Moving Toward an Evidence-Informed Cancer Control Strategy: A Scoping Review of Oncology Research in Kenya

Abstract

PURPOSE In 2017, the Kenya Ministry of Health launched the National Cancer Control Strategy 2017 to 2022. A scoping review of oncology research in Kenya was conducted to understand the scope of—and gaps in—existing research and inform the development of the national cancer research agenda. METHODS We searched PubMed/MEDLINE, Embase, Scopus, and Global Health databases using controlled vocabulary and keywords to identify oncology research with a study site in Kenya, published in English, from 2007 to 2017. Fifteen journals and additional gray literature sources were hand searched. Screening of titles, abstracts, and full text was completed by pairs of 2 reviewers, with a third reviewer reconciling discrepancies. From included studies, data were extracted and coded using Google Forms. Microsoft Excel was used for descriptive statistics. RESULTS Of the 284 included articles, a majority were analytic observational studies (66.9%). The top 5 cancers studied were cervical cancer (n = 106; 35.9%), breast cancer (n = 25; 11.9%), Burkitt lymphoma (n = 23; 8.5%), esophageal cancer (n = 15; 5.1%), and pediatric cancers (n = 12; 4.1%). Primary focus areas were early detection, diagnosis, and prognosis and cancer control, survivorship, and outcomes research. Kenyatta National Hospital, Moi Teaching and Referral Hospital, and University of Nairobi were most often cited as research host institutions. One hundred twenty-three unique funding sources were reported, with the most prevalent study funding sources by region being North America (48%), Europe (28.8%), and Middle East/Africa (17.6%). The US National Institutes of Health was cited as the leading funding source of cancer research in Kenya. CONCLUSION This scoping review provides an overview of the published literature on cancer research conducted in Kenya. It highlights cancer research by cancer type, location, and focus area. It also focuses attention on research gaps, as well as the need for rigorous, well-conducted population-based studies, longitudinal studies, and randomized controlled trials aligned with the cancer burden in Kenya.