In 1999 Isis' (nasdaq: ISIS - news - people ) long-awaited drug for Crohn's disease, a severe intestinal disorder, failed to outperform a sugar pill in a pivotal test with 300 patients.

FORBES: Antisense and Sensibility

In an initial test on 200 insomniacs, it reduced sleeping pill consumption by 40% in five weeks.

FORBES: Sleep Talking

Instead of being handed a hit or miss pill, your doctor will do a test and then prescribe a drug that will work, because it will be specifically designed to suit your particular genes.

BBC: Scientists hope to develop individually-targeted drugs