An interventional study of Hyperbaric oxygen treatment in Osteoradionecrosis, sponsored by Göteborg University. Status unknown at 2 sites in Sweden. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2021-06-22.
Sponsored by Göteborg University · Not applicable, Interventional, and Treatment
Osteoradionecrosis (ORN) is a severe delayed radiation-induced injury that can occur in patients whom have been subjected to radiotherapy for head and neck cancer. Hyperbaric oxygen treatment (HBO) is one treatment option. In Sweden it is used in some locations in combination to standard treatment which includes for example antibiotics, pain medication and surgery. There is still not sufficient evidence that this treatment is effective in this group of patients.
The primary aim of this study will be to evaluate HBO as a treatment for osteoradionecrosis in terms of slowing the progression of the disease, or at the best, cure the disease.
Radiotherapy (RT) is frequently used for treatment of head and neck cancer, in combination with surgery and chemotherapy. Although RT can improve the survival rate among head and neck-cancer patients, it has negative effects on the healthy tissue surrounding the tumour. Osteoradionecrosis (ORN) is a severe delayed radiation-induced injury that can occur in patients whom have been subjected to RT for head and neck cancer. ORN can occur within months to several years after radiotherapy. Symptoms can include pain, dysesthesia, halitosis (bad breath) exposed necrotic bone, infection, orocutaneous fistula and pathologic fractures. The mandible is the most common site affected by ORN, but other bones can be affected as well. ORN has earlier been treated with long-term antibiotics and surgery. Today the treatment is multidisciplinary and also includes local wound care, hyperbaric oxygen (HBO) and new medications for example Pentoxifylline, a vasodilator that also inhibits fibrosis, Tocopherol (Vitamin E), that reduces damage by free radicals, and Clodronate, a bisphosphonate that inhibits bone resorption.
Hyperbaric oxygen treatment (HBO) is an intervention in which the individual breathes near 100% oxygen intermittently while inside a hyperbaric chamber that is pressurized to above sea level pressure. By increasing the inspired partial pressure of oxygen (PO₂), with an increased O₂ fraction inspired and increased pressure, the amount of oxygen in blood can be increased. This also increases the distance that oxygen can diffuse from the capillaries into the tissues. HBO increase production of reactive oxygen and nitrogen species. This leads to neovascularisation by two processes: blood vessel growth by local endothelial cells (angiogenesis) and recruitment and differentiation of stem cells to form vessels "de novo" (vasculogenesis). HBO has also been shown to stimulate fibroblast proliferation and enhances collagen synthesis.
The primary aim of this study will be to evaluate HBO as a treatment for osteoradionecrosis in terms of slowing the progression of the disease, or at the best, cure the disease. As secondary aims for this study, the effect of HBO on pain, infection, mouth-opening capacity and quality of life will be evaluated.
The study will be a prospective study with matched controls evaluating the effect of HBO in comparison to standard care in patients with ORN stage 1-2b according to classification of Kagan and Schwartz. A total of 60 patients in each group will be included, which should be sufficient for statistical significance according to power calculations.
The patients will be enrolled into two groups. The first group of patients will receive HBO treatment. The treatment will be given in a multi or monoplace chamber pressurized to 2,4-2,5 ATA, 90 minutes from start to decompression, and the patients will be breathing 100 % oxygen. Treatment will be given once daily, five days a week. All patients will receive 30 treatments and if surgery is needed the patient will receive an additional 10 treatments postoperatively. All according to local routines for treatment of ORN with HBO. The control group will consist of a group of patients with the same diagnosis and same stage of ORN. These will be patients from a maxillofacial unit in Sweden not using HBO treatment or patients who decline the treatment. The controls will be matched based on sex, age, tumour-stage and RT. These patients will be treated with standard care and be subjected to surgery if needed.
Baseline visit will include clinical examination by an oral and maxillofacial surgeon and quality of life questionnaires developed and validated for head-and-neck cancer patients (EORTC QLQ C30 and H\&N35). The patients in the HBO group will also be examined by a doctor at the hyperbaric unit. Follow-up will be performed every third month during the first year. In total the patients will be followed for a period of four years, every sixth months the second and third year and then on a yearly basis from the third year and on if no need for more frequent controls exist. The follow-up will include clinical examination by an oral and maxillofacial surgeon, radiographies including CT-scan and quality of life questionnaires. This is according to established care program. Blood samples, and if the patient undergoes surgery, tissue samples, will also be collected to look at biomarkers for inflammation and bone turnover.
Primary end-point of the study is changes in the bone as well as the soft tissue surrounding the necrotic bone. Secondary end-points are improvements regarding pain, infection, mouth-opening capacity and quality of life scorings.
24 studies on the registry are indexed under Osteoradionecrosis; 8 are open to participants now.
This study's planned enrollment of 120 is above the median of 60 across 13 interventional studies indexed under Osteoradionecrosis.
Browse Osteoradionecrosis studies →Göteborg University is the lead sponsor of 270 studies on the registry; 46 are open to participants now.
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Exclusion Criteria:
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
The diagnosis was confirmed by looking at a sample under a microscope: tissue from a biopsy or surgery (histology), or cells from a fluid or needle sample (cytology).
Your pathology report is the document that shows this.
A scale of how much an illness limits everyday activity. For people being assessed to join a study, scores run from 0 (fully active) to 4; lower is more active.
Studies most often ask for 0–1 or 0–2. Your doctor gives the score; the WHO scale uses the same steps. The full scale also has 5, which records death.
A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.
Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.
Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.
Histologically or cytologically confirmed
The diagnosis was confirmed by looking at a sample under a microscope: tissue from a biopsy or surgery (histology), or cells from a fluid or needle sample (cytology).
Your pathology report is the document that shows this.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
ECOG performance status
A scale of how much an illness limits everyday activity. For people being assessed to join a study, scores run from 0 (fully active) to 4; lower is more active.
Studies most often ask for 0–1 or 0–2. Your doctor gives the score; the WHO scale uses the same steps. The full scale also has 5, which records death.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Contraindication
A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Contraception
Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.
Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
30 HBO treatments and standard care. If surgery is needed an additional 10 HBO treatments postoperative.
Procedure: Hyperbaric oxygen treatment
Standard care. Surgery if needed.
Hyperbaric oxygen treatment 90 min from start to start of decompression. The chamber is pressurized to 2,4 ATA and the patients will be breathing 100% oxygen. Treatments will be given once daily, five days a week (no treatments on weekends and holidays).
SH-index
Assessment of healing of soft and hard tissue using SH-index S0H0-S1H3, where lower scores are a better outcome and higher scores are worse. The classification is based on clinical examination of the soft tissue (S) and radiographies of the hard tissue (H).
Time frame: 1-4 years
Change in stage of osteoradionecrosis
Schwartz and Kagan 1a-3b, where 1 is a better outcome and 3b is worse.
Time frame: 1-4 years
Infection
3-grade scale
Time frame: 1-4 years
Transcutaneous perfusion measurement
Perfusion of blood in the affected area
Time frame: 1-4 years
Perceived pain
Visual Analog Scale (VAS) 0-10, where 0 is a better outcome an 10 is worse.
Time frame: 1-4 years
Mouth opening capacity
mm
Time frame: 1-4
Secretion of saliva
ml/min
Time frame: 1-4 years
Perceived quality of life
EORTC (European organisation for research and treatment of cancer) quality of life questionnaire (QLQ C-30). A system for evaluating quality of life in cancer patients. Score 0-100, where a higher value is a higher quality of life.
Time frame: 1-4 years
Perceived quality of life
EORTC (European organisation for research and treatment of cancer) quality of life questionnaire (QLQ H\&N35). A system for evaluating quality of life in patients with head and neck cancer. Score 0-100, where a higher value means more symptoms.
Time frame: 1-4 years
Alkaline phosphatase
An increased value indicates an increase in bone metabolism
Time frame: 1-4 years
Plan to share: No
No publications or documents are linked to this record.
Started Mar 2019 (actual). Primary completion is estimated for Mar 2024, 60 months after the start.
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This study is status unknown, as verified in Jun 2021. You cannot join it, but the record below documents what was studied.
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