The databases of clinical trials are a collection of clinical data abaut the ongoing clinical experiments (using new drugs to treat cancer). These tests are designed to determine the efficacy and safety of the drug. For patients, especially oncological patients, participating in this study can be a great opportunity, when conventional treatments are ineffective: the person may be assigned to receive new drug, which can slow the disease process or lead to a cure.


There are several stages of clinical trials:


Phase I - an examination conducted on small numbers of healthy volunteers (20-80 people), to determine the safety, toxicity, pharmacokinetics and pharmacodynamics of drug;

Phase II - conducted on a larger group of people (20-300), to determine the clinical efficacy of therapy;

Phase III - carried out on large groups of patients (300-3000 people), designed to provide complete data about the effectiveness of therapy;

Phase IV - research conducted after drug registration, designed to provide accurate profile of drug safety (side effects, interactions, use in children, the elderly, or pregnant women).


Any patient reporting to the clinical trial is a volunteer and has the possibility of resignation from the study at any stage. The patient has the right of access to accurate, reliable information about therapy and its effects on his health during the trial.