Lipinski rules for carbon dating

This study also considered NCEs in the preclinical stage, reviewing products nominated to enter preclinical toxicology studies before progressing to Phase I.

Overall rates of progression from the preclinical stage through to Phase IV were low.

While many drivers of attrition were identified, non-clinical toxicity, and interestingly, portfolio rationalization were cited as the most common causes of failure in drug development.

The program is packaged with a number of pre-programmed molecular properties that can be used for filtering.

Sequencing of the human genome at the turn of the 21st century promised a new era of opportunities for pharma, raising expectations as well as R&D expenditure.

But while the pressure to innovate is greater than ever before, the FDA is actually approving 25% fewer drugs than it did in the 1990s. Why are pharmaceutical companies spending more money and time (often up to 15 years) developing new chemical entities (NCEs), only to see them fail before reaching the market? Several studies have sought to understand the key causes of attrition in drug discovery and development.

Bringing together data from multiple pharmaceutical companies, these investigations have revealed some interesting findings.

A recent study by Waring and colleagues analyzed the main causes of attrition in drug development based on a review of 812 NCEs under development by Astra Zeneca, Eli Lilly, Glaxo Smith Kline and Pfizer.

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When combined with genomics data, these networks can provide a powerful set of analytics to obtain deeper insights into disease pathways.

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