Abstract
Mutations in the LMNA gene encoding lamins A/C are responsible for a variety of disorders, commonly referred to as “laminopathies,” including the segmental premature aging syndrome Hutchinson–Gilford progeria. We describe in this report the rare association of osteosarcoma and slowly progressing progeria in an 11‐year‐old girl carrying a truncating heterozygous c.1868C > G (p.T623S) prelamin A mutation. These findings are discussed in light of recent data on the pathophysiological mechanisms underlying progeria and “physiological” aging in human, as well as previous data on other well‐known segmental aging syndromes.