Dexamethasone vs Placebo in the Prophylaxis of Radiation-Induced Pain Flare Following Palliative Radiotherapy for Bone Metastases

A Randomized Phase III Double-Blind Study of Dexamethasone Versus Placebo in the Prophylaxis of Radiation-Induced Pain Flare Following Palliative Radiotherapy for Bone Metastases

This research is being done because is is not known if dexamethasone can prevent pain flare (their pain temporarily gets worse before it gets better) caused by the radiation used to treat painful bone metastases. Using dexamethasone to prevent pain like this has been studied in a few people and seems promising, but it is not clear if it can decrease the pain or prevent the pain flare before it happens.

Study Overview

• Status: Completed
• Conditions: Bone Metastases
• Intervention / Treatment: Drug: Dexamethasone; Drug: Placebo

Detailed Description

Previous research has shown that for patients who receive radiation therapy to treat their painful bone metastases, about 2 out of every 5 patients (about 40%) experience pain flare. The purpose of this study is to find out whether pain flare is prevented by receiving 8mg dexamethasone at least one hour prior to radiotherapy and once daily for the following 4 days. To do this, half of the patients in this study will get dexamethasone and the other half will receive a placebo (a substance that does not do anything). Using a placebo is the best way to see if a new therapy is effective and to clearly see the potential side effects and impact on quality of life.

• Study Type: Interventional
• Enrollment (Actual): 298
• Phase: Phase 3

Contacts and Locations

Study Locations

• Canada
  • Alberta
    • Calgary, Alberta, Canada, T2N 4N2
      • Tom Baker Cancer Centre
    • Edmonton, Alberta, Canada, T6G 1Z2
      • Cross Cancer Institute
  • British Columbia
    • Abbotsford, British Columbia, Canada, V2S 0C2
      • BCCA - Abbotsford Centre
    • Vancouver, British Columbia, Canada, V5Z 4E6
      • BCCA - Vancouver Cancer Centre
    • Victoria, British Columbia, Canada, V8R 6V5
      • BCCA - Vancouver Island Cancer Centre
  • Manitoba
    • Winnipeg, Manitoba, Canada, R3E 0V9
      • CancerCare Manitoba
  • New Brunswick
    • Moncton, New Brunswick, Canada, E1C 8X3
      • The Vitalite Health Network - Dr. Leon Richard
  • Ontario
    • Barrie, Ontario, Canada, L4M 6M2
      • Royal Victoria Regional Health Centre
    • Hamilton, Ontario, Canada, L8V 5C2
      • Juravinski Cancer Centre at Hamilton Health Sciences
    • Kingston, Ontario, Canada, K7L 5P9
      • Cancer Centre of Southeastern Ontario at Kingston
    • Kitchener, Ontario, Canada, N2G 1G3
      • Grand River Regional Cancer Centre
    • London, Ontario, Canada, N6A 4L6
      • London Regional Cancer Program
    • Newmarket, Ontario, Canada, L3Y 2P9
      • Stronach Regional Health Centre at Southlake
    • Ottawa, Ontario, Canada, K1H 8L6
      • Ottawa Hospital Research Institute
    • Toronto, Ontario, Canada, M4N 3M5
      • Odette Cancer Centre
    • Toronto, Ontario, Canada, M5G 2M9
      • Univ. Health Network-Princess Margaret Hospital
  • Quebec
    • Montreal, Quebec, Canada, H2L 4M1
      • CHUM - Hopital Notre-Dame
    • Montreal, Quebec, Canada, H1T 2M4
      • Hopital Maisonneuve-Rosemont
    • Quebec City, Quebec, Canada, G1R 2J6
      • CHUQ-Pavillon Hotel-Dieu de Quebec
    • Sherbrooke, Quebec, Canada, J1H 5N4
      • Centre Hospitalier Universitaire de Sherbrooke
  • Saskatchewan
    • Regina, Saskatchewan, Canada, S4T 7T1
      • Allan Blair Cancer Centre
    • Saskatoon, Saskatchewan, Canada, S7N 4H4
      • Saskatoon Cancer Centre

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years and older (Adult, Older Adult)
• Accepts Healthy Volunteers: No

Description

Inclusion Criteria:

• Have a histologically or cytologically proven malignancy. All non-hematologic malignant tumours of any histology are eligible.
• Be 18 years of age or older at the time of randomization.
• Have bone metastasis(es) corresponding to the clinically painful area(s) documented by radiological imaging within six months prior to randomization.
• Karnofsky Performance Status (KPS) must be ≥ 40 at the time of the baseline evaluation (within seven days prior to randomization). As it is difficult to obtain complete data from inpatients on a daily basis, they should not be randomized to this study.
• Is planned to receive palliative radiotherapy to one or two bony metastasis(es) with the treatment given as 8 Gy in a single fraction to all sites to be followed for the study. Although a maximum of two sites can be treated and followed for the study, patients with more than two skeletal metastases are eligible. At the time of delivery of study radiotherapy, only the site(s) being followed for the study may be treated.
• Is able to provide the worst pain score at the bony metastatic site(s) planned for palliative radiotherapy.
• Has a baseline worst pain score ≥ 2 on a scale of 0-10 at all the bony metastatic site(s) planned for palliative radiotherapy as part of this study within 7 days prior to randomization. If two painful sites will be followed for the study, this requirement must be met on the same day for both sites.
• Is able and willing to fill out the daily diary.
• Is able (i.e. sufficiently fluent) and willing to complete the quality of life questionnaire in either English or French. The baseline assessment must be completed within required timelines prior to randomization. Inability (illiteracy in English or French, loss of sight, or other equivalent reason) to complete the questionnaires will not make the patient ineligible for the study. However, ability but unwillingness to complete the questionnaires will make the patient ineligible.
• Patient consent must be obtained according to local Institutional and/or University Human Experimentation Committee requirements. It will be the responsibility of the local participating investigators to obtain the necessary local clearance, and to indicate in writing to the NCIC CTG Study Coordinator that such clearance has been obtained, before the trial can commence in that centre. Because of differing requirements, a standard consent form for the trial will not be provided but a sample form is provided. A copy of the initial full board REB approval and approved consent form must be sent to the central office. The patient must sign the consent form prior to randomization. Please note that the consent form for this study must contain a statement which gives permission for the NCIC CTG and monitoring agencies to review patient records.
• If being enrolled through a centre participating in the correlative science component of the study, is willing and able to provide a pre- and post-treatment urine sample. Language pertaining to patient consent for urine collection must be included in the consent form for the main study at these centres. The patient must sign this consent form prior to collection of the first urine sample.
• If being enrolled through a centre participating in the correlative science component of the study, patient consent for the saliva collection component of the trial must be obtained in the same manner as outlined above for the main study consent. The patient must sign the saliva collection Informed Consent form.
• Must be accessible for treatment and follow-up. Investigators must be reasonably assured that the patients randomized on this trial will be available for complete documentation of the treatment, adverse events, and follow-up.
• Protocol treatment is to begin within one week of patient randomization.

Exclusion Criteria:

• Patients with hematologic malignancies (leukemia, Hodgkin's or non-Hodgkin's lymphoma or plasma cell dyscrasia, including multiple myeloma) are ineligible as steroids constitute anti-cancer therapy for these malignancies.
• Concurrent use or use within previous seven days of any corticosteroid medication other than topical or inhaled preparations. Patients with any type of cancer who are receiving steroids as a component of their systemic therapy are ineligible. Patients requiring steroids for a co-existing medical problem are ineligible. Patients who received a one- to three-day dose of steroids as an antiemetic for chemotherapy treatment are eligible, as long as at least 72 hours have elapsed since the last dose of antiemetic therapy.
• Medical contraindications to corticosteroids such as uncontrolled diabetes mellitus, uncontrolled hypertension, active peptic ulcer or hypokalemia.
• Uncorrected hypokalemia that is known to exist within 7 days prior to randomization. Patients with previous hypokalemia that has been corrected are eligible. Hypokalemia is defined as a potassium level < 3.0 mmol/L. Testing of electrolytes, including potassium level, is not a protocol requirement.
• Random glucose level ≥ 13.9 mmol/L within 7 days prior to randomization.Testing of glucose within 7 days prior to randomization is a protocol requirement. Point of care testing with a glucometer is permissible.
• Pathological fracture of the femora, tibiae, fibulae, humeri, radii or ulnae at the site(s) to be followed for the study.
• Radiological evidence of high-risk lesions for pathological fractures in the femora, tibiae, fibulae, humeri, radii or ulnae at the site(s) to be followed for the study (lytic lesions > 3 cm or > 50% cortical erosion of bone diameter).
• Clinical or available radiologic evidence of spinal cord or cauda equina compression at the site(s) to be followed for the study.
• Plans to receive palliative radiotherapy to a site or sites other than the one(s) being followed for the study during the ten-day period following study radiotherapy.
• Planned orthopedic intervention, including kyphoplasty, vertebroplasty or cementoplasty, to any of the site(s) to be followed for the study.
• Prior palliative surgery to any of the site(s) to be followed for the study.
• Inability, with available translator assistance, to record pain score and medication consumption in the daily diary and to communicate this to study personnel.
• Receipt of radiopharmaceutical treatment at any time.
• Previous external beam radiotherapy (including hemibody radiotherapy) using a field that included the site(s) to be followed for the study.
• Inability to swallow or tolerate oral medications, e.g. due to intractable nausea and/or emesis.
• Plans to receive cytotoxic chemotherapy or systemic steroids during the on-study period (day of study radiotherapy and the subsequent ten days).
• Plans to start or stop systemic therapy other than cytotoxic chemotherapy (e.g. hormonal therapy; immunotherapy; bisphosphonates) during the on-study period (day of study radiotherapy and the subsequent ten days). Patients who are already receiving these types of treatments are eligible as long as no changes are planned during the study period.
• Regular use of a non-steroidal anti-inflammatory drug (NSAID). Patients must not be taking NSAIDs at randomization and their use during the on-study period (day of study radiotherapy and the subsequent ten days) must not be required or expected. Patients who use daily low-dose ASA for anti-platelet therapy are eligible if ASA has been used for more than one month prior to the time of randomization.
• Plans for a change in analgesic regimen on the day of randomization.
• Previous entry on the SC.23 study.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: Randomized
• Interventional Model: Parallel Assignment
• Masking: Double

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Active Comparator: Dexamethasone; 2 x 4 mg dexamethasone tablets taken once daily for 5 days	Drug: Dexamethasone; 2 x 4 mg dexamethasone (dex) tablets taken once daily for 5 days
Placebo Comparator: Placebo; 2 placebo tablets taken once daily for 5 days	Drug: Placebo; 2 placebo tablets taken once daily for 5 days; Other Names: Sugar pill

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Radiation-induced Pain Flare Incidence	The incidences of radiation-induced pain flare from the time of radiotherapy treatment to ten days after the completion of treatment	10 days

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Radiation-induced Pain Flare Incidence From Day 6 to Day 10 After Radiotherapy Treatment	Reduction in incidence of radiation-induced pain flare from Day 6 to Day 10 after radiotherapy treatment	From Day 6 to day 10 after radiotherapy treatment
Analgesic Use	Change in mean analgesic use from baseline to day 10.	10 days
Response to Radiation Treatment at Six Weeks	Response to radiation treatment at six weeks after treatment. Complete response (CR) is defined as a worst pain score of zero (0) at the bony metastatic site with no concomitant increase in analgesic intake (stable or reduced oral morphine equivalent dosage (OMED)). Partial response (PR) is defined as any of the following: i. Reduction in worst pain score of two or more at the bony metastatic site on a 0-10 scale without analgesic increase. ii. Analgesic reduction of 25% or more from baseline without an increase in worst pain score with reference to baseline. iii. For patients who were using opioid analgesics at the baseline assessment, a daily oral morphine equivalence of zero (0) without an increase in worst pain score relative to the baseline worst pain score	From day 0 to 6 weeks
Change in Pain Intensity Score Over 10 Days After Radiotherapy.	Change in pain score over 10 days after radiotherapy, pain score range from 0 (no pain) to 10 (worst pain as can imagine).	Pain intensity score change from baseline of day 0 to day 10 after radiation

Collaborators and Investigators

• Sponsor: NCIC Clinical Trials Group
• Investigators: Study Chair: Edward LW Chow, Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto ON; Study Chair: Carlo De Angelis, Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto ON; Study Chair: Alysa Fairchild, Cross Cancer Institute, Edmonton AB

Publications and helpful links

General Publications

• Chow E, Meyer RM, Ding K, Nabid A, Chabot P, Wong P, Ahmed S, Kuk J, Dar AR, Mahmud A, Fairchild A, Wilson CF, Wu JSY, Dennis K, Brundage M, DeAngelis C, Wong RKS. Dexamethasone in the prophylaxis of radiation-induced pain flare after palliative radiotherapy for bone metastases: a double-blind, randomised placebo-controlled, phase 3 trial. Lancet Oncol. 2015 Nov;16(15):1463-1472. doi: 10.1016/S1470-2045(15)00199-0. Epub 2015 Oct 18.
• Chow S, Ding K, Wan BA, Brundage M, Meyer RM, Nabid A, Chabot P, Coulombe G, Ahmed S, Kuk J, Dar AR, Mahmud A, Fairchild A, Wilson CF, Wu JSY, Dennis K, DeAngelis C, Wong RKS, Zhu L, Chow E. Gender differences in pain and patient reported outcomes: a secondary analysis of the NCIC CTG SC. 23 randomized trial. Ann Palliat Med. 2017 Dec;6(Suppl 2):S185-S194. doi: 10.21037/apm.2017.08.12. Epub 2017 Aug 29.
• McDonald R, Ding K, Brundage M, Meyer RM, Nabid A, Chabot P, Coulombe G, Ahmed S, Kuk J, Dar AR, Mahmud A, Fairchild A, Wilson CF, Wu JSY, Dennis K, DeAngelis C, Wong RKS, Zhu L, Chan S, Chow E. Effect of Radiotherapy on Painful Bone Metastases: A Secondary Analysis of the NCIC Clinical Trials Group Symptom Control Trial SC.23. JAMA Oncol. 2017 Jul 1;3(7):953-959. doi: 10.1001/jamaoncol.2016.6770.
• Raman S, Ding K, Chow E, Meyer RM, Nabid A, Chabot P, Coulombe G, Ahmed S, Kuk J, Dar AR, Mahmud A, Fairchild A, Wilson CF, Wu JSY, Dennis K, DeAngelis C, Wong RKS, Zhu L, Brundage M. Minimal clinically important differences in the EORTC QLQ-BM22 and EORTC QLQ-C15-PAL modules in patients with bone metastases undergoing palliative radiotherapy. Qual Life Res. 2016 Oct;25(10):2535-2541. doi: 10.1007/s11136-016-1308-4. Epub 2016 May 2.

Study record dates

Study Major Dates

• Study Start (Actual): May 30, 2011
• Primary Completion (Actual): May 25, 2015
• Study Completion (Actual): November 27, 2015

Study Registration Dates

• First Submitted: November 22, 2010
• First Submitted That Met QC Criteria: November 24, 2010
• First Posted (Estimated): November 25, 2010

Study Record Updates

• Last Update Posted (Actual): August 28, 2023
• Last Update Submitted That Met QC Criteria: August 3, 2023
• Last Verified: April 1, 2020

More Information

Terms related to this study

• Keywords: Symptom Control
• Additional Relevant MeSH Terms: Pathologic Processes; Neoplasms; Neoplasms by Site; Hematologic Diseases; Musculoskeletal Diseases; Neoplastic Processes; Bone Diseases; Neoplasm Metastasis; Bone Neoplasms; Bone Marrow Diseases; Physiological Effects of Drugs; Autonomic Agents; Peripheral Nervous System Agents; Anti-Inflammatory Agents; Antineoplastic Agents; Antiemetics; Gastrointestinal Agents; Glucocorticoids; Hormones; Hormones, Hormone Substitutes, and Hormone Antagonists; Antineoplastic Agents, Hormonal; Dexamethasone
• Other Study ID Numbers: SC23

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: NO

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No