| PROJECT | CENTERS / COUNTRIES | WEST EUROPE | EST EUROPE | LATIN AMERICA | NORTH AMERICA | OTHERS | TOTALS |
| MTX Pavia | 56 / 20 | 518 | 39 | 66 | 8 | 2 | 633 |
| CHAQ CHQ JIA | 32 / 32 | 2101 | 614 | 379 | 0 | 141 | 3235 |
| CHAQ CHQ Healthy | 32 / 32 | 2176 | 514 | 524 | 0 | 195 | 3409 |
| JSLE CS | 108 / 39 | 269 | 82 | 150 | 35 | 21 | 557 |
| JDM CS | 95 / 36 | 166 | 31 | 78 | 17 | 3 | 295 |
| CSA | 56 / 22 | 213 | 20 | 25 | 85 | 1 | 344 |
| Antares | 16 / 1 | 213 | 0 | 0 | 0 | 0 | 213 |
| Vasculitis | 93 / 36 | 936 | 139 | 233 | 6 | 85 | 1399 |
| MTX Withdrawal | 61 / 29 | 195 | 76 | 80 | 0 | 13 | 364 |
| JDM Trial | 53 / 20 | 88 | 10 | 34 | 6 | 0 | 138 |
| EPOCA | 119 / 49 | 5997 | 3661 | 1313 | 773 | 2175 | 13919 |
| PHARMACHILD | 84 / 31 | 5535 | 2352 | 665 | 0 | 248 | 8800 |
| EUROFEVER | 108 / 41 | 3354 | 371 | 70 | 54 | 185 | 4034 |
| ABIRISK Registry | 24 / 12 | 122 | 33 | 0 | 0 | 0 | 155 |
| MAS | 90 / 31 | 659 | 99 | 74 | 148 | 131 | 1111 |
| JIA classification | 19 / 9 | 69 | 62 | 0 | 0 | 2 | 133 |
| The STARS trial | 1 / 1 | 3 | 0 | 0 | 0 | 0 | 3 |
| TOTAL | 1047 / 441 | 22614 | 8103 | 3691 | 1132 | 3202 | 38742 |