Methadone Versus Morphine for Cancer-Related Pain
21. januar 2016 opdateret af: Donald W. Northfelt, M.D., Mayo Clinic
Methadone Versus Morphine for Moderate to Severe Cancer-Related Pain: A Double-Blind Randomized Parallel Group Study
The purpose of this study is to compare methadone with morphine in the management of moderate to severe cancer pain.
Studieoversigt
Status
Afsluttet
Betingelser
Intervention / Behandling
Detaljeret beskrivelse
Treatment of cancer pain is based on the World Health Organization (WHO) step ladder approach to the use of analgesic drugs.
Medication potency increases at each step of the WHO ladder, from nonopioid (step 1; e.g., aspirin and nonsteroidal anti-inflammatory drugs) through weak opioids (step 2; e.g.
codeine) plus a nonopioid to strong opioids (step 3; e.g., morphine) plus a nonopioid analgesic.
Morphine is considered the gold standard for the treatment of moderate to severe pain, but this is based on level C criteria.
Research has discovered that methadone is a potent opioid that operates at several levels which are important for pain control.
The primary aim is to compare morphine versus methadone as a first-line analgesic in patients with moderate to severe cancer pain.
Patients will be randomized to receive either oral slow-release morphine (15 mg) every 8 hours and immediate-release morphine (10 mg) every 4 hours as needed for breakthrough pain or oral methadone 2.5 mg every 8 hours and methadone 2.5 mg every 4 hours as needed for breakthrough pain.
Our hypothesis is that methadone will provide equivalent pain control efficacy after 4 weeks of therapy.
We postulate that methadone will be as preferable as morphine as an analgesic.
We will compare the two drugs via adverse effects and compare stability of analgesia via comparison of the number of breakthrough pain episodes.
The study will attempt to establish equivalency of methadone as a first-line analgesic for moderate to severe cancer pain.
Undersøgelsestype
Interventionel
Tilmelding (Faktiske)
1
Fase
- Fase 2
Kontakter og lokationer
Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.
Studiesteder
-
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Arizona
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Scottsdale, Arizona, Forenede Stater, 85259
- Mayo Clinic Arizona
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-
Deltagelseskriterier
Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.
Berettigelseskriterier
Aldre berettiget til at studere
18 år til 70 år (Voksen, Ældre voksen)
Tager imod sunde frivillige
Ingen
Køn, der er berettiget til at studere
Alle
Beskrivelse
Inclusion Criteria:
- Must have a telephone
- Age: patient must be 18 years or older and less than 70 years of age
- Life expectancy of 3 months or greater
- No prior use of step-3 opioids (step 2 opioids are allowed)
- Provision of informed consent
- Score of 26 or greater on Mini-Mental Status Exam (MMSE) (to be done by investigator if there is question about mental status)
- Nonmalignant pain will be excluded; however, if the patient has both malignant and nonmalignant pain, entry into the trial will be determined by the predominant site of pain
- Moderate to severe cancer related pain that requires the use of step-3 opioids
- Normal renal function
- There will be no exclusionary criteria based on Karnofsky score
- Must live no more than 1 hour away from clinic
- Patient must have pain severity of 5-7/10 on a 0-10 pain scale
Exclusion Criteria:
- Nursing home patients
- Obvious cognitive dysfunction
- Intractable nausea or vomiting
- A true allergy or intolerance to opioids
- Unstable renal function
- Undergoing therapeutic procedures likely to influence pain during the study period
- Gastrointestinal pathology or surgery that influences absorption of morphine or methadone
- Must not have had treatment with radiotherapy, chemotherapy or radionuclides in the last 30 days
- History of drug seeking behavior
- Respiratory compromise
- Treatment with bisphosphonates within the last month
- Use of MAO inhibitors
- Drugs that interfere with CYP34A or CYP2D6
- Drugs that interfere with morphine metabolism
- Retroviral therapies
- Active radiation or antineoplastic therapies
- Hepatic dysfunction
- As judged by the investigator, any evidence of severe or uncontrolled systemic disease (e.g., unstable or uncompensated respiratory, cardiac, hepatic, or renal disease)
- Evidence of any other significant clinical disorder or laboratory finding that makes it undesirable for the patient to participate in the study
- Study will exclude women who are pregnant and/or nursing
- Women who are of child bearing potential must have a negative urine pregnancy test
- Patients with a recent substance abuse history will be excluded
- Patients with major depression will be excluded
Studieplan
Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
- Primært formål: Behandling
- Tildeling: Randomiseret
- Interventionel model: Parallel tildeling
- Maskning: Firedobbelt
Våben og indgreb
Deltagergruppe / Arm |
Intervention / Behandling |
|---|---|
|
Aktiv komparator: Methadone
Oral methadone 2.5 mg every 8 hours, and oral methadone 2.5 mg every 4 hours as needed for breakthrough pain.
|
Oral methadone 2.5 mg every 8 hours, and oral methadone 2.5 mg every 4 hours as needed for breakthrough pain.
Andre navne:
|
|
Aktiv komparator: Morphine
Oral slow-release morphine (15 mg) every 8 hours, and immediate-release morphine (10 mg) every 4 hours as needed for breakthrough pain.
|
Oral slow-release morphine 15 mg every 8 hours, and oral immediate-release morphine 10 mg every 4 hours as needed for breakthrough pain.
Andre navne:
|
Hvad måler undersøgelsen?
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
|
Change in Numeric Pain Scale Score
Tidsramme: Baseline, Week 4
|
Subjects will be verbally questioned about their pain on a scale from 0 to 10, with 0 being symptoms are absent to 10, the worst possible pain.
Response to treatment is defined as a 33% reduction in pain score from the baseline to the Week 4 pain score.
|
Baseline, Week 4
|
Sekundære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
|
Change in Numeric Pain Scale Score
Tidsramme: 48 hours
|
Subjects will be verbally questioned about their pain on a scale from 0 to 10, with 0 being symptoms are absent to 10, the worst possible pain.
|
48 hours
|
Samarbejdspartnere og efterforskere
Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.
Sponsor
Efterforskere
- Studiestol: Donald Northfelt, M.D., Mayo Clinic
Publikationer og nyttige links
Den person, der er ansvarlig for at indtaste oplysninger om undersøgelsen, leverer frivilligt disse publikationer. Disse kan handle om alt relateret til undersøgelsen.
Hjælpsomme links
Datoer for undersøgelser
Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.
Studer store datoer
Studiestart
1. august 2007
Primær færdiggørelse (Faktiske)
1. april 2009
Studieafslutning (Faktiske)
1. april 2009
Datoer for studieregistrering
Først indsendt
12. december 2007
Først indsendt, der opfyldte QC-kriterier
13. december 2007
Først opslået (Skøn)
14. december 2007
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Skøn)
19. februar 2016
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
21. januar 2016
Sidst verificeret
1. januar 2016
Mere information
Begreber relateret til denne undersøgelse
Nøgleord
Yderligere relevante MeSH-vilkår
Andre undersøgelses-id-numre
- 07-003051
Disse oplysninger blev hentet direkte fra webstedet clinicaltrials.gov uden ændringer. Hvis du har nogen anmodninger om at ændre, fjerne eller opdatere dine undersøgelsesoplysninger, bedes du kontakte register@clinicaltrials.gov. Så snart en ændring er implementeret på clinicaltrials.gov, vil denne også blive opdateret automatisk på vores hjemmeside .