Objective = 40×. Table 3 Immunoreactivity of VEGF, and the number of patients Category Number of patients (%) alive/dead Percentage of positive tumour cells learn more (P) <1% 2 (3.6%) 2/0 1-25% 25 (44.6%) 17/8 26-50% 18 (32.1%) 10/8 51-75% 7 (12.5%) 4/3 76-100% 4 (7.1%) 2/2 Staining intensity (I) Negative 2 (3.6%) 2/0 Weak 11 (19.6%) 10/1 Moderate 24 (42.9%) 12/12 Strong
19 (33.9%) 11/8 Expression score (P+I) Low (0-2) 12 (21.4%) 12/0 High (3-7) 44 (78.6%) 23/21 Correlation of VEGF expression with clinicopathological characteristics and survival VEGF expression and clinicopathological characteristics are detailed in Table 4. Fisher’s exact test was performed. We did not observe significant correlation between VEGF expression (high/low) and gender (P = 0.7477), age >18 months/≤ 18 months old (P = 0.2701), or histology (favourable/unfavourable) (P = 0.27). Also, there was no significant difference in VEGF expression between the transplant and non-transplant patients (P = 0.7378). Table 4 VEGF expression and other clinicopathologic factors Characteristics VEGF score Low High
No. patients Total number 12 44 Gender Male 7 28 Female 5 16 Age >18 months old 4 32 ≤ 18 months old 8 12 Histologic subtype Stroma-rich Well differentiated 1 2 Intermixed 3 7 Focal nodular 1 2 Stroma-poor Undifferentiated 6 24 Differentiating 1 9 Histology Favourable 5 18 Unfavourable BMS-777607 chemical structure 7 26 Stage 1 1 2 2 7 8 3 3 17 4 0 17 4s 1 0 Transplant No 9 30 Yes 3 14 Survival Alive 12 23 Dead 0 21 There was significant association between advanced disease stage and high VEGF expression as determined by Fisher exact test (P = 0.0014), and significant
correlation between high VEGF expression score and high tumour stage as determined by Spearman’s coefficient of rank, (rho = 0.453, P = 0.0005). The VEGF expression score was significantly higher in the group Depsipeptide purchase of non-survival patients compared to the group of patients that survived more than 5 years, as determined by Mann Whitney test (P < 0.0001). Also, significant correlation between VEGF expression and survival was determined by Spearman's coefficient of rank (rho = -0.472, P = 0.0002). All patients with low VEGF expression score survived. Interestingly, in the group of patients ≤ 18 months old we did not observe any correlation between VEGF expression and tumour stage (Spearman's coefficient of rank rho = 0.17, P = 0.46), opposite to the patients > 18 months old (rho = 0.635, P < 0.0001). In the same group of patients (≤ 18 months old), we also did not observe any correlation between VEGF expression score and survival (Spearman’s coefficient of rank rho = 0.19, P = 0.42; Fisher’s exact test P = 1.