Waardenburg Syndrome Due to PAX3 Mutations

Waldenburg syndrome due to PAX3 mutation Waldenburg syndrome was discovered in 1951 by Dutch ophthalmologist Petrus Johannes Waardenburg. He observed that people with two differently colored eyes are often hearing impaired. Currently, this disease is thought to be caused by a genetic mutation inherited by an autosomal dominant pattern, and parents with this disease may be infected by their children with a 50% chance. Today, about 50 years after the first observation at Waldenburg, people learned about this rare illness.

Dr. Oetting announced an example of Warardenburg syndrome. This may include gray hair, separation of broad eyes, patchy pigmentation, hearing loss, irises of various colors. More promising, the various people of the Waldenburg syndrome express various combinations of these features. People may have white forehead, blue eyes, brown eyes, but other people may have extensive eyes and hearing loss. Waldenburg syndrome is an example of variable expression, which means that the same genotype may cause different phenotypes in different people. Variable expressions are very common, even if scientists do not understand the cause well. Variable expression can be affected by accidental chance, environmental factors, interaction with other genes, or all of the above factors

Ferrets with white stripes and white heads on the surface such as flames, scorpions and giant pandas are almost certainly birth defects and have some similarities with the Waldenburg syndrome. This leads in particular to the deformation of the skull in the uterus, which widens the skull, marks the white face, and is partially or completely hearing impaired. It is estimated that as much as 75% of those colored ferrets like Waaldenburg are hearing impaired. White ferret is easy to see in thick bushes, so it is favored in the Middle Ages. Leonardo da Vinci painting ladies and suede may be labeled incorrectly; this animal may be a ferret rather than a white pelican ("where" is the name of an animal in the white winter coat is). ) Similarly, the portrait of Queen Elizabeth 's Suede shows her pet ferret. And it is decorated with a coat of arms of freckles.