Home/Get Matched/NCT06055257
Phase 3Recruiting
View on ClinicalTrials.gov

Testing modified PENTOCLO (mPENTOCLO) against a placebo for osteoradionecrosis

Official title: Combination Therapy: Hyperbaric Oxygen and PENTOCLO for Treatment of Osteoradionecrosis of the Mandible

Combination Therapy: Hyperbaric Oxygen and PENTOCLO for Treatment of Osteoradionecrosis of the Mandible, a Pilot Randomized Control Trial

Condition: OsteoradionecrosisSponsor: Sunnybrook Health Sciences CentreTarget enrollment: 24
  • Phase 3
  • 2 groups
  • One site, in Toronto
  • Recruiting
Sunnybrook Health Sciences Centre, Toronto, Ontario

Interventions

  • Medication

    modified PENTOCLO (mPENTOCLO)

    4-week "pre-treatment" phase consisting of 2 g daily of Amoxicillin+Clavulanic acid 875/125 mg (1 g morning and night), 1 g ciprofloxacin (500 mg morning and night) and 50 mg Fluconazole daily (morning), taken orally by the patient. This is followed by an additional 11 months (12 months total) "treatment" phase consisting of 800 mg pentoxifylline (400 mg morning and night) and 800 IU tocopherol (400 IU morning and night) taken orally 5 days per week (Monday to Friday with no medications on Saturday and Sunday). If the patient deteriorates (i.e., worsening of ORN T 6 or 9-month follow-up) then clodronate 1600 mg once daily (Monday to Friday) for the rest of the study period will be added.

  • Medication

    sham mPENTOCLO

    4-week "pre-treatment" phase consisting of 2 g daily of Amoxicillin+Clavulanic acid 875/125 mg (1 g morning and night), 1 g ciprofloxacin (500 mg morning and night) and 50 mg Fluconazole daily (morning), taken orally by the patient. This is followed by an additional 11 months (12 months total) of sham "treatment" phase (placebo).

Canadian Sites (1)

1 of 1 recruiting

  • Sunnybrook Health Sciences Centre

    Toronto, Ontario

    Recruiting

Eligibility Criteria

See who this study is looking for26 criteria

The trial’s own eligibility text, word for word from the registry. Only the trial site can say who takes part.

Inclusion

  • +Diagnosis of mandibular ORN after completion of radiotherapy
  • +ORN will be defined as "an area of exposed devitalized irradiated bone (\> 20 mm2)"; minor bone spicules (MBS) (\< 20 mm2) in the absence of radiographic abnormality, will be considered clinically insignificant
  • +Has no contraindications for undergoing hyperbaric oxygen therapy as assessed by a Hyperbaric Physician, and is willing to commit the time to undergo 60 sessions
  • +BaselineBaselineYour starting measurements, taken before treatment begins.Read more → in-date ECG (within 60 days prior to enrolmentEnrolmentThe number of participants a study plans to include, or has included.Read more →)
  • +Negative Human Chronic Gonadotropin (hCG) screeningScreeningThe checks done before joining, to see whether a study fits.Read more → test at baseline (for female patients of reproductive age not practicing medically acceptable methods of birth controlControl groupThe group a new treatment is measured against.Read more → (e.g., hormonal contraceptives, implants, injectables, intrauterine device (IUD), intrauterine system (IUS), vasectomy and bilateral tubal ligation)

Exclusion

  • Patients on medication with a potential but low risk of QTc prolongation (e.g., ondansetron, SSRIs) may be included if a post-initiation ECG conducted within 24-48 hours of starting ciprofloxacin or fluconazole confirms that there is no significant QTc prolongation
  • Patients diagnosed with retinitis pigmentosa
  • Inability to give informed consentInformed consentThe process of being told what taking part involves, then choosing freely.Read more →
  • Major surgical procedure planned (more extensive than sequestrectomy)
  • Severe trismus and inability to obtain intraoral photographs
  • Contraindications for HBOT: pneumothorax, bullous disease, uncontrolled hypertension, uncontrolled epilepsy, claustrophobia
  • Known QT prolongation as documented on an in-date ECG (within 60 days prior to enrolmentEnrolmentThe number of participants a study plans to include, or has included.Read more →) are excluded. Patients with the QTc prolongation associated with a correctable cause (e.g., electrolyte imbalance or drug-induced), and corrected QTc prior to enrolment into the study as documented on 12 lead ECG will be eligible for inclusionInclusion criteriaThe things you must have or be for a study to consider you.Read more →
  • Patients requiring concurrent use of medications known to significantly prolong the QT interval with a high risk of clinical impact (e.g., erythromycin, cisapride, astemizole, pimozide or quinidine) are excluded unless safe discontinuation or substitution of these medications is feasible prior to initiation of the study
  • History of cholestatic jaundice/hepatic dysfunction associated with amoxicillin-clavulanate
  • Moderate to severe active liver disease (class B or C Pugh-Child Score) or active liver disease with significant acute elevation of LFT values
  • History of myasthenia gravis
  • Patients with a history of nontraumatic tendon disorders with severe functional impairment (i.e., significant swelling of the affected tendon, or partial tendon tear documented on clinical examination or imaging)
  • Patients who have previously experienced peripheral neuropathy due to exposure to antibiotics
  • Persistent or recurrent cancer and active neoplastic pathology will be excluded
  • Patients with documented Vitamin K deficiency
  • Patients taking additional Vitamin E
  • Patients with concomitant prescription of anti-resorptive or anti-angiogenic medications (e.g. risedronate, alendronate, aIbandronate, zoledronic acid, pamidronate, etidronate or prescription of denosusamab, etc.)
  • Patients diagnosed with clinically significant anemia
  • Contraindications to mPENTOCLO (inability to swallow medication; pregnancy or lactating; allergy to any study drug; currently on oral anticoagulants; hemorrhagic/coagulation disorder; Vitamin K deficiency; active unresolved cardiac disease; severe liver or kidney disease (CrCl\<30 mL/min))
  • Previous treatment for ORN (PENTOCLO, HBOT or surgery)
  • Smokers, high alcohol intake (average of \>2 standard drinks per day), sepsis, severe undernourishment and severe immunodeficiency conditions (e.g. HIV, autoimmune disease, immune-compromised)
5 concepts to explore on this page · up to 1,300 pointsTap any term to learn what it means.

In plain language

Assembled directly from this trial’s registry record. Every sentence traces to a field below — nothing here is generated or interpreted.

Learning 
What this study is

This study is testing a treatment for a condition.

Phase 3Phase 3A large study comparing a treatment against the current standard.Read more → — a large study comparing this against the current standard, usually across many hospitals.

From the trial registry

Built from these fields:

  • designModule.designInfo.primaryPurpose
  • designModule.phases
Who receives what

There are 2 groups in this study.

Group A, the placeboPlaceboA dummy treatment with no active medicine, used for comparison.Read more → group, receives shamSham procedureA procedure made to feel like the real one, without the active step.Read more → mPENTOCLO.

Registry label: A: Group 1 (Control)

Group B receives modified PENTOCLO (mPENTOCLO).

Registry label: B: Group 2 (Intervention)

From the trial registry

Built from these fields:

  • armsInterventionsModule.armGroups[].label
  • armsInterventionsModule.armGroups[].type
  • armsInterventionsModule.armGroups[].interventionNames
How the study is run

Which group you would be placed in is decided by chance, like a coin flip — not by you and not by your doctor.

You, the study team, and the people analysing the results would all be kept unaware of which group you are in until the study ends.

From the trial registry

Built from these fields:

  • designModule.designInfo.allocation
  • designModule.designInfo.maskingInfo.masking
Is there a placebo?

One group receives a placeboPlaceboA dummy treatment with no active medicine, used for comparison.Read more → — a dummy treatment with no active medicine in it.

From the trial registry

Built from these fields:

  • armsInterventionsModule.armGroups[].type
  • armsInterventionsModule.armGroups[].interventionNames
Who the study is looking for

The study is open to people of any sex.

The study does not accept healthy volunteersHealthy volunteerSomeone without the condition being studied who takes part anyway.Read more →.

These are the criteria the study lists. Only the trial siteTrial siteA hospital or clinic where a study is actually run.Read more → can decide whether someone can take part.

From the trial registry

Built from these fields:

  • eligibilityModule.sex
  • eligibilityModule.healthyVolunteers
How big and how long

The study aims to enrol about 24 people.

The study is currently expected to finish around December 2027.

The main measurement is taken over: Pilot study (including 12-month follow-upFollow-upContinued check-ins after the treatment part is finished.Read more →).

From the trial registry

Built from these fields:

  • designModule.enrollmentInfo.count
  • statusModule.completionDateStruct.date
  • outcomesModule.primaryOutcomes[].timeFrame
What the study measures

Recruitment and adherence to protocolProtocolThe detailed plan a study must follow.Read more → (process) — measured over Pilot study (including 12-month follow-upFollow-upContinued check-ins after the treatment part is finished.Read more →).

Recruitment and adherence to protocol (process) — measured over Pilot study (including 12-month follow-up).

Recruitment and adherence to protocol (process) — measured over Pilot study (including 12-month follow-up).

Recruitment and adherence to protocol (process) — measured over Pilot study (including 12-month follow-up).

The study lists 3 further main measurements.

From the trial registry

Built from these fields:

  • outcomesModule.primaryOutcomes[].measure
  • outcomesModule.primaryOutcomes[].timeFrame

Source: NCT06055257 on ClinicalTrials.gov. The full registry text is further down this page — this summary never replaces it.

Not medical advice. What do these terms mean?

What is being tested — in plain terms

About modified PENTOCLO (mPENTOCLO)Drug

4-week "pre-treatment" phase consisting of 2 g daily of Amoxicillin+Clavulanic acid 875/125 mg (1 g morning and night), 1 g ciprofloxacin (500 mg morning and night) and 50 mg Fluconazole daily (morning), taken orally by the patient. This is followed by an additional 11 months (12 months total) "treatment" phase consisting of 800 mg pentoxifylline (400 mg morning and night) and 800 IU tocopherol (400 IU morning and night) taken orally 5 days per week (Monday to Friday with no medications on Saturday and Sunday). If the patient deteriorates (i.e., worsening of ORN T 6 or 9-month follow-up) then clodronate 1600 mg once daily (Monday to Friday) for the rest of the study period will be added.

From the trial registry — its own words, unedited.

What a drug is here: A medicine — a chemical or small-molecule treatment — given as the thing being studied.

Read the full explanation → · in clinical review

About sham mPENTOCLODrug

4-week "pre-treatment" phase consisting of 2 g daily of Amoxicillin+Clavulanic acid 875/125 mg (1 g morning and night), 1 g ciprofloxacin (500 mg morning and night) and 50 mg Fluconazole daily (morning), taken orally by the patient. This is followed by an additional 11 months (12 months total) of sham "treatment" phase (placebo).

From the trial registry — its own words, unedited.

What a drug is here: A medicine — a chemical or small-molecule treatment — given as the thing being studied.

Read the full explanation → · in clinical review

Common questions

Answered from this trial’s registry record. Where the record doesn’t say, these answers say so rather than filling the gap.

Am I eligible for this trial?

Only the trial siteTrial siteA hospital or clinic where a study is actually run.Read more → can decide whether someone can take part. Concord cannot make that determination, and neither can any tool that has not examined you.

The full inclusionInclusion criteriaThe things you must have or be for a study to consider you.Read more → and exclusion criteriaExclusion criteriaThe things that would prevent someone from taking part.Read more → are published on this page, exactly as the study team wrote them.

The useful next step is to bring this trial to your doctor. Answering a few questions first gives them something concrete to review.

From the trial registry
  • eligibilityModule.eligibilityCriteria
Is there a placebo?

Yes. This study includes a placeboPlaceboA dummy treatment with no active medicine, used for comparison.Read more → group — a dummy treatment with no active medicine in it.

From the trial registry
  • armsInterventionsModule.armGroups[].type
Would I know which treatment I am getting?

You, the study team, and the people analysing the results would all be kept unaware of which group you are in until the study ends.

Which group you would be placed in is decided by chance, like a coin flip — not by you and not by your doctor.

From the trial registry
  • designModule.designInfo.maskingInfo.masking
  • designModule.designInfo.allocation
Who can join?

It is open to people of any sex.

It does not accept healthy volunteersHealthy volunteerSomeone without the condition being studied who takes part anyway.Read more →.

Only the trial siteTrial siteA hospital or clinic where a study is actually run.Read more → can confirm whether a particular person can take part.

From the trial registry
  • eligibilityModule.sex
  • eligibilityModule.healthyVolunteers
How long would this take?

The study's main measurement is taken over: Pilot study (including 12-month follow-upFollow-upContinued check-ins after the treatment part is finished.Read more →).

The study as a whole is currently expected to finish around 2027-12.

How long any one person takes part can differ from the study length. The study team can tell you what the schedule looks like in practice.

From the trial registry
  • outcomesModule.primaryOutcomes[].timeFrame
  • statusModule.completionDateStruct.date
How many people are taking part?

The study aims to enrol about 24 people.

From the trial registry
  • designModule.enrollmentInfo.count
Where is this happening?

This study lists one location: Toronto, Ontario, Canada.

Sites can open and close during a study, so confirm with the team before travelling.

From the trial registry
  • trial_locations

About This Trial

Radiation is commonly used to treat cancer in the head and neck, however, this can lead to a serious complication called osteoradionecrosis (ORN), where there is necrotic (dead) open bone inside or outside of the mouth. This complication is difficult to treat, involves large healthcare costs, and can have devastating effects on quality of life. Two common adjuncts used in treatment of ORN are hyperbaric oxygen therapy (HBOT), which may requires up to 60 treatments at a specialized clinic where patients are treated with high concentrations of oxygen using special chambers, and a less complex option called PENTOCLO which involves treating patients with several antibiotics followed by a combination of other oral medications taken for at least 1 year. This pilot study will be guide the design of a definitive trial to examine if the combination of HBOT and a modified PENTOCLO protocol together is better than the current standard treatment of HBOT alone. Outcomes will include pain, side effects and the need for surgery in patients with ORN. Specifically, the results of this small, pilot study will help to inform the design of a future larger study.

Think this trial might be right for you?

Complete a quick intake form and we will match you with this and other relevant trials based on your medical profile.

See if this trial could fit you

This page is for informational purposes only and does not constitute medical advice. Clinical trial eligibility can only be determined by the trial site after proper screening. Trial information is sourced from ClinicalTrials.gov and may not reflect the most current status. Always consult your healthcare provider before making decisions about clinical trial participation.