A Bridging Trial Comparing Sugammadex (Org 25969) at Reappearance of T2 in Japanese and Caucasian Participants. Part B: Caucasian Participants (P05971)

A Multi-Center, Randomized, Open-Label, Prospective Bridging, Parallel Dose-Finding Trial Comparing Efficacy, Safety and Pharmacokinetics of 4 Doses of Org 25969 and Placebo Administered at Reappearance of T2 After Rocuronium or Vecuronium in Japanese and Caucasian Subjects. Part B: Caucasian Subjects

The objective of the trial was to establish the dose-response relation of sugammadex (Org 25969) given as a reversal agent of rocuronium or vecuronium at reappearance of T2 (the amplitude of the first response of second twitch to train of four (TOF) stimulation, expressed as percentage of control first twitch, T1) during sevoflurane anesthesia for Caucasian participants.

Study Overview

• Status: Completed
• Conditions: Anesthesia, General
• Intervention / Treatment: Drug: Placebo; Drug: Rocuronium; Drug: Sugammadex; Drug: Vecuronium

Detailed Description

For most surgical procedures a depth of neuromuscular block of 1-2 twitches after TOF-stimulation is sufficient to avoid unwanted muscular activity. At reappearance of T2, the anesthesiologist might decide to either give (another) maintenance dose of rocuronium or vecuronium when surgery continues, to await spontaneous recovery of neuromuscular block or to reverse the neuromuscular block. Sugammadex has been shown in previous trials to greatly reduce the time to full recovery when administered at reappearance of T2, both after rocuronium- and vecuronium induced neuromuscular blockade. The current trial P05971 was conducted in Europe and set up to establish the dose response relationship of sugammadex given during sevoflurane anesthesia at reappearance of T2 after rocuronium or vecuronium in Caucasian participants. In addition to recovery time, also pharmacokinetics and safety of sugammadex were to be evaluated.

• Study Type: Interventional
• Enrollment (Actual): 100
• Phase: Phase 2

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 20 years to 65 years (Adult, Older Adult)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

Description

Inclusion Criteria:

• Is of American Society of Anesthesiologists (ASA) class 1 - 3;
• Is at least 20 years but under 65 years of age;
• Caucasian participants;
• Is scheduled for elective surgery requiring muscle relaxation in supine position and under sevoflurane anesthesia with an anticipated duration of about 1.5-3 hours;
• Has given written informed consent.

Exclusion criteria:

• Participants in whom a difficult intubation because of anatomical malformations was expected;
• Is known or suspected to have neuromuscular disorders impairing neuromuscular blocking (NMB) and/or significant renal dysfunction (for example a creatinine level > 1.6 mg/dl) and/or severe hepatic dysfunction.
• Is known or suspected to have a (family) history of malignant hyperthermia;
• Is known or suspected to have an allergy to narcotics, muscle relaxants or other medication used during general anesthesia;
• Is receiving medication expected to interfere with the rocuronium or vecuronium given in this trial, based on the dose and time of administration;
• Females who were pregnant;
• Females of childbearing potential not using birth control or using only oral contraception as birth control;
• Was breast-feeding;
• Has already participated in P05971, or in another trial with sugammadex;
• Has participated in another clinical trial, not preapproved by the Sponsor, within 6 months of entering into P05971.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: Randomized
• Interventional Model: Parallel Assignment
• Masking: Single

Number of Arms

10

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Placebo Comparator: Rocuronium + Placebo; After induction of anesthesia an intubation dose of 0.9 mg/kg rocuronium was administered intravenously (IV), followed by maintenance doses of 0.1-0.2 mg/kg rocuronium IV if necessary. At reappearance of T2 a single dose of placebo was administered IV.	Drug: Placebo; After induction of anesthesia an intubation dose of NMBA was administered IV: either 0.9 mg/kg rocuronium (arm 1) or 0.1 mg/kg vecuronium (arm 6). Maintenance doses of 0.1-0.2 mg/kg rocuronium IV or 0.02-0.03 mg/kg vecuronium IV could be administered if necessary. At reappearance of T2 the randomized single dose of Placebo IV was administered; Drug: Rocuronium; After induction of anesthesia an intubation dose of 0.9 mg/kg rocuronium was administered IV. Maintenance doses of 0.1-0.2 mg/kg rocuronium IV could be administered if necessary.
Experimental: Rocuronium + 0.5 mg/kg Sugammadex; After induction of anesthesia an intubation dose of 0.9 mg/kg rocuronium was administered IV, followed by maintenance doses of 0.1-0.2 mg/kg rocuronium IV if necessary. At reappearance of T2 a single dose of 0.5 mg/kg sugammadex was administered IV.	Drug: Rocuronium; After induction of anesthesia an intubation dose of 0.9 mg/kg rocuronium was administered IV. Maintenance doses of 0.1-0.2 mg/kg rocuronium IV could be administered if necessary.; Drug: Sugammadex; After induction of anesthesia an intubation dose of (Neuromuscular blocking agent) NMBA was administered IV: either 0.9 mg/kg rocuronium or 0.1 mg/kg vecuronium. Maintenance doses of 0.1-0.2 mg/kg rocuronium IV or 0.02-0.03 mg/kg vecuronium IV could be administered if necessary. At reappearance of T2 the randomized single dose of sugammadex 0.5 to 4 mg/kg IV was administered; Other Names: Org 25969
Experimental: Rocuronium + 1.0 mg/kg Sugammadex; After induction of anesthesia an intubation dose of 0.9 mg/kg rocuronium was administered IV, followed by maintenance doses of 0.1-0.2 mg/kg rocuronium IV if necessary. At reappearance of T2 a single dose of 1.0 mg/kg sugammadex was administered IV.	Drug: Rocuronium; After induction of anesthesia an intubation dose of 0.9 mg/kg rocuronium was administered IV. Maintenance doses of 0.1-0.2 mg/kg rocuronium IV could be administered if necessary.; Drug: Sugammadex; After induction of anesthesia an intubation dose of (Neuromuscular blocking agent) NMBA was administered IV: either 0.9 mg/kg rocuronium or 0.1 mg/kg vecuronium. Maintenance doses of 0.1-0.2 mg/kg rocuronium IV or 0.02-0.03 mg/kg vecuronium IV could be administered if necessary. At reappearance of T2 the randomized single dose of sugammadex 0.5 to 4 mg/kg IV was administered; Other Names: Org 25969
Experimental: Rocuronium + 2.0 mg/kg Sugammadex; After induction of anesthesia an intubation dose of 0.9 mg/kg rocuronium was administered IV, followed by maintenance doses of 0.1-0.2 mg/kg rocuronium IV if necessary. At reappearance of T2 a single dose of 2.0 mg/kg sugammadex was administered IV.	Drug: Rocuronium; After induction of anesthesia an intubation dose of 0.9 mg/kg rocuronium was administered IV. Maintenance doses of 0.1-0.2 mg/kg rocuronium IV could be administered if necessary.; Drug: Sugammadex; After induction of anesthesia an intubation dose of (Neuromuscular blocking agent) NMBA was administered IV: either 0.9 mg/kg rocuronium or 0.1 mg/kg vecuronium. Maintenance doses of 0.1-0.2 mg/kg rocuronium IV or 0.02-0.03 mg/kg vecuronium IV could be administered if necessary. At reappearance of T2 the randomized single dose of sugammadex 0.5 to 4 mg/kg IV was administered; Other Names: Org 25969
Experimental: Rocuronium + 4.0 mg/kg Sugammadex; After induction of anesthesia an intubation dose of 0.9 mg/kg rocuronium was administered IV, followed by maintenance doses of 0.1-0.2 mg/kg rocuronium IV if necessary. At reappearance of T2 a single dose of 4.0 mg/kg sugammadex was administered IV.	Drug: Rocuronium; After induction of anesthesia an intubation dose of 0.9 mg/kg rocuronium was administered IV. Maintenance doses of 0.1-0.2 mg/kg rocuronium IV could be administered if necessary.; Drug: Sugammadex; After induction of anesthesia an intubation dose of (Neuromuscular blocking agent) NMBA was administered IV: either 0.9 mg/kg rocuronium or 0.1 mg/kg vecuronium. Maintenance doses of 0.1-0.2 mg/kg rocuronium IV or 0.02-0.03 mg/kg vecuronium IV could be administered if necessary. At reappearance of T2 the randomized single dose of sugammadex 0.5 to 4 mg/kg IV was administered; Other Names: Org 25969
Placebo Comparator: Vecuronium + Placebo; After induction of anesthesia an intubation dose of 0.1 mg/kg vecuronium was administered IV, followed by maintenance doses of 0.02-0.03 mg/kg vecuronium IV if necessary. At reappearance of T2 a single dose of placebo was administered IV.	Drug: Placebo; After induction of anesthesia an intubation dose of NMBA was administered IV: either 0.9 mg/kg rocuronium (arm 1) or 0.1 mg/kg vecuronium (arm 6). Maintenance doses of 0.1-0.2 mg/kg rocuronium IV or 0.02-0.03 mg/kg vecuronium IV could be administered if necessary. At reappearance of T2 the randomized single dose of Placebo IV was administered; Drug: Vecuronium; After induction of anesthesia an intubation dose of 0.1 mg/kg vecuronium was administered IV. Maintenance doses of 0.02-0.03 mg/kg vecuronium IV could be administered if necessary.
Experimental: Vecuronium + 0.5 mg/kg Sugammadex; After induction of anesthesia an intubation dose of 0.1 mg/kg vecuronium was administered IV, followed by maintenance doses of 0.02-0.03 mg/kg vecuronium IV if necessary. At reappearance of T2 a single dose of 0.5 mg/kg sugammadex was administered IV.	Drug: Sugammadex; After induction of anesthesia an intubation dose of (Neuromuscular blocking agent) NMBA was administered IV: either 0.9 mg/kg rocuronium or 0.1 mg/kg vecuronium. Maintenance doses of 0.1-0.2 mg/kg rocuronium IV or 0.02-0.03 mg/kg vecuronium IV could be administered if necessary. At reappearance of T2 the randomized single dose of sugammadex 0.5 to 4 mg/kg IV was administered; Other Names: Org 25969; Drug: Vecuronium; After induction of anesthesia an intubation dose of 0.1 mg/kg vecuronium was administered IV. Maintenance doses of 0.02-0.03 mg/kg vecuronium IV could be administered if necessary.
Experimental: Vecuronium + 1.0 mg/kg Sugammadex; After induction of anesthesia an intubation dose of 0.1 mg/kg vecuronium was administered IV, followed by maintenance doses of 0.02-0.03 mg/kg vecuronium IV if necessary. At reappearance of T2 a single dose of 1.0 mg/kg sugammadex was administered IV.	Drug: Sugammadex; After induction of anesthesia an intubation dose of (Neuromuscular blocking agent) NMBA was administered IV: either 0.9 mg/kg rocuronium or 0.1 mg/kg vecuronium. Maintenance doses of 0.1-0.2 mg/kg rocuronium IV or 0.02-0.03 mg/kg vecuronium IV could be administered if necessary. At reappearance of T2 the randomized single dose of sugammadex 0.5 to 4 mg/kg IV was administered; Other Names: Org 25969; Drug: Vecuronium; After induction of anesthesia an intubation dose of 0.1 mg/kg vecuronium was administered IV. Maintenance doses of 0.02-0.03 mg/kg vecuronium IV could be administered if necessary.
Experimental: Vecuronium + 2.0 mg/kg Sugammadex; After induction of anesthesia an intubation dose of 0.1 mg/kg vecuronium was administered IV, followed by maintenance doses of 0.02-0.03 mg/kg vecuronium IV if necessary. At reappearance of T2 a single dose of 2.0 mg/kg sugammadex was administered IV.	Drug: Sugammadex; After induction of anesthesia an intubation dose of (Neuromuscular blocking agent) NMBA was administered IV: either 0.9 mg/kg rocuronium or 0.1 mg/kg vecuronium. Maintenance doses of 0.1-0.2 mg/kg rocuronium IV or 0.02-0.03 mg/kg vecuronium IV could be administered if necessary. At reappearance of T2 the randomized single dose of sugammadex 0.5 to 4 mg/kg IV was administered; Other Names: Org 25969; Drug: Vecuronium; After induction of anesthesia an intubation dose of 0.1 mg/kg vecuronium was administered IV. Maintenance doses of 0.02-0.03 mg/kg vecuronium IV could be administered if necessary.
Experimental: Vecuronium + 4.0 mg/kg Sugammadex; After induction of anesthesia an intubation dose of 0.1 mg/kg vecuronium was administered IV, followed by maintenance doses of 0.02-0.03 mg/kg vecuronium IV if necessary. At reappearance of T2 a single dose of 4.0 mg/kg sugammadex was administered IV.	Drug: Sugammadex; After induction of anesthesia an intubation dose of (Neuromuscular blocking agent) NMBA was administered IV: either 0.9 mg/kg rocuronium or 0.1 mg/kg vecuronium. Maintenance doses of 0.1-0.2 mg/kg rocuronium IV or 0.02-0.03 mg/kg vecuronium IV could be administered if necessary. At reappearance of T2 the randomized single dose of sugammadex 0.5 to 4 mg/kg IV was administered; Other Names: Org 25969; Drug: Vecuronium; After induction of anesthesia an intubation dose of 0.1 mg/kg vecuronium was administered IV. Maintenance doses of 0.02-0.03 mg/kg vecuronium IV could be administered if necessary.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Time From Start of Administration of Sugammadex or Placebo to Recovery of the Fourth Twitch/First Twitch (T4/T1) Ratio to 0.9	Neuromuscular functioning was monitored by applying repetitive Train-Of-Four (TOF) electrical stimulations to the ulnar nerve every 15 seconds and assessing twitch response at the adductor pollicis muscle. T1 and T4 refer to the amplitudes (heights) of the first and fourth twitches, respectively, after TOF nerve stimulation. The T4/T1 Ratio (expressed as a decimal of up to 1.0) indicates the extent of recovery from neuromuscular blockade (NMB). In this study, twitch responses were recorded until the T4/T1 Ratio reached >= 0.9, the minimum acceptable ratio that indicated recovery from NMB. A faster time to recovery of the T4/T1 Ratio to 0.9 indicates a faster recovery from NMB.	Day 1: From start of sugammadex or placebo administration to recovery of T4/T1 ratio to 0.9 (up to 24 hours)

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Time From Start of Administration of Sugammadex or Placebo to Recovery of the T4/T1 Ratio to 0.7	Neuromuscular functioning was monitored by applying repetitive TOF electrical stimulations to the ulnar nerve every 15 seconds and assessing twitch response at the adductor pollicis muscle. T1 and T4 refer to the amplitudes (heights) of the first and fourth twitches, respectively, after TOF nerve stimulation. The T4/T1 Ratio (expressed as a decimal of up to 1.0) indicates the extent of recovery from NMB. A faster time to recovery of the T4/T1 Ratio to 0.7 indicates a faster recovery from NMB.	Day 1: From start of sugammadex or placebo administration to recovery of T4/T1 ratio to 0.7 (up to 24 hours)
Time From Start of Administration of Sugammadex or Placebo to Recovery of the T4/T1 Ratio to 0.8	Neuromuscular functioning was monitored by applying repetitive TOF electrical stimulations to the ulnar nerve every 15 seconds and assessing twitch response at the adductor pollicis muscle. T1 and T4 refer to the amplitudes (heights) of the first and fourth twitches, respectively, after TOF nerve stimulation. The T4/T1 Ratio (expressed as a decimal of up to 1.0) indicates the extent of recovery from NMB. A faster time to recovery of the T4/T1 Ratio to 0.8 indicates a faster recovery from NMB.	Day 1: From start of sugammadex or placebo administration to recovery of T4/T1 ratio to 0.8 (up to 24 hours)

Collaborators and Investigators

• Sponsor: Merck Sharp & Dohme LLC

Publications and helpful links

General Publications

• Puhringer FK, Gordon M, Demeyer I, Sparr HJ, Ingimarsson J, Klarin B, van Duijnhoven W, Heeringa M. Sugammadex rapidly reverses moderate rocuronium- or vecuronium-induced neuromuscular block during sevoflurane anaesthesia: a dose-response relationship. Br J Anaesth. 2010 Nov;105(5):610-9. doi: 10.1093/bja/aeq226. Epub 2010 Sep 28.

Helpful Links

• Click here to access a synopsis of the study results.

Study record dates

Study Major Dates

• Study Start (Actual): September 20, 2005
• Primary Completion (Actual): August 31, 2006
• Study Completion (Actual): August 31, 2006

Study Registration Dates

• First Submitted: October 31, 2007
• First Submitted That Met QC Criteria: October 31, 2007
• First Posted (Estimate): November 2, 2007

Study Record Updates

• Last Update Posted (Actual): November 25, 2019
• Last Update Submitted That Met QC Criteria: November 13, 2019
• Last Verified: November 1, 2019

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Physiological Effects of Drugs; Neurotransmitter Agents; Molecular Mechanisms of Pharmacological Action; Peripheral Nervous System Agents; Cholinergic Antagonists; Cholinergic Agents; Neuromuscular Agents; Nicotinic Antagonists; Neuromuscular Nondepolarizing Agents; Neuromuscular Blocking Agents; Rocuronium; Vecuronium Bromide
• Other Study ID Numbers: P05971; 19.4.208B (Other Identifier: Organon Protocol Number); MK-8616-035 (Other Identifier: Merck Protocol Number); 2005-001133-15 (EudraCT Number)

Plan for Individual participant data (IPD)

Study Data/Documents

1. CSr Synopsis