BACKGROUND: There are increasing numbers of cancer patients with brain metastases, and there is a high potential for caregiving burden. Little work has explored caregiving responsibilities and psychosocial well-being in informal family caregivers (FCGs) of cancer patients with brain metastases. This study aimed to address this gap in the literature. METHODS: Data were drawn from baseline pilot study data. Caregivers completed demographic information and provided a self-report of their caring responsibilities and psychosocial well-being via questionnaire.