Scientists from Ghana, Nigeria, and the United States have published groundbreaking research in the New England Journal of Medicine, identifying a significant genetic factor contributing to kidney disease among West African populations.
The study, conducted through the Human Health and Heredity in Africa (H3Africa) Kidney Disease Research Network, examined 8,355 people from Ghana and Nigeria, with Ghanaians comprising 36.7percent of participants.
This extensive research effort represented one of the largest genetic studies focused on kidney disease in African populations to date. The research revealed that variants in the Apolipoprotein L1 (APOL1) gene, which originally protected African ancestors from sleeping sickness (Trypanosomiasis), now increases the risk of chronic kidney disease.
According to Dr. Dwomoa Adu, lead researcher from the University of Ghana Medical School, “Almost a third of Ghanaians studied had two copies of the gene (29.7percent) and 43.7percent had one copy of the gene. Compared with patients with no gene, one copy of the gene increased the risk of kidney failure by 18percent almost by a fifth, and two copies of the APOL1 gene increased the risk of kidney disease by a quarter (25percent),” he added.
The collaborative research which was spearheaded by Dr. Dwomoa Adu, Professors Ojo and Babatunde Salako received significant contributions from a team of doctors and scientists from Ghana and Nigeria.
In Ghana, the research team included scientists from three major institutions. The University of Ghana Medical School was represented by Dr. Charlotte Osafo, and Professor Vincent Boima. From the Kwame Nkrumah University of Science and Technology (KNUST), Professor Sampson Antwi and the late Professor Jacob Plange-Rhule contributed their expertise, whileas did Professor Alexander Nyarko and Professor Anita Ghansah participated from the Noguchi Memorial Institute of Medical Research.
The gene variants’ impact mirrors other evolutionary adaptations found in African populations. As Dr. Adu explained, “In this way the gene is like the sickle cell gene that protected people against malaria but can cause crises.”
This evolutionary trade-off highlights the complex relationship between genetic adaptation and modern health challenges in African populations. The research team’s findings suggest that what once served as a protective mechanism against a deadly disease has become a significant risk contributing factor for kidney disease in contemporary times. The implications of this research extend far beyond West Africa, potentially benefiting populations of African descent worldwide, Dr. Adu noted.
The identification of this genetic link opens new avenues for understanding kidney disease progression and could lead to more targeted therapeutic treatment approaches. These findings represent a significant step forward in addressing the high incidence of kidney disease in African populations and their descendants globally.
Managed by the African Academy of Sciences (AAS) through its Alliance for Accelerating Excellence in Science in Africa (AESA) platform in partnership with the African Union Development Agency, H3Africa is transforming health research in Africa by building local research capacity and driving African-led scientific discoveries.
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