Sugammadex

1 INDICATIONS AND USAGE BRIDION ® is indicated for the reversal of neuromuscular blockade induced by rocuronium bromide and vecuronium bromide in adult and pediatric patients undergoing surgery. BRIDION is indicated for the reversal of neuromuscular blockade induced by rocuronium bromide and vecuronium bromide in adult and pediatric patients undergoing surgery. ( 1 )

2 DOSAGE AND ADMINISTRATION Dosing is based on actual body weight ( 2.1 ) Monitor for twitch responses to determine the timing and dose for BRIDION administration. ( 2.1 ) Administer as a single bolus injection. ( 2.1 ) For rocuronium and vecuronium: 4 mg/kg is recommended if spontaneous recovery of the twitch response has reached 1 to 2 post-tetanic counts (PTC) and there are no twitch responses to train-of-four (TOF) stimulation. ( 2.2 ) 2 mg/kg is recommended if spontaneous recovery has reached the reappearance of the second twitch in response to TOF stimulation. ( 2.2 ) For rocuronium only: 16 mg/kg is recommended if there is a clinical need to reverse neuromuscular blockade soon (approximately 3 minutes) after administration of a single dose of 1.2 mg/kg of rocuronium. Immediate reversal in pediatric patients has not been studied. ( 2.2 ) 2.1 Important Dosing and Administration Information BRIDION dosing is based on actual body weight. BRIDION (sugammadex) injection, for intravenous use, should be administered by trained healthcare providers familiar with the use, actions, characteristics, and complications of neuromuscular blocking agents (NMBA) and neuromuscular block reversal agents. Doses and timing of BRIDION administration should be based on monitoring for twitch responses and the extent of spontaneous recovery that has occurred. Administer BRIDION intravenously as a single bolus injection. The bolus injection may be given over 10 seconds, into an existing intravenous line. BRIDION has only been administered as a single bolus injection in clinical trials. From the time of BRIDION administration until complete recovery of neuromuscular function, monitor the patient to assure adequate ventilation and maintenance of a patent airway. Satisfactory recovery should be determined through assessment of skeletal muscle tone and respiratory measurements in addition to the response to peripheral nerve stimulation. The recommended dose of BRIDION does not depend on the anesthetic regimen. Preparation of dilution for pediatric use: BRIDION 100 mg/mL may be diluted to a concentration of 10 mg/mL, using 0.9% sodium chloride injection, USP, to increase the accuracy of dosing in the pediatric population. To prepare the required dose, aseptically transfer all the contents of the 2 mL vial of BRIDION 2-mL single-dose vials containing 200 mg sugammadex (100 mg/mL) to a bottle (or intravenous bag) containing 18 mL of 0.9% sodium chloride injection, to achieve a final concentration of 10 mg/mL sugammadex. The diluted solution should be used immediately. BRIDION injection is a single-dose sterile solution without preservatives. Discard any unused portion from the vial. 2.2 Recommended Dosing BRIDION can be used to reverse different levels of rocuronium- or vecuronium-induced neuromuscular blockade. For rocuronium and vecuronium: A dose of 4 mg/kg BRIDION is recommended if spontaneous recovery of the twitch response has reached 1 to 2 post-tetanic counts (PTC) and there are no twitch responses to train-of-four (TOF) stimulation following rocuronium- or vecuronium-induced neuromuscular blockade [see Warnings and Precautions (5.8) ]. A dose of 2 mg/kg BRIDION is recommended if spontaneous recovery has reached the reappearance of the second twitch (T 2 ) in response to TOF stimulation following rocuronium- or vecuronium-induced neuromuscular blockade [see Warnings and Precautions (5.8) ]. For rocuronium only: A dose of 16 mg/kg BRIDION is recommended if there is a clinical need to reverse neuromuscular blockade soon (approximately 3 minutes) after administration of a single dose of 1.2 mg/kg of rocuronium. The efficacy of the 16 mg/kg dose of BRIDION following administration of vecuronium has not been studied. Immediate reversal in pediatric patients has not been studied [see Clinical Studies (14.1) ]. 2.3 Drug Compatibility May inject BRIDION into the intravenous line of a running infusion with the following intravenous solutions: 0.9% sodium chloride 5% dextrose 0.45% sodium chloride and 2.5% dextrose 5% dextrose in 0.9% sodium chloride isolyte P with 5% dextrose Ringer's lactate solution Ringer's solution Ensure the infusion line is adequately flushed (e.g., with 0.9% sodium chloride) between administration of BRIDION and other drugs. Do not mix BRIDION with other products except those listed above. BRIDION is physically incompatible with verapamil, ondansetron, and ranitidine. Visually inspect parenteral drug products for particulate matter and discoloration prior to administration, whenever the solution and container permit.

6 ADVERSE REACTIONS The following serious adverse reactions are described elsewhere in the labeling: Anaphylaxis and Hypersensitivity [see Contraindications (4) , Warnings and Precautions (5.1) ] Marked Bradycardia [see Warnings and Precautions (5.2) ] Most common adverse reactions (reported in ≥10% of adult patients at a 2, 4, or 16 mg/kg BRIDION dose and higher than the placebo rate): vomiting, pain, nausea, hypotension, and headache. ( 6.1 ) Most common adverse reactions (reported in ≥10% of pediatric patients 2 to <17 years of age at BRIDION doses of 2 or 4 mg/kg) were pain, vomiting, and nausea. ( 6.1 ) Most common adverse reaction (reported in ≥10% of pediatric patients from birth to <2 years of age at BRIDION doses of 2 or 4 mg/kg) was procedural pain. ( 6.1 ) To report SUSPECTED ADVERSE REACTIONS, contact Merck Sharp & Dohme LLC at 1-877-888-4231 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch . 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. Adult Patients The data described below reflect 2914 subjects exposed to 2, 4, or 16 mg/kg BRIDION and 544 to placebo in pooled Phase 1-3 studies. The population was 18 to 92 years old, 47% male and 53% female, 34% ASA (American Society of Anesthesiologists) Class 1, 51% ASA Class 2, and 14% ASA Class 3, and 82% Caucasian. Most subjects received a single dose of BRIDION 2 mg/kg or 4 mg/kg. Adverse reactions reported in ≥10% of patients at a 2, 4, or 16 mg/kg BRIDION dose with a rate higher than the placebo rate are: vomiting, pain, nausea, hypotension, and headache. All adverse reactions occurring in ≥2% of subjects treated with BRIDION and more often than placebo for adult subjects who received anesthesia and/or neuromuscular blocking agent in pooled Phase 1 to 3 studies are presented in Table 2. Table 2: Percent of Subject Exposures in Pooled Phase 1 to 3 Studies with Adverse Reactions Incidence ≥2% Sugammadex Placebo Body System Preferred Term 2 mg/kg (N=895) n (%) 4 mg/kg (N=1921) n (%) 16 mg/kg (N=98) n (%) (N=544) n (%) Injury, poisoning and procedural complications Incision site pain 58 (6) 106 (6) 4 (4) 6 (1) Procedural complication 13 (1) 27 (1) 8 (8) 3 (1) Airway complication of anesthesia 11 (1) 13 (1) 9 (9) 0 Anesthetic complication 8 (1) 14 (1) 9 (9) 1 (<1) Wound hemorrhage 5 (1) 38 (2) 0 8 (1) Recurrence of neuromuscular blockade 0 1 (<1) 2 (2) 0 Gastrointestinal disorders Nausea Combinations of preferred terms are as follows: Nausea includes preferred terms nausea and procedural nausea Vomiting includes preferred terms vomiting and procedural vomiting Abdominal pain includes preferred terms abdominal pain, abdominal pain upper, abdominal discomfort, abdominal pain lower, and epigastric discomfort Pain includes preferred terms pain and procedural pain Red blood cell count decreased includes preferred terms red blood cell count decreased, hemoglobin decreased, and hematocrit decreased Electrocardiogram QT interval abnormal includes preferred terms electrocardiogram QT interval abnormal and electrocardiogram QT interval prolonged Hypertension includes preferred terms hypertension, procedural hypertension, and blood pressure increased Hypotension includes preferred terms hypotension, procedural hypotension, and blood pressure decreased Tachycardia includes preferred terms tachycardia and heart rate increased Bradycardia includes preferred terms bradycardia and heart rate decreased 208 (23) 503 (26) 23 (23) 127 (23) Vomiting 98 (11) 236 (12) 15 (15) 57 (10) Abdominal pain 48 (5) 68 (4) 6 (6) 17 (3) Flatulence 17 (2) 51 (3) 1 (1) 10 (2) Dry mouth 9 (1) 5 (<1) 2 (2) 0 General disorders and administration site conditions Pain 434 (48) 993 (52) 35 (36) 207 (38) Pyrexia 77 (9) 109 (6) 5 (5) 17 (3) Chills 30 (3) 61 (3) 7 (7) 27 (5) Nervous system disorders Headache 61 (7) 99 (5) 10 (10) 42 (8) Dizziness 44 (5) 67 (3) 6 (6) 13 (2) Hypoesthesia 12 (1) 24 (1) 3 (3) 9 (2) Respiratory, thoracic and mediastinal disorders Oropharyngeal pain 42 (5) 66 (3) 5 (5) 27 (5) Cough 13 (1) 49 (3) 8 (8) 11 (2) Musculoskeletal and connective tissue disorders Pain in extremity 13 (1) 35 (2) 6 (6) 15 (3) Musculoskeletal pain 16 (2) 33 (2) 1 (1) 6 (1) Myalgia 5 (1) 17 (1) 2 (2) 3 (1) Psychiatric disorders Insomnia 20 (2) 103 (5) 5 (5) 22 (4) Anxiety 14 (2) 19 (1) 3 (3) 1 (<1) Restlessness 3 (<1) 17 (1) 2 (2) 2 (<1) Depression 2 (<1) 5 (<1) 2 (2) 0 Investigations Red blood cell count decreased 13 (1) 34 (2) 1 (1) 2 (<1) Electrocardiogram QT interval abnormal 13 (1) 7 (<1) 6 (6) 4 (1) Blood creatine phosphokinase increased 9 (1) 14 (1) 2 (2) 1 (<1) Vascular disorders Hypertension 48 (5) 96 (5) 9 (9) 38 (7) Hypotension 33 (4) 102 (5) 13 (13) 20 (4) Skin and subcutaneous tissue disorders Pruritus 17 (2) 50 (3) 2 (2) 9 (2) Erythema 5 (1) 31 (2) 0 6 (1) Metabolism and nutrition disorders Hypocalcemia 15 (2) 12 (1) 0 4 (1) Cardiac disorders Tachycardia 17 (2) 29 (2) 5 (5) 4 (1) Bradycardia 9 (1) 21 (1) 5 (5) 6 (1) Surgical and medical procedures Hysterectomy 0 0 2 (2) 0 Pediatric Patients 2 to <17 years of age The safety of BRIDION has been assessed in a randomized, active-controlled study of pediatric patients 2 to <17 years of age, with 242 receiving treatment with BRIDION. Adverse events occurring in ≥5% of pediatric patients are presented in Table 3. The safety profile was generally consistent with that observed in adults. Table 3: Pediatric Patients (2 to <17 years of age) with Adverse Events Incidence ≥5% in One or More Treatment Groups Up to 7 Days Post-Treatment Sugammadex 2 mg/kg Sugammadex 4 mg/kg n (%) n (%) Subjects in population 51 191 with one or more specific adverse events 40 (78) 143 (75) with no specific adverse events 11 (22) 48 (25) Cardiac disorders 5 (10) 16 (8) Bradycardia Combines preferred terms of bradycardia and sinus bradycardia Every subject is counted a single time for each applicable row and column. A system organ class or specific adverse event appears in this table only if its incidence in one or more of the columns meets the incidence criterion in the table title, after rounding. 5 (10) 13 (7) Eye disorders 3 (6) 1 (1) Gastrointestinal disorders 8 (16) 35 (18) Nausea 1 (2) 12 (6) Vomiting 4 (8) 20 (10) Injury, poisoning and procedural complications 34 (67) 121 (63) Incision site pain 3 (6) 6 (3) Procedural nausea 4 (8) 9 (5) Procedural pain 30 (59) 111 (58) Procedural vomiting 3 (6) 5 (3) Birth to <2 years of age The safety of BRIDION has been assessed in a randomized, double-blinded, active comparator-controlled study of pediatric patients from birth to <2 years of age, with 107 receiving treatment with BRIDION. Adverse events occurring in ≥5% of pediatric patients are presented in Table 4. The safety profile was generally consistent with that observed in pediatric patients from 2 to <17 years of age and adults. Table 4: Pediatric Participants (Birth to <2 Years) with Specific Adverse Events Incidence ≥ 5% in One or More Treatment Groups Up to 7 Days Post-Treatment Sugammadex 2 mg/kg Sugammadex 4 mg/kg n (%) n (%) Every participant is counted a single time for each applicable row and column. A system organ class or specific adverse event appears in this table only if its incidence in one or more of the columns meets the incidence criterion in the table title, after rounding. Participants in population 44 63 with one or more specific adverse events 30 (68.2) 43 (68.3) with no specific adverse events 14 (31.8) 20 (31.7) Cardiac disorders 3 (6.8) 0 (0.0) Gastrointestinal disorders 6 (13.6) 4 (6.3) Vomiting 4 (9.1) 1 (1.6) General disorders and administration site conditions 5 (11.4) 6 (9.5) Pyrexia 3 (6.8) 3 (4.8) Infections and infestations 3 (6.8) 0 (0.0) Injury, poisoning and procedural complications 19 (43.2) 35 (55.6) Procedural pain 18 (40.9) 34 (54.0) Procedural vomiting 3 (6.8) 1 (1.6) Metabolism and nutrition disorders 3 (6.8) 2 (3.2) Respiratory, thoracic and mediastinal disorders 5 (11.4) 3 (4.8) Anaphylaxis and Hypersensitivity Hypersensitivity reactions, including anaphylaxis, have occurred in both premarketing clinical trials and in post-marketing spontaneous reports. In a dedicated hypersensitivity study in healthy volunteers, the frequency of anaphylaxis was 0.3% [see Warnings and Precautions (5.1) ] . These reactions varied from isolated skin reactions to serious systemic reactions (i.e., anaphylaxis, anaphylactic shock) and have occurred in patients with no prior exposure to sugammadex. Symptoms associated with these reactions can include: flushing, urticaria, erythematous rash, (severe) hypotension, tachycardia, swelling of tongue, swelling of pharynx, bronchospasm and pulmonary obstructive events. Severe hypersensitivity reactions can be fatal. A randomized, double-blind study examined the incidence of drug hypersensitivity reactions in healthy volunteers given up to 3 doses of placebo (N=76), sugammadex 4 mg/kg (N=151) or sugammadex 16 mg/kg (N=148). Reports of suspected hypersensitivity were adjudicated by a blinded committee. The incidence of adjudicated hypersensitivity was 1%, 7% and 9% in the placebo, sugammadex 4 mg/kg and sugammadex 16 mg/kg groups, respectively. There were no reports of anaphylaxis after placebo or sugammadex 4 mg/kg. There was a single case of adjudicated anaphylaxis after the first dose of sugammadex 16 mg/kg. The frequency of anaphylaxis for the 299 healthy volunteers treated with intravenous sugammadex was 0.3%. There was no evidence of increased frequency or severity of hypersensitivity with repeat dosing. In a previous study of similar design, there were three adjudicated cases of anaphylaxis, all after sugammadex 16 mg/kg (incidence 1% in the 298 healthy volunteers treated with sugammadex). Recurrence of Neuromuscular Blockade In clinical studies with subjects treated with rocuronium or vecuronium, where BRIDION was administered using a dose labeled for the depth of neuromuscular blockade (N=2022), an incidence of <1% was observed for recurrence of neuromuscular blockade as based on neuromuscular monitoring or clinical evidence [see Warnings and Precautions (5.8) ] . Bronchospasm In one dedicated clinical trial and in post-marketing data, in patients with a history of pulmonary complications [see Use in Specific Populations (8.9) ] , bronchospasm was reported as a possibly related adverse event. 6.2 Post-Marketing Experience The following adverse reactions have been identified during post-approval use of BRIDION. 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. Cardiac Disorders: Cases of marked bradycardia and bradycardia with cardiac arrest have been observed within minutes after administration of sugammadex [see Warnings and Precautions (5.2) ] . Other cardiac rhythm abnormalities have included atrial fibrillation, atrioventricular block, cardiac/cardiorespiratory arrest, electrocardiographic (ECG) ST segment changes, supraventricular tachycardia/extrasystoles, tachycardia, ventricular fibrillation, and ventricular tachycardia. Anaphylaxis associated with ECG ST segment changes (elevation or depression) consistent with myocardial ischemia or coronary spasm has also been reported. General Disorders and Administration Site Conditions: Cases of BRIDION not having the intended effect. Immune System Disorders: Hypersensitivity events including anaphylactic shock, anaphylactic reaction, anaphylactoid reaction, and Type 1 hypersensitivity have been reported [see Warnings and Precautions (5.1) ] . Respiratory, Thoracic, and Mediastinal Disorders: Events of laryngospasm, dyspnea, wheezing, pulmonary edema, and respiratory arrest have been reported.

12.3 Pharmacokinetics The sugammadex pharmacokinetic parameters were calculated from the total sum of non-complex-bound and complex-bound concentrations of sugammadex. Pharmacokinetic parameters as clearance and volume of distribution are assumed to be the same for non-complex-bound and complex-bound sugammadex in anesthetized patients. Distribution The observed steady-state volume of distribution of sugammadex is approximately 11 to 14 liters in adult patients with normal renal function (based on conventional, non-compartmental pharmacokinetic analysis). Neither sugammadex nor the complex of sugammadex and rocuronium binds to plasma proteins or erythrocytes, as was shown in vitro using male human plasma and whole blood. Sugammadex exhibits linear kinetics in the dosage range of 1 to 16 mg/kg when administered as an IV bolus dose. In nonclinical drug distribution studies, sugammadex is retained in sites of active mineralization, such as bone and teeth, with a mean half-life of 172 and 8 days, respectively [see Use in Specific Populations (8.4) , Nonclinical Toxicology (13.2) ] . Metabolism In clinical studies, no metabolites of sugammadex have been observed and only renal excretion of the unchanged product was observed as the route of elimination. Elimination In adult anesthetized patients with normal renal function, the elimination half-life (t 1/2 ) of sugammadex is about 2 hours and the estimated plasma clearance is about 88 mL/min (based on compartmental pharmacokinetic analysis). A mass balance study demonstrated that >90% of the dose was excreted within 24 hours. Ninety-six percent (96%) of the dose was excreted in urine, of which at least 95% could be attributed to unchanged sugammadex. Excretion via feces or expired air was less than 0.02% of the dose. Administration of BRIDION to healthy volunteers resulted in increased renal elimination of rocuronium in complex. Patients with Renal Impairment Sugammadex is known to be substantially excreted by the kidney. The half-life of sugammadex in patients with mild, moderate and severe renal impairment is 4, 6, and 19 hours, respectively. In one study, exposure to sugammadex was prolonged, leading to 17-fold higher overall exposure in patients with severe renal impairment. Low concentrations of sugammadex are detectable for at least 48 hours post-dose in patients with severe renal impairment. In a second study comparing subjects with moderate or severe renal impairment to subjects with normal renal function, sugammadex clearance progressively decreased and t 1/2 was progressively prolonged with declining renal function. Exposure was 2-fold and 5-fold higher in subjects with moderate and severe renal impairment, respectively. Sugammadex concentrations were no longer detectable beyond 7 days post-dose in subjects with severe renal impairment. Geriatric Patients Geriatric patients may have mild or moderate renal impairment. Population pharmacokinetic analysis indicated that, beyond the effects of a decreased creatinine clearance, increased age has limited impact on sugammadex PK parameters [see Use in Specific Populations (8.5 , 8.6) ]. Pediatric Patients The pharmacokinetics of sugammadex in pediatric patients have been evaluated in 2 clinical studies following administration of intravenous doses of 2 or 4 mg/kg sugammadex administered for reversal of moderate or deep neuromuscular blockade, respectively. In one study, sugammadex pharmacokinetic parameters were estimated in pediatric patients 2 to <17 years of age with patients enrolled into 3 age groups (2 to <6, 6 to <12 and 12 to <17 years of age). In a second study, sugammadex pharmacokinetic parameters were estimated in pediatric patients birth to <2 years of age with patients enrolled into 4 age groups (birth to 27 days, 28 days to <3 months, 3 months to <6 months and 6 months to < 2 years). Sugammadex exposure (AUC 0-inf and C max ) increased in a dose-dependent, linear manner following administration of 2 or 4 mg/kg across patients birth to <17 years of age. Sugammadex exposure was approximately 40% lower in patients <6 years of age following administration of 2 or 4 mg/kg sugammadex compared to older pediatric patients (6 to <17 years) and adults; however, this difference was not clinically relevant [see Clinical Studies (14.1) ] . Both clearance and volume of distribution increase with increasing age in pediatric patients, whereas elimination half-life is generally similar across pediatric patients. As a result, the observed steady-state volume of distribution of sugammadex is approximately 3 to 10 liters and clearance is approximately 38 to 95 mL/min resulting in a half-life of approximately 1-2 hours in pediatric patients 2 to <17 years of age. By comparison, observed steady-state volume of distribution of sugammadex is approximately 1 to 3 liters and clearance is approximately 38 to 95 mL/min with a half-life of approximately 1-2 hours in pediatric patients birth to <2 years of age. Sex No pharmacokinetic differences between male and female subjects were observed. Race In a study in healthy Japanese and Caucasian subjects no clinically relevant differences in pharmacokinetic parameters were observed. Limited data do not indicate differences in pharmacokinetic parameters in Black or African Americans. Obesity In one clinical study of obese patients with a body mass index ≥40 kg/m 2 , sugammadex 2 mg/kg and 4 mg/kg was dosed according to ABW (n=76) or IBW (n=74). Sugammadex exposure increased in a dose-dependent, linear manner following administration according to ABW or IBW. No clinically relevant differences in pharmacokinetic parameters were observed between obese patients and the general population, when dosed according to ABW. [See Use in Specific Populations (8.10) .] Systemic exposure of sugammadex is approximately 50% lower with IBW dosing compared to ABW.