A spondylometaphyseal dysplasia characterized by neonatal lethality, severe metaphyseal chondrodysplasia with mild limb shortening, platyspondyly, delayed epiphyseal ossification, irregular iliac crests, pulmonary hemorrhage, severe hypotonia and cardiorespiratory problems that has_material_basis_in homozygous or compound heterozygous mutation in GPX4 on chromosome 19p13.3.