Medication related osteonecrosis of the jaws associated with targeted therapy as monotherapy and in combination with antiresorptives. A report of 7 cases from the Copenhagen Cohort

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ObjectiveThe aim of this study was to report cases of medication-related osteonecrosis of the jaws (MRONJ) associated with targeted therapy (TT) with or without concomitant antiresorptive treatment, among the Copenhagen ONJ cohort, which includes all consecutive cases of MRONJ seen in Copenhagen.Study DesignWe retrospectively studied the treatment of 204 consecutive patients with MRONJ, seen between January 2010 and May 2016, to identify those associated with TT.ResultsWe detected 7 cases of MRONJ associated with TT (3.4%). Four patients received TT only, whereas 3 were concomitantly treated with bisphosphonates (n = 3) and/or denosumab (n = 3). The TT regimens included sunitinib (Sutent) (n = 1), everolimus (Afinitor) (n = 1), erlotinib (Tarceva) (n = 1), bevacizumab (Avastin) (n = 3), dasatinib (Sprycel) (n = 1) and imatinib (Glivec) (n = 1). The MRONJ stage included stages 1 and 2, and mean score on the visual analogue scale for pain in the jaw was 4.0.ConclusionsHealth care providers should be aware of the possibility of MRONJ associated with the TT agents sunitinib, everolimus, and dasatinib and uncommon cancer types, including renal cell carcinoma, non–small-cell lung cancer, glioblastoma, and leukemia, where MRONJ may also occur.

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