The lifespan of patients with<unk>  is variable and depends on the subtype. Type A is generally severe, with a life expectancy in the 20s to 30s. In 2016, a man with<unk>  died at the age of 81. One study found that the mean life expectancy for patients in the United Kingdom was 25.30, with a standard deviation of 17.43 years. On average, female patients lived 4 years longer than male patients. Respiratory failure was the primary cause of death in 63% of patients. Other causes of death were cardiac failure (11%), post-traumatic organ failure (11%), complications of surgery (11%), and heart attack (4%). Life expectancy has been increasing since the 1980s. The average age at death due to respiratory failure improved from 17.42 years old in the 1980s to 30.74 years old in the 2000s.
Morquio syndrome
Eiken syndrome
Hapnes Boman Skeie syndrome
Zieve's syndrome
Galloway Mowat syndrome
Schimmelpenning syndrome
Okamoto syndrome
Sanjad-Sakati syndrome