<unk>  is an inherited chromosome abnormality. It is caused by the presence of extra genetic material from chromosome 11 and chromosome 22 in each cell. In addition to the usual 46 chromosomes, people with<unk>  have an extra (supernumerary) chromosome consisting of a piece of chromosome 11 attached to a piece of chromosome 22. The extra chromosome is known as a derivative 22, or der(22), chromosome.
Emanuel syndrome
TRIANGLE disease
RIDDLE syndrome
Crigler–Najjar syndrome
CLOVES syndrome
RAPADILINO syndrome
PASLI disease
Woodhouse–Sakati syndrome