Opiranserin for Minimally Invasive Cholecystectomy

June 16, 2026 updated by: Young Song, Gangnam Severance Hospital

Comparison of Opiranserin/Acetaminophen Versus Ibuprofen/Acetaminophen for Postoperative Pain Management After Minimally Invasive Cholecystectomy: A Randomized, Controlled, Non-inferiority Trial

The purpose of this study is to evaluate whether the combination therapy of opiranserin and acetaminophen is non-inferior to the combination of non-steroidal anti-inflammatory drugs (NSAIDs) and acetaminophen for postoperative pain management after minimally invasive cholecystectomy.

This is a single-center, randomized, controlled, non-inferiority clinical trial in adult patients undergoing minimally invasive cholecystectomy. Participants will be randomly assigned to either the Treatement group (opiranserin + acetaminophen) or the control group (NSAIDs + acetaminophen) in a 1:1 ratio to compare the analgesic efficacy and safety between the two analgesic regimens.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Recruiting

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Estimated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
88

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Locations

  • South Korea
      • Seoul, South Korea, 06273
        • Recruiting
        • Gangnam Severance Hospital
        • Contact:
      • Seoul, South Korea, 06273
        • Not yet recruiting
        • Gangnam Severance Hospital
        • Contact:
          • Young Song

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Adult patient undergoing minimally invasive cholecystectomy

Exclusion Criteria:

  • Known hypersensitivity or allergy to acetaminophen, NSAIDs, opiranserin, or fentanyl.
  • pre-existing chronic pain,
  • clinically significant ECG findings (QRS > 200 msec, QTcF >450 msec)
  • severe renal impairment
  • severe hepatic impairment

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

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

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Opiranserin+Acetaminophen group
In the Opiranserin+Acetaminophen group, opiranserine 1000mg infusion will be provided over 10 hr. IV Acetaminophen 1g will be provided q 8h until 24 h potperatively.
Drug: Opiranserin+Acetaminophen
In the Opiranserin+Acetaminophen group, opiranserine 1000mg infusion will be provided over 10 hr. Opiranserin infusion will be started after the indduction of anesthesia. After laoding dose (160mg ) over 30 minutes, maintenace dose (840mg) will be infused over 9hr 30min. IV Acetaminophen 1g will be provided q 8h until 24 h potperatively.
Other Names:
  • Arm I
Active Comparator: Acetaminophen+NSAIDs group
In the Acetaminophen+NSAIDs group, Normal saline 500 ml will be provided over 10hr. IV Acetaminophen 1g and ibuprofen 300mg will be provided q 8h until 24 h potperatively.
Drug: Acetaminophen+NSAIDs
In the Acetaminophen+NSAIDs group, Normal saline 500 ml will be provided over 10hr. IV Acetaminophen 1g and ibuprofen 300mg will be provided q 8h until 24 h potperatively.
Other Names:
  • Arm II

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Area under the curve of the pain score at rest through 12 hours (NRS·h)
Time Frame: Until 12 hours postoperatively
Area under the curve of the numeric rating scale pain score at rest through 12 hours (Numerical Rating Scale·h), Pain score will be assess with the numerical rating scale (NRS), ranging from 0 (0, no pain) to 10 (maximum, worst pain), higher scores indicate greater pain intensity.
Until 12 hours postoperatively

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
opioid consumption
Time Frame: until 24hours postopratively
until 24hours postopratively
time to first rescue analgesics
Time Frame: until 24hours
time to first rescue analgesic requirements
until 24hours
incidence of nausea, vomiting
Time Frame: until 24hours
incidence of nausea, vomiting during postoperative 24 hours
until 24hours
hospital length of stay
Time Frame: until discharge, about 1-7 days
length of hospitalization
until discharge, about 1-7 days
Area under the curve of the pain score at rest through 24 hours
Time Frame: until 24hours postoperatively

Area under the curve of the numeric rating scale pain score at rest through 24 hours.

Area under the curve of the numeric rating scale pain score at rest through 24 hours (Numerical Rating Scale·h), Pain score will be assess with the numerical rating scale (NRS), ranging from 0 (0, no pain) to 10 (maximum, worst pain), higher scores indicate greater pain intensity.
until 24hours postoperatively
pain at rest
Time Frame: at 0.5, 2, 4, 6, 12, 18, 24hours postoperatively
numeric rating scale pain score at rest, Pain score will be assess with the numerical rating scale (NRS), ranging from 0 (0, no pain) to 10 (maximum, worst pain), higher scores indicate greater pain intensity.
at 0.5, 2, 4, 6, 12, 18, 24hours postoperatively
pain during movement
Time Frame: at 0.5, 2, 4, 6, 12, 18, 24hours postoperatively
numeric rating scale pain score during movement Pain score will be assess with the numerical rating scale (NRS), ranging from 0 (0, no pain) to 10 (maximum, worst pain), higher scores indicate greater pain intensity.
at 0.5, 2, 4, 6, 12, 18, 24hours postoperatively
nausea severity
Time Frame: until 24hours
severity of nausea using 0-10 numeric rating scale Nausea severity will be assess with the numerical rating scale (NRS), ranging from 0 (0, no nausea) to 10 (maximum, worst nausea), higher scores indicate greater nausea severity.
until 24hours
patient satisfaction
Time Frame: 24hours postoperatively
patient satisfaction regarding pain management asked at 24 hours postoperatively, using 0-10 scale Patient satisfaction will be assessd with the numerical rating scale (NRS), ranging from 0 (0, totally unsatisfied) to 10 (maximum, totally satisfied), higher scores indicate greater patient satisfaction.
24hours postoperatively
Quality of Recovery
Time Frame: 24hours postoperatively
Questionnaire of 15-item Quality of Recovery (QoR-15). Each item is scored on an 11-point numerical rating scale from 0 to 10. Total score range: Minimum 0 to maximum 150. Higher values indicate a better quality of postoperative recovery.
24hours postoperatively

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Gangnam Severance Hospital

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
June 10, 2026

Primary Completion (Estimated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
May 25, 2028

Study Completion (Estimated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
May 30, 2028

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
May 27, 2026

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
May 27, 2026

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
June 2, 2026

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
June 18, 2026

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
June 16, 2026

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
June 1, 2026

More Information

Terms related to this study

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • 3-2026-0114

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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