[Detection of RB gene in osteosarcoma by PCR].

We have established a stable PCR system and studied the structural anomalies of RB gene by it in osteosarcoma, previous studies have proved that 13-17 exons of RB gene are the deletion hotpoints. We designed a pair of perimers, RB1, RB2 stretching across 14-16 exons and studied 10 cases of osteosarcoma. No structural anomaly was found in the leucocyte. Two cases (20%) showed no PCR product. This result demonstrates for the first time the deletion of RB gene is present in Chinese osteosarcoma patients.