| DDX3X syndrome |
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DDX3X syndrome is a genetic disorder that affects predominantly females. [1] Patients with DDX3X syndrome may develop developmental delay or intellectual disability, autism, ADHD, and low muscle tone. The syndrome develops due to mutations of the DDX3X gene located on the X chromosome, and the clinical picture varies depending on the specific mutation.
The syndrome was first described in a study published in 2015. [2]
According to studies performed up to 2022, DDX3X syndrome was presumed to account for 1-3% of cases of unexplained developmental delay and/or intellectual disability in females, [3] but this may be an approximate early estimate.