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Purpose The incidence of infection-associated cancers and lethality of cancers amenable to treatment are closely correlated with the income of countries. We analyzed a core part of this global cancer divide-the distribution of premature mortality across country income groups and cancers-applying novel approaches to measure avoidable mortality and identify priorities for public policy. Methods We analyzed avoidable cancer mortality using set lower- and upper-bound age limits of 65 and 75 years (empirical approach), applying cancer-specific and country income group-specific ages of death (feasibility approach), and applying cancer-specific ages of death of high-income countries to all low- and middle-income countries (LMICs; social justice approach). We applied these methods to 2015 mortality data on 16 cancers for which prevention is possible and/or treatment is likely to result in cure or significant increase in life expectancy. Results At least 30% and as much as 50% of cancer deaths are premature, corresponding to between 2.6 and 4.3 million deaths each year, and 70% to 80% are concentrated in LMICs. Using the feasibility approach, 36% of cancer deaths are avoidable; with the social justice approach, 45% of cancer deaths are avoidable. Five cancer types-breast, colorectal, lung, liver, and stomach-account for almost 75% of avoidable cancer deaths in LMICs and worldwide. Conclusion Each year, millions of premature cancer deaths could be avoided with interventions focused on four priority areas: infection-associated cancers, lifestyle and risk factors, women's cancers, and children's cancers. Our analysis of the global burden and the specific cancer types associated with avoidable cancer mortality suggests significant opportunities for health systems to redress the inequity of the global cancer divide.

Cancer is a leading global cause of death, and diverse and minority populations suffer worse outcomes compared with white people from Western societies. Within the United States, African Americans and other blacks, Hispanics, Asians, and American Indians have lower cancer survival rates than whites. In the rest of the world, those from low- and middle-income countries have the greatest disparities, but even those from non-Western high-income countries such as Oman and the United Arab Emirates are diagnosed with cancer at later stages and suffer increased mortality. Although considerable differences exist among these populations, similarities and synergies are also apparent. Challenges can be very similar in reaching these populations effectively for cancer control to improve outcomes, and innovative strategies are needed to effectively make change. In this review, the authors discuss new approaches to the prevention and early detection of cancer as well as the implementation of programs in global oncology and put in evidence cultural similarities and challenges of different populations, highlighting strategies to improve cancer survival and quality care around the world through innovations in training and education, empowerment of an alternative workforce, and a diagonal approach to cancer care using case studies drawn from the authors' work and experience.