Case Report: A novel variant in fibrillin-2 identified in a congenital contractural arachnodactyly family with phenotypic heterogeneity - Summary - MDSpire
Advertisement
Case Report: A novel variant in fibrillin-2 identified in a congenital contractural arachnodactyly family with phenotypic heterogeneity
To identify the genetic etiology of congenital contractural arachnodactyly (CCA) in a specific family with three affected individuals across three generations.
Key Findings:
A novel heterozygous missense variant in FBN2 (c.3916T > G, p.Y1306D) was identified, which may contribute to the phenotypic variability observed in CCA.
The variant altered hydrophobicity, extended an intrinsically disordered protein region, and modified the surface charge of fibrillin-2, suggesting a mechanism for its pathogenicity.
Interpretation:
The findings contribute to the understanding of the genetic basis of CCA and expand the known variant spectrum of FBN2, potentially guiding future research and clinical diagnostics.
Limitations:
The study is based on a small family cohort, limiting generalizability and increasing the risk of biases.
Further studies are needed to explore the full phenotypic spectrum associated with FBN2 variants.
Conclusion:
This study identifies a novel FBN2 variant in a CCA family, enhancing genetic counseling and molecular diagnostics for the disorder.
Swedish registry analysis linked surgical treatment with better patient-reported function in comminuted intra-articular distal radius fractures, while other fracture patterns showed limited benefit.
