6p22 microdeletion syndrome

6p22 microdeletion syndrome (Orphanet code 251046) is a rare chromosomal disorder caused by a submicroscopic deletion on the short arm of chromosome 6 at band p22. This condition is characterized by a variable clinical presentation that typically includes developmental delay, intellectual disability, and distinctive facial features. Because the deletion can vary in size and exact breakpoints among affected individuals, the severity and range of symptoms can differ considerably from person to person. Key clinical features commonly reported in individuals with 6p22 microdeletions include global developmental delay, speech and language impairment, mild to moderate intellectual disability, and behavioral difficulties. Craniofacial dysmorphisms may include a broad forehead, hypertelorism (widely spaced eyes), flat nasal bridge, and ear anomalies. Some patients may also present with ocular abnormalities, hearing impairment, congenital heart defects, and structural brain anomalies. Growth parameters can be affected, with some individuals showing short stature or microcephaly. There is currently no cure or targeted therapy for 6p22 microdeletion syndrome. Management is supportive and symptom-based, involving early intervention programs, speech and occupational therapy, special education services, and regular monitoring by a multidisciplinary team including geneticists, cardiologists, ophthalmologists, and neurologists as needed. Genetic counseling is recommended for affected families. Most cases arise de novo (as new mutations), though parental chromosomal studies are important to assess recurrence risk.

Common questions about 6p22 microdeletion syndrome