No statistically significant difference in relative expression levels of Wnt target genes AXIN2, DKK1 and CCND1 was identified between either CTNNB1 wild-type, S45F or T41A mutated DTF samples.
We demonstrated that mutated DFs (T41A or S45F) and WT are two distinct molecular subgroups with regard to β-catenin stability, α-catenin affinity, and gene expression profiling.
The other 3 patients showed a CTNNB1 mutation in the original desmoid-type fibromatosis (2 with a T41A and 1 with an S45F mutation), which was absent in the sarcoma.