Figure 1. Alterations in tumor desmoplasia following combined Vismodegib and Erlotinib treatment.
A, H&E staining of tumors from two patients with undifferentiated pancreatic adenocarcinomas demonstrates changes in the stromal reaction following treatment. There was a decrease in the amount of collagen deposition in the tumor from patient 3 and a decrease in the overall percentage of desmoplasia in the tumor from patient 4. B, Quantitative RT-PCR of COL1A1 gene expression from paired patient samples. The H&E stained sample from patient 4 in A correlates with patient 4 in B. C, Pathology review of H&E of biopsies from paired patient samples characterizing extent of desmoplasia.