Robuta

https://pubmed.ncbi.nlm.nih.gov/17163530/ COL2A1-related skeletal dysplasias with predominant metaphyseal involvement Skeletal dysplasias induced by mutations in the collagen 2 gene (the so-called "type 2 collagenopathies") form a wide spectrum in severity and are... relatedskeletalpredominantinvolvement