Efficacy and Safety of Anrikefon Injection for the Treatment of Postoperative Pain in Patients Undergoing Laparoscopic Hepatectomy

September 14, 2026 updated by: Tianjin Medical University Cancer Institute and Hospital

Efficacy and Safety of Anrikefon Injection for the Treatment of Postoperative Pain in Patients Undergoing Laparoscopic Hepatectomy--A Single-center, Randomized, Controlled Clinical Study

Efficacy and safety of Anrikefon injection for the treatment of postoperative pain in patients undergoing laparoscopic hepatectomy--A single-center, randomized, controlled clinical study

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Not yet 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.
108

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.
  • Phase 2

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.

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:

  1. Age between 18 and 75 years, any gender;
  2. American Society of Anesthesiologists (ASA) score of I or II;
  3. BMI between 18 kg/m² and 30 kg/m²;
  4. Patients scheduled for laparoscopic liver resection under general anesthesia, with surgery lasting less than 6 hours;
  5. Surgical incision less than 10 cm;
  6. Able to understand pain intensity assessment methods.

Participants understand the purpose and procedures of this study, voluntarily participate, and sign a written informed consent form.

Exclusion Criteria:

  1. Patients allergic to opioids, flurbiprofen ester, or any other ingredients in the investigational drugs.
  2. Patients expected to use continuous epidural analgesia or local block analgesia during the treatment period.
  3. Patients with a history of gastrointestinal ulcers or bleeding who need treatment.
  4. Patients undergoing emergency surgery or trauma.
  5. Patients whose surgery needs to be converted to open abdominal surgery.
  6. Patients unwilling to use patient-controlled intravenous analgesia (PCIA).
  7. Patients with a history of upper abdominal surgery.
  8. Patients expected to require postoperative continued intubation.
  9. Patients needing postoperative admission to the ICU.
  10. Patients with any of the following disease history or evidence before screening:
  11. Severe cardiovascular or pulmonary diseases (myocardial infarction, heart failure, or respiratory failure).
  12. Neurological or psychiatric history: brain injury, intracranial hypertension, schizophrenia, mania, etc., judged by the investigator as not suitable for the study.
  13. History of digestive diseases: intestinal obstruction or other digestive system diseases that may cause nausea or vomiting as judged by the investigator; accompanied by other severe digestive tract issues affecting digestion (e.g., severe constipation, duodenal stasis syndrome, etc.), or other digestive diseases evaluated by the investigator as unsuitable for the study.
  14. Patients with obvious chronic dizziness or diagnosed vestibular function disorders (other than motion sickness), including but not limited to peripheral vestibular syndrome or central vestibular syndrome.
  15. Patients who received neoadjuvant treatment before surgery.
  16. Patients who experienced nausea, retching, or vomiting within 24 hours before anesthesia induction (excluding bowel prep-related cases).
  17. Known allergy or contraindication to other anesthetics or antiemetics that may be used during the trial.
  18. Patients who used drugs with unclear half-lives that have analgesic or antiemetic effects within 14 days before randomization, or whose last use was less than 5 half-lives or the drug's effective duration (whichever is longer), including but not limited to opioids, non-opioid analgesics, antiemetics (or drugs with antiemetic effects), sedatives, anesthetics, corticosteroids, and other similar drugs.
  19. Patients needing dialysis or who have alcoholism during treatment.
  20. Pregnant or breastfeeding women, or those planning pregnancy during the study period or within 3 months after study completion.
  21. Subjects the investigator believes have any other factor making them unsuitable for this clinical study.

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: None (Open Label)

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: Anruikefen
Drug: Anrikefon Injection
For patients undergoing laparoscopic liver resection, randomization is completed within 2 hours after surgery. Within 30 minutes after successful randomization, they receive their first injection of either Anruikefen or Flurbiprofen Ester. After the first dose, at 8±1h, 16±1h, 24±1h, 32±1h, 40±1h, 48±1h, 56±1h, and 64±1h, each participant is given a corresponding dose of Anruikefen IV infusion
Placebo Comparator: Flurbiprofen Ester
Drug: Flurbiprofen
For patients undergoing laparoscopic liver resection, randomization is completed within 2 hours after surgery. Within 30 minutes after successful randomization, they receive their first injection of either Anruikefen or Flurbiprofen Ester. After the first dose, at 8±1h, 16±1h, 24±1h, 32±1h, 40±1h, 48±1h, 56±1h, and 64±1h, each participant is given a corresponding dose of Flurbiprofen Ester IV infusion.

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
Time Frame
1. Area under the NRS pain score curve 24 hours after medication (AUC-NRS24)
Time Frame: 24 hours after surgery
24 hours after surgery

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
Time Frame
Pain intensity at rest and during movement (assess pain scores at 30 min, 1 h, 3 h, 6 h, 12 h, 24 h, 48 h, and 72 h after the first dose).
Time Frame: 0-72 hours after surgery
0-72 hours after surgery
Pain intensity difference (PID) at 30 min, 1, 3, 6, 12, 24, 48, and 72 h after dosing. Pain was assessed by NRS (0-10; 0=no pain, 10=severe pain). PID = baseline score (pre-dose/pre-op, 0 h) minus score at each time point. Unit: points.
Time Frame: 0-72 hours after surgery
0-72 hours after surgery
Sum of Pain Intensity Difference (SPID) at 30 min, 1, 3, 6, 12, 24, 48, and 72 h post-dose. NRS (0-10; 0=no pain, 10=worst pain) assessed pain. TPID = baseline score (pre-dose, 0 h) - score at each time point. Unit: points.
Time Frame: 0-72 hours after surgery
0-72 hours after surgery
Total Sufentanil dose administered via PCIA pump within 24 hours post-surgery. Measurement tool: PCIA pump (or electronic medical record). Measurement unit: micrograms (μg).
Time Frame: 24 hours after surgery
24 hours after surgery
Baseline, then assess NRS scores (visceral pain, incision pain, shoulder pain) at 30 min, 1 h, 3 h, 6 h, 12 h, 24 h, 48 h, and 72 h after the first dose.
Time Frame: 0-72 hours after surgery
0-72 hours after surgery
Use of rescue pain medication: cumulative usage of rescue pain medication (morphine injection mg) at 072h after the first dose
Time Frame: 0-72 hours after surgery
0-72 hours after surgery
The proportion of patients needing rescue pain relief within 72 hours after the first dose and the total amount of rescue medication used
Time Frame: 0-72 hours after surgery
0-72 hours after surgery
Incidence of nausea, vomiting, and PONV within 72 hours after the first dose
Time Frame: 0-72 hours after surgery
0-72 hours after surgery

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.
Tianjin Medical University Cancer Institute and 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 (Estimated)

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.
September 1, 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.
December 1, 2027

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.
December 1, 2027

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).
September 8, 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.
September 14, 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.
September 17, 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.
September 17, 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.
September 14, 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.
September 1, 2026

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

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.
  • E20261121

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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