HB Tunis [α2β2124(H2) PRO→SER], A New β Chain Variant Identified by HPLC

Abstract
During a routine hematological investigation of a child from Tunis, [Tunisia] a silent hemoglobin variant was discovered by isoelectric-focusing. This variant was not detectable by conventional electrophoretic methods, had normal stability, expression, and oxygen affinity, and did not produce any clinical symptoms. This new variant .beta.124(H2)Pro-Ser was named Hb Tunis.