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Effect of genetic difference (CYP2D6, CYP3A) on the use of pain medication for better pain relief in patients undergoing major abdominal surgery

Association of CYP2D6 and CYP3A Gene Polymorphisms with Postoperative Opioid Consumption and Analgesic Response in Major Abdominal Surgery: A Randomized Controlled Trial

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
CTRI
Registry ID
CTRI/2026/05/110903
Enrollment
100
Registered
2026-05-22
Start date
Unknown
Completion date
Unknown
Last updated
2026-06-01

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Health Condition 1: O- Medical and Surgical

Interventions

Intervention1: genotype guided analgesia : Analgesia will be provided according to genotype for up to 48hours after surgery. Control Intervention1: Control(Usual Care): Analgesic management per stan

Sponsors

DHR-MRU
Lead Sponsor

Eligibility

Inclusion criteria

Inclusion criteria: ASA Grades one two and three Elective major abdominal surgery requiring postoperative opioid analgesia Postoperative hospital stay more than 48 hrs Written informed consent

Exclusion criteria

Exclusion criteria: Chronic opioid use for more than seven days preoperatively Severe hepatic or renal impairment Pregnancy or lactation Allergy to study drugs Declines genetic testing

Design outcomes

Primary

MeasureTime frame
To compare total opioid consumption in the first 48 hours after surgery between the two groups.Timepoint: At 48 hours after surgery.

Secondary

MeasureTime frame
Compare postoperative pain scores (NRS) at rest & movement. To compare the incidence of opioid-related adverse events (respiratory depression, sedation, PONV) in 48 hours. Measure feasibility outcomes: proportion with actionable genotype, median lab turnaround time, proportion of patients in intervention arm where genotype altered prescription. Assess patient satisfaction with pain control (Likert scale) & hospital length of stay. Timepoint: at 6, 12, 24, 48h after Surgery

Countries

India

Contacts

Public ContactUrvashi Yadav

UPUMS, Saifai,

drurvikgmu@gmail.com7500186161

Outcome results

None listed

Source: CTRI (via WHO ICTRP) · Data processed: Jun 11, 2026