Breaking Free from Your Fetal Chains: A Case-Based Review of the Literature on Gamma Chain Variant Hemoglobinopathies

Methemoglobinemia is a dyshemoglobinemia characterized by cyanosis and reduced oxygen saturation with increased methemoglobin values. The etiology may be congenital or acquired, the latter being more common. We report case of full-term neonate who presented transient methemoglobinemia caused mutation in gamma chain fetal hemoglobin.