Infliximab is effective in corticosteroid-refractory ulcerative colitis
As reported in the Journal of Crohn’s & Colitis, treatment of corticosteroid-refractory ulcerative colitis patients with 3 doses of infliximab (n=113) resulted in short- (3 months) and long-term (12 months) colectomy rates of 18.6% and 25.6%, respectively. The RR of colectomy in patients with an elevated CRP and severe endoscopic lesions was 2.15 and 5.13, respectively.
KIT mutations associated with poor prognosis in GISTs
Based on a meta-analysis (18 studies; n=1487) reported in the World Journal of Surgical Oncology, KIT mutations in patients with gastrointestinal stromal tumors (GISTs) are associated with larger tumors (> 5 cm), higher mitotic activity (> 5), more frequent recurrences (OR = 2.06), more frequent metastases (OR = 2.77), and worse 3-year overall survival (OR = 0.47) compared to patients with PDGFRA mutations or wild-type.
SIRT3 expression improves prognosis in gastric cancer
As reported in the World Journal of Surgery, SIRT3 expression improves the prognosis in patients with gastric cancer (n=221). Specifically, the 5-year OS was 51.2% and 39.1% in patients who do and do not express SIRT3, respectively. The 5-year DFS was 49.6% and 38.0% in patients who do and do not express SIRT3, respectively. Patients who do not express SIRT3 are characterized by increased poor cellular differentiation, increased diffuse-type Lauren’s histology, and increases scirrhous-type stromal reactions, suggesting the SIRT3 functions as a tumor suppressor.