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A Prospective Randomized Controlled Trial of Morphine versus Oxycodone for Cancer Pain: Genetic Determinants of Response to Opioids

A Prospective Randomized Controlled Trial of Morphine versus Oxycodone for Cancer Pain: Genetic Determinants of Response to Opioids

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
ISRCTN
Registry ID
ISRCTN65155201
Enrollment
200
Registered
2005-03-29
Start date
2005-05-01
Completion date
Unknown
Last updated
2016-10-17

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

Conditions

Moderate to severe cancer pain Cancer Pain

Interventions

Randomisation to receive oral morphine or oral oxycodone as first line Step 3 analgesics in moderate to severe cancer pain, and switch to alternative arm of study if lack of response to drug of initia

Sponsors

The Royal Marsden NHS Foundation Trust (UK)
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1. Patients must have a clinical or histological diagnosis of cancer 2. Patients whose pain is not controlled on Step 2 (weak opioid) analgesics (as defined by the WHO analgesic ladder) who clinically require a strong opioid 3. Patients must be over 18 years of age 4. Patients must be able to give written informed consent 5. Patients must be willing to undergo genetic screening

Exclusion criteria

Exclusion criteria: Current exclusion criteria as of 23/06/2011: 1. Patients with renal failure (1.5x ULN). These patients should be treated with alfentanil as per Palliative Care Clinical Guidelines 2. Patients must not currently be taking regular strong opioids 3. Patients requiring parenteral administration of opioids 4. Patients with predominantly incident pain 5. Patients with a clearly defined history of intolerance to morphine or oxycodone 6. Patients who are pregnant Previous exclusion criteria: 1. Patients with renal failure (1.5 x upper limit of normal [ULN]). These patients should be treated with alfentanil as per palliative care guidelines. 2. Patients must not have been taking regular Step 3 analgesics in the last month 3. Patients requiring parenteral administration of opioids 4. Patients with predominantly neuropathic pain 5. Patients with predominantly incident pain 6. Patients with a clearly defined history of intolerance to morphine or oxycodone

Design outcomes

Primary

MeasureTime frame
Difference in response rate to morphine versus oxycodone.

Secondary

MeasureTime frame
Differences in levels of toxicity and differences in pre-specified clinical, laboratory, genetic, immunological and proteomic determinants between the two study groups.

Countries

United Kingdom

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Mar 20, 2026