A Study of Bupivacaine Liposome Injection in the Treatment of Pain After Thoracoscopic Surgery

Official title

Efficacy, Safety and Pharmacokinetics of Bupivacaine Liposome Injection for Paravertebral Nerve Block in the Treatment of Postoperative Pain After Thoracoscopic Surgery: a Multicenter, Randomized, Double-blind, Dose-finding, Positive Control, Phase Ⅱ Clinical Trial

Overview

The objective of this study is to evaluate the efficacy, safety, and tolerability of bupivacaine liposomes for paravertebral nerve block in the treatment of thoracoscopic postoperative pain, and to evaluate the relevant human pharmacokinetics.

Interventions

• Drug Bupivacaine Liposome Injection
  Bupivacaine Liposome Injection Low Dose or Moderate Dose or High Dose
• Drug Bupivacaine Hydrochloride Injection
  Bupivacaine Hydrochloride Injection Low Dose or Moderate Dose or High Dose

Primary outcome measures

• Area under the time curve of pain intensity during exercise (or cough) for 72 hours after administration [Time frame: 0 minute to 72 hours after administration]

Secondary outcome measures (12)

• Area under the curve of pain intensity and time in exercise (or cough) state in 0-12h, 12-24h, 12-48h and 12-72h after administration [Time frame: 0 minute to 72 hours after administration]
• Area under the curve of pain intensity and time in resting state in 0-12h, 12-24h, 12-48h, 12-72h and 0-72h after administration [Time frame: 0 minute to 72 hours after administration]
• Pain intensity scores in resting state and exercise (or cough) state, including within 30 minutes after anesthesia recovery and various time points after administration (6h, 8h, 12h, 18h, 24h, 30h, 36h, 48h, 72h) [Time frame: recovery from anesthesia to 72 hours after administration]
• The duration of the first pain intensity score ≥4 points during exercise (or cough) after anesthesia recovery [Time frame: 0 minute to 72 hours after administration]
• The duration of the first pain intensity score ≥4 points at rest after anesthesia recovery [Time frame: 0 minute to 72 hours after administration]
• Maximum pain intensity score during exercise (or cough) within 72 hours after administration [Time frame: 0 minute to 72 hours after administration]
• Percentage of painless (pain intensity score ≤1 at rest) subjects at planned time points [Time frame: 0 minute to 72 hours after administration]
• Proportion of subjects who did not use remedial analgesia in 0-12h, 12-24h, 24-48h, 48-72h, 0-72h [Time frame: 0 minute to 72 hours after administration]
• Cumulative use of remedial analgesics in 0-12h, 12-24h, 24-48h, 48-72h, 0-72h [Time frame: 0 minute to 72 hours after administration]
• Time of first use of remedial analgesics [Time frame: The time of the first pain intensity rating to 72 hours after administration]
• Subjects' analgesic satisfaction scores [Time frame: 72 hours after administration]
• Investigators' analgesic satisfaction scores [Time frame: 72 hours after administration]

Eligibility criteria

Inclusion criteria

• Subjects who are willing to strictly follow the clinical trial protocol to complete this study and voluntarily sign informed consent;
• Elective surgical subjects undergoing lobectomy by single-aperture thoracoscope under general anesthesia;
• age ≥18 years old , Male or female;
• 18 kg/m2≤BMI≤30 kg/m2;
• ASA Physical Status Classification I-II;
• Female subjects of childbearing potential must agree to use contraception and refrain from egg donation from the signing of the informed consent form until 30 days after the last dose of the investigational drug. Serum or urine pregnancy tests must be negative before dosing and during the trial, and they must not be lactating. Male subjects with partners of childbearing potential must agree to use contraception and refrain from sperm donation from the signing of the informed consent form until 30 days after the last dose of the investigational drug.

Exclusion criteria

Participants with any of the following criteria were excluded from the study：

• Pre-existing and combined diseases:

(1) Subjects with a history of myocardial infarction or unstable angina pectoris, or a history of severe arrhythmias such as atrioventricular block of degree II and above, or NYHA grade II and above in the 6 months before randomization; (2) Subjects with a history of ischemic stroke or transient ischemic attack (TIA); (3) Subjects with psychiatric disorders (such as schizophrenia, depression, etc.) and cognitive dysfunction; (4) Subjects with sensory disorders such as hyperalgesia; (5) Subjects with other physical pain witch may affect the evaluation of postoperative pain; (6) Subjects with airway or spinal anatomic factors caused by obstruction of ventilation, bronchiectasis, severe intraoperative thoracic adhesion, etc.

2\. Laboratory and other tests:

• Abnormal laboratory results during screening.

•Fasting blood glucose (FPG) ≥10.0mmol/L.

•Abnormal liver function: aspartate aminotransferase (AST) or/and alanine aminotransferase (ALT) and/or total bilirubin (TBIL) ≥1.5×ULN.

• Abnormal renal function: serum creatinine (Cr) ≥1.5×ULN, or dialysis subjects.
• Abnormal coagulation function: PT> upper normal value +3s and/or APTT > upper normal value +10s.
• Platelet (PLT) <80×109/L.
• Hemoglobin concentration (Hb) < 70g/L.
• Screening period heart rate < 50 beats/min or heart rate > 100 beats/min; 12-lead ECG QTc interval prolonged: male ≥450ms, female ≥470ms.
• Subjects with refractory hypertension or a history of refractory hypertension before randomization.

3\. Combined drugs:

• Subjects who allergic to or contraindicated with bupivacaine, other amide local anesthetics, and other drugs that may be used during the trial (e.g., propofol, remazolam, opioids, etc.).
• Subjects who used any of the following drugs within 5 drug half-lives prior before randomization (drug half-lives are based on actual drug instructions, or at least 48 hours of elution if half-lives are unknown):

• Class III antiarrhythmic drugs such as amiodarone.
• Drugs that affect liver metabolism: strong CYP1A2 inhibitors such as ciprofloxacin, enoxacin, fluvoxamine; CYP1A2 substrates: such as theophylline, imipramine; Strong CYP3A4 inhibitors such as voriconazole, ketoconazole, Ritonavir; CYP3A4 substrates such as darunavir, Indinavir, saquinavir; Strong CYP3A4 inducers such as rifampin.
• Intravenous or oral corticosteroids.
• Sedative drugs: benzodiazepines (such as diazepam, flurazepam, oxazepam, cloazepine, triazolam, alprazolam, esazolam, midazolam, etc.), barbiturates, carbamazepine, phenytoin, magnesium sulfate, chloral hydrate, etc..
• Pain relief and other drugs: Nonsteroidal anti-inflammatory drugs (aspirin is permitted for the prevention of cardiovascular events, provided it is used steadily for at least 30 days prior to randomization, Daily dose ≤100mg/ day), opioid agonists/antagonists, central alpha-adrenergic agonists (e.g. Clonidine, dexmedetomidine), anticonvulsants (e.g. Carbamazepine, pregabalin, gabapentin), antidepressants (e.g. Tricyclic, selective 5-HT reuptake inhibitors).

4\. Others:

(1) Subjects had a history of substance abuse, drug use, and/or alcohol abuse within the 1 year prior to randomization, with alcohol abuse defined as drinking an average of more than 2 units of alcohol per day (1 unit =360mL beer or 45mL liquor with 40% alcohol or 150 ml wine); Or consume alcoholic food or drink within 24 hours before receiving the study drug.

(2) Subjects consumed excessive amounts of tea, coffee, grapefruit/grapefruit juice, grapefruit juice, caffeinated beverages (averaging more than 8 cups per day, 200 mL per cup) in the 14 days prior to randomization.

(3) Subjects who have participated in other clinical trials as subjects, and/or previously received investigational drug or device in this clinical trial within the 3 months prior to randomization.

(4) Subjects who have any other factors deemed unsuitable for participation in this trial by the investigator.

Criteria are shown verbatim from the registry (in English). Final eligibility is always assessed by the study center.

Healthy volunteers: No

Study design

Allocation

Randomized

Model

Parallel assignment

Masking

Triple blind

Primary purpose

Treatment

Study locations

China · 1 center

• Zhongshan Hospital Affiliated to Fudan University — Shanghai

Identifiers

NCT: NCT06529432 · BULI-201

Primary sources (government registries)

• ClinicalTrials.gov (US NIH)

View this study on ClinicalTrials.gov ↗