Dr. Oluwatosin Ayeni

Oluwatosin Ayeni is a clinical researcher focused on breast cancer outcomes in sub-Saharan Africa, with particular expertise in the intersection of oncology and HIV. Affiliated with the South African Breast Cancer and HIV Outcomes (SABCHO) Study, Ayeni contributes to multidisciplinary efforts examining how infectious and noncommunicable diseases jointly shape cancer prognosis within resource-constrained health systems.

Research centers on the relationship between HIV infection and aggressive breast cancer subtypes, including triple-negative disease, as well as the impact of multimorbidity on survival. Published work in leading global health and oncology journals highlights associations between HIV status and tumor biology, treatment tolerance, and endocrine therapy adherence, advancing understanding of cancer disparities in African populations.

Additional contributions explore genetic risk variation in African women and health system factors influencing diagnosis and care pathways. Collectively, this scholarship strengthens evidence for integrated cancer and HIV care models, informs policy in low- and middle-income settings, and elevates African-led data in global oncology discourse.