NCOA2 and mesenchymal chondrosarcoma: The findings were verified in two other studies: Nyquist et al (12) showed by RT-PCR the presence of HEY1-NCOA2 in 3 of 4 mesenchymal chondrosarcomas, and Nakayama et al (19) found HEY1-NCOA2 in 8 of 10 mesenchymal chondrosarcomas using FISH on formalin-fixed and paraffin-embedded samples.