22q11 deletion: 22q deletion could be any deletion on chromosome #22, in the q arm of chromosome. Each chromosome has a short (p) and a long (q) arm. On both arms many areas that can be deleted. The most common is the 22q11 deletion syndrome which is variable ranging from perhaps mild learning difference to congenital heart defect, immunodeficiency, or hypocalcemia (low blood calcium). Many genes are involved.
Answered 5/8/2015
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