Scientific background:

Summary: Inactivating mutations of this key enzyme in steroid hormone production cause hypertensive form of adrenal hyperplasia. A rare rearangement at this locus is found to be responsible for glucocorticoid remediable hypertension.

Methodology:

	clinical test	Method		Genomic sequencing of the entire coding region
		Turn-around time		25 working days
		Effort		little
		Specimen		DNA
		Quality assessment		Internal quality control only
	All known and new missense, nonsense and splice mutations can be detected.
	clinical test	Method		Carrier testing
		Turn-around time		5 working days
		Effort		little
		Specimen		DNA
		Quality assessment		Internal quality control only
	The test is only specific about the mutation already known in this kindred.

Literature: 

Lifton RP et al. (1992) A chimaeric 11 beta-hydroxylase/aldosterone synthase gene causes glucocorticoid-remediable aldosteronism and human hypertension.
White PC et al. (1991) A mutation in CYP11B1 (Arg-448----His) associated with steroid 11 beta-hydroxylase deficiency in Jews of Moroccan origin.
Mulatero P et al. (2004) Genetics of primary aldosteronism.