The PENTO Protocol in Medication-related Osteonecrosis of the Jaw

Recruiting now · Phase 2

Conditions studied: Medication-related Osteonecrosis of the Jaw (MRONJ)

In brief

Medication-related osteonecrosis of the jaw (MRONJ) occurs after taking bisphosphonates or targeted therapies. It leads to a significant decrease in quality of life with pain, eating and chewing disorders, and malnutrition. Current treatments are only partially effective. PENTO (pentoxifylline and tocopherol) has been shown to be effective in maxillary osteoradionecrosis. The objective of this study is to evaluate the proportion of bone recovery in patients receiving PENTO in MRONJ at 12 months.

Key facts

Study ID

NCT05795647

Run by

University Hospital, Limoges

People needed

17

Starts

2024-02-29

Expected to finish

2028-04-07

Last updated by the study team

2026-06-24

Who can join

Age: 18 and older. Sex: any. Healthy volunteers: not accepted.

You may qualify if…

• Age greater than or equal to 18 years
• Current or past treatment with bisphosphonates (oral or IV) and/or targeted therapies (denosumab, bevacizumab)
• Signs and symptoms for more than 8S with confirmation that the signs and symptoms are not of dental origin
• AAOMS Stage 2 MRONJ
• For patients of childbearing age, effective contraception is required

You may not qualify if…

• History of head or neck radiotherapy or maxilla metastases
• Patients who have received treatment in the past (PENTO or PENTOCLO protocol)
• Patients who have undergone surgery for their MRONJ within the last 3 months
• Pregnant or wishing to be pregnant, breastfeeding
• Patient under palliative care
• Patient with hypersensitivity to pentoxifylline or tocopherol or to an excipient
• History of hypersensitivity reaction to penicillins, cephalosporins, or other beta-lactams (and clindamycin or lincomycin if applicable) or excipient of amoxicillin-a. clavulanic or clindamycin
• History of jaundice/hepatic injury related to amoxicillin/clavulanic acid
• Patient taking oral anticoagulants, or with a history of major bleeding or bleeding disorders
• Patient taking platelet aggregation inhibitor, theophylline or aminophylline
• Patient taking methotrexate, probenecid, mycophenolate mofetil, myorelaxant drugs, macrolide or streptogramin antibiotics
• Patients with hepatic failure or renal failure (Cl < 30 mL/min),
• Patient with hypotension (SBP < 90 mmHg)
• Refusal to participate in the study
• Patient participating in other interventional research that may interfere with the conduct of this research
• Patient unable to understand the protocol
• Patient under curatorship or guardianship

Where it is running

• Limoges university hospital — Limoges, France (enrolling)

Full record on ClinicalTrials.gov

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