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What is the history of Koolen De Vries Syndrome / 17q21.31 Microdeletion Syndrome?

When was Koolen De Vries Syndrome / 17q21.31 Microdeletion Syndrome discovered? What is the story of this discovery? Was it coincidence or not?

History of Koolen De Vries Syndrome / 17q21.31 Microdeletion Syndrome

Koolen De Vries Syndrome / 17q21.31 Microdeletion Syndrome: A Brief History


Koolen De Vries Syndrome, also known as 17q21.31 Microdeletion Syndrome, is a rare genetic disorder that was first identified in the early 2000s. It is characterized by a small deletion of genetic material on chromosome 17q21.31, resulting in a range of physical and developmental challenges.


The syndrome was named after two Dutch geneticists, Bert B.A. de Vries and Tjitske Kleefstra, who independently discovered and described the condition. In 2006, they published separate studies that identified the common deletion on chromosome 17q21.31 in individuals with similar clinical features.


Genetic Basis and Clinical Features


The genetic basis of Koolen De Vries Syndrome involves a microdeletion, which means that a small segment of DNA is missing from one of the two copies of chromosome 17. This deletion typically spans about 500 kilobases and affects several genes within the 17q21.31 region.


Individuals with Koolen De Vries Syndrome may exhibit a wide range of symptoms and characteristics. Some of the most common features include intellectual disability, developmental delays, speech and language impairments, and distinctive facial features such as a long face, high forehead, and a broad nasal bridge.


Diagnostic Advances and Prevalence


As awareness of Koolen De Vries Syndrome grew, genetic testing techniques improved, allowing for more accurate diagnosis. Initially, the syndrome was identified through a process called fluorescence in situ hybridization (FISH), which used fluorescent probes to detect the deletion on chromosome 17. However, with the advent of chromosomal microarray analysis (CMA), the diagnosis became more precise and accessible.


Estimating the prevalence of Koolen De Vries Syndrome has been challenging due to its rarity and the variability of symptoms. However, studies suggest that it may occur in approximately 1 in 16,000 to 1 in 30,000 individuals.


Research and Support


Since its initial discovery, research on Koolen De Vries Syndrome has expanded, aiming to understand the underlying genetic mechanisms and improve clinical management. Scientists have identified specific genes within the deleted region that may contribute to the syndrome's features, shedding light on potential therapeutic targets.


Support networks and advocacy groups have also emerged to provide resources and assistance to individuals and families affected by Koolen De Vries Syndrome. These organizations play a crucial role in raising awareness, facilitating research collaborations, and offering support to affected individuals and their families.


Conclusion


Koolen De Vries Syndrome, or 17q21.31 Microdeletion Syndrome, is a rare genetic disorder characterized by a small deletion on chromosome 17q21.31. It was first identified by Dutch geneticists in the early 2000s and has since been the subject of ongoing research and support initiatives. Improved diagnostic techniques and increased awareness have contributed to a better understanding of the syndrome and its impact on affected individuals and their families.


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