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BOSULIF®Adverse Reactions (bosutinib)

6 ADVERSE REACTIONS

The following clinically significant adverse reactions are discussed in greater detail in other sections of 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 practice.

The most common adverse reactions, in ≥20% of patients with newly diagnosed CP Ph+ CML or CP, AP, or BP Ph+ CML with resistance or intolerance to prior therapy (N=814) were diarrhea (80%), rash (44%), nausea (44%), abdominal pain (43%), vomiting (33%), fatigue (33%), hepatic dysfunction (33%), respiratory tract infection (25%), pyrexia (24%), and headache (21%).

The most common laboratory abnormalities that worsened from baseline in ≥20% of patients were creatinine increased (93%), hemoglobin decreased (90%), lymphocyte count decreased (72%), platelets decreased (69%), ALT increased (58%), calcium decreased (53%), white blood cell count decreased (52%), absolute neutrophils count decreased (50%), AST increased (50%), glucose increased (46%), phosphorus decreased (44%), urate increased (41%), alkaline phosphatase increased (40%), lipase increased (36%), creatine kinase increased (29%), and amylase increased (24%).

Adverse Reactions in Patients With Newly-Diagnosed CP CML

The clinical trial randomized and treated 533 patients with newly-diagnosed CP CML to receive BOSULIF 400 mg daily or imatinib 400 mg daily as single agents (Newly-Diagnosed CP CML Study) [see Clinical Studies (14.1)]. The safety population (received at least 1 dose of BOSULIF) included:

  • two hundred sixty-eight (268) patients with newly-diagnosed CP CML had a median duration of BOSULIF treatment of 55 months (range: 0.3 to 60 months) and a median dose intensity of 394 mg/day.

Serious adverse reactions occurred in 22% of patients with newly-diagnosed CP CML who received bosutinib. Serious adverse reactions reported in >2% of patients included hepatic dysfunction (4.1%), pneumonia (3.4%), coronary artery disease (3.4%), and gastroenteritis (2.2%). Fatal adverse reactions occurred in 3 patients (1.1%) due to coronary artery disease (0.4%), cardiac failure acute (0.4%), and renal failure (0.4%).

Permanent discontinuation of bosutinib due to an adverse reaction occurred in 20% of patients with newly-diagnosed CP CML who received bosutinib. Adverse reactions which resulted in permanent discontinuation in > 2% of patients included hepatic dysfunction (9%).

Dose modifications (dose interruption or reductions) of bosutinib due to an adverse reaction occurred in 68% of patients with newly-diagnosed CP CML. Adverse reactions which required dose interruptions or reductions in >5% of patients included hepatic dysfunction (27%), thrombocytopenia (16%), diarrhea (16%), lipase increased (10%), neutropenia (7%), abdominal pain (6%), rash (5%).

The most common adverse reactions, in >20% of bosutinib-treated patients with newly-diagnosed CML (N=268) were diarrhea (75%), hepatic dysfunction (45%), rash (40%), abdominal pain (39%), nausea (37%), fatigue (33%), respiratory tract infection (27%), headache (22%), and vomiting (21%).

The most common laboratory abnormalities that worsened from baseline in ≥20% of patients were creatinine increased (94%), hemoglobin decreased (89%), lymphocyte count decreased (84%), ALT increased (68%), platelet count decreased (68%), glucose increased (57%), AST increased (56%), calcium decreased (55%), phosphorus decreased (54%), lipase increased (53%), white blood cell count decreased (50%), absolute neutrophil count decreased (42%), alkaline phosphatase increased (41%), creatine kinase increased (36%), and amylase increased (32%).

Table 4 identifies adverse reactions greater than or equal to 10% for All Grades and Grades 3 or 4 (3/4) for the Phase 3 CP CML safety population.

Table 4: Adverse Reactions (10% or Greater) in Patients With Newly-Diagnosed CML in Bosutinib 400 mg Study*
Bosutinib 400 mg
Chronic Phase CML
(N=268)
Imatinib 400 mg
Chronic Phase CML
(N=265)
System Organ ClassPreferred TermAll Grades
%
Grade 3/4
%
All Grades
%
Grade 3/4
%
*
Based on a Minimum of 57 Months of Follow-up.
Adverse drug reactions are based on all-causality treatment-emergent adverse events.
The commonality stratification is based on 'All Grades' under Total column.
'Grade 3', 'Grade 4' columns indicate maximum toxicity.
Abdominal pain includes the following preferred terms: Abdominal discomfort, Abdominal pain, Abdominal pain lower, Abdominal pain upper, Abdominal tenderness, Dyspepsia, Epigastric discomfort, Gastrointestinal pain.
Hepatic dysfunction includes the preferred terms: Alanine aminotransferase increased, Aspartate aminotransferase, Aspartate aminotransferase increased, Bilirubin conjugated increased, Blood alkaline phosphatase increased, Blood bilirubin increased, Drug-induced liver injury, Gamma-glutamyltransferase increased, Hepatic enzyme increased, Hepatic steatosis, Hepatitis, Hepatitis toxic, Hepatocellular injury, Hepatotoxicity, Hyperbilirubinemia, Jaundice, Liver disorder, Liver function test increased, Ocular icterus, Transaminases increased.
§
Rash includes the following preferred terms: Acne, Blister, Dermatitis, Dermatitis acneiform, Dermatitis bullous, Dermatitis exfoliative generalized, Drug reaction with eosinophilia and systemic symptoms, Dyshidrotic eczema, Eczema, Eczema asteatotic, Erythema, Erythema nodosum, Genital rash, Lichen planus, Perivascular dermatitis, Photosensitivity reaction, Psoriasis, Rash, Rash erythematous, Rash macular, Rash maculo-papular, Rash papular, Rash pruritic, Rash pustular, Rash vesicular, Seborrhoeic keratosis, Skin discoloration, Skin exfoliation, Skin hypopigmentation, Skin irritation, Skin lesion, Stasis dermatitis.
Fatigue includes the following preferred terms: Asthenia, Fatigue, Malaise.
#
Edema includes the following preferred terms: Eye edema, Eyelid edema, Face edema, Edema, Edema peripheral, Orbital edema, Periorbital edema, Periorbital swelling, Peripheral swelling, Swelling, Swelling face, Swelling of eyelid, Swollen tongue.
Þ
Respiratory tract infection includes the following preferred terms: Nasopharyngitis, Respiratory tract congestion, Respiratory tract infection, Respiratory tract infection viral, Upper respiratory tract infection.
ß
Hypertension* includes the preferred terms: Blood pressure systolic increased, Hypertension, Hypertensive crisis, Hypertensive heart disease, Retinopathy hypertensive.
Gastrointestinal disordersDiarrhea759401
Abdominal pain392271
Nausea370420
Vomiting211200
Constipation13060
Hepatobiliary disordersHepatic dysfunction4527154
Skin and subcutaneous tissue disordersRash§402302
Pruritus11<140
General disorders and administration-site conditionsFatigue33130<1
Pyrexia171110
Edema#150462
Infections and infestationsRespiratory tract infectionÞ27125<1
Nervous system disordersHeadache221151
Musculoskeletal and connective tissue disordersArthralgia18118<1
Back pain12<19<1
Respiratory, thoracic, and mediastinal disordersCough110100
Dyspnea11161
Metabolism and nutrition disordersDecreased appetite11<160
Vascular disorders Hypertensionß105115

In the randomized study in patients with newly-diagnosed CP CML, one patient in the group treated with BOSULIF experienced a Grade 3 QTcF prolongation (>500 msec). Patients with uncontrolled or significant cardiovascular disease including QT interval prolongation were excluded by protocol.

Table 5 identifies the clinically relevant or severe Grade 3/4 laboratory test abnormalities for the Phase 3 newly-diagnosed CML safety population.

Table 5: Select Laboratory Abnormalities (>20%) That Worsened From Baseline in Patients with Newly-Diagnosed CML in Bosutinib 400 mg Study*
Bosutinib
N=268
%
Imatinib
N=265
%
All GradeGrade 3–4All GradeGrade 3–4
Abbreviations: ALT=alanine aminotransferase; AST=aspartate aminotransferase; CML=chronic myelogenous leukemia; SGPT=serum glutamic-pyruvic transaminase; SGOT=serum glutamic-oxaloacetic transaminase; N/n=number of patients; ULN=upper limit of normal.
Graded using CTCAE v 4.03
*
Based on a Minimum of 57 Months of Follow-up.
Hematology Parameters
Platelet Count decreased6814606
Absolute Neutrophil Count decreased4296520
Hemoglobin decreased899907
White Blood Cell Count decreased506708
Lymphocyte Count decreased84128214
Biochemistry Parameters
SGPT/ALT increased6826283
SGOT/AST increased5613293.4
Lipase increased5319358
Phosphorus decreased5496921
Amylase increased323.4182.3
Alkaline Phosphatase increased410430.4
Calcium decreased551.5571.1
Glucose increased573653.4
Creatine Kinase increased363655
Creatinine increased941.1980.8

Adverse Reactions in Patients With Imatinib-Resistant or -Intolerant Ph+ CP, AP, and BP CML

The single-arm clinical trial enrolled patients with Ph+ CP, AP, or BP CML and with resistance or intolerance to prior therapy [see Clinical Studies (14.2)]. The safety population (received at least 1 dose of BOSULIF) included 546 CML patients:

  • two hundred eighty-four (284) patients with CP CML previously treated with imatinib only who had a median duration of BOSULIF treatment of 26 months (range: 0.2 to 155 months), and a median dose intensity of 437 mg/day.
  • one hundred nineteen (119) patients with CP CML previously treated with both imatinib and at least 1 additional tyrosine kinase inhibitor (TKI) who had a median duration of BOSULIF treatment of 9 months (range: 0.2 to 148 months) and a median dose intensity of 427 mg/day.
  • one hundred forty-three (143) patients with advanced phase (AdvP) CML including 79 patients with AP CML and 64 patients with BP CML. In the patients with AP CML and BP CML, the median duration of BOSULIF treatment was 10 months (range: 0.1 to 140 months) and 3 months (range: 0.03 to 71 months), respectively. The median dose intensity was 406 mg/day, and 456 mg/day, in the AP CML and BP CML cohorts, respectively.

Serious adverse reactions occurred in 30% of patients in the safety population of the single-arm trial in patients with CML (N=546) who were resistant or intolerant to prior therapy. Serious adverse reactions reported in >2% of patients included pneumonia (7%), pleural effusion (6%), pyrexia (3.7%), coronary artery disease (3.5%), dyspnea (2.6%), rash (2.2%), thrombocytopenia (2%), abdominal pain (2%), and diarrhea (2%).

Fatal adverse reactions occurred in 12 patients (2.2%) due to coronary artery disease (0.9%), pneumonia (0.4%), respiratory failure (0.4%), gastrointestinal hemorrhage (0.2%), acute kidney injury (0.2%), and acute pulmonary edema (0.2%).

Permanent discontinuation of bosutinib due to an adverse reaction occurred in 22% of patients with CML who were resistant or intolerant to prior therapy. Adverse reactions which resulted in permanent discontinuation in >2% of patients included thrombocytopenia (6%), hepatic dysfunction (3.3%), and neutropenia (2%).

Dose modifications (dose interruption or reductions) of bosutinib due to an adverse reaction occurred in 66% of patients with CML who were resistant or intolerant to prior therapy. Adverse reactions which required dose interruptions or reductions in >5% of patients included thrombocytopenia (24%), diarrhea (14%), rash (13%), hepatic dysfunction (10%), neutropenia (9%), pleural effusion (8%), vomiting (7%), anemia (6%), and abdominal pain (6%).

The most common adverse reactions, in ≥20% of patients in the safety population of the single-arm trial in patients with CML (N=546) who were resistant or intolerant to prior therapy were diarrhea (83%), nausea (47%), rash (46%), abdominal pain (45%), vomiting (39%), fatigue (33%), pyrexia (28%), hepatic dysfunction (27%), respiratory tract infection (24%), cough (23%), and headache (21%).

The most common laboratory abnormalities that worsened from baseline in ≥20% were creatinine increased (93%), hemoglobin decreased (91%), lymphocyte decreased (80%), platelets decreased (69%), absolute neutrophil count (54%), ALT increased (53%), calcium decreased (53%), white blood cell count decreased (52%), urate increased (48%), AST increased (47%), phosphorus decreased (39%), alkaline phosphatase increased (39%), lipase increased (28%), magnesium increased (25%), potassium decreased (24%), potassium increased (23%). See Table 7 for Grade 3/4 laboratory abnormalities.

Table 6 identifies adverse reactions greater than or equal to 10% for All Grades and Grades 3 or 4 for the Phase 1/2 CML safety population based on long-term follow-up.

Table 6: Adverse Reactions (10% or Greater) in Patients With CML Who Were Resistant or Intolerant to Prior Therapy in Single-Arm Trial*
CP CML
(N=403)
AdvP CML
(N=143)
System Organ ClassPreferred TermAll Grades
%
Grade 3/4
%
All Grades
%
Grade 3/4
%
ADR Definition
*
Based on a Minimum of 105 Months of Follow-up.
Adverse drug reactions are based on all-causality treatment-emergent adverse events.
The commonality stratification is based on 'All Grades' under Total column.
'Grade 3', 'Grade 4' columns indicate maximum toxicity.
Abdominal pain includes the following preferred terms: Abdominal discomfort, Abdominal pain, Abdominal pain lower, Abdominal pain upper, Abdominal tenderness, Dyspepsia, Epigastric discomfort, Gastrointestinal pain, Hepatic pain.
Rash includes the following preferred terms: Acarodermatitis, Acne, Angular cheilitis, Blister, Dermatitis, Dermatitis acneiform, Dermatitis psoriasiform, Drug eruption, Eczema, Eczema asteatotic, Erythema, Erythema annulare, Exfoliative rash, Lichenoid keratosis, Palmar erythema, Photosensitivity reaction, Pigmentation disorder, Psoriasis, Pyoderma gangrenosum, Pyogenic granuloma, Rash, Rash erythematous, Rash generalised, Rash macular, Rash maculo-papular, Rash pruritic, Rash pustular, Seborrhoeic dermatitis, Seborrhoeic keratosis, Skin depigmentation, Skin discoloration, Skin disorder, Skin exfoliation, Skin hyperpigmentation, Skin hypopigmentation, Skin irritation, Skin lesion, Skin plaque, Skin toxicity, Stasis dermatitis.
§
Edema includes the following preferred terms: Eye edema, Eyelid edema, Face edema, Generalized edema, Localized edema, Edema, Edema peripheral, Penile edema, Periorbital edema, Periorbital swelling, Peripheral swelling, Scrotal edema, Scrotal swelling, Swelling, Swelling face, Swelling of eyelid, Testicular edema, Tongue edema.
Chest pain includes the following preferred terms: Chest discomfort, Chest pain.
#
Hepatic dysfunction includes the following preferred terms: Alanine aminotransferase increased, Aspartate aminotransferase increased, Bilirubin conjugated increased, Blood alkaline phosphatase increased, Blood bilirubin increased, Blood bilirubin unconjugated increased, Gamma-glutamyltransferase increased, Hepatic enzyme increased, Hepatic function abnormal, Hepatic steatosis, Hepatitis toxic, Hepatomegaly, Hepatotoxicity, Hyperbilirubinemia, Liver disorder, Liver function test abnormal, Liver function test increased, Transaminases increased.
Þ
Respiratory tract infection includes the following preferred terms: Nasopharyngitis, Respiratory tract congestion, Respiratory tract infection, Respiratory tract infection viral, Upper respiratory tract infection, Viral upper respiratory tract infection.
ß
Influenza includes the following preferred terms: H1N1 influenza, Influenza.
à
Pneumonia includes the following preferred terms: Atypical pneumonia, Lower respiratory tract congestion, Lower respiratory tract infection, Pneumonia, Pneumonia aspiration, Pneumonia bacterial, Pneumonia fungal, Pneumonia necrotising, Pneumonia streptococcal.
è
Hypertension* includes the following preferred terms: Blood pressure increased, Blood pressure systolic increased, Essential hypertension, Hypertension, Hypertensive crisis, Retinopathy hypertensive.
* ADR identified post-marketing.
Gastrointestinal disordersDiarrhea8510764
Abdominal pain492367
Nausea471482
Vomiting383433
Constipation15<1171
Skin and subcutaneous tissue disordersRash489425
Pruritus12170
General disorders and administration-site conditionsFatigue353276
Pyrexia251373
Edema§19<1171
Chest pain81121
Hepatobiliary disordersHepatic dysfunction#29112110
Infections and infestationsRespiratory tract infectionÞ27 <1170
Influenzaß11130
Pneumoniaà1041812
Respiratory, thoracic, and mediastinal disordersCough240220
Pleural effusion14494
Dyspnea122206
Nervous system disordersHeadache211184
Dizziness110141
Musculoskeletal and connective tissue disordersArthralgia191150
Back pain14181
Metabolism and nutrition disordersDecreased appetite141140
Vascular disorders Hypertensionè11383

In the single-arm study in patients with CML who were resistant or intolerant to prior therapy, 2 patients (0.4%) experienced QTcF interval of greater than 500 milliseconds. Patients with uncontrolled or significant cardiovascular disease including QT interval prolongation were excluded by protocol.

Table 7 identifies the clinically relevant or severe Grade 3/4 laboratory test abnormalities for the safety population of the study in patients with CML who were resistant or intolerant to prior therapy based on long-term follow-up.

Table 7: Number (%) of Patients With Clinically Relevant All Grade or Grade 3/4 Laboratory Test Abnormalities in the Safety Population of the Study of Patients With CML Who Were Resistant or Intolerant to Prior Therapy*
CP CML
N=403
%
AdvP CML
N=143
%
All gradeGrade 3/4All gradeGrade 3/4
Abbreviations: AdvP=advanced phase; ALT=alanine aminotransferase; AST=aspartate aminotransferase; CML=chronic myelogenous leukemia; CP=chronic phase; N/n=number of patients; SGPT=serum glutamate-pyruvate transaminase; SGOT=serum glutamate-oxaloacetate aminotransferase; ULN=upper limit of normal.
*
Based on a Minimum of 105 Months of Follow-up.
Hematology Parameters
  Platelet Count decreased66268057
  Absolute Neutrophil Count decreased50166639
  Hemoglobin decreased89139738
  Lymphocyte decreased79148221
  White Blood Cell Count decreased5175727
Biochemistry Parameters
  SGPT/ALT increased5811396
  SGOT/AST increased505373.5
  Lipase increased3212196
  Phosphorus decreased418337
  Total Bilirubin increased160.7222.8
  Creatinine increased953871.4
  Alkaline Phosphatase increased390391.4
  Glucose increased422.7396
  Sodium increased230.5110
  Sodium decreased182.2276
  Calcium decreased554.7453.5
  Urate increased496436
  Magnesium increased277184.9
  Potassium decreased221.7294.9
  Potassium increased252.7192.1

Additional Adverse Reactions From Multiple Clinical Trials

The following adverse reactions were reported in patients in clinical trials with BOSULIF (less than 10% of BOSULIF-treated patients). They represent an evaluation of the adverse reaction data from all 1372 patients with leukemia who received at least 1 dose of single-agent BOSULIF. These adverse reactions are presented by system organ class and are ranked by frequency. These adverse reactions are included based on clinical relevance and ranked in order of decreasing seriousness within each category.

Blood and Lymphatic System Disorders0.1% and less than 1% - Febrile neutropenia

Cardiac Disorders: 1% and less than 10% - Pericardial effusion; 0.1% and less than 1% - Pericarditis

Ear and Labyrinth Disorders: 1% and less than 10% - Tinnitus

Endocrine Disorders: 1% and less than 10% - Hypothyroidism; 0.1% and less than 1% - Hyperthyroidism

Gastrointestinal Disorders: 1% and less than 10% - Gastritis, Pancreatitis (includes Edematous pancreatitis, Pancreatic enzymes increased, Pancreatitis, Pancreatitis acute, Pancreatitis chronic), Gastrointestinal hemorrhage (includes Anal hemorrhage, Gastric hemorrhage, Gastrointestinal hemorrhage, Intestinal hemorrhage, Lower gastrointestinal hemorrhage, Rectal hemorrhage, Upper gastrointestinal hemorrhage)

General Disorders and Administrative Site Conditions: 1% and less than 10% - Pain

Immune System Disorders: 1% and less than 10% - Drug hypersensitivity; 0.1% and less than 1% - Anaphylactic shock

Infections and Infestations: 1% and less than 10% - Bronchitis

Investigations: 1% and less than 10% - Electrocardiogram QT prolonged (includes Electrocardiogram QT prolonged, Long QT syndrome)

Metabolism and Nutrition Disorders: 1% and less than 10% - Dehydration

Musculoskeletal and Connective Tissue Disorders: 1% and less than 10% - Myalgia

Nervous System Disorders: 1% and less than 10% - Dysgeusia

Renal and Urinary Disorders: 1% and less than 10% - Acute kidney injury, Renal impairment, Renal failure

Respiratory, Thoracic and Mediastinal Disorders: 1% and less than 10% - Pulmonary hypertension (includes Pulmonary hypertension, Pulmonary arterial hypertension, Pulmonary arterial pressure increased); 0.1% and less than 1% - Acute pulmonary edema (includes Acute pulmonary edema, Pulmonary edema), Respiratory failure

Skin and Subcutaneous Disorders: 0.1% and less than 1% - Erythema multiforme

6.2 Postmarketing Experience

The following additional adverse reactions have been identified during post-approval use of BOSULIF. Because these reactions are reported voluntarily from a population of uncertain size, it is not always possible to reliably estimate their frequency or establish a causal relationship to drug exposure.

Blood and Lymphatic System Disorders: Thrombotic microangiopathy

Skin and Subcutaneous Tissue Disorders: Stevens-Johnson syndrome

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