Back in October, a couple of articles were published in the Journal of Thoracic Oncology that described results in a compassionate use program with Tarceva (erlotinib), one coming out of Asia, and the other out of Europe.  These trials together enrolled thousands of patients who then received single agent Tarceva, and while the results were in keeping with our expectations, it provides an occasion to consider the merits of compassionate use programs for new agents in oncology.  (For the basics of phases of clinical trials and drug development, check out this review post on the subject.)

Compassionate use programs are generally initiated with agents that have already undergone fairly extensive testing but are not yet commercially available for routine use.  They remain a sensitive topic, since for some patients these new drugs may be very helpful, and a much wider range of patients hold out tremendous hope that a new drug not yet commercially available will emerge as remarkably helpful for them.  Providing a treatment at no charge that would likely to be quite expensive once it’s approved, the advantages to patients are readily obvious.

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We are all interested in having the promising new agents that we hear about in news stories emerge through clinical trials to become a proven, valuable anti-cancer agent in human patients that becomes commercially available. But that process takes a very significant amount of both money and time. One recent and rather famous book, The $800 Million Pill, described the drug development process and indicated that it cost several hundred million dollars to bring a new agent to market (hence the name). In addition, the common estimates are that about 1 in 1000 agents gets from drug discover to te marketplace, that it takes 10-15 to go through that process, and that about 1 in 5 agents that is tested in humans is ultimately approved for clinical use. So let’s review the highlights of the process, which is shown in a figure below:

Drug Development Overview (click to enlarge) You can see that there are many steps in the daunting process.

The figure, and a lot of the content of what I’m talking about, is covered at a very good website that is run by the Center for Drug Evaluation and Research, which is part of the US FDA. Read the rest of this entry »