Enrica Marchionni, Maria Rosaria D'Apice, Viviana Lupo, Giovanna Lattanzi, Elisabetta Mattioli, Gina Lisignoli, Elena Gabusi, Gerardo Pepe, Manuela Helmer Citterich, Elena Campione, Anna Maria Nardone, Paola Spitalieri, Noemi Pucci, Dario Cocciadiferro, Eliseo Picchi, Francesco Garaci, Antonio Novelli, Giuseppe Novelli
COL2A1 gene encodes the alpha-1 chain of type-II procollagen. Heterozygous pathogenic variants are associated with the broad clinical spectrum of genetic diseases known as type-II collagenopathies. We aimed to characterize the NM_001844.5:c.1330G>A;p.Gly444Ser variant detected in the COL2A1 gene through trio-based prenatal exome sequencing in a fetus presenting a severe skeletal phenotype at 31 Gestational Weeks and in his previously undisclosed mild-affected father. Functional studies on father's cutaneous fibroblasts, along with in silico protein modeling and in vitro chondrocytes differentiation, showed intracellular accumulation of collagen-II, its localization in external Golgi vesicles and nuclear morphological alterations...
December 2023: Bone Reports