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  • Title: Identification of 2 novel ANTXR2 mutations in patients with hyaline fibromatosis syndrome and proposal of a modified grading system.
    Author: Denadai R, Raposo-Amaral CE, Bertola D, Kim C, Alonso N, Hart T, Han S, Stelini RF, Buzzo CL, Raposo-Amaral CA, Hart PS.
    Journal: Am J Med Genet A; 2012 Apr; 158A(4):732-42. PubMed ID: 22383261.
    Abstract:
    Juvenile hyaline fibromatosis (JHF) and infantile systemic hyalinosis (ISH) are rare, autosomal recessive disorders of the connective tissue caused by mutations in the gene encoding the anthrax toxin receptor 2 protein (ANTXR2) located on chromosome 4q21. Characteristically, these conditions present with overlapping clinical features, such as nodules and/or pearly papules, gingival hyperplasia, flexion contractures of the joints, and osteolytic bone defects. The present report describes a pair of sibs and three other JHF/ISH patients whose diagnoses were based on typical clinical manifestations and confirmed by histopathologic analyses and/or molecular analysis. A comparison of ISH and JHF, additional thoughts about new terminology (hyaline fibromatosis syndrome) and a modified grading system are also included.
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