Distal deletion 10p syndrome

Distal deletion 10p syndrome (also known as monosomy 10p, partial deletion of the short arm of chromosome 10, or 10p deletion syndrome) is a rare chromosomal disorder caused by a deletion of genetic material from the distal (terminal) portion of the short arm of chromosome 10. The size and exact location of the deletion can vary among affected individuals, which contributes to a wide spectrum of clinical severity. The syndrome affects multiple body systems. Key clinical features include craniofacial abnormalities such as microcephaly, a broad or prominent forehead, hypertelorism (widely spaced eyes), a short nose with anteverted nares, and low-set or malformed ears. Congenital heart defects are frequently observed, and the DiGeorge syndrome-like phenotype (including hypoparathyroidism, immune deficiency due to thymic hypoplasia, and cardiac anomalies) can occur when the deletion encompasses the DGCR2 region on 10p13-p14. Intellectual disability of variable degree is a hallmark feature, and developmental delay, particularly in speech and motor milestones, is common. Genitourinary anomalies, including cryptorchidism and renal malformations, may also be present. There is no cure for distal deletion 10p syndrome. Management is supportive and multidisciplinary, tailored to the individual's specific clinical manifestations. This may include cardiac surgery for congenital heart defects, calcium and vitamin D supplementation for hypoparathyroidism, immunological monitoring and management, speech therapy, physical therapy, and special educational support. Early intervention programs are recommended to optimize developmental outcomes. Genetic counseling is advised for affected families.

Common questions about Distal deletion 10p syndrome