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adverse reactions
6 ADVERSE REACTIONS The following adverse reactions are described in other labeling sections: o Anemia, Neutropenia and Thrombocytopenia [ see Warnings and Precautions (5.1) ] o Hepatotoxocity in Patients with Severe Pre-existing Hepatic Impairment [ see Warnings and Precautions (5.2) ] o Renal Toxicity [ see Warnings and Precautions (5.3) ] o Tumor Lysis Syndrome [ see Warnings and Precautions (5.4) ] o Embryo-Fetal Risk [ see Warnings and Precautions (5.5) ] Most Commonly Occurring Adverse Reactions (Subcutaneous or Intravenous Route) : nausea, anemia, thrombocytopenia, vomiting, pyrexia, leukopenia, diarrhea, injection site erythema, constipation, neutropenia, ecchymosis. The most common adverse reactions by intravenous route also included petechiae, rigors, weakness and hypokalemia. Adverse Reactions Most Frequently (>2%) Resulting in Clinical Intervention (Subcutaneous or Intravenous Route) : Discontinuation: leukopenia, thrombocytopenia, neutropenia. Dose Held: leukopenia, neutropenia, thrombocytopenia, pyrexia, pneumonia, febrile neutropenia. Dose Reduced: leukopenia, neutropenia, thrombocytopenia. Most common adverse reactions (>30%) by subcutaneous route are: nausea, anemia, thrombocytopenia, vomiting, pyrexia, leukopenia, diarrhea, injection site erythema, constipation, neutropenia and ecchymosis. Most common adverse reactions by intravenous route also included petechiae, rigors, weakness and hypokalemia ( 6.1 ). To report SUSPECTED ADVERSE REACTIONS, contact Hikma Pharmaceuticals USA Inc. at 1-877-845-0689 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch . 6.1 Adverse Reactions in Clinical Trials 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 below reflect exposure to Azacitidine for Injection in 443 MDS patients from 4 clinical studies. Study 1 was a supportive-care controlled trial (subcutaneous administration), Studies 2 and 3 were single arm studies (one with subcutaneous administration and one with intravenous administration), and Study 4 was an international randomized trial (subcutaneous administration) [ see Clinical Studies (14) ]. In Studies 1, 2 and 3, a total of 268 patients were exposed to Azacitidine for Injection, including 116 exposed for 6 cycles (approximately 6 months) or more and 60 exposed for greater than 12 cycles (approximately one year). Azacitidine for Injection was studied primarily in supportive-care controlled and uncontrolled trials (n=150 and n=118, respectively). The population in the subcutaneous studies (n=220) was 23 to 92 years old (mean 66.4 years), 68% male, and 94% white, and had MDS or AML. The population in the intravenous study (n=48) was 35 to 81 years old (mean 63.1 years), 65% male, and 100% white. Most patients received average daily doses between 50 and 100 mg/m 2 . In Study 4, a total of 175 patients with higher-risk MDS (primarily RAEB and RAEB-T subtypes) were exposed to Azacitidine for Injection. Of these patients, 119 were exposed for 6 or more cycles, and 63 for at least 12 cycles. The mean age of this population was 68.1 years (ranging from 42 to 83 years), 74% were male, and 99% were white. Most patients received daily Azacitidine for Injection doses of 75 mg/m 2 . Table 1 presents adverse reactions occurring in at least 5% of patients treated with Azacitidine for Injection (subcutaneous) in Studies 1 and 2. It is important to note that duration of exposure was longer for the Azacitidine for Injection-treated group than for the observation group: patients received Azacitidine for Injection for a mean of 11.4 months while mean time in the observation arm was 6.1 months. Table 1: Most Frequently Observed Adverse Reactions (≥5.0% in All Subcutaneous Azacitidine for Injection-Treated Patients; Studies 1 and 2) System Organ Class Preferred Term Multiple terms of the same preferred terms for a patient are only counted once within each treatment group. Number (%) of Patients All Azacitidine for Injection Includes adverse reactions from all patients exposed to Azacitidine for Injection, including patients after crossing over from observations. (N=220) Observation Includes adverse reactions from observation period only; excludes any adverse events after crossover to Azacitidine for Injection. (N=92) Blood and lymphatic system disorders Anemia 153 (70) 59 (64) Anemia aggravated 12 (6) 5 (5) Febrile neutropenia 36 (16) 4 (4) Leukopenia 106 (48) 27 (29) Neutropenia 71 (32) 10 (11) Thrombocytopenia 144 (66) 42 (46) Gastrointestinal disorders Abdominal tenderness 26 (12) 1 (1) Constipation 74 (34) 6 (7) Diarrhea 80 (36) 13 (14) Gingival bleeding 21 (10) 4 (4) Loose stools 12 (6) 0 Mouth hemorrhage 11 (5) 1 (1) Nausea 155 (71) 16 (17) Stomatitis 17 (8) 0 Vomiting 119 (54) 5 (5) General disorders and administration site conditions Chest pain 36 (16) 5 (5) Injection site bruising 31 (14) 0 Injection site erythema 77 (35) 0 Injection site granuloma 11 (5) 0 Injection site pain 50 (23) 0 Injection site pigmentation changes 11 (5) 0 Injection site pruritus 15 (7) 0 Injection site reaction 30 (14) 0 Injection site swelling 11 (5) 0 Lethargy 17 (8) 2 (2) Malaise 24 (11) 1 (1) Pyrexia 114 (52) 28 (30) Infections and infestations Nasopharyngitis 32 (15) 3 (3) Pneumonia 24 (11) 5 (5) Upper respiratory tract infection 28 (13) 4 (4) Injury, poisoning, and procedural complications Post procedural hemorrhage 13 (6) 1 (1) Metabolism and nutrition disorders Anorexia 45 (21) 6 (7) Musculoskeletal and connective tissue disorders Arthralgia 49 (22) 3 (3) Chest wall pain 11 (5) 0 Myalgia 35 (16) 2 (2) Nervous system disorders Dizziness 41 (19) 5 (5) Headache 48 (22) 10 (11) Psychiatric disorders Anxiety 29 (13) 3 (3) Insomnia 24 (11) 4 (4) Respiratory, thoracic and mediastinal disorders Dyspnea 64 (29) 11 (12) Skin and subcutaneous tissue disorders Dry skin 11 (5) 1 (1) Ecchymosis 67 (31) 14 (15) Erythema 37 (17) 4 (4) Rash 31 (14) 9 (10) Skin nodule 11 (5) 1 (1) Urticaria 13 (6) 1 (1) Vascular disorders Hematoma 19 (9) 0 Hypotension 15 (7) 2 (2) Petechiae 52 (24) 8 (9) Table 2 presents adverse reactions occurring in at least 5% of patients treated with Azacitidine for Injection in Study 4. Similar to Studies 1 and 2 described above, duration of exposure to treatment with Azacitidine for Injection was longer (mean 12.2 months) compared with best supportive care (mean 7.5 months). Table 2: Most Frequently Observed Adverse Reactions (≥5.0% in the Azacitidine for Injection-Treated Patients and the Percentage with NCI CTC Grade 3/4 Reactions; Study 4) Number (%) of Patients Any Grade Grade 3/4 System Organ Class Preferred Term Multiple reports of the same preferred term from a patient were only counted once within each treatment. Azacitidine for Injection (N=175) Best Supportive Care Only (N=102) Azacitidine for Injection (N=175) Best Supportive Care Only (N=102) Blood and lymphatic system disorders Anemia 90 (51) 45 (44) 24 (14) 9 (9) Febrile neutropenia 24 (14) 10 (10) 22 (13) 7 (7) Leukopenia 32 (18) 2 (2) 26 (15) 1 (1) Neutropenia 115 (66) 29 (28) 107 (61) 22 (22) Thrombocytopenia 122 (70) 35 (34) 102 (58) 29 (28) Gastrointestinal disorders Abdominal pain 22 (13) 7 (7) 7 (4) 0 Constipation 88 (50) 8 (8) 2 (1) 0 Dyspepsia 10 (6) 2 (2) 0 0 Nausea 84 (48) 12 (12) 3 (2) 0 Vomiting 47 (27) 7 (7) 0 0 General disorders and administration site conditions Fatigue 42 (24) 12 (12) 6 (3) 2 (2) Injection site bruising 9 (5) 0 0 0 Injection site erythema 75 (43) 0 0 0 Injection site hematoma 11 (6) 0 0 0 Injection site induration 9 (5) 0 0 0 Injection site pain 33 (19) 0 0 0 Injection site rash 10 (6) 0 0 0 Injection site reaction 51 (29) 0 1 (1) 0 Pyrexia 53 (30) 18 (18) 8 (5) 1 (1) Infections and infestations Rhinitis 10 (6) 1 (1) 0 0 Upper respiratory tract infection 16 (9) 4 (4) 3 (2) 0 Urinary tract infection 15 (9) 3 (3) 3 (2) 0 Investigations Weight decreased 14 (8) 0 1 (1) 0 Metabolism and nutrition disorders Hypokalemia 11 (6) 3 (3) 3 (2) 3 (3) Nervous system disorders Lethargy 13 (7) 2 (2) 0 1 (1) Psychiatric disorders Anxiety 9 (5) 1 (1) 0 0 Insomnia 15 (9) 3 (3) 0 0 Renal and urinary disorders Hematuria 11 (6) 2 (2) 4 (2) 1 (1) Respiratory, thoracic and mediastinal disorders Dyspnea 26 (15) 5 (5) 6 (3) 2 (2) Dyspnea exertional 9 (5) 1 (1) 0 0 Pharyngolaryngeal pain 11 (6) 3 (3) 0 0 Skin and subcutaneous tissue disorders Erythema 13 (7) 3 (3) 0 0 Petechiae 20 (11) 4 (4) 2 (1) 0 Pruritus 21 (12) 2 (2) 0 0 Rash 18 (10) 1 (1) 0 0 Vascular disorders Hypertension 15 (9) 4 (4) 2 (1) 2 (2) In Studies 1, 2 and 4 with subcutaneous administration of Azacitidine for Injection, adverse reactions of neutropenia, thrombocytopenia, anemia, nausea, vomiting, diarrhea, constipation, and injection site erythema/reaction tended to increase in incidence with higher doses of Azacitidine for Injection. Adverse reactions that tended to be more pronounced during the first 1 to 2 cycles of subcutaneous treatment compared with later cycles included thrombocytopenia, neutropenia, anemia, nausea, vomiting, injection site erythema/pain/bruising/reaction, constipation, petechiae, dizziness, anxiety, hypokalemia, and insomnia. There did not appear to be any adverse reactions that increased in frequency over the course of treatment. Overall, adverse reactions were qualitatively similar between the intravenous and subcutaneous studies. Adverse reactions that appeared to be specifically associated with the intravenous route of administration included infusion site reactions (e.g. erythema or pain) and catheter site reactions (e.g. infection, erythema, or hemorrhage). In clinical studies of either subcutaneous or intravenous Azacitidine for Injection, the following serious adverse reactions occurring at a rate of < 5% (and not described in Tables 1 or 2) were reported: Blood and lymphatic system disorders: agranulocytosis, bone marrow failure, pancytopenia splenomegaly. Cardiac disorders: atrial fibrillation, cardiac failure, cardiac failure congestive, cardiorespiratory arrest, congestive cardiomyopathy. Eye disorders: eye hemorrhage. Gastrointestinal disorders: diverticulitis, gastrointestinal hemorrhage, melena, perirectal abscess. General disorders and administration site conditions: catheter site hemorrhage, general physical health deterioration, systemic inflammatory response syndrome. Hepatobiliary disorders: cholecystitis. Immune system disorders: anaphylactic shock, hypersensitivity. Infections and infestations: abscess limb, bacterial infection, cellulitis, blastomycosis, injection site infection, Klebsiella sepsis, neutropenic sepsis, pharyngitis streptococcal, pneumonia Klebsiella, sepsis, septic shock, Staphylococcal bacteremia, Staphylococcal infection, toxoplasmosis. Metabolism and nutrition disorders: dehydration. Musculoskeletal and connective tissue disorders: bone pain aggravated, muscle weakness, neck pain. Neoplasms benign, malignant and unspecified: leukemia cutis. Nervous system disorders: cerebral hemorrhage, convulsions, intracranial hemorrhage. Renal and urinary disorders: loin pain, renal failure. Respiratory, thoracic and mediastinal disorders: hemoptysis, lung infiltration, pneumonitis, respiratory distress. Skin and subcutaneous tissue disorders: pyoderma gangrenosum, rash pruritic, skin induration. Surgical and medical procedures: cholecystectomy. Vascular disorders: orthostatic hypotension. 6.2 Postmarketing Experience The following adverse reactions have been identified during postmarketing use of Azacitidine for Injection. 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. Interstitial lung disease Tumor lysis syndrome Injection site necrosis Sweet’s syndrome (acute febrile neutrophilic dermatosis) Necrotizing fasciitis (including fatal cases) Differentiation syndrome