Population Genomics for Sickle Cell Disease: Return of Results, Cascade Testing, and Health System Readiness, Implementation and Equity Considerations

Kibibi Wairimu H.

School of Natural and Applied Sciences Kampala International University Uganda

                                                                                 ABSTRACT
Population genomics is increasingly positioned as a transformative approach for identifying and managing monogenic disorders at scale through systematic analysis of genomic variation within populations. Sickle cell disease (SCD), a globally prevalent hemoglobinopathy with well-defined genetic etiology and significant public health burden, represents a strong candidate for population-based genomic screening programs. This paper examines the implementation of population genomics for SCD with emphasis on three core components: return of results, cascade testing, and health system readiness, while critically engaging with equity, ethical, legal, and social implications.The return of genomic results raises challenges related to timing, communication strategies, and health literacy, particularly in settings with limited genetic counseling infrastructure. Cascade testing emerges as a cost-effective and preventive strategy for identifying at-risk relatives, but its success depends on effective family communication pathways and culturally sensitive consent processes. Health system readiness is essential for sustainable implementation and requires robust infrastructure, workforce capacity, data governance systems, and integration with clinical workflows and electronic health records. Equity considerations remain central, as disparities in access to testing, interpretation, and follow-up care may exacerbate existing health inequalities if not carefully addressed. Community engagement, trust-building, and participatory governance are essential for ethical implementation and long-term sustainability. Ultimately, population genomics for SCD offers significant promise for precision public health, but its success depends on balancing technological capability with ethical responsibility, system capacity, and equitable access.

Keywords: Population genomics, Sickle cell disease, Cascade testing, Health system readiness and Health equity.

CITE AS: Kibibi Wairimu H. (2026). Population Genomics for Sickle Cell Disease: Return of Results, Cascade Testing, and Health System Readiness, Implementation and Equity Considerations. INOSR APPLIED SCIENCES 14(2):13-21. https://doi.org/10.59298/INOSRAS/2025/14.2.1321