BCL11A and intervertebral disk degenerative disorder: BCL11A-related Intellectual Developmental Disorder (BCL11A-IDD), also known as intellectual developmental disorder with persistence of fetal hemoglobin [OMIM #617101] or Dias-Logan syndrome, is an autosomal dominant condition caused by heterozygous pathogenic variants in BCL11A (HGNC:13221) [1, 2].