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BIOBOARD - AMERICAS
Measuring the risks and rewards of drug development
New research from MIT shows that the success rates of clinical trials are higher than previously thought. The study has broad implications for investors, regulators, policymakers, and clinicians.

A new study by researchers at the Massachusetts Institute of Technology (MIT) found that nearly 14 per cent of all drugs in clinical trials eventually win approval from the FDA—an amount that is much higher than previous studies indicate. The researchers also found that approval rates for specific illnesses range from a high of 33.4 per cent for infectious-disease vaccines to a low of 3.4 per cent for cancer.

The study, published online in the journal Biostatistics, has broad implications for the ways in which investors, regulators, policymakers, and clinicians calculate the risks and rewards of investing in drug development programs. The probability of success (POS) of a clinical trial is a key input to their decisions.

"One of the main responsibilities of investors and pharma executives is risk management, hence they need to know what the chances are that a compound will transition from Phase 1 to Phase 2 to Phase 3 and, ultimately, receive FDA approval," says Andrew W. Lo, the study's senior author and director of MIT's Laboratory for Financial Engineering. "Without accurate and timely estimates, resources may be misallocated and financial returns may be misjudged, which leads to higher development costs, higher-priced drugs, and lost opportunities for investors and, more importantly, patients."

The results of the research—the largest study of its kind to date—were derived from the Citeline® dataset provided by UK-based publishing company, Informa®. The dataset contained more than 400,000 entries corresponding to 185,994 unique clinical trials of over 21,000 compounds. To analyze such a large dataset, Prof. Lo and his colleagues Chi Heem Wong and Kien Wei Siah developed automated algorithms to trace each drug development path, infer phase transitions, and compute the POS statistics within a matter of hours. To put this in perspective, generating POS estimates using over 217,000 clinical trial entries available in the ClinicalTrials.gov database would take months to years if the matching and inferences had to be done manually.

The study sheds new light on the common perception that drug approval rates have declined over time. The research team found that while approval rates did fall between 2005 and 2013, they have been trending upward since then. For example, oncology drugs had the lowest overall approval rate of 3.4 per cent; in 2015, however, this estimate increased to 8.3 per cent, partly due to the recent progress in immuno-oncology.

The study's findings also have important consequences for the future design and implementation of clinical trials. For instance, the study provides POS estimates for trials that do and do not stratify patients using biomarkers, a genetic sequence that causes, or is associated with, disease. The researchers found that trials using biomarkers tend to be more successful than those that do not. This points to the growing role of companion diagnostics in improving clinical trial success rates.

According to Prof. Lo, the study is part of an ongoing effort to help make the biomedical ecosystem more efficient. "We hope to provide this information on a regular basis—it's not just a one-shot deal," he says. "As clinical trial success rates improve for certain diseases, it's likely that more investment capital will flow into those areas. For diseases where success rates stall, public policy can play an important role by increasing research funding or providing more incentives to risk-tolerant investors and philanthropic organizations.

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APBN Editorial Calendar 2018
January:
Obesity / Outlook for 2018
February:
Searching for the fountain of youth
March:
Women in Science - Making a difference
April:
Digestive health in the 21st century - Trust your guts
May:
Asthma / Dental health
June:
Oncology / Biotech landscape in APAC
July:
Water management / Vaccination
August:
Regenerative medicine / Biotech start ups
September:
Digital healthcare / 3D printing
October:
Bones / Breast cancer
November:
Liver health / Top science research nations & institutions
December:
AIDS / Breakthrough of the year/Emerging trends
Editorial calendar is subjected to changes.
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