Particularly, the positivity score assigned as previously described [74] among the 23 CSPG4-expressing osteosarcomas was distributed as follow: 8 with a score of 8 (34.8%), 5 with a score of 7 (21.7%), 5 with a score of 6 (21.7%), 3 with a score of 5 (13.0%) and 2 with a score of 4 (8.7%). The gene discussed is CSPG4; the disease is osteosarcoma.