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adverse reactions
6 ADVERSE REACTIONS The following clinically significant adverse reactions are described below and elsewhere in the labeling: Agranulocytosis and Neutropenia [see Warnings and Precautions ( 5.1 )] Liver Enzyme Elevations [ see Warnings and Precautions ( 5.2 ) ] Zinc Deficiency [see Warnings and Precautions ( 5.3 )] The most common adverse reactions in patients with thalassemia (incidence ≥ 6%) are nausea, vomiting, abdominal pain, arthralgia, ALT increased and neutropenia. ( 6 ) The most common adverse reactions in patients with sickle cell disease or other anemias (incidence ≥6%) are pyrexia, abdominal pain, bone pain, headache, vomiting, pain in extremity, sickle cell anemia with crisis, back pain, ALT increased, AST increased, arthralgia, oropharyngeal pain, nasopharyngitis, neutrophil count decreased, cough and nausea. ( 6 ) To report SUSPECTED ADVERSE REACTIONS, contact Chiesi USA, Inc. at 1-888-661-9260 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch 6.1 Clinical Trial 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. FERRIPROX Tablets (twice a day) were evaluated in trials in healthy subjects. FERRIPROX Tablets (twice a day) contain deferiprone, the same active ingredient as FERRIPROX Tablets (deferiprone) (three times a day) and FERRIPROX Oral Solution (deferiprone). The following adverse reaction information represents the pooled data collected from single arm or active-controlled clinical trials with FERRIPROX Tablets (deferiprone) (three times a day) or FERRIPROX Oral Solution (deferiprone). Thalassemia Syndromes The safety of FERRIPROX was evaluated in the pooled clinical trial database [see Clinical Studies ( 14.1 )] . Patients received FERRIPROX Tablets (three times a day) or FERRIPROX Oral Solution . FERRIPROX was administered orally three times a day (total daily dose either 50, 75, or 99 mg/kg), N=642. Among 642 patients receiving FERRIPROX, 492 (76.6%) were exposed for 6 months or longer and 365 (56.9%) were exposed for greater than one year. The median age of patients who received FERRIPROX was 19 years (range 1, 77 years); 50.2% female; 71.2% White, 17.8% Asian, 9.2% Unknown, 1.2% Multi-racial and 0.6% Black. The most serious adverse reaction reported in clinical trials with FERRIPROX was agranulocytosis [see Warnings and Precautions ( 5.1 ) ] . The most common adverse reactions (≥6%) reported during clinical trials were nausea, vomiting, abdominal pain, arthralgia, alanine aminotransferase increased and neutropenia. The table below lists the adverse drug reactions that occurred in at least 1% of patients treated with FERRIPROX in clinical trials in patients with thalassemia syndromes. Table 5: Adverse reactions occurring in ≥ 1% of FERRIPROX-treated patients with thalassemia syndromes Body System (N=642) Adverse Reaction % Patients BLOOD AND LYMPHATIC SYSTEM DISORDERS Neutropenia * 7 Agranulocytosis † 1 GASTROINTESTINAL DISORDERS Nausea 13 Abdominal pain/discomfort 10 Vomiting 10 Diarrhea 3 Dyspepsia 2 INVESTIGATIONS Alanine aminotransferase increased 7 Weight increased 2 Aspartate aminotransferase increased 1 METABOLISM AND NUTRITION DISORDERS Increased appetite 4 Decreased appetite 1 MUSCULOSKELETAL AND CONNECTIVE TISSUE DISORDERS Arthralgia 10 Back pain 2 Pain in extremity 2 Arthropathy 1 NERVOUS SYSTEM DISORDERS Headache 2 * Neutropenia includes events of severe neutropenia (ANC ≥0.2 x 10 9 /L and <0.5 x 10 9 /L). †Agranulocytosis (ANC< 0.2 x 10 9 /L) Gastrointestinal symptoms such as nausea, vomiting, and abdominal pain were the most frequent adverse reactions reported by patients participating in clinical trials and led to the discontinuation of FERRIPROX therapy in 1.6% of patients. Chromaturia (reddish/brown discoloration of the urine) is a result of the excretion of iron in the urine. Sickle Cell Disease or Other Anemias The safety of FERRIPROX compared to deferoxamine was evaluated in LA38-0411 [see Clinical Studies ( 14.2 )] . Patients received FERRIPROX Tablets or FERRIPROX Oral Solution orally three times a day (total daily dose 75-99 mg/kg/day) n=152) or the control arm, deferoxamine, 20-40 mg/kg/day (children) or 40-50 mg/kg/day (adults), by subcutaneous infusion for 5 – 7 days per week, n=76. Among 152 patients receiving FERRIPROX, 120 (78.9%) were exposed for 6 months or longer and 17 (11.2%) were exposed for greater than one year. The median age of patients who received FERRIPROX was 15 years (range 3, 59 years); 54.6% male; 78.9% White, 15.1% Black and 5.9% Multi-racial. The most common adverse reactions (≥6%) reported during clinical trials in patients with SCD or other anemias were pyrexia, abdominal pain, bone pain, headache, vomiting, pain in extremity, sickle cell anemia with crisis, back pain, alanine aminotransferase (ALT) increased, aspartate aminotransferase (AST) increased, arthralgia, oropharyngeal pain, nasopharyngitis, neutrophil count decreased, cough and nausea. The table below lists the adverse reactions (irrespective of a causal assessment; adverse events) of interest that occurred in patients treated with FERRIPROX in clinical trials in subjects with sickle cell disease or other anemias. Table 6: Adverse reactions occurring in ≥5% of FERRIPROX-treated patients with sickle cell disease or other anemias Body System Adverse Reaction FERRIPROX (N=152) % Patients DEFEROXAMINE (N=76) % Patients BLOOD AND LYMPHATIC SYSTEM DISORDERS Sickle cell anemia with crisis 17 13 GASTROINTESTINAL DISORDERS Abdominal pain* 26 13 Vomiting 19 11 Nausea 7 9 Diarrhea 5 8 GENERAL DISORDERS AND ADMINISTRATION SITE CONDITIONS Pyrexia 28 33 Pain 5 4 INFECTIONS AND INFESTATIONS Nasopharyngitis 9 12 Upper respiratory tract infection 5 3 INVESTIGATIONS Alanine aminotransferase increased 12 0 Aspartate aminotransferase increased 11 0 Neutrophil count decreased 8 4 MUSCULOSKELETAL AND CONNECTIVE TISSUE DISORDERS Bone pain 25 34 Pain in extremity 18 15 Back pain 13 18 Arthralgia 10 8 NERVOUS SYSTEM DISORDERS Headache 20 13 RESPIRATORY, THORACIC AND MEDIASTINAL DISORDERS Oropharyngeal pain 10 15 Cough 8 15 *Grouped term Clinically relevant adverse reactions in <5% of patients include neutropenia and agranulocytosis. Pediatric Patients FERRIPROX has been studied in 86 pediatric patients with sickle cell disease or other anemias. Pediatric patients (<17 years) had an increase in the following adverse reactions as compared to adults: abdominal pain, neutrophil count decreased, bone pain and oropharyngeal pain. 6.2 Postmarketing Experience The following additional adverse reactions have been reported in patients receiving FERRIPROX. Because these reactions are reported voluntarily from a population of uncertain size, it is not always possible to reliably estimate their frequency or to establish a causal relationship to drug exposure. Blood and lymphatic system disorders: thrombocytosis, pancytopenia. Cardiac disorders: atrial fibrillation, cardiac failure. Congenital, familial and genetic disorders: hypospadias. Eye disorders: diplopia, papilledema, retinal toxicity. Gastrointestinal disorders: enterocolitis, rectal hemorrhage, gastric ulcer, pancreatitis, parotid gland enlargement. General disorders and administration site conditions: chills, edema peripheral, multi-organ failure. Hepatobiliary disorders: jaundice, hepatomegaly. Immune system disorders: anaphylactic shock, hypersensitivity. Infections and infestations: cryptococcal cutaneous infection, enteroviral encephalitis, pharyngitis, pneumonia, sepsis, furuncle, infectious hepatitis, rash pustular, subcutaneous abscess. Investigations: blood bilirubin increased, blood creatinine phosphokinase increased. Metabolism and nutrition disorders: metabolic acidosis, dehydration. Musculoskeletal and connective tissue disorders: myositis, chondropathy, trismus. Nervous system disorders: cerebellar syndrome, cerebral hemorrhage, convulsion, gait disturbance, intracranial pressure increased, psychomotor skills impaired, pyramidal tract syndrome, somnolence. Psychiatric disorders: bruxism, depression, obsessive-compulsive disorder. Renal disorders: glycosuria, hemoglobinuria. Respiratory, thoracic and mediastinal disorders: acute respiratory distress syndrome, epistaxis, hemoptysis, pulmonary embolism. Skin, subcutaneous tissue disorders: hyperhidrosis, periorbital edema, photosensitivity reaction, pruritis, urticaria, rash, Henoch-Schönlein purpura. Vascular disorders: hypotension, hypertension.