Hypogonadism-mitral valve prolapse-intellectual disability syndrome

Hypogonadism-mitral valve prolapse-intellectual disability syndrome (also known as Gorlin-Chaudhry-Moss syndrome or GCM syndrome) is an extremely rare genetic disorder characterized by a distinctive combination of features affecting multiple body systems. The syndrome was first described in the medical literature and involves the endocrine, cardiovascular, and central nervous systems as its primary areas of involvement. Key clinical features include hypogonadism (underdevelopment of the reproductive organs with reduced production of sex hormones), mitral valve prolapse (a cardiac valve abnormality where the mitral valve does not close properly), and intellectual disability of variable severity. Additional features that have been reported in affected individuals include craniofacial anomalies such as craniosynostosis, midface hypoplasia, hypertrichosis (excessive hair growth), dental anomalies, and eye abnormalities including microphthalmia or other ocular defects. Short stature and hearing loss have also been described in some patients. The condition is present from birth, though some features such as hypogonadism may become more apparent during puberty when expected sexual development fails to occur normally. The cardiac involvement, specifically mitral valve prolapse, requires monitoring and may necessitate cardiology follow-up. There is no specific cure for this syndrome, and management is supportive and symptomatic. Treatment typically involves a multidisciplinary approach including hormone replacement therapy for hypogonadism, cardiac monitoring and management for mitral valve prolapse, special education support for intellectual disability, and surgical interventions as needed for craniofacial or other structural anomalies. Genetic counseling is recommended for affected families.

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