Chondrocyte secreted proteins differentially expressed in Group A and Group B
| Gene | Protein | Group A fold increase | Group B fold increase |
| WIF1 | Wnt inhibitor factor 1 | 1.82 | |
| S100A1 | S100 Ca++binding protein | 1.77 | |
| S100B | S100 Ca++binding protein | 1.72 | |
| C4BPA | C4 binding protein A | 1.73 | |
| GPX3 | Glutathione peroxidase 3 | 1.62 | |
| ADAMTSL2 | AdamTS-like 2, microfibril assembly | 1.55 | |
| SCRG1 | Stimulator of chondrogenesis | 1.48 | |
| CHAD | Chondroadherin | 1.47 | |
| MGP | Matrix Gla protein | 1.47 | |
| SERPINF1 | Pigment epithelium derived factor | 3.60 | |
| RNASE1 | Pancreatic style secretory RNAse | 3.56 | |
| SPARCL1 | Sparc-like protein 1 (hevin) | 3.11 | |
| POSTN | Periostin | 2.79 | |
| PLTP | Phospholipid transfer protein | 2.26 | |
| IGFBP4 | IGF binding protein 4 | 2.23 | |
| SFRP1 | Secreted Frizzled related protein 1 | 2.19 | |
| CLEC3B | Tetranectin | 2.07 | |
| TGFBI | TGF beta induced protein | 2.03 | |
| DKK3 | Dickkopf 3, Wnt inhibitor | 2.00 | |
| TNC | Tenascin C | 1.80 | |
| TIMP3 | Tissue inhibitor of metalloproteinases 3 | 1.67 | |
| CRTAC1 | Cartilage acidic protein 1 | 1.55 | |
| ASPN | Asporin (serine leucine-rich matrix protein) | 1.47 |