Intellectual Developmental Disorder with Persistence of Fetal Hemoglobin, also known as dias-logan syndrome, is related to bcl11a-related intellectual disability and chromosome 2p16.1-p15 deletion syndrome. An important gene associated with Intellectual Developmental Disorder with Persistence of Fetal Hemoglobin is BCL11A (BCL11 Transcription Factor A). Related phenotypes are intellectual disability and global developmental delay