Macrocephaly, Neurodevelopmental Delay, Lymphoid Hyperplasia, and Persistent Fetal Hemoglobin, is also known as mndlfh. An important gene associated with Macrocephaly, Neurodevelopmental Delay, Lymphoid Hyperplasia, and Persistent Fetal Hemoglobin is ZBTB7A (Zinc Finger And BTB Domain Containing 7A). Affiliated tissues include brain, and related phenotypes are intellectual disability and sleep apnea