Partial deletion of the short arm of chromosome 10 syndrome

Partial deletion of the short arm of chromosome 10 syndrome (also referred to as 10p partial monosomy or partial monosomy 10p) is a rare chromosomal disorder caused by the loss of a segment of genetic material from the short arm (p) of chromosome 10. The clinical presentation varies depending on the size and exact location of the deleted segment. Commonly reported features include intellectual disability, developmental delay, craniofacial dysmorphisms (such as a broad or prominent forehead, hypertelorism, low-set ears, and a flat nasal bridge), growth retardation, and congenital heart defects. Some patients may also present with urogenital anomalies, hearing impairment, and limb abnormalities. Deletions involving the 10p13-p14 region have been associated with DiGeorge syndrome-like features, including hypoparathyroidism, immune deficiency due to thymic hypoplasia, and sensorineural deafness, which is sometimes referred to as the HDR syndrome (hypoparathyroidism, deafness, renal dysplasia) when the GATA3 gene at 10p14 is involved. The severity and spectrum of symptoms are highly variable and correlate with the extent of the chromosomal deletion. Neurological involvement is common, with many affected individuals experiencing speech and language delays, behavioral difficulties, and varying degrees of cognitive impairment. Seizures have also been reported in some cases. Cardiac anomalies, when present, may require surgical intervention. Management is multidisciplinary and symptom-based, involving pediatric cardiology, endocrinology, audiology, nephrology, speech therapy, and developmental support services. There is no cure for the underlying chromosomal abnormality, so treatment focuses on addressing individual clinical manifestations and optimizing developmental outcomes through early intervention programs.

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