Over the past two decades, genetics of congenital adrenal hyperplasia (CAH) have been extensively studied. The introduction of newborn screening programs in most western countries for CAH caused by 21-hydroxylase deficiency (21OHD) and genetic studies in different ethnic populations have enabled more accurate data concerning the distribution and incidence of CAH and revealed ethnic-specific mutations. Worldwide, the most common mutations in the severe salt-wasting form of 21OHD are the IVS2, the intron 2 splicing mutation, and a large deletion in exon 3. In non-classic 21OHD the most common mutation worldwide is V281L (1685 G to T), being prevalent in about 60% of non-classic patients. This article summarizes the current knowledge on the observed geographical differences of mutation spectra of CAH in specific ethnic groups.
In the first part of this voLume the oxide hydrates incLuding the hydroxides and hydroxide oxides of MOIII to MoVJare described. (The anhydrous moLybdenum oxides can be found in the voLume "MoLybdän" Erg.-Bd. B 1,1975.) The compounds Mo0 ·nHp with n=1 and 2 are 3 investigated in detail. They are true oxide hydrates and not "molybdic acids". For complete ness the hydrogen insertion compounds H with O.
Over the past two decades, genetics of congenital adrenal hyperplasia (CAH) have been extensively studied. The introduction of newborn screening programs in most western countries for CAH caused by 21-hydroxylase deficiency (21OHD) and genetic studies in different ethnic populations have enabled more accurate data concerning the distribution and incidence of CAH and revealed ethnic-specific mutations. Worldwide, the most common mutations in the severe salt-wasting form of 21OHD are the IVS2, the intron 2 splicing mutation, and a large deletion in exon 3. In non-classic 21OHD the most common mutation worldwide is V281L (1685 G to T), being prevalent in about 60% of non-classic patients. This article summarizes the current knowledge on the observed geographical differences of mutation spectra of CAH in specific ethnic groups.
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