Mutation analyses of three RAS genes (KRAS, HRAS and NRAS) were performed using polymerase chain reaction-single strand conformation polymorphism (PCR-SSCP) analyses and PCR direct sequencing in one hundred cases of soft tissue sarcoma (STS) as well as six STS cell lines from Japanese patients.
Restriction fragment length polymorphisms (RFLPs) of 2 oncogenes, c-Ha-ras and L-myc, have been analyzed in 101 patients with bone and soft-tissue sarcoma and in 98 normal individuals.