Primary ciliary dyskinesia (PCD) is a
progressive disorder affecting organ systems that rely on ciliary activity for
proper function. These organ systems include the upper and lower respiratory
tract, the middle ear and the reproductive organs. Other ciliated areas, such
as the ventricles of the brain, may be affected but this appears to be very
rare. Effective ciliary activity appears to be required for organ development
and placement during embryonic development, so approximately 50% of patients
with PCD have a condition called situs inversus totalis with complete
mirror-image organ placement in the thoracic and abdominal cavities. A small
number of affected individuals have heterotaxy syndromes. Congenital heart
defects, intestinal malrotation and splenic abnormalities (particularly
polysplenia) and other defects have been reported in PCD.
Preventing progressive lung disease is the
most pressing treatment goal for PCD patients and caregivers. With aggressive
intervention, it is possible to maintain stable lung function for many years and
with a commitment to daily therapy, many PCD patients do well for a long time.
However, there is a wide spectrum of severity in PCD with some affected
individuals progressing to advanced lung disease and the need for transplant in
early adulthood.
As interest in the field of ciliopathies
continues to grow, it is the goal of the PCD Foundation to be at the forefront
of research and educational efforts aimed at understanding the role of cilia in
human disease. Through these efforts, we hope to improve the lives and medical
outcomes of people with PCD and, eventually, to find a cure.
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