Abstract:Congenital central hypoventilation syndrome (CCHS) is a life-threatening disease that primarily manifests as sleep-associated respiratory insufficiency and a markedly impaired ventilatory response to hypercarbia and hypoxemia. Paired-like homeobox 2b (PHOX2B) gene mutations are known to cause CCHS. Almost all patients with CCHS are heterozygous for a poly-alanine expansion in PHOX2B. However, some patients have other germ-line abnormalities, including missense, nonsense and frame shift mutations. CCHS combined… Show more
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