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XALKORI®Adverse Reactions (crizotinib)

6 ADVERSE REACTIONS

The following clinically significant adverse reactions are described elsewhere in the labeling:

6.1 Clinical 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 clinical practice.

The data in the Warnings and Precautions reflect exposure to XALKORI in 1719 patients with NSCLC who received XALKORI 250 mg twice daily enrolled on Studies 1 (including an additional 109 patients who crossed over from the control arm), 2, 3, a single-arm trial (n=1063) of ALK-positive NSCLC, and an additional ALK-positive NSCLC expansion cohort of a dose finding study (n=154). The data also reflect exposure to XALKORI in 121 patients ages 1 to ≤21 years with relapsed or refractory tumors, including 26 patients with systemic ALCL, in a single-arm trial (Study ADVL0912).

ALK- or ROS1-Positive Metastatic NSCLC

The data described below is based primarily on 343 patients with ALK-positive metastatic NSCLC who received XALKORI 250 mg orally twice daily from 2 open-label, randomized, active-controlled trials (Studies 1 and 2). The safety of XALKORI was also evaluated in 50 patients with ROS1-positive metastatic NSCLC from a single-arm study (Study 3).

The most common adverse reactions (≥25%) of XALKORI in patients with NSCLC are vision disorders, nausea, diarrhea, vomiting, edema, constipation, elevated transaminases, fatigue, decreased appetite, upper respiratory infection, dizziness, and neuropathy.

Previously Untreated ALK-Positive Metastatic NSCLC - Study 1 (PROFILE 1014)

The data in Table 7 are derived from 340 patients with ALK-positive metastatic NSCLC who had not received previous systemic treatment for advanced disease who received treatment in a randomized, multicenter, open-label, active-controlled trial (Study 1). Patients in the XALKORI arm (n=171) received XALKORI 250 mg orally twice daily until documented disease progression, intolerance to therapy, or the investigator determined that the patient was no longer experiencing clinical benefit. A total of 169 patients in the chemotherapy arm received pemetrexed 500 mg/m2 with cisplatin 75 mg/m2 (n=91) or carboplatin at a dose calculated to produce an AUC of 5 or 6 mg×min/mL (n=78). Chemotherapy was given by intravenous infusion every 3 weeks for up to 6 cycles, in the absence of dose-limiting chemotherapy-related toxicities. After 6 cycles, patients remained on study with no additional anticancer treatment, and tumor assessments continued until documented disease progression.

The median duration of study treatment was 10.9 months for patients in the XALKORI arm and 4.1 months for patients in the chemotherapy arm. Median duration of treatment was 5.2 months for patients who received XALKORI after cross over from chemotherapy. Across the 340 patients who were treated in Study 1, the median age was 53 years; 16% of patients were older than 65 years. A total of 62% of patients were female and 46% were Asian.

Serious adverse events were reported in 34% of patients treated with XALKORI. The most frequent serious adverse events reported in patients treated with XALKORI were dyspnea (4.1%) and pulmonary embolism (2.9%). Fatal adverse events in XALKORI-treated patients occurred in 2.3% patients, consisting of septic shock, acute respiratory failure, and diabetic ketoacidosis.

Dose reductions due to adverse reactions were required in 6% of XALKORI-treated patients. The most frequent adverse reactions that led to dose reduction in these patients were nausea (1.8%) and elevated transaminases (1.8%).

Permanent discontinuation of XALKORI treatment for adverse reactions was 8%. The most frequent adverse reactions that led to permanent discontinuation in XALKORI-treated patients were elevated transaminases (1.2%), hepatotoxicity (1.2%), and ILD (1.2%).

Tables 7 and 8 summarize common adverse reactions and laboratory abnormalities in XALKORI-treated patients.

Table 7. Adverse Reactions Reported at a Higher Incidence (≥5% Higher for All Grades or ≥2% Higher for Grades 3–4) with XALKORI than Chemotherapy in Study 1*
Adverse ReactionXALKORI
(N=171)
Chemotherapy
(Pemetrexed/Cisplatin or Pemetrexed/Carboplatin)
(N=169)
All Grades
(%)
Grade 3–4
(%)
All Grades
(%)
Grade 3–4
(%)
*
Adverse reactions were graded using NCI CTCAE version 4.0.
Includes cases reported within the clustered terms:
Bradycardia (Bradycardia, Sinus bradycardia).
Vision Disorder (Diplopia, Photophobia, Photopsia, Reduced visual acuity, Blurred vision, Vitreous floaters, Visual impairment).
§
Abdominal pain (Abdominal discomfort, Abdominal pain, Lower abdominal pain, Upper abdominal pain, Abdominal tenderness).
Esophagitis (Esophagitis, Esophageal ulcer).
#
Edema (Edema, Peripheral edema, Face edema, Generalized edema, Local swelling, Periorbital edema).
Þ
Upper respiratory infection (Nasopharyngitis, Pharyngitis, Rhinitis, Upper respiratory tract infection).
ß
Dizziness (Balance disorder, Dizziness, Postural dizziness, Presyncope).
Cardiac
  Bradycardia14110
  Electrocardiogram QT prolonged6220
Eye
  Vision disorder711100
Gastrointestinal
  Diarrhea612131
  Vomiting462363
  Constipation432300
  Abdominal pain§260120
  Dyspepsia14020
  Dysphagia10121
  Esophagitis6210
General
  Edema#491121
  Pyrexia190111
Infections
  Upper respiratory infectionÞ320121
Investigations
  Increased weight8120
Musculoskeletal and Connective Tissue
  Pain in extremity16070
  Muscle spasm8021
Nervous System
  Dysgeusia26050
  Headache221150
  Dizzinessß180101

Additional adverse reactions occurring at an overall incidence between 1% and 60% in patients treated with XALKORI included nausea (56%), decreased appetite (30%), fatigue (29%), neuropathy (21%; gait disturbance, hypoesthesia, muscular weakness, neuralgia, neuropathy peripheral, paresthesia, peripheral sensory neuropathy, polyneuropathy, sensory disturbance), rash (11%), renal cyst (5%), ILD (1%; ILD, pneumonitis), syncope (1%), and decreased blood testosterone (1%; hypogonadism).

Table 8. Laboratory Abnormalities with Grades 3–4 Occurring in ≥4% of XALKORI-Treated Patients in Study 1
XALKORIChemotherapy
Laboratory AbnormalityAny Grade
(%)
Grade 3–4
(%)
Any Grade
(%)
Grade 3–4
(%)
Additional laboratory test abnormality in patients treated with XALKORI was an increase in creatinine (Any Grade: 99%; Grade 3: 2%; Grade 4: 0%) compared to the chemotherapy arm (Any Grade: 92%; Grade 3: 0%; Grade 4: 1%).
Hematology
  Neutropenia52115916
  Lymphopenia4875313
Chemistry
  Increased ALT7915332
  Increased AST668281
  Hypophosphatemia3210216

Previously Treated ALK-Positive Metastatic NSCLC - Study 2 (PROFILE 1007)

The data in Table 9 are derived from 343 patients with ALK-positive metastatic NSCLC enrolled in a randomized, multicenter, active-controlled, open-label trial (Study 2). Patients in the XALKORI arm (n=172) received XALKORI 250 mg orally twice daily until documented disease progression, intolerance to therapy, or the investigator determined that the patient was no longer experiencing clinical benefit. A total of 171 patients in the chemotherapy arm received pemetrexed 500 mg/m2 (n=99) or docetaxel 75 mg/m2 (n=72) by intravenous infusion every 3 weeks until documented disease progression, intolerance to therapy, or the investigator determined that the patient was no longer experiencing clinical benefit. Patients in the chemotherapy arm received pemetrexed unless they had received pemetrexed as part of first-line or maintenance treatment.

The median duration of study treatment was 7.1 months for patients who received XALKORI and 2.8 months for patients who received chemotherapy. Across the 347 patients who were randomized to study treatment (343 received at least 1 dose of study treatment), the median age was 50 years; 14% of patients were older than 65 years. A total of 56% of patients were female and 45% of patients were Asian.

Serious adverse reactions were reported in 37% of patients treated with XALKORI and 23% of patients in the chemotherapy arm. The most frequent serious adverse reactions reported in patients treated with XALKORI were pneumonia (4.1%), pulmonary embolism (3.5%), dyspnea (2.3%), and ILD (2.9%). Fatal adverse reactions in XALKORI-treated patients in Study 2 occurred in 5% of patients, consisting of: acute respiratory distress syndrome, arrhythmia, dyspnea, pneumonia, pneumonitis, pulmonary embolism, ILD, respiratory failure, and sepsis.

Dose reductions due to adverse reactions were required in 16% of XALKORI-treated patients. The most frequent adverse reactions that led to dose reduction in the patients treated with XALKORI were increased ALT (8%) including some patients with concurrent increased AST, QTc prolongation (2.9%), and neutropenia (2.3%).

XALKORI was discontinued for adverse reactions in 15% of patients. The most frequent adverse reactions that led to discontinuation of XALKORI were ILD (1.7%), increased ALT and AST (1.2%), dyspnea (1.2%), and pulmonary embolism (1.2%).

Tables 9 and 10 summarize common adverse reactions and laboratory abnormalities in XALKORI-treated patients.

Table 9. Adverse Reactions Reported at a Higher Incidence (≥5% Higher for All Grades or ≥2% Higher for Grades 3–4) with XALKORI than Chemotherapy in Study 2*
Adverse ReactionXALKORI
(N=172)
Chemotherapy
(Pemetrexed or Docetaxel)
(N=171)
All Grades
(%)
Grade 3–4
(%)
All Grades
(%)
Grade 3–4
(%)
*
Adverse reactions were graded using NCI CTCAE version 4.0.
Includes cases reported within the clustered terms:
Dizziness (Balance disorder, Dizziness, Postural dizziness).
Vision Disorder (Diplopia, Photophobia, Photopsia, Blurred vision, Reduced visual acuity, Visual impairment, Vitreous floaters).
§
Bradycardia (Bradycardia, Sinus bradycardia).
Upper respiratory infection (Laryngitis, Nasopharyngitis, Pharyngitis, Rhinitis, Upper respiratory tract infection).
#
Pulmonary embolism (Pulmonary artery thrombosis, Pulmonary embolism).
Þ
Edema (Face edema, Generalized edema, Local swelling, Localized edema, Edema, Peripheral edema, Periorbital edema).
Nervous System
  Dysgeusia26090
  Dizziness22180
  Syncope3300
Eye
  Vision disorder60090
Cardiac
  Electrocardiogram QT prolonged5300
  Bradycardia§5000
Investigations
  Decreased weight10140
Gastrointestinal
  Diarrhea600191
  Nausea551371
  Vomiting471180
  Constipation422230
  Dyspepsia8030
Infections
  Upper respiratory infection260131
Respiratory, Thoracic and Mediastinal
  Pulmonary embolism#6522
General
  EdemaÞ310160

Additional adverse reactions occurring at an overall incidence between 1% and 30% in patients treated with XALKORI included decreased appetite (27%), fatigue (27%), neuropathy (19%; dysesthesia, gait disturbance, hypoesthesia, muscular weakness, neuralgia, peripheral neuropathy, paresthesia, peripheral sensory neuropathy, polyneuropathy, burning sensation in skin), rash (9%), ILD (4%; acute respiratory distress syndrome, ILD, pneumonitis), renal cyst (4%), esophagitis (2%), hepatic failure (1%), and decreased blood testosterone (1%; hypogonadism).

Table 10. Laboratory Abnormalities with Grades 3–4 Occurring in ≥4% of XALKORI-Treated Patients in Study 2
XALKORIChemotherapy
Laboratory AbnormalityAny Grade
(%)
Grade 3–4
(%)
Any Grade
(%)
Grade 3–4
(%)
Additional laboratory test abnormality in patients treated with XALKORI was an increase in creatinine (Any Grade: 96%; Grade 3: 1%; Grade 4: 0%) compared to the chemotherapy arm (Any Grade: 72%; Grade 3: 0%; Grade 4: 0%).
Hematology
  Lymphopenia5196025
  Neutropenia49122812
Chemistry
  Increased ALT7617384
  Increased AST619330
  Hypophosphatemia285256
  Hypokalemia184101

ROS1-Positive Metastatic NSCLC - Study 3 (PROFILE 1001)

The safety profile of XALKORI from Study 3, which was evaluated in 50 patients with ROS1-positive metastatic NSCLC, was generally consistent with the safety profile of XALKORI evaluated in patients with ALK-positive metastatic NSCLC (n=1669). Vision disorders occurred in 92% of patients in Study 3; 90% were Grade 1 and 2% were Grade 2. The median duration of exposure to XALKORI was 34.4 months.

Description of Selected Adverse Reactions in Patients with Metastatic NSCLC

Vision disorders: Vision disorders, most commonly visual impairment, photopsia, blurred vision, or vitreous floaters, occurred in 63% of 1719 patients. The majority (95%) of these patients had Grade 1 visual adverse reactions. There were 0.8% of patients with Grade 3 and 0.2% of patients with Grade 4 visual impairment. Based on the Visual Symptom Assessment Questionnaire (VSAQ-ALK), patients treated with XALKORI in Studies 1 and 2 reported a higher incidence of visual disturbances compared to patients treated with chemotherapy. The onset of vision disorder generally was within the first week of drug administration. The majority of patients on the XALKORI arms in Studies 1 and 2 (>50%) reported visual disturbances which occurred at a frequency of 4–7 days each week, lasted up to 1 minute, and had mild or no impact (scores 0 to 3 out of a maximum score of 10) on daily activities as captured in the VSAQ-ALK questionnaire.

Neuropathy: Neuropathy, most commonly sensory in nature, occurred in 25% of 1719 patients. Most events (95%) were Grade 1 or Grade 2 in severity.

Renal cysts: Renal cysts were experienced by 3.0% of 1719 patients. The majority of renal cysts in XALKORI-treated patients were complex. Local cystic invasion beyond the kidney occurred, in some cases with imaging characteristics suggestive of abscess formation. However, across clinical trials no renal abscesses were confirmed by microbiology tests.

Renal toxicity: The estimated glomerular filtration rate (eGFR) decreased from a baseline median of 96.42 mL/min/1.73 m2 (n=1681) to a median of 80.23 mL/min/1.73 m2 at 2 weeks (n=1499) in patients with ALK-positive advanced NSCLC who received XALKORI in clinical trials. No clinically relevant changes occurred in median eGFR from 12 to 104 weeks of treatment. Median eGFR slightly increased (83.02 mL/min/1.73 m2) 4 weeks after the last dose of XALKORI. Overall, 76% of patients had a decrease in eGFR to <90 mL/min/1.73 m2, 38% had a decrease to eGFR to <60 mL/min/1.73 m2, and 3.6% had a decrease to eGFR to <30 mL/min/1.73 m2.

Relapsed or Refractory, Systemic ALK-Positive ALCL - Study ADVL0912

The safety of XALKORI was evaluated in Study ADVL0912 [see Clinical Studies 14.2], which included 26 patients with relapsed or refractory, systemic ALCL after at least one systemic therapy. Eligible patients were 1 to ≤21 years of age and were required to have an absolute neutrophil count ≥1000/mm3 (750/mm3 if bone marrow was involved), platelet count ≥75,000/mm3 (25,000/mm3 if bone marrow was involved), creatinine clearance ≥70ml/min/1.73m2, and QTc ≤480 msec. The study excluded patients with ALT >2.5 times upper limit of normal (ULN), bilirubin ≤1.5 times ULN, and central nervous system tumors.

Patients with ALCL received XALKORI 165 mg/m2 or 280 mg/m2 orally twice daily until disease progression or unacceptable toxicity. The median duration of exposure was 5.4 months (range 1.8, 82.3 months), with 46% of patients treated for at least 6 months and 35% of patients treated for at least 12 months.

Serious adverse reactions occurred in 35% of patients treated with XALKORI. The most frequent serious adverse reactions were neutropenia (12%) and hypotension (8%).

Dose interruptions and dose reductions occurred in 77% and 19% of patients, respectively. XALKORI was discontinued for an adverse reaction in 8% of patients.

The most common adverse reactions (≥35%), excluding laboratory abnormalities, were diarrhea, vomiting, nausea, vision disorder, headache, musculoskeletal pain, stomatitis, fatigue, decreased appetite, pyrexia, abdominal pain, cough, and pruritis.

The most common Grade 3 or 4 laboratory abnormalities (≥15%) included neutropenia, lymphopenia, and thrombocytopenia. Grade 4 laboratory abnormalities (≥15%) included neutropenia (62%), lymphopenia (35%), and thrombocytopenia (19%).

Selected adverse reactions are summarized in Table 11.

Table 11. Adverse Reactions in ≥20% of Patients with Systemic ALCL in Study ADVL0912
Adverse ReactionXALKORI
N=26
All Grades
(%)
Grade 3–4
(%)
Adverse reactions were graded using NCI CTCAE version 4.0.
*
Derived from laboratory values collected in Cycle 1 and adverse reaction data.
Includes neutrophil count decreased.
Includes lymphocyte count decreased.
§
Includes platelet count decreased.
Includes oral pain, oropharyngeal pain, stomatitis.
#
Includes blurred vision, visual impairment, photophobia, photopsia, reduced visual acuity, vitreous floaters, cyanopsia, heterophoria, visual field defect.
Þ
Includes arthralgia, back pain, myalgia, non-cardiac chest pain, pain in extremity.
ß
Includes peripheral edema, face edema, periorbital edema, localized edema.
à
Includes rash maculopapular, rash pustular.
è
Includes upper respiratory tract infection, pharyngitis, rhinitis, sinusitis.
Blood and Lymphatic System Disorders*
  Neutropenia10077
  Lymphopenia5838
  Anemia543.8
  Thrombocytopenia§3819
Gastrointestinal Disorders
  Diarrhea9212
  Vomiting923.8
  Nausea773.8
  Abdominal Pain500
  Stomatitis468
  Constipation310
Renal Disorders*
  Blood creatinine increased1000
Investigations*
  ALT increased813.8
  AST increased653.8
  Hypocalcemia623.8
  Hypoalbuminemia540
  Hyperglycemia460
  Hypomagnesemia460
  Hypoglycemia350
  Hypokalemia313.8
  Hypermagnesemia270
  Hyperkalemia230
Nervous System Disorders
  Headache583.8
  Dysgeusia230
  Dizziness230
Eye Disorders
  Vision disorders#650
Musculoskeletal Disorders
  Musculoskeletal painÞ5812
General Disorders
  Fatigue460
  Pyrexia380
  Edemaß270
  Chills230
Metabolism and Nutrition Disorders
  Decreased appetite420
Skin and Subcutaneous Disorders
  Pruritus350
  Rashà230
Infections
  Upper respiratory tract infectionè310
Respiratory Disorders
  Cough350
  Rhinitis allergic230
Vascular Disorders
  Hypertension310

Clinically relevant adverse reactions in <20% of patients treated with XALKORI included:

  • Cardiac disorders: Bradycardia (19%), electrocardiogram QT prolonged (8%)
  • Vascular Disorders: Hypotension (19%)
  • Investigations: Alkaline phosphatase increase (19%), hypernatremia (19%), GGT increase (8%), hyponatremia (12%), hyperuricemia (12%), hypophosphatemia (12%)
  • Nervous System Disorders: Peripheral neuropathy (12%)
  • Gastrointestinal disorders: Esophagitis (8%)
  • Blood and lymphatic disorders: Febrile neutropenia (3.8%)
  • Musculoskeletal disorders: Muscular weakness (8%)
  • Renal Disorder: Acute renal injury (8%)

6.2 Postmarketing Experience

The following additional adverse reaction has been identified during postapproval use of XALKORI. Because this reaction is reported voluntarily from a population of uncertain size, it is not always possible to reliably estimate the frequency or establish a causal relationship to drug exposure.

Investigations: Increased blood creatine phosphokinase

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