Use the methods outlined in CancerGuide to research your disease and find both the standard treatments and promising new treatments. Then you'll have the background to be able to tell if this new treatment is the one, and if this treatment isn't the one, you may find something else that truly is promising for your situation. What you are primarily looking for is promising results in humans, and sometimes that is indeed what has been reported. But often the media report on basic science discoveries which may sometime in the future lead to new treatments, but which are not treatments in and of themselves. They also commonly report on promising results in animals when the first human clinical trials are years away.
Most cancer treatments are specific for a particular type of cancer.
So ask yourself whether the results actually pertain to the particular beast you are fighting. Some treatments do attack a common weakness which may apply to several cancers. If there have been promising results in a cancer different from yours, and there is a particular reason to think that this treatment might work on your cancer, then you might consider being one of the first with your cancer to get the treatment. Obviously, this is only appropriate if there is no known effective treatment for what you have. Look for animal results in your cancer, or a mechanism of action which is known to fit your type of cancer.