Some really relevant information on Burzynski, "antineoplastons", their nature and effectiveness:

Stanislaw Burzynski and "Antineoplastons"

By Saul Green, Ph.D.

http://www.quackwatch.com/01QuackeryRelatedTopics/Cancer/burzynski1.html

On Burzynski's "clinical trials", their methodology, quality and motive:

The Antineoplaston Anomaly:

How a Drug Was Used for Decades in Thousands of

Patients, With No Safety, Efficacy Data

The Cancer Letter, Vol. 24, No. 36, Sept. 25, 1998.

http://www.quackwatch.com/01QuackeryRelatedTopics/Cancer/burzynski2.html

And, on the grand conspiracy to suppress cancer cures, check out

Is There a Conspiracy to Suppress Cancer Cures?

Steven Novella, M.D.

Stephen Barrett, M.D.

http://www.quackwatch.com/01QuackeryRelatedTopics/Cancer/conspiracy.html

And then take a look at The Millenium Project's Cancer 100 challenge and ask why it is that quack cancer treatments have never been known to achieve such a simple standard of proof:

http://www.ratbags.com/rsoles/cancer100.htm