Dubai: Equipped with genetic and clinical data from dozens of Arab children in Dubai and Jordan, a new study led by scientists from the Mohammed Bin Rashid University of Medicine and Health Sciences (MBRU) and Al Jalila Children’s Specialty Hospital points to novel genetic factors that may contribute to multisystem inflammatory syndrome in children (MIS-C), a rare life-threatening complication arising out of COVID-19 in children.
MIS-C is a rare but serious complication that may occur in children with COVID-19. The condition is characterised by intense inflammation (cytokine storm) and can affect multiple organs including the heart, lungs, kidneys, brain, skin, eyes and gastrointestinal organs. MIS-C is a life-threatening disease if not diagnosed and treated promptly. It is not yet clear why certain children develop this complication, but recent study provides new evidence on the potential genetic factors related to MIS-C.
Damaging immune-related genetic changes
The study analysed clinical, laboratory markers and genomic findings of 70 predominantly Middle Eastern children who had COVID-19, of whom 45 met the case definition of MIS-C while 25 did not and were included as ‘controls’. Patients were treated at Al Jalila Children’s Specialty Hospital in the UAE and Jordan University Hospital, between September 2020 and August 2021.
Funded by the Al Jalila Foundation and published in JAMA Network Open, the study found that children with MIS-C were significantly more likely to have rare and likely damaging immune-related genetic changes when compared to ‘control’ children with COVID-19, but without MIS-C. Furthermore, there was an association between genetic findings and disease onset and resistance to treatment.
“This is an important study not only because the findings show comprehensive genetic profiling of children with MIS-C, which is essential to characterise the genetic contribution to the disease, but also because patients of an Arab background have long been underrepresented in genetic studies,” said Dr Walid Abuhammour, head of the Paediatric Infectious Diseases department at Al Jalila Children’s Specialty Hospital and study investigator.
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