Metaphyseal Undermodeling, Spondylar Dysplasia, and Overgrowth, also known as overgrowth-metaphyseal undermodeling-spondylar dysplasia syndrome, is related to melnick-needles syndrome and otopalatodigital syndrome, type i. An important gene associated with Metaphyseal Undermodeling, Spondylar Dysplasia, and Overgrowth is GPC3 (Glypican 3). Affiliated tissues include bone and skin.