of patients who received LAZCLUZE in combination with amivantamab was 64 years (25 to 88); 64% were female; 59% were Asian, 38% were White, 1.7% were American Indian or Alaska Native, 0.7% were Black or African American, 1% were of unknown or other races; 13% were Hispanic or Latino; 67% had Eastern Cooperative Oncology Group (ECOG) performance status (PS) of 1, 33% had ECOG PS of 0; 60% had EGFR exon 19 deletions, and 40% had EGFR exon 21 L858R substitution mutations.
Serious adverse reactions occurred in 49% of patients who received LAZCLUZE in combination with amivantamab. Serious adverse reactions occurring in ≥ 2% of patients included VTE (11%), pneumonia (4%), rash and ILD/pneumonitis (2.9% each), COVID-19 (2.4%), and pleural effusion and infusion-related reaction (amivantamab) (2.1% each). Fatal adverse reactions occurred in 7% of patients who received LAZCLUZE in combination with amivantamab due to death not otherwise specified (1.2%); sepsis and respiratory failure (1% each); pneumonia, myocardial infarction, and sudden death (0.7% each); cerebral infarction, pulmonary embolism (PE), and COVID-19 infection (0.5% each); and ILD/pneumonitis, acute respiratory distress syndrome (ARDS), and cardiopulmonary arrest (0.2% each).
Permanent discontinuation of LAZCLUZE due to an adverse reaction occurred in 21% of patients. Adverse reactions which resulted in permanent discontinuation of LAZCLUZE in ≥ 1% of patients included ILD/pneumonitis, pneumonia, VTE, rash, respiratory failure, and sudden death. Dosage interruption of LAZCLUZE due to an adverse reaction occurred in 72% of patients. Adverse reactions which required dosage interruption in ≥ 5% of patients were rash, nail toxicity, COVID-19, VTE, increased ALT, and increased AST.
Dose reductions of LAZCLUZE due to an adverse reaction occurred in 42% of patients. Adverse reactions requiring LAZCLUZE dose reductions in ≥ 5% of patients were rash and nail toxicity. The most common adverse reactions (≥ 20%) were rash, nail toxicity, infusion-related reaction (amivantamab), musculoskeletal pain, edema, stomatitis, VTE, paresthesia, fatigue, diarrhea, constipation, COVID-19, hemorrhage, dry skin, decreased appetite, pruritus, and nausea.
The most common Grade 3 or 4 laboratory abnormalities (≥ 2%) were decreased albumin, decreased sodium, increased ALT, decreased potassium, decreased hemoglobin, increased AST, increased GGT, and increased magnesium. Table 3 summarizes the adverse reactions (≥ 10%) in MARIPOSA. Table 3: Adverse Reactions (≥ 10%) in Patients with NSCLC with Exon 19 Deletion or Exon 21 L858R Substitution Mutations in MARIPOSA Adverse Reaction LAZCLUZE in combination with amivantamab (N=421) Osimertinib (N=428) All Grades (%) Grade 3 or 4 (%) All Grades (%) Grade 3 or 4 (%) Skin and subcutaneous tissue disorders Rash Grouped terms 86 26 48
1.2 Nail toxicity 71 11 34
0.2 Injury, poisoning and procedural complications Infusion-related reaction Applicable only to amivantamab 63 6 0 0 Musculoskeletal and connective tissue disorders Musculoskeletal pain 47 2.1 39
1.9 Gastrointestinal disorders Stomatitis 43 2.4 27
0.9 Constipation 29 0 13 0 Nausea 21 1.2 14
0.2Vomiting 12 0.5 5 0
Abdominal pain 11 0 10 0 Hemorrhoids 10 0.2 2.1
0.2 General disorders and administration site conditions Edema 43 2.6 8 0 Fatigue 32 3.8 20
1.9Pyrexia 12 0 9 0
Vascular disorders Venous thromboembolism 36 11 8
1.2 Nervous system disorders Paresthesia 35 1.7 10
0.2Dizziness 14 0 10 0 Headache 13 0.2 13 0 Infections
and infestations COVID-19 26 1.7 24
1.4Conjunctivitis 11 0.2 1.6 0 Metabolism
and nutrition disorders Decreased appetite 24 1 18
1.4 Respiratory, thoracic and mediastinal disorders Cough 19 0 23 0 Dyspnea 14 1.7 17
3.5 Eye disorders Ocular toxicity 16 0.7 7 0 Psychiatric disorders Insomnia 10 0 11 0 Clinically relevant adverse reactions occurring in < 10% of patients who received LAZCLUZE in combination with amivantamab included skin ulcer (applicable to amivantamab) and ILD/pneumonitis. Table 4 summarizes the laboratory abnormalities in MARIPOSA. Table 4: Select Laboratory Abnormalities (≥ 20%) That Worsened from Baseline in Patients with NSCLC with EGFR Exon 19 Deletion or Exon 21 L858R Substitution Mutations in MARIPOSA The denominator used to calculate the rate is the number of patients with a baseline value and at least one post-treatment value for the specific lab test.
Laboratory Abnormality LAZCLUZE in combination with amivantamab (N=421) Osimertinib (N=428) All Grades (%) Grade 3 or 4 (%) All Grades (%) Grade 3 or 4 (%) Chemistry Decreased albumin 89 8 22
0.2 Increased ALT 65 7 29
2.6 Increased AST 52 3.8 36
1.9 Increased alkaline phosphatase 45 0.5 15
0.5 Decreased calcium (corrected) 41 1.4 27
0.7 Increased GGT 39 2.6 24
1.9 Decreased sodium 38 7 35 5 Decreased potassium 30 5 15
1.2 Increased creatinine 26 0.7 35
0.7 Decreased magnesium 25 0.7 10
0.2 Increased magnesium 12 2.6 20
4.8Hematology
Decreased platelet count 52 0.7 57
1.4 Decreased hemoglobin 47 3.8 56
1.9 Decreased white blood cell 38 1.0 66
0.7 Decreased neutrophils 15 1.4 33 1.4
