TRPV4 and bronchiolitis obliterans syndrome: TRPV4-related skeletal dysplasias encompass a clinical spectrum, including metatropic dysplasia (MD), spondylometaphyseal dysplasia, Kozlowski type (SMDK), and autosomal dominant brachyolmia (BO) [5], which share overlapping radiographic features but differ in severity, distribution of skeletal involvement, and extra-skeletal complications [18].