Table 2.
Adapted from Abdel-Rahman et al [13]
| Type X N=18 tumors | Lynch N=31 tumors | Sporadic from literature | P-value for Type X vs Lynch | P-value for Type X vs Sporadic | |
|---|---|---|---|---|---|
| Nuclear beta-catenin | 39% | 81% | 95% | 0.005 | 0.000005 |
| CTNNB1 mutations | 0% | 29% | 6% | 0.007 | NS |
| CDX2 alteration: decreased protein | 11% | 6% | 16% | NS | NS |
| KRAS exon 2 mutations | 17% | 26% | 30% | NS | NS |
| BRAF V600E | 4% | 0% | 3% | NS | NS |
| P53 protein stabilization | 44% | 13% | 52% | 0.04 | NS |
| TP53 mutation | 26% | 13% | 52% | NS | 0.01 |
| Chromosomal instability by CGH | 44% | Not done | 79% | 0.00006 |
NS=not significant; CGH= comparative genomic hybridization