BackgroundPatients are affected by various symptoms after allogeneic hematopoietic stem cell transplantation (allo-HSCT) that can affect recovery. Research has mainly focused on symptom occurrence; thus, little is known about patients’ overall symptom burden.ObjectiveThe aim of this study was to examine patient-reported symptom burden in the first year after allo-HSCT and whether a high symptom burden 4 months after allo-HSCT predicts recovery, that is, general health and sick leave, 1 year after transplantation.MethodsAllo-HSCT patients aged 18 to 65 years were included (n = 189). Questionnaire data were collected on admission to the allo-HSCT unit, as well as 4 and 7 months and 1 year after allo-HSCT. Logistic regression evaluated relationships between demographic characteristics, chronic graft-versus-host disease, physical activity, and a high symptom burden.ResultsTiredness, susceptibility to infection, disinterest in sex, and physical weakness remained the most frequent symptoms, while distressing symptoms varied during the first year after allo-HSCT.Poor general health 1 year after allo-HSCT was associated with older age, low physical activity, and a high symptom burden 4 months after allo-HSCT. Full-time sick leave 1 year after allo-HSCT was associated with chronic graft-versus-host disease, low physical activity, and a high symptom burden 4 months after transplantation.ConclusionsExperiencing a high symptom burden 4 months after allo-HSCT can affect recovery 1 year after transplantation. Furthermore, low physical activity 4 months after allo-HSCT can predict both general health and sick leave 1 year after transplantation.Implications for PracticeRepeated symptom assessment, including experienced distress, is central for reducing overall symptom burden and supporting recovery after allo-HSCT.