Extending the global landscape of Bruck syndrome: Case series of Indonesian and Ukrainian patients with PLOD2 pathogenic variants and literature review.

Paveta, Devina Afraditya; Utari, Agustini; Cayami, Ferdy Kurniawan; Maugeri, Alessandra; Märtson, Aare; Kõks, Sulev; Pashenko, Andrii; Khmyzov, Sergii et al. · Bone Rep · 2026

case_series · Level IV

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Abstract

Bruck syndrome type 2 (BRKS2) is a rare disorder marked by congenital joint contractures and bone fragility, caused by variants in PLOD2, which encodes lysyl hydroxylase 2 essential for collagen stability. We report the first genetically confirmed BRKS2 cases from Indonesia and Ukraine, both showing fractures, skeletal deformities, and contractures. The Indonesian patient had compound heterozygous variants, while the Ukrainian patient had a homozygous missense variant, expanding the phenotypic and geographic spectrum of the disorder.