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HBOT Late Radiation Tissue Injury

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Know the risks and potential benefits of clinical studies and talk to your health care provider before participating. Read our disclaimer for details. Identifier: NCT02425215
Recruitment Status : Recruiting
First Posted : April 23, 2015
Last Update Posted : May 17, 2019
Information provided by (Responsible Party):
University Health Network, Toronto

Brief Summary:

Background: Radiotherapy is a common treatment for many malignancies. Radiation-related complications developing months or years after radiation treatment are known as late radiation tissue injury (LRTI) and are estimated to effect 5%-15% of all long-term survivors who have received radiation.

Hyperbaric oxygen therapy (HBOT) is a well established treatment of LRTI. Most of the studies evaluating effect of HBOT on LRTI are focused on survival, resolution of tissue damage and improvement in LENT-SOMA scale. Very few studies have addressed effect of HBOT on pain in LTRI. Krahn and colleagues were the first to report the analgesic effect of HBOT in 3 cases of refractory pain in oncological patients with radiation soft tissue injury. Other studies showed significant improvement in pain intensity in patients with breast cancer and pelvic malignancies treated with HBOT for LTRI. In patients that had developed radiation- induced brachial plexopathy, HBOT elicited an increase in warm pain thresholds and a reduction in lymphoedema. A prospective case study of 16 patients with gynecological cancer found no changes with respect to pain and depression outcomes. A trial in patients with radiation induced proctopathy showed that 75% of patients with rectal pain had some improvement, although none experienced a complete resolution of pain symptoms.

There are several mechanisms by which HBOT may elicit analgesic effects. There is a growing body of evidence that HBOT's analgesic effect related to nitric oxide metabolism and endogenous opioid secretion. Furthermore, the inhibition of tumor necrosis factor alph (TNF-α), the production of substance P, and the modulation of serotonergic pathways have all demonstrated a modification in the pain response following HBOT. In animal studies HBOT decreased allodynia and hyperalgesia in different models of neuropathic and inflammatory pain. The long lasting antinociceptive effect of HBOT was found to be dose-dependent in non-injured tissues.

In human studies, HBOT decreased pain and edema and improved function in patients suffering from the complex regional pain syndrome, and improved pain scores and range of motion in patients with idiopathic femoral head necrosis. Women suffering from interstitial cystitis demonstrated a reduction in pelvic pain following weeks and months of HBOT treatment. In patients suffering from idiopathic trigeminal neuralgia HBOT produced a rapid reduction in symptoms and these effects were lasting for 6 months following treatment. HBOT was also found to be an effective treatment for cluster headaches and migraines and alleviated muscle and bone pains in patients with myofascial syndrome, fibromyalgia, and biphosphonate-related osteonecrosis of the jaw.

Based on the evidence presented above and HBOT's known analgesic effect in many conditions, the investigators designed this study with the objective to evaluate if HBOT reduces pain, improves depression and impacts on patients quality of life in patients suffering from late radiation tissue injury.

Study Design: Prospective observational study (n=300). Patients that have had radiation therapy for malignancy, developed late radiation injury and suffer from chronic pain.

Condition or disease
Late Radiation Injury Chronic Pain

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Study Type : Observational
Estimated Enrollment : 300 participants
Observational Model: Cohort
Time Perspective: Prospective
Official Title: Does Hyperbaric Oxygen Therapy (HBOT) Reduce Pain, Improve Depression and Impact on Patients' Quality of Life for Those Suffering From Late Radiation Tissue Injury?
Study Start Date : June 2014
Estimated Primary Completion Date : September 2020
Estimated Study Completion Date : December 2020

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Chronic Pain

Primary Outcome Measures :
  1. Pain Intensity (11 point numeric rating scale, Brief Pain Inventory short form ) [ Time Frame: 6 months post-treatment ]

    Pain will be assessed with the 11 point numeric rating scale (NRS; 0 = "no pain" to 10 = "unbearable pain").Patients will be asked to document their pain during the previous 24 hours daily upon awakening and immediately after the intervention. Daily and weekly mean pain scores and the proportion of responders, defined as patients with a ≥30% reduction in mean pain score from baseline to endpoint will be recorded.

    The Brief Pain Inventory short form will also be administered.

Secondary Outcome Measures :
  1. Pain Disability (pain disability index) [ Time Frame: 6 months post-treatment ]
    Will be measured using the pain disability index (PDI). The tool is valid and reliable instrument widely used to assess chronic pain patients in research and clinical settings.

  2. Quality of Life Measurement (EORTC QLQ C30) [ Time Frame: 6 months post-treatment ]
    Will be assessed with the European Organization for Research and Treatment of Cancer Quality of life Questionnaire (EORTC QLQ C30). The EORTC QLQ-C30 is a self administered questionnaire developed to assess the quality of life of cancer patients. It has been translated and validated into 81 languages and is used in more than 3,000 studies worldwide. It is composed of both multi-item scales and single item measures.These include 5 functional scales (physical functioning, role functioning, emotional functioning, cognitive functioning, and social functioning), 3 symptom scales (fatigue, nausea and vomiting, and pain), and 6 single items (dyspnoea, insomnia, appetite loss, constipation, diarrhoea, and financial difficulties).

  3. The Patient Global Impression of Change [ Time Frame: 6 months post-treatment ]
    The scale has been recommended by Initiatives on Methods, Measurement, and Pain Assessment in Clinical Trials (IMMPACT) to evaluate the efficacy of treatment in chronic pain trials. It assesses global response to treatment and uses a 7-point Likert scale that varies from 1 (very much improved) to 7 (very much worse).

  4. Depression and Anxiety (Hospital Anxiety (HADS-A) and Depression (HADS-D) scale) [ Time Frame: 6 months post-treatment ]
    Depression and anxiety will be assessed with the Hospital Anxiety (HADS-A) and Depression (HADS-D) scale, consisting of 14 items (7 each for anxiety and depression).

  5. Pain medications [ Time Frame: 6 months post-treatment ]
    Change of pain medications.

Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.

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Ages Eligible for Study:   18 Years and older   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Sampling Method:   Non-Probability Sample
Study Population
All patients undergoing hyperbaric oxygen therapy for delayed radiation tissue injury in the Hyperbaric Unit.

Inclusion Criteria:

  • Patients who had radiation therapy, developed late radiation tissue injury and are eligible for hyperbaric oxygen therapy.
  • Pain ≥ 5 in any anatomic site with duration > 3 months

Exclusion Criteria:

  • Patient refusal
  • Patient inability to answer the questionnaires

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT02425215

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Contact: Rita Katznelson, MD 416-340-4800 ext 2840

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Canada, Ontario
University Health Network Recruiting
Toronto, Ontario, Canada, M5G 2C4
Sponsors and Collaborators
University Health Network, Toronto
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Responsible Party: University Health Network, Toronto Identifier: NCT02425215    
Other Study ID Numbers: 14-7413-BE
First Posted: April 23, 2015    Key Record Dates
Last Update Posted: May 17, 2019
Last Verified: May 2019
Keywords provided by University Health Network, Toronto:
Hyperbaric Oxygen Treatment
Late radiation injury
Quality of Life
Chronic Pain
Additional relevant MeSH terms:
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Chronic Pain
Radiation Injuries
Wounds and Injuries
Neurologic Manifestations
Signs and Symptoms