Risk factors and implications of oral mucositis in recipients of allogeneic hematopoietic stem cell transplantation

Background Oral mucositis (OM) is a common toxicity of stem cell transplantation (SCT). We sought to evaluate OM burden, risk factors, and implications in a cohort of allogeneic‐SCT recipients. Methods This was a single‐center study including 115 adult allogeneic‐SCT transplanted between 2016 and 2018 for various hematological conditions. Conditioning intensity was categorized as myeloablative (MAC, 39%), reduced intensity (34%), or reduced toxicity (RTC, 27%) in patients conditioned with fludarabine‐treosulfan. OM was prospectively graded using the Common Terminology Criteria for Adverse Events (v.4.0) system. Results Moderate‐to‐severe OM (grade 2‐4) was experienced by 60% of patients. In a univariate analysis, younger age (P = .023), lower body mass index (P = .01), recent smoking (P = .08), recent antibiotics exposure (P = .018), MAC (P