The high oxygen-affinity Hemoglobin Johnstown [(beta 109(G11) Val-->Leu] in a German kindred with an elevated erythrocyte hemoglobin content: potential interaction with HFE mutations.

Abstract excerpt

A 23-year-old man with an elevated blood hemoglobin was found to have hemoglobin (Hb) Johnstown, a high oxygen-affinity hemoglobin and an elevated red cell hemoglobin content. The hemoglobin mutation was present in all family members who consented to molecular investigation. No elevation of the erythropoietin level was found in the carriers. A high ferritin level was observed in one family member. When carriers...

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