Background: Among a sample of patient-informal caregiver dyads in the specific context of new diagnoses of high-grade glioma in the time-frame between diagnosis and the third month following diagnosis, we examine whether the coping strategies implemented by the patients and their caregivers influenced their own quality of life (QoL) and the QoL of their relatives.; Methods: Thirty-eight dyads with patients having recent diagnoses of high-grade glioma were involved in this longitudinal study.