# Effect of Tramadol Versus Morphine on PD1 and PD1-ligand in Patients With Chronic Cancer Pain

> **NCT04589494** · PHASE2,PHASE3 · UNKNOWN · sponsor: **Assiut University** · enrollment: 15 (estimated)

## Conditions studied

- Chronic Pain

## Interventions

- **DRUG:** Tramadol Hydrochloride

## Key facts

- **NCT ID:** NCT04589494
- **Lead sponsor:** Assiut University
- **Sponsor class:** OTHER
- **Phase:** PHASE2,PHASE3
- **Study type:** INTERVENTIONAL
- **Status:** UNKNOWN
- **Start date:** 2020-04-16
- **Primary completion:** 2021-02
- **Final completion:** 2021-05
- **Target enrollment:** 15 (ESTIMATED)
- **Last updated:** 2021-01-14


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04589494

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04589494, "Effect of Tramadol Versus Morphine on PD1 and PD1-ligand in Patients With Chronic Cancer Pain". Retrieved via AI Analytics 2026-05-27 from https://api.ai-analytics.org/clinical/NCT04589494. Licensed CC0.

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