Atopy is a common familial syndrome which underlies allergic asthma and rhinitis. It is characterised by immunoglobulin E responses to common aero-allergens such as grass pollens or house dust mite.

Juvenile hemochromatosis (JH) is a rare autosomal recessive disorder that causes iron overload. In the French Canadian region of Saguenay Lac-Saint-Jean the worldwide largest cohort of JH cases has ...