After the identification of the human interferon-gamma (IFNG) variant G54D (c.287G>A, ss105106770) in DNA samples from Ghana, West Africa, systematic mutation screening of IFNG by the LightCycler®-based procedure of high-resolution melting (HRM) revealed additional rare mutations. All variants occurred heterozygously only and were confirmed either by their detection in other individuals and/or by repeated DNA sequencing of independent PCR products.
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