Our results obtained in cultured LmnaG609G/G609G osteoblasts confirmed the aberrantly increased differentiation rate of laminopathic osteoblasts previously demonstrated in bone progenitor cells carrying the human progeria G608G LMNA mutation (Scaffidi & Misteli, 2008) and Mandibuloacral dysplasia osteoblasts (Avnet et al., 2011). This evidence concerns the gene LMNA and progeroid syndrome.