However, it turns out that they all had conditions caused by a mutation in the same gene, called FLVCR1, according to new research set to be published in the journal Genetics in Medicine.

"We reanalyzed the patient's genetic and clinical data and that brought us to a gene, FLVCR1, and a medical mystery to solve," Calame said. To try to understand how the rare FLVCR1 mutation in the ...