“…Across the cancer care continuum, PS has emerged as an important strategy to address many barriers to cancer prevention [28], early detection [29,30], treatment [22,31], and survivorship [31,22]. Peer supporters often work with patients and/or health care providers to address system-level barriers, such as fragmented care, financial constraints, other practical challenges (e.g., transportation, employment concerns, child care), and communication difficulties [32,25].…”