Rare Concurrence of Two Congenital Disorders: Miller-Dieker Syndrome and T-Cell Lymphopenia

Miller-Dieker syndrome (MDS; OMIM 247200) is a rare contiguous gene deletion syndrome associated with lissencephaly and characteristic facial dysmorphism. T-cell lymphopenia is an immunodeficiency disorder which can be early detected by newborn blood screening, and all live vaccines should be avoided. We report a 2.32-Mb microdeletion at chromosome 17p13.3p13.2 and T-cell lymphopenia in a 6-month-old male infant with MDS. This is, to our knowledge, the first description of these 2 conditions co-occurring in the same patient.