Participant experiences in phase I pediatric oncology clinical trials

Abstract

Phase I clinical trials (P1Ts) are the first step in testing new medical therapies in humans, and are essential for developing new and innovative therapies for children with cancer. P1Ts are ethically controversial as they are not intended to directly benefit participants, but are particularly controversial for children with cancer who are only able to participate when there is no known curative therapy for their cancer. Benefits of pediatric oncology P1T participation may include improved quality of life (QOL) and hope. Risks may include fostering unrealistic hope, burdening children with additional medical procedures and toxicities, and limiting the opportunity for palliation. The goal of this dissertation was to investigate the P1T participation experience for children with cancer and their parents by: (1) assessing what is currently known about the participation experience, (2) exploring ways to understand and assess treatment burden and QOL during participation, and (3) interviewing parents about the experience of having a child participate in a P1T. Following a review of the literature, two studies were conducted: a longitudinal pilot study of 13 parent and child dyads who enrolled in a pediatric oncology early phase clinical trial at the recruiting institution, and a phenomenological study of 11 parents of children with cancer who participated in pediatric oncology P1Ts. Key findings included a dearth of research on the experiences of children and parents in pediatric oncology P1Ts. Instead, existing research has focused on consent processes. The longitudinal pilot study provided some insight into experiences of children and parents during trial participation, including that there may be time points when parents’ and children’s perceptions of the child’s quality of life substantively differ. Interviews with parents confirmed some of the anticipated benefits and risks of participation in P1Ts, and highlighted parents’ sense of running out of time to find an effective treatment and needing to use time they have with their child well. Specific challenges in conducting this research were participant attrition due to disease progression and the need for multi-site research to obtain an adequate sample.