Overview
Congenital contractural arachnodactyly (CCA), also known as Beals syndrome, is an autosomal dominant connective tissue disorder characterized by multiple joint contractures, arachnodactyly, and distinctive facial features such as crumpled ears 12. It is caused by mutations in the FBN2 gene on chromosome 5q23 2.Diagnosis
Key Diagnostic Criteria: Multiple flexion contractures (especially elbows, knees, and fingers), arachnodactyly, crumpled auricles, hyperextensible joints, and characteristic facial features 12.
Recommended Tests: Detailed physical examination, including assessment of joint mobility and ear morphology; molecular genetic testing for FBN2 mutations 2.
Grading: Clinical diagnosis based on physical examination findings; genetic testing confirms diagnosis 2.Management
First-Line Treatments: Symptomatic management including physical therapy to maintain joint mobility and orthotic devices for support 2.
Adjunctive Treatments: Early intervention for scoliosis to prevent long-term morbidity 2.
Cardiac Evaluation: Regular monitoring for cardiac involvement, though aortic root dilatation is less common compared to Marfan syndrome 2.Special Populations
Pediatrics: Early screening and intervention can positively impact development and quality of life 1.
Comorbidities: Severe cases may present with additional anomalies not typically associated with CCA, potentially affecting prognosis 4.Key Recommendations
Conduct thorough physical examination focusing on joint contractures and characteristic facial features for diagnosis (Evidence: Strong 2).
Offer molecular genetic testing for FBN2 mutations to confirm diagnosis (Evidence: Strong 2).
Initiate early intervention for scoliosis to mitigate long-term complications (Evidence: Moderate 2).
Regularly monitor cardiac health due to potential involvement, though aortic root issues are less frequent compared to Marfan syndrome (Evidence: Moderate 2).
Provide symptomatic treatment and physical therapy to manage joint contractures and maintain mobility (Evidence: Expert opinion 2).References
1 Green L, Lesser D. A newborn with Beals syndrome. Southern medical journal 2006. link
2 Tunçbilek E, Alanay Y. Congenital contractural arachnodactyly (Beals syndrome). Orphanet journal of rare diseases 2006. link
3 Phadke SR, Gulati R, Agarwal SS. Further delineation of a new (Van Den Ende-Gupta) syndrome of blepharophimosis contractural arachnodactyly, and characteristic face. American journal of medical genetics 1998. link1096-8628(19980428)77:1<16::aid-ajmg4>3.0.co;2-j)
4 Currarino G, Friedman JM. A severe form of congenital contractural arachnodactyly in two newborn infants. American journal of medical genetics 1986. link
5 Herva R, Leisti J, Kirkinen P, Seppänen U. A lethal autosomal recessive syndrome of multiple congenital contractures. American journal of medical genetics 1985. link
6 Ramos Arroyo MA, Weaver DD, Beals RK. Congenital contractural arachnodactyly. Report of four additional families and review of literature. Clinical genetics 1985. link
7 Forbes D, Hagan R. Congenital contractural arachnodactyly. The Medical journal of Australia 1983. link