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Why not bring medications and their use out of the dark...
Transcript of Why not bring medications and their use out of the dark...
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Why not bring medications and their use out of the dark ages?
Jake J. Thiessen, B.Sc.(Pharm), Ph.D.
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Presentation Outline
Identity Identity
“Therapeutic Enlightenment by Harnessing Comprehensive Identity”
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Who Am I?
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“Obligatory Identity”
“Crunch time: Come Tuesday, all Canada-U.S. air travellers must
have passport”
The chance of two iris (irides) being identical is 1 in 1078
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Elements of “Who I am”
DemographicGeneticAnatomicalStructuralOrganizationalCulturalSpiritualEmotional
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James J. Lynch, PhDDirector of the Life Care Health Center in Baltimore, Maryland (www.lifecarehealth.com)
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Elements of “Who I am”
DemographicGeneticAnatomicalStructuralOrganizationalCulturalSpiritualEmotional
PhysiologicChronologicalHormonalCyclicalElectricalChemicalBiochemicalEtc.
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Identity “Force Vectors”
Genetic
Physiologic
Behavio
r
Cycles Anatomic
Emotional
Biochemical
Organiza
tional
Chemical
Etc.
Chemical
Magnetic“Radia
tion”
Biolo
gic
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Not fixed or constant.An individual, who reflects the complicating interaction between intrinsic and environmental forces.Surprisingly “elastic”.Amazingly homeostatic.
Innately tracking towards a prescribed harmony wherein the vector sum of all intrinsic and environmental forces adds up to zero.Ps 139:14 ….. I am fearfully and wonderfully made…
Who Am I?
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Focus: Chemical Environment
Beneficial vs. harmfulNatural vs. synthetic
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Source: Draves AH. Walker SE: Canadian Journal of Clinical Pharmacology. 10(3):114-8, 2003
St. John’s WortFifty-four US and Canadian products analyzedLabel claim varied widely: Capsules from 0% to 108.62%; Tablets from 31.34% to 80.18%; Tinctures from zero to 118.58 microg/ml. Only two products were observed to have a total naphthodianthroneconcentrations within 10% of their label claimOn average, most labels overestimate the hypericin and pseudohypericin content by a factor of almost two
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Source: Good Housekeeping, November, 2006, pp 87-91
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Focus: Chemical Environment
Natural vs. syntheticBeneficial vs. harmfulEssential vs. optional (e.g. vitamins, minerals, etc.)Endogenous vs. foreignSelf-selected vs. prescribedNutritional
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Early Development of Medicines"Ancient humans have experimentally sampled many kinds of plants in their search for nourishment. Plants that were palatable were used for food; those with toxic or unpleasant effects were avoided or used against enemies; others that produced physiological effects such as perspiration, defecation, healing, or hallucination were saved for medicinal purposes and divination. Over a period of thousands of years, people learned to use a variety of plants as medicines for different ailments."
Quote: Grolier Multimedia Encyclopedia
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Origins of Medicines: The Story of Aspirin400 B.C. Hippocrates – bark and leaves of willow tree to relieve pain and fever
“Salicin” – place bark or leaves in water for 8-10 hours
1832 – a German chemist experiments with salicinand creates salicylic acid [purification]1897 - Felix Hoffman, a chemist at Bayer in Germany modified sal. acid to produce acetylsalicylic acid (ASA) to treat his father’s rheumatism. It was embraced by Bayer and called Aspirin1899 – Bayer distributes Aspirin to physicians1915 – Aspirin is available without a prescription1948 – Dr. Lawrence Craven notices that the 400 men he prescribed Aspirin hadn’t suffered heart attacks1980 – FDA approves Aspirin to reduce risk of stroke
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The Story of Aspirin (cont’d)
1982 – John R. Vane (British Pharmacologist) receives Nobel Prize for showing Aspirin acts by inhibiting prostaglandin synthesis1985 – FDA approves Aspirin to prevent heart attacks1996 – FDA directive – use Aspirin if suspected heart attackPrevention of colon cancer – COX inhibitorAspirin resistance emerges – April 2003 –Creative Clinical Concepts in Denver brings out “AspirinWorks” to test for responsiveness to the drug; need to tailor Aspirin for some peopleField of similar compounds opens up
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A Company’s HistoryEli Lilly and Company was founded in May 1876 by Colonel Eli Lilly in Indianapolis, Ind., a 38-year-old pharmaceutical chemist. Lilly was frustrated by the poorly prepared, often ineffective medicines of his day. He founded a company that manufactured pharmaceutical products of the highestpossible quality. His developed only medicines that would be dispensed at the suggestion of physicians rather than by eloquent sideshowhucksters. Lilly pharmaceuticals would be based on the best science of the day.
Source: Eli Lilly Historical Information
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Historical Developments“One June 30, 1906, a broiling day in Washington, President Theodore Roosevelt went to the Capitol to sign into law nearly a hundred bills hurried through the Congress as its session came to an end. Among them was one passed the day before by both Senate and House in a form agreed to in conference committee, the Food and Drugs Act. Although a latecomer to the cause of a pure food law, Teddy Roosevelt had used his weight decisively in 1906 to ensure that this time Congress would not adjourn, as so often before, leaving such legislation languishing.” FDA
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The Drug Development ProcessDisco
very
and
Scr
eening
Pre/Non-Clinical Research
Disco
very
and
Scr
eening
•Synthesis•Purification•Analytics•Phys.Chem.•Etc.
AnimalTesting
Long Term
Short Term
Clinical StudiesPre/Non-Clinical Research
Disco
very
and
Scr
eening
•Synthesis•Purification•Analytics•Phys.Chem.•Etc.
AnimalTesting
Short Term
Long Term
Phase III
Phase I
Phase II
File the IND/CTA
Clinical Studies NDS/A ReviewPre/Non-Clinical Research
Disco
very
and
Scr
eening
•Synthesis•Purification•Analytics•Phys.Chem.•Etc.
AnimalTesting
Short Term
Long Term
Phase III
Phase I
Phase II
File the IND/CTA
File the NDS/A
Clinical Studies NDS/A Review Post-ApprovalPre/Non-Clinical Research
Disco
very
and
Scr
eening
•Synthesis•Purification•Analytics•Phys.Chem.•Etc.
AnimalTesting
Short Term
Long Term
Phase III
Phase I
Phase II
Phase IV
•Prescription Drug
•Marketing •Advertising•Surveillance•Adverse
ReactionsReporting
•Inspections•Surveys
File the IND/CTA
File the NDS/A
APPROVAL!!!
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Review Period(Agency)
1 - 2 years
Clinical Development(Phase I -III)5 - 7 years
Preclinical/Discovery4 – 6 yearsAverage time to approval of new compounds
12 years
Time to Develop and Registera New Pharmaceutical
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What are some Drug Development Strategies?
Exclusivity treatment goalLarge target patient populationMinimize risks – SAFE!Efficient – One size fits all.Efficient – production simplicityPrescribing simplicityOther
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What are some Benefits of this “System”?
StandardizationObjective testing of discoveriesHistorical inventory of informationAuthenticity and purity of pharmaceuticalsRigid manufacturing controls (GMP)
Consistency of the productsStability to ensure shelf-lifeOrganizational requirements
Developments under ethical controlControlled rhetoric (advertising)
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0 4 8 12 16
COMPOUND SUCCESS RATES BY STAGES
Discovery(2-10 Years)
Preclinical TestingLaboratory and animal testing
Phase I20-80 healthy volunteers used to determine safety and dosage
Phase II100-300 patient volunteers used to look for efficacy and side effects
Phase III1,000-5,000 patient volunteers used to
monitor adverse reactions to long-term use
Approval
Additional Post-marketing Testing
Compound SuccessRates By Stage
________________5,000 – 10,000
screened
250Enter pre-clinical
testing
10Enter clinical testing
1Approval
Years
Source: Pharmaceutical Research and Manufacturers of America, c2002-2003 [Internet].Industry Profile 2002, Chapter 2. Research and Development – The Key to Innovation.
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Cost: $880 Million TotalApproximate Cost ($M)
165
20540
120
165
260
Drug R & D Is Expensive and Time-Consuming
Pharmaceutical R&D Statistical Sourcebook 2000..
Biology
Target ID Target Validation
Chemistry
Screening Optimization Clinical
Development
Preclinical
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What is the Overall Impact of Medicines on Society?
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Leading Benefits of Pharmaceuticals
Antibiotics for numerous diseasesHeart drugs that changed outcomesAnticancer drugs (eg. Testicular)Breakthroughs in asthma treatmentPain relieving medicinesRevolutionary discoveries permitting successful transplantsNumerous others
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Source: PriceWaterhouseCoopers Report - 2001
Positive Outcome of Pharmaceuticals
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What About the Disappointments?
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Unhappy Outcomes
Unfulfilled promises; unsuccessful treatmentsTrial and Error “experimentation”High incidence of adverse effects – “adverse drug reactions (ADRs) is estimated to cost the US society 100 billion USD and over 100 000 deaths per year”Worrying multiplicity of treatments, notably in the elderlyCost in paying for medication useAlarming escalation in the drug budgetsOthers
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Unhappy (Ineffective) Outcomes
Source: The Case for Personalized Medicine: Personalized Medicine Coalition Washington, DC 20005
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Concerns About Expenditures
Source: Statistics Canada
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Why are Medicines Sometimes Withdrawn due to Catastrophic
Outcomes?
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Clinical Trial Size Per NDA[Studies to Test Safety and Efficacy]
1,321
3,2333,567
4,237
1,576
0
500
1,000
1,500
2,000
2,500
3,000
3,500
4,000
4,500
1977-80 1981-84 1985-88 1989-92 1994-95
Source: Boston Consulting Group, 1993; Peck, C., “Drug Development: Improving the Process,”Food Drug Law Journal, Vol. 52, 1997.
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What is the probability that at least one serious adverse event will surface?
N
Event Rate 300 3 000 30 000 300 000
1 / 100 95% ~ 100% ~ 100% ~100%
1 / 1 000 25% 95% ~ 100% ~ 100%
1 / 10 000 2% 25.9% 95% ~ 100%
1 / 100 000 0.3% 2.9% 25.9% 95%
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Evidence of Dark Ages?
“One-size fits all” to optimize efficiencyGeared to mass production“Silver bullet” expectationsDumbed-down moleculesDogmatic attitudesRigid regulatory system
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“Medicine is a science of uncertainty and an art of
probability.”
Sir William OslerCanadian Physician
1849-1919
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Is There Enlightenment?
Can we do Reduce the Unhappy Outcomes?
What are Potential Solutions?
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Central Tenant:
“One size fits all” thinking is at the heart of the problemPersonalized treatment is the solution“Personalized” entails comprehensive identity, optimized pharmacotherapy and feedback monitoring
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Customization/Individualization
Source: COMPREHENSIVE REVIEWS IN FOOD SCIENCE AND FOOD SAFETY—Vol. 3, 152-159 (2004)
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BarrierBiophase
Blood/Int. fluid
Response to Medications
Receptor
Homeostasis
Endogenous
AgonistDrug Drug
Response
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Toxic
Sub-therapeutic
M Rowland and TN Tozer: Clinical Pharmacokinetics, 3rd Ed. 1995; p. 6
Accepted
Therapeutic
Window
“Standard” Dose
Phenytoin Patient Observations
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Identity “Force Vectors”
Genetic
Physiologic
Behavio
r
Cycles Anatomic
Emotional
Biochemical
Organiza
tional
Chemical
Etc.
Chemical
Magnetic“Radia
tion”
Biolo
gic
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Effective Personalized Medicine“Personalized Medicine” reduces trial-and-error by suitably tailoring the use of drugs through genomic, proteomic, metabonomic, and environmental (-omic) characteristics of a patient.
Predicts responders and non-respondersPersonalized Medicine, via effective biodiagnostics, monitors and harnesses comprehensive identity to optimize treatment. Personalized Medicine employs Bioinformatics and Information-Based Medicine.
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Optimizing PharmacotherapyThe appropriate individual patientAssembling the right identity informationUsing the most appropriate drug(s)In the correct contextThe optimal doseThe correct pharmaceutical productThe appropriate routeThe correct dosing scheduleUsing effective communicationAchieving the best complianceMaking the right outcome assessment
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Limitations of Genetic Identity
Source: Goodman & Gilman's The Pharmacological Basis of Therapeutics - 11th Ed. Figure 4-1; Originally by E. S. Vesell
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Optimizing TherapyRequires
Supporting Technology
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Automobile Sensor Technology
A modern automobile has about 50 sensors.
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•There are 117 miles (188 km) of electrical wiring in a 767-300ER.
•Also, about 10,000 sensors are constantly recording information, not only to inform pilots about the plane's performance but also to forecast mechanical problems that can be corrected during routine maintenance
Analogy of the BiodiagnosticFuture for Pharmacotherapy
“Signature Sensors”
“Flight Monitoring/Control Sensors”
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The Requirement:Biodiagnostic sensors that
can accurately, conveniently and cost-effectively monitor the complex individual identity.
The tools of informatics.Translation of the
information to provide optimal, individualized therapy.
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Is Such a Future Possible?
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Identity
Sensor
“Analysis”
Therapy
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Example: Glucose Sensor
Glucowatch
Animas Corporation, which is now a Johnson & Johnson company, purchased the intellectual property and all of the assets of the original manufacturer of the GlucoWatch G2 Biographer, Cygnus Inc. in Redwood City, California. Animas continues to sell the GlucoWatch G2 Biographer in the U.S. and the U.K. You can contact Animas by calling (877) 937-7867 or visit the company's webpage at http://www.glucowatch.com/. A “Special price offer expires April 30, 2006 or when 10,000 G2 Biographers and 500,000 AutoSensors have been sold.” Until then the price of the G2 Biographer is $299.99 (regularly $872.50), and 16 AutoSensors is $63.99 (regularly $149.99).
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Dermal Detection Sensor
Source: PAUL W. BARONE, SEUNGHYUN BAIK, DANIEL A. HELLER AND MICHAEL S. STRANO: Near-infrared optical sensors based on single-walled carbon nanotubes. Nature Materials VOL 4: 86-92, JANUARY 2005
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Source/After: http://www.micohealth.com
Continuous Monitoring Device
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Fig. 1. A microchip-based electronically controlled drug release device (45). Panel A. A prototype implantable microchip-based device forcontrolled release: the microchip is mounted in a biocompatible case containing electronics, power source, and antenna for wirelesscommunication (45). Panel B. Drug Delivery/Biosensor Array: A microchip for controlled release showing the reservoir array and the shapeof single reservoirs for delivery or sensor applications (45). Panel C. A microchip for controlled release: one side is filled with drug (left); theother side (right) exhibits circuitry and membranes (source: MicroCHIPS, Inc.; photo credit: Dana Lipp Imaging). Panel D. In vivo Release YLeuprolide (Model Peptide); n = 6 dogs, error bars are T 1 SD (45). Each reservoir on the 15 mm 15 mm 1.0 mm microchip was filled with25 2g leuprolide in 125 nL solution, followed by lyophilization and a secondary fill of 125 nL of molten polyethylene glycol. The backs of thefilled reservoirs were individually sealed with solder. One device (approximate dimensions for the device 4.5 cm 5.5 cm 1 cm, volumeapproximately 30 mL) was implanted into the subcutaneous tissue of each dog. Dosing was conducted at weekly to monthly intervals over sixmonths. The devices were programmed by RF telemetry to open selected reservoirs, thereby initiating drug release.Mark Staples, Karen Daniel, Michael J. Cima, and Robert LangerPharmaceutical Research, Vol. 23, No. 5, May 2006
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The Challenge:A Quantum Advance in Healthcare Certaintyand the probability of optimal treatment outcomesviaResearch, Technology, Innovation and Education
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Why not bring medications and their use out of the dark ages?
“Therapeutic Enlightenment by Harnessing Comprehensive Identity”
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The End