TY - JOUR T1 - Nicotinamide Phosphoribosyl Transferase Is Increased in Osteosarcomas and Chondrosarcomas Compared to Benign Bone and Cartilage JF - Anticancer Research JO - Anticancer Res SP - 1761 LP - 1765 DO - 10.21873/anticanres.13282 VL - 39 IS - 4 AU - ANDREW T. MERAM AU - YASIR ALZUBAIDI AU - JAMES COTELINGAM AU - GHALI GHALI AU - LIURKA LOPEZ AU - DOMENICO COPPOLA AU - RODNEY SHACKELFORD Y1 - 2019/04/01 UR - http://ar.iiarjournals.org/content/39/4/1761.abstract N2 - Background/Aim: Primary bone neoplasms include osteosarcomas (OS), chondrosarcomas (CS), and giant cell tumors (GCT). Nicotinamide phosphoribosyl transferase (NAMPT) catalyzes the rate-limiting step of nicotinamide adenine dinucleotide synthesis and is increased in multiple tumor types. In malignancies, NAMPT expression often correlates positively with tumor grade, chemotherapy resistance, and metastatic potential. Materials and Methods: Tissue microarray was used to examine NAMPT expression in benign bone and cartilage, GCTs, OS, and different CS grades. Results: For the first time, we showed that NAMPT expression was increased in GCTs and OS compared to benign bone, and in CS compared to benign cartilage. Its expression also increased with higher CS grade. Conclusion: Our data indicate that NAMPT plays a role in bone sarcomas and GCTs, and its higher expression may contribute to increased tumor aggressiveness. ER -