357x Filetype PPTX File size 1.18 MB Source: eh.uc.edu
Topics
Introduction of pharmaceutical industry
Drug development process and clinical trials.
Biostatistics in clinical trials:
◦ Study design
◦ Clinical data
◦ Statistical modeling
Other topics
STATISTICS IN DRUG DEVELOPMENT 2
Drug
Drug definition:
according to the Food, Drug, and Cosmetic Act (FD&C Act):
(1): a substance recognized in an official pharmacopoeia or formulary
(2): a substance intended for use in the diagnosis, cure, mitigation,
treatment, or prevention of disease
(3): a substance other than food intended to affect the structure or function
of the body
(4): a substance intended for use as a component of a medicine but not a
device or a component, part, or accessory of a device Novartis (60.9B),
Simple version: A Chemical Substance that Interacts with a Living System
and Produces a Biological Response
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Drug
“New Drug” vs “Generic Drug”
New Drug patents expire 20 years from the date of filing. Many other
factors can affect the duration of a patent.
Since the company applies for a patent long before the clinical trial to assess a drug’s
safety and efficacy has commenced, the effective patent period after the drug has finally
received approval is often around seven to twelve years.
New drugs (brand names) and generic drugs have the same
pharmacological effects (dosage, intended use, effects, side effects,
route of administration, risks, safety, etc.) and pharmacokinetics.
For example: Glucophage vs. metformin.
“Prescription Only” vs “Over the Counter”
Other drugs (orphan drugs), medical devices, vaccine
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Pharmaceutical Industry
List of 2013 top biotech and pharmaceutical companies (Revenue):
Johnson & Jonson (71.3B),
Novartis (60.9B),
Roche (52.4B),
Pfizer (51.6B),
Sanofi, Merck, GlaxoSmithKline, AstraZeneca, Eli Lilly, Abbott Lab.
List of 2013 top biotech and pharmaceutical companies (Net income):
Pfizer (US, 22B),
Johnson & Jonson (13.8B),
Roche (Switzerland, 12.B),
Novartis (Switzerland, 9.5B), GlaxoSmithKline (UK, 9B), Sanofi (France,
5.1B), Amgen (US, 5.1B), Eli Lilly, Novo Nordisk, Merck.
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Pharmaceutical
Industry: Drug
Example of Blockbuster drugs from AstraZeneca:
AstraZeneca's Nexium (heartburn and acid reflux medication)
Sale: 5B (2009), 5B (2010), 4.4B (2011), 3.9B (2012),
6.14B (2013, the top 2nd)
Patent expired May 2014. AstraZeneca will not release an OTC drug.
AstraZeneca's Crestor (indication: cholesterol)
Sale: 5.3B (2013, the top 4th). Patent is going to expire in 2016.
Example of Blockbuster drugs from Pfizer:
Lipitor (Pfizer, indication: cholesterol) had sale Q3/2012 as $0.186B. The
patent expired in November, 2011.
Lipitor sales in 2010: $10.7B for the year.
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