Metabolic and cardiovascular disease risk for Zimbabwean men with prostate cancer receiving long-term androgen deprivation therapy

Abstract

Introduction: Prostate cancer is a leading cause of cancer-related mortality in the majority of sub-Saharan Africa region countries. Androgen deprivation therapy (ADT) is effective treatment, however ADT is associated with complications including metabolic syndrome and cardiovascular disease. Although cardiovascular disease is a leading cause of mortality among prostate cancer patients, there is limited information on ADT impact on metabolic syndrome and cardiovascular disease risk among Africans. An observational prospective cohort study was carried out in Harare, Zimbabwe. Prostate cancer patients due to be initiated on ADT (medical or surgical) were assessed for metabolic syndrome and a 10-year Atherosclerotic Cardiovascular Disease (ASCVD) 10-year risk probability score was done before ADT and followed up to 9 months.

Results: 17 black Zimbabwean men were enrolled with a median age 72 years. Most participants (59%) had stage IV disease and 75% opted for surgical castration. At enrolment 23.5% had metabolic syndrome and this increased to 33% after 9 months of ADT. Baseline ASCVD risk was in the high risk category for 68.8% of participants and remained above 50% after 9 months of ADT. In this cohort, there is a 10% absolute increase in metabolic syndrome prevalence amongst African men with prostate cancer within 9 months of ADT initiation.

Keywords: African men; Androgen deprivation therapy; metabolic syndrome; prostate cancer.

Figure 1

Metabolic syndrome prevalence and atherosclerotic cardiovascular disease risk score among study participants at baseline enrollment, 3months, 6 months and 9 months after ADT commencement.