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. Adults In clinical trials with MultiHance, a total of 4967 adult subjects (137 healthy volunteers and 4830 patients) received MultiHance at doses ranging from 0.005 to 0.4 mmol/kg.
There were 2838 (57%) men and 2129 (43%) women with a mean age of 56.5 years (range 18 to 93 years). A total of 4403 (89%) subjects were Caucasian, 134 (3%) Black, 275 (6%) Asian, 40 (1%) Hispanic, 70 (1%) in other racial groups, and for 45 (1%) subjects, race was not reported. The most commonly reported adverse reactions in adult subjects who received MultiHance were nausea (1.3%) and headache (1.2%). Most adverse reactions were mild to moderate in intensity.
One subject experienced a serious anaphylactoid reaction with laryngeal spasm and dyspnea [ see Warnings and Precautions (5.3) ]. Serious adverse reactions consisting of convulsions, pulmonary edema, acute necrotizing pancreatitis, and anaphylactoid reactions were reported in 0.1% of subjects in clinical trials. Adverse reactions that occurred in at least 0.5% of 4967 adult subjects who received MultiHance are listed below (Table 2), in decreasing order of occurrence within each system.
TABLE 2: ADVERSE REACTIONS REPORTED IN ≥ 0.5% OF ADULT SUBJECTS WHO RECEIVED MULTIHANCE IN CLINICAL TRIALS Number of subjects dosed 4967 Number of subjects with any adverse reaction 517 (10.4%) Gastrointestinal Disorders Nausea 67 (1.3%) General Disorders and Administration Site Disorders Injection Site Reaction Feeling Hot 54 (1.1%) 49 (1.0%) Nervous System Disorders Headache Dysgeusia Paresthesia Dizziness 60 (1.2%) 33 (0.7%) 24 (0.5%) 24 (0.5%) The following adverse reactions occurred in less than 0.5% of the 4967 adult subjects who received MultiHance.
Serious adverse reactions described above are not repeated below. Blood and Lymphatic System Disorders: Basophilia; Cardiac Disorders: Atrioventricular block first degree; Eye Disorders: Eye pruritus, eye swelling, ocular hyperemia, visual disturbance; Gastrointestinal Disorders: Abdominal pain or discomfort, diarrhea, dry mouth, lip swelling, paresthesia oral, tongue edema, vomiting; General Disorders and Administration Site Conditions: Chest pain or discomfort, chills, malaise; Immune System Disorders: Hypersensitivity; Investigations: Nonspecific changes in laboratory tests (including hematology, blood chemistry, liver enzymes and urinalysis), blood pressure and electrocardiogram parameters (including PR, QRS and QT intervals and ST-T segment changes).
Musculoskeletal and Connective Tissue Disorders: Myalgia; Nervous System Disorders: Parosmia, tremor; Respiratory, Thoracic and Mediastinal Disorders: Dyspnea, laryngospasm, nasal congestion, sneezing, wheezing; Skin and Subcutaneous Tissue Disorders: Hyperhidrosis, pruritus, rash, swelling face, urticaria. Pediatric Patients In clinical trials of MultiHance in MRI of the CNS, 307 pediatric subjects received MultiHance at a dose of 0.1 mmol/kg.
A total of 160 (52%) subjects were male and the overall mean age was 6.0 years (range, 2 days to 17 years). A total of 211 (69%) subjects were Caucasian, 24 (8%) Black, 15 (5%) Asian, 39 (13%), Hispanic, 2 (<1%) in other racial groups, and for 16 (5%), race was not reported. Adverse reactions were reported for 14 (4.6%) of the subjects. The frequency and the nature of the adverse reactions were similar to those seen in the adult patients.
The most commonly reported adverse reactions were vomiting (1.0%), pyrexia (0.7%), and hyperhidrosis (0.7%). No subject died during study participation.
6.2Postmarketing Experience
The following adverse reactions have been identified during post approval use of MultiHance or other GBCAs. 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. Gastrointestinal Disorders: Acute pancreatitis with onset within 48 hours after GBCA administration. Immune System Disorders: Anaphylactic, anaphylactoid and hypersensitivity reactions manifested with various degrees of severity up to anaphylactic shock, loss of consciousness and death.
The reactions generally involved signs or symptoms of respiratory, cardiovascular, and/or mucocutaneous abnormalities. General Disorders and Administration Site Conditions: Extravasation of MultiHance may lead to injection site reactions, characterized by local pain or burning sensation, swelling, blistering, and necrosis [see Warnings and Precautions ( 5.5 )] . Adverse events with variable onset and duration have been reported after GBCA administration [see Warnings and Precautions ( 5.4 )] .
These include fatigue, asthenia, pain syndromes, and heterogeneous clusters of symptoms in the neurological, cutaneous, and musculoskeletal systems. Respiratory, Thoracic and Mediastinal Disorders: Acute respiratory distress syndrome, pulmonary edema Skin: Gadolinium associated plaques.
