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.
Increased MMP-9 expression associated with poor prognosis in CRC
As reported in the World Journal of Surgical Oncology, the expression of MMP-9 in colon cancer tissues was increased compared to distal normal mucosa (69.1% vs. 2.9%). Increased MMP-9 expression was associated with lymph node metastasis, Duke stage, and decreased survival.
Calcium reduces CRC risk
As reported in the International Journal of Cancer, there is an 8% reduction in CRC risk with each 300 mg/d increase in calcium intake based on 15 studies involving 12305 patients who took 250-1900 mg of calcium/day over a 3.3-16 year follow-up period. The beneficial effect extended beyond 1000 mg/d.