<unk>  (KdVS), also known as 17q21.31 microdeletion<unk> , is a rare genetic disorder caused by a deletion of a segment of chromosome 17 which contains six genes. This deletion<unk>  was discovered independently in 2006 by three different research groups.
Koolen–De Vries syndrome
Urbach–Wiethe disease
Van Den Bosch syndrome
Van der Woude syndrome
Van Gogh syndrome
Baggio–Yoshinari syndrome
Barakat-Perenthaler syndrome
Aagenaes syndrome