Overview
Cohen syndrome is an autosomal recessively inherited disorder characterized by non-progressive mental retardation, short stature, microcephaly, peculiar facial features, slender extremities, floppiness, delayed puberty, and recently highlighted connective tissue abnormalities and ophthalmological issues 123.Diagnosis
Key Diagnostic Criteria: Non-progressive mental retardation, short stature, microcephaly, antimongoloid slant of the eyes, dental anomalies (prominent upper incisors, malocclusion), high-arched palate, chorioretinal dystrophy, decreased visual acuity, hemeralopia, constricted visual fields, optic atrophy 23.
Recommended Tests: Ophthalmological examination including visual acuity testing, fundoscopy, and electroretinography to assess retinal changes 2.
Genetic Testing: Considered essential for confirmation due to autosomal recessive inheritance pattern 2.Management
First-Line Treatments: Addressing dental anomalies through orthodontic interventions and managing gastroesophageal reflux with appropriate pharmacological agents (e.g., proton pump inhibitors) 1.
Adjunctive Treatments: Physical therapy to manage floppiness and hypotonia 3.
Ophthalmological Care: Regular monitoring and management of visual impairments by ophthalmologists 2.Special Populations
Pediatrics: Early intervention for developmental delays and orthopedic issues is crucial 3.
Comorbidities: Monitor and manage connective tissue manifestations such as mitral valve prolapse and gastroesophageal reflux 1.Key Recommendations
Conduct comprehensive ophthalmological evaluations including electroretinography to identify chorioretinal dystrophy and other ocular abnormalities in suspected cases (Evidence: Moderate 2).
Implement genetic testing to confirm Cohen syndrome diagnosis due to its autosomal recessive inheritance pattern (Evidence: Moderate 2).
Provide multidisciplinary support including physical therapy and dental care tailored to the specific anomalies observed in Cohen syndrome patients (Evidence: Expert opinion 3).References
1 Méhes K, Kosztolányi G, Kardos M, Horváth M. Cohen syndrome: a connective tissue disorder?. American journal of medical genetics 1988. link
2 Norio R, Raitta C, Lindahl E. Further delineation of the Cohen syndrome; report on chorioretinal dystrophy, leukopenia and consanguinity. Clinical genetics 1984. link
3 Fryns JP, Van den Berghe H. The Cohen syndrome. Journal de genetique humaine 1981. link