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Table 1 Immunohistochemistry demonstrates only weak IGF1R expression in uncultured cartilage tumours

From: No preclinical rationale for IGF1R directed therapy in chondrosarcoma of bone

Diagnose Weak IGF1R positivity
Enchondroma 3/5 (60 %)
Osteochondroma 2/7 (29 %)
Central Conventional chondrosarcoma 32/71 (45 %)
  Grade I 8/28 (29 %)
  Grade II 15/29 (51 %)
  Grade III 9/14 (64 %)
Peripheral Conventional chondrosarcoma 14/34 (41 %)
  Grade I 8/21 (38 %)
  Grade II 5/10 (50 %)
  Grade III 1/3 (33 %)
Dedifferentiated chondrosarcoma 11/32 (34 %)
Mesenchymal chondrosarcoma 0/18 (0 %)
Clear cell chondrosarcoma 1/20 (5 %)
Total 63/187 (34 %)