Glioblastoma
The most common length of survival following diagnosis is 12 to 15 months, with fewer than 3% to 5% of people surviving longer than five years. Without treatment survival is typically 3 months.
Merkel-cell carcinoma
Overall, the 5-year survival rate for Merkel cell carcinoma is around 60%. It varies depending on the stages of the cancer. In general, a higher cancer stage correlates with a lower survival rate. For example, National Cancer Data Base has survival rates collected from nearly 3000 MCC patients from year 1996-2000 with 5-year survival rates listed as follows:
Stage IA: 80%. Stage IB: 60%.
Stage IIA: 60%. Stage IIB: 50%. Stage IIC: 50%.
Stage IIIA: 45%. Stage IIIB: 25%.
Stage IV: 20%.
5 yr survival may be 51% among patients with localized disease, 35% for those with nodal disease, and 14% with metastases to a distant site.