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This correction just came out. In this article about Avastin for GBMs from 2008, they used the wrong units for the dosage calculation. The correct units are mg per kilogram, not the mg per square meter of body surface area that they originally reported. The difference is huge. For a typical 200 pound 6' tall patient, at 5mg per square meter, the incorrect dose would be about 10mg of Avastin. Using the correct formula, 5mg per kg, it would be about 450 mg. Note that the correct dose of Avastin is not really known. Some use 5mg per kg, some 10mg per kg and some higher doses.