Chromosome 8q22.1 Duplication Syndrome, is also known as leri pleonosteosis, and has symptoms including joint stiffness An important gene associated with Chromosome 8q22.1 Duplication Syndrome is DUP8Q22.1 (Leri Pleonosteosis Chromosome Duplication Syndrome). Affiliated tissues include spinal cord and bone, and related phenotypes are gait disturbance and joint stiffness