<unk>  is a very rare condition characterised by extremely low levels or complete absence of the enzyme<unk>  activity in the body. It is an autosomal recessive disease resulted from various mutations of gene CPY19 (P450arom) which can lead to delayed puberty in females, osteoporosis in males and virilisation in pregnant mothers. As of 2016, only 35 cases have been described in medical literature.
Aromatase deficiency
Estrogen insensitivity syndrome
Isolated 17,20-lyase deficiency
5α-Reductase 2 deficiency
Partial androgen insensitivity syndrome
Androgen-induced hermaphroditism
Congenital estrogen deficiency
Aromatase excess syndrome