Africa: African Genomics Research Is Growing - What Countries Are Doing to Connect Genetic Data and Healthcare

African genomics research is expanding, with nations across the continent seeking to harness genetic data to improve healthcare. This is vital given Africa's remarkable genetic diversity, yet a vast majority of global genomic research still fails to include adequate representation from African populations. Currently, only around 0.15% of participants in genome-wide association studies are from Africa, leaving a significant gap in understanding how genetic variations impact health in this region.

Researchers have found that genetic changes previously associated with inherited heart conditions in African individuals may be harmless, highlighting the importance of more comprehensive genetic data from the continent. A genetic test must go beyond merely reading a person's DNA; it requires reliable information to interpret the significance of genetic changes.

By incorporating more genetic information from African populations, healthcare could become clearer for certain inherited conditions, provide families with better insights into hereditary diseases, and enhance our understanding of individual responses to medications.

In a recent study, researchers examined national genome projects across Africa and how they could help bridge the gap in genetic data representation. The study's authors, a team of experts from various African countries and regions, emphasize that no single approach will fit every country due to differing scales, focuses, and resources. They argue that sequencing must be accompanied by local expertise, responsible data governance, and sustained investment to truly benefit healthcare.

Several African countries have initiated national genome projects, including Tunisia, Egypt, Senegal, Tanzania, Kenya, and South Africa. These projects vary in scale and focus, with some already actively studying both healthy individuals and those with clinical conditions, while others are still in their early stages. Tunisia aims to study both healthy individuals and those with conditions, while Egypt plans to investigate common and rare diseases on a larger scale.

Senegal's project includes 31 ethnolinguistic groups from all 14 regions, addressing potential oversights in population representation.

The researchers argue that these national projects should build upon existing initiatives like H3Africa, which has helped develop laboratories, research skills, and collaborations across the continent. However, each project should be tailored to its respective country's health priorities and resources, as no single model will suit every nation.

The ultimate goal is not to offer genetic tests to every person, but rather to build missing knowledge and develop the necessary people and systems to utilize this information effectively.

For families affected by inherited diseases, improved local information could make it easier to determine whether a genetic change is linked to disease. Additionally, research may help doctors understand why some medications work differently among individuals, and locally generated evidence can aid in studying diseases that matter to specific populations.

However, these benefits require more than just sequencing thousands of genomes—countries need laboratories, computing systems, trained scientists, health professionals, and clear rules on consent, privacy, storage, and access to genetic data.

To move forward, governments and project leaders should agree on the health questions the projects should answer, involve communities in the design process, and establish rules for data consent and access before collecting samples. Budgets should cover training, secure data systems, and the personnel needed to interpret results, alongside the actual sequencing process. While international collaboration remains essential, countries should also have meaningful control over the genomic data generated from their populations.

Ultimately, genomics should not be seen as competing with existing health priorities, such as dealing with infectious diseases, health worker shortages, and the rising prevalence of cancer and cardiovascular disease. Instead, it should complement these efforts by providing locally relevant insights that can inform and improve healthcare systems on the continent.