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  • Title: Treatment of oral graft-versus-host disease with intraoral nbUVB phototherapy.
    Author: Choi E, Lenga M, Nguyen CV, Zheng L, Froelich A, Centanni E, Choi JN.
    Journal: Support Care Cancer; 2024 Jun 17; 32(7):438. PubMed ID: 38880860.
    Abstract:
    PURPOSE: There are limited treatment options available for hematopoietic stem-cell transplant patients (HSCT) with oral graft-versus-host disease (GVHD). Intraoral phototherapy is a novel, yet promising therapeutic regimen. RESEARCH QUESTION: To assess the safety and effectiveness of intraoral narrowband UVB (nbUVB) phototherapy in the treatment of oral GVHD. METHODS: This case series evaluated 10 patients with refractory oral GVHD, who were treated at Northwestern Memorial Hospital with nbUVB between July 2019 and October 2023. Primary outcomes were to evaluate the safety and efficacy of phototherapy. Efficacy was measured by objective improvement in symptom scores and subjective improvement in patient reported symptoms. Safety was determined by the withdrawal due to adverse events. Total nbUVB exposure, number of treatments, and change in systemic immunosuppressive medications were also examined. RESULTS: The study cohort comprised 10 patients who developed oral GVHD at a median of 9.5 months after HSCT. The total median dose of nbUVB was 36 J/cm2, and the median number of sessions was 55. All 10 patients demonstrated some degree of improvement in symptoms. Notably, there was a reduction in the number of patients who reported symptoms of oral pain (83%), bleeding (67%), xerostomia (50%), and oral sensitivity (78%) after initiating phototherapy. There was also a statistically significant decrease in the levels of pain, erythema, and edema (p ≤ 0.001, < 0.001, 0.01, respectively). Most patients tolerated phototherapy well, but 1 patient withdrew from treatment due to adverse effects. Seventy-five percent of patients who were on immunosuppressive medications were able to decrease or stop these medications. CONCLUSION: This case series suggests that nbUVB phototherapy is well tolerated and efficacious in patients with oral GVHD.
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