Table 1.
Summary of patient characteristics
| Feature | CAIRO | LUMC | CAIRO2 | AMC-AJCCII-90 | |
|---|---|---|---|---|---|
| No. of patients | 504 | 270 | 472 | 76 | |
| Sample information | TMA or slide | TMA | TMA | TMA | Whole slide |
| Core diameter | 2 mm | 0.6 mm | 2 mm | – | |
| Staining | CK | CK | CK | H&E | |
| Age (years) | 62.8 (41–78) | 65.4 (39.3–86.4) | 61.3 (40.3–76) | – | |
| Sex | F | 181 | 135 | 197 | 40 |
| M | 322 | 135 | 275 | 36 | |
| Stage | 1 | 0 | 43 | 0 | 0 |
| 2 | 0 | 99 | 0 | 76 | |
| 3 | 0 | 75 | 0 | 0 | |
| 4 | 504 | 50 | 472 | 0 | |
| Event status | None | 61 | 91 | 104 | 60 |
| Yes | 443 | 179 | 368 | 16 | |
| Treatment arma | A | 252 | – | 243 | – |
| B | 252 | – | 229 | – | |
| Mutational information | |||||
| MSI | MSI-H | 12 | 29 | 8 | 23 |
| MSS/MSI-L | 423 | 189 | 464 | 53 | |
| KRAS/BRAF | mut | 174 | – | 218 | 31 |
| wt | 139 | – | 227 | 45 | |
| CMS classification | |||||
| CMS classifier | IHC | IHC | IHC | GeneExp | |
| CMS available | 401 | 214 | 340 | 76 | |
| Subtype | CMS2/3 | 247 | 96 | 162 | 35 |
| CMS4 | 142 | 89 | 170 | 15 | |
TMA tissue microarray, CK pan-cytokeratin, H&E haematoxylin and eosin, MSI microsatellite instability, CMS Consensus Molecular Subtype
aTreatment arms: CAIRO—sequential (Arm A) versus combination (Arm B) capecitabine, irinotecan, and oxaliplatin. CAIRO2—capecitabine, oxaliplatin, and bevacizumab (Arm A) with cetuximab (Arm B)