Family involvement in cancer treatment decision-making: A qualitative study of patient, family, and clinician attitudes and experiences

•Family are often involved in decision-making- researching treatments, asking questions, being a sounding board.•Family involvement in decision-making may start before, and continue after, the consultation.•Family influence over the decision varies on a spectrum from passive to dominant.•While family needs were considered important, the needs and preferences of the patient were paramount for most.•Many factors may influence level of family involvement- patient, family, cultural, relationship, decisional.