Khalifa University researchers complete reference genome study for the UAE

, Khalifa University researchers complete reference genome study for the UAE
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, Khalifa University researchers complete reference genome study for the UAE

ABU DHABI, 5th July, 2021 (WAM) — A team of scientists from Khalifa University of Science and Technology has completed a significant local genome study that will contribute to nationwide efforts to build a high-quality, comprehensive reference genome for the UAE population.

The first phase of the study – the description of the first whole genome sequences of UAE nationals – was completed in 2019. Subsequently, in 2020, the researchers completed the second phase which described the nature of the genetic diversity found among UAE nationals. This year, the researchers completed the third phase of the UAE reference genome, which supports a broader understanding of the genome composition of the nation.

Following advancements in DNA sequencing and analysis techniques since renowned scientist Craig Venter and his colleagues published the first whole human genome sequence at the turn of this century, the genome study has become part of a major area of research at Khalifa University.

The Khalifa University scientists recently published a report titled ‘A population-specific Major Allele Reference Genome from the United Arab Emirates population’ in the international journal, Frontiers in Genetics. The study was authored by Dr. Habiba Alsafar, Associate Professor, Department of Genetics and Molecular Biology, Dr. Andreas Henschel, Associate Professor, Electrical Engineering and Computer Science, with Dr. Gihan Daw Elbait and Dr. Guan Tay, from the Center for Biotechnology.

Dr. Arif Sultan Al Hammadi, Executive Vice-President, Khalifa University, said: “Our researchers have published the first whole genome of a UAE national and have followed it up with this reference genome. This will advance our understanding of the genomes of the UAE population, improving the ability of researchers and clinicians to identify genetic causes of diseases that are common in the UAE and the region. This is a stellar achievement in the field of medicine and healthcare, as this will become a fundamental tool that will advance genome and public health research in the UAE, and contribute to nationwide efforts, being led by the recently formed UAE Genomics Council to incorporate genomics into the healthcare ecosystem of the UAE.”

The ethnic composition of the population of a nation contributes to its genetic uniqueness. Consequently, it is important to define national reference genomes of its people to avoid any confounding effects which are linked to the use of reference genomes from other national genome sequencing efforts. A total of 1,028 UAE nationals were recruited for this study, as part of the 1,000 UAE genome project that was conceived by the research team when the Center of Biotechnology was founded in 2015. Of these, 129 samples were selected as individuals that are most representative of the genetic diversity of the UAE for construction of the UAERG.

“Despite achieving this major milestone in a relatively short period of time, our work to improve our understanding of how genes contribute to health continues,” said Dr. Alsafar and added, “Our next challenge is to decode the genome data to identify genetic markers that better predict the likelihood of disease.”

Precision medicine has the potential to profoundly improve the practice of medicine. The goal is to enable clinicians to quickly, efficiently and accurately predict the most appropriate course of action for a patient; a pre-emptive strike to prevent or delay the onset of disease. However, the practice of precision medicine and personalized healthcare is a complex science as it is influenced by a range of factors such as the environment and the inherent characteristics within an individual. Genetics is an important contributor to this complexity and genome science will play a key role in the rollout of future national health programs.

Since the establishment of the Center for Biotechnology, its primary mission sought to address a gap in knowledge relating to the specific genomic features of the UAE population. In 2018, the BTC team outlined a vision for a National Arab Genome project for the UAE in the Journal of Human Genetics. The aim was to address the deficiency in genome data on the UAE population to improve our understanding of genome variants that are unique to the population of the nation. The team led by eminent geneticist Dr. Alsafar, proceeded with the bold ambition to sequence Emirati nationals to provide a reference upon which clinical decisions can be made.

In 2019, Dr. Alsafar led the team that described the first Whole Genomes Sequences (WGS) of two UAE nationals in Nature Publishing Group’s Scientific Report. “It was important to achieve this milestone, as the whole genome sequences provided a starting point for construction of a UAE reference panel which will lead to improvements in the delivery of precision medicine, which we hope will eventually lead to improvements in the quality of life of UAE nationals” said Dr Alsafar.

Despite reporting on the first genome of a UAE national, the Khalifa University team continued to sequence samples provided by UAE nationals for research. In mid-2020, the team followed up the report of the first UAE Whole Genome Sequence with two papers in Frontiers in Genetics. These studies showed that the contemporary population of the UAE arose from gradual admixture through complex and long term interactions between local communities of the area that is now the UAE and the people of neighbouring regions.

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