Efficacy of photobiomodulation for the prevention and treatment of chemotherapy-induced oral mucositis in pediatric patients with hematologic cancers: a randomized clinical trial.
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BACKGROUND: Oral mucositis (OM) is a debilitating treatment-related complication that affects most children undergoing chemotherapy. This dual-arm clinical trial aimed to evaluate the efficacy of photobiomodulation (PBM) for prevention and photodynamic therapy (PDT) using indocyanine green (ICG) and low-level laser for treating methotrexate (MTX)-induced OM in pediatric patients with hematologic cancers. METHODS: In the prevention arm, patients were initially assigned to a control group (received no laser) and subsequently reassigned to a PBM group in their next cycle, allowing intra-patient comparison under similar chemotherapy protocols. In the treatment arm, patients diagnosed with OM were randomly assigned to either a control group (sham laser) or a PDT group. RESULTS: In the prevention arm, PBM led to a significant reduction in the incidence of OM from 66.67% to 6.67% (p < 0.05). In the treatment arm, the PDT group showed a significant reduction in the scores of all scales (WHO, NCI, and WCCNR) at both 3 days and 5 days after starting the treatment compared to the control group (p < 0.05). Moreover, the reduction in the NCI score from the third to the fifth days after the starting treatment is higher in the PDT group compared to the control group (p < 0.05). CONCLUSION: PBM appears to be a safe and effective approach for the prevention of MTX-induced OM in pediatric patients with hematologic cancers. Additionally, PDT using ICG and a low-level laser demonstrates promising results in treating OM lesions. Therefore, these findings highlight the efficacy of PBM for managing MTX-induced OM in this patient group. TRIAL REGISTRATION: The study has been registered on irct.behdasht.gov.ir on 4 December 2022 (Trial Registration Number: IRCT20120101008585N16).