Eustachian Tube Growth and Development: Anatomy/Function. Protocol Description. This study measures Eustachian tube function and facial growth over time in three groups of children: one with recurrent ear infections, one with chronic middle ear fluid, and one with little past history of otitis media.
Causes of Kartagener syndrome. Kartagener syndrome is caused by a mutation in the DNAI1 gene, which makes a cellular protein required for normal functioning cilia (cilia line the respiratory tract) and sperm motility.
Most of the time, people with Kallmann syndrome resulting from an ANOS1 gene mutation inherit the mutation from their mothers, who carry a single altered copy of the gene in each cell (and generally do not have any signs or symptoms of the condition). Other people have Kallmann syndrome as a result of a new mutation in the ANOS1 gene.