E-Book, Englisch, 256 Seiten
Turner New Drug Development
2. Auflage 2010
ISBN: 978-1-4419-6418-2
Verlag: Springer
Format: PDF
Kopierschutz: 1 - PDF Watermark
An Introduction to Clinical Trials: Second Edition
E-Book, Englisch, 256 Seiten
ISBN: 978-1-4419-6418-2
Verlag: Springer
Format: PDF
Kopierschutz: 1 - PDF Watermark
Autoren/Hrsg.
Weitere Infos & Material
1;Sample of Published Review Comments for the First Edition of New Drug Development ;5
2;Foreword;7
3;Preface;9
4;Acknowledgments;11
5;Contents;12
6;About the Author;22
7;1 New Drug Development;23
7.1;1.1 Introduction;23
7.2;1.2 Origin and Goals of the Book;24
7.3;1.3 The Discipline of Statistics;24
7.4;1.4 A Lifecycle Perspective on Drug Development;25
7.5;1.5 Design, Conduct, and Analysis;26
7.5.1;1.5.1 Compelling Evidence;26
7.6;1.6 Drug Discovery;26
7.7;1.7 Nonclinical Development Programs;27
7.8;1.8 Clinical Development Programs;27
7.8.1;1.8.1 Ethical Conduct;28
7.8.2;1.8.2 Different Studies in a Clinical Development Program;29
7.9;1.9 Manufacturing;30
7.10;1.10 Definitions of Clinical Research and Clinical Trials;31
7.10.1;1.10.1 Clinical Research;31
7.10.2;1.10.2 Clinical Trials;32
7.11;1.11 Operational Execution;32
7.12;1.12 The Central Importance of Biological Considerations;32
8;2 The Regulatory Environment;33
8.1;2.1 Introduction;33
8.1.1;2.1.1 Goals of the ICH;34
8.2;2.2 The Food and Drug Administration;34
8.2.1;2.2.1 The Code of Federal Regulations;35
8.3;2.3 cGMP, cGLP, and cGCP;36
8.4;2.4 Regulatory Aspects of New Drug Development;36
8.5;2.5 Sponsor and Regulatory Agency Responsibilities;37
8.6;2.6 The Investigational New Drug Application;37
8.6.1;2.6.1 Review of the Investigational New Drug Application;39
8.6.1.1;2.6.1.1 The Medical/Clinical Review;39
8.6.1.2;2.6.1.2 The Chemistry Review;39
8.6.1.3;2.6.1.3 The Pharmacology/Toxicology Review;39
8.6.1.4;2.6.1.4 The Statistical Review;40
8.7;2.7 The New Drug Application;41
8.7.1;2.7.1 Statistical Review of the New Drug Application;41
8.7.2;Further Readings;42
9;3 Drug Discovery;43
9.1;3.1 Introduction;43
9.1.1;3.1.1 Small Molecule Drug Candidates;43
9.1.2;3.1.2 Biopharmaceutical Drug Candidates;44
9.2;3.2 Overview of Pharmaceutics, Pharmacokinetics, and Pharmacodynamics;44
9.2.1;3.2.1 Drug Receptors;45
9.2.2;3.2.2 The Pharmacodynamic Phase;45
9.2.3;3.2.3 The Pharmacokinetic Phase;46
9.2.4;3.2.4 The Pharmaceutical Phase;47
9.3;3.3 Medicinal Chemistry;47
9.3.1;3.3.1 Drug Molecules;48
9.3.2;3.3.2 Macromolecules, Receptors, and Drug Targets;48
9.3.3;3.3.3 Structure--Activity Considerations and Drug--Receptor Interactions;49
9.4;3.4 Cheminformatics, Bioinformatics, and Computer-Aided Molecular Design;50
9.4.1;3.4.1 Bioinformatics;51
9.5;3.5 Biologicals;52
9.5.1;3.5.1 Molecular Genetics and Proteins;52
9.5.2;3.5.2 Protein Structures;53
9.5.3;3.5.3 Recombinant DNA Technology;53
9.5.4;3.5.4 Recombinant Proteins As Drugs;54
9.5.5;3.5.5 Discovery and Development of Biopharmaceuticals;55
9.6;3.6 Moving to Nonclinical Research;56
9.6.1;Further Readings;56
10;4 Nonclinical Research;57
10.1;4.1 Introduction;57
10.1.1;4.1.1 Reduction, Refinement, and Replacement of Laboratory Animal Studies;57
10.2;4.2 Pharmacokinetics;58
10.2.1;4.2.1 Absorption;58
10.2.2;4.2.2 Distribution;59
10.2.3;4.2.3 Metabolism;59
10.2.4;4.2.4 Elimination;60
10.3;4.3 Pharmacology;60
10.3.1;4.3.1 Research Pharmacology Studies;60
10.3.1.1;4.3.1.1 Primary Research Pharmacology Studies;60
10.3.1.2;4.3.1.2 Secondary Research Pharmacology Studies;61
10.3.2;4.3.2 Safety Pharmacology Studies;61
10.4;4.4 Toxicological Studies;61
10.4.1;4.4.1 Toxicodynamics;62
10.4.2;4.4.2 Exploratory Toxicology Studies;62
10.4.3;4.4.3 Pre-FIH Regulatory Toxicology Studies;63
10.4.4;4.4.4 Post-FIH Regulatory Toxicology Studies;63
10.4.5;4.4.5 Dose Range-Finding Toxicology;63
10.4.6;4.4.6 Genotoxicity;64
10.5;4.5 Assessment of QT Interval Prolongation;64
10.5.1;4.5.1 Long QT Syndrome: Underlying Molecular Biology;65
10.5.2;4.5.2 Drug-Induced QT Interval Prolongation;66
10.5.3;4.5.3 Associated Nonclinical Testing;67
10.5.4;4.5.4 Short QT Syndrome;67
10.5.5;Further Readings;68
11;5 Designing Clinical Trials;69
11.1;5.1 Introduction;69
11.2;5.2 Classification of Clinical Trials;69
11.3;5.3 Human Pharmacology Trials;71
11.4;5.4 Clinical Pharmacokinetics and Pharmacodynamics;73
11.4.1;5.4.1 Pharmacokinetic Parameters;74
11.4.2;5.4.2 Fasting and Fed Pharmacokinetics;74
11.4.3;5.4.3 Absorption and Bioavailability;75
11.4.4;5.4.4 Distribution;76
11.4.5;5.4.5 Metabolism;76
11.4.6;5.4.6 Elimination/Clearance;77
11.5;5.5 Therapeutic Exploratory Trials;77
11.6;5.6 Therapeutic Confirmatory Trials;78
11.7;5.7 Therapeutic-Use Trials;78
11.8;5.8 Study Design;78
11.9;5.9 Ethical Aspects of Design;79
11.10;5.10 Study Design in Drug Clinical Trials;79
11.10.1;5.10.1 The Parallel Group Design;80
11.10.2;5.10.2 The Cross-over Design;81
11.10.3;5.10.3 Respective Advantages of the Parallel Group and Cross-over Designs;81
11.10.4;5.10.4 Focus on the Parallel Group Design in This Book;82
11.11;5.11 Central Principles of Experimental Design in Clinical Trials;82
11.11.1;5.11.1 Replication;83
11.11.2;5.11.2 Randomization;83
11.11.2.1;5.11.2.1 Simple Randomization;84
11.11.2.2;5.11.2.2 Block Randomization;84
11.11.2.3;5.11.2.3 Stratified Randomization;84
11.11.2.4;5.11.2.4 Cluster Randomization;85
11.11.2.5;5.11.2.5 Additional Statistical Steps to Address Randomization Issues;85
11.11.2.6;5.11.2.6 Ethical Concerns Regarding Randomization;85
11.11.3;5.11.3 Local Control;86
11.11.4;5.11.4 Good Design Simplifies and Validates the Accompanying Analyses;86
11.11.5;5.11.5 Sample Size Estimation;87
11.12;5.12 The Clinical Study Protocol;87
11.12.1;5.12.1 Inclusion and Exclusion Criteria;88
11.12.2;5.12.2 The Primary Objective;88
11.12.3;Further Readings;89
12;6 Conducting Clinical Trials I: Experimental Methodology;90
12.1;6.1 Introduction;90
12.2;6.2 Blood Pressure Measurement in Clinical Trials;91
12.2.1;6.2.1 Hypertension;91
12.2.2;6.2.2 Surrogate Endpoints in Clinical Trials;92
12.2.3;6.2.3 Arterial Blood Pressure;93
12.2.4;6.2.4 Assessing Blood Pressure Change over Time;94
12.2.5;6.2.5 A Cautionary Tale: Blood Pressure Measurement at Your Doctor's Office;95
12.2.6;6.2.6 A Cautionary Tale for Clinical Trial Blood Pressure Measurements;96
12.3;6.3 Central Labs;96
12.3.1;6.3.1 Operational Considerations;97
12.4;6.4 Core ECG Labs;98
12.5;6.5 The Case Report Form;98
12.6;Further Readings;99
13;7 Conducting Clinical Trials II: Operational Execution;100
13.1;7.1 Introduction;100
13.2;7.2 The Outsourcing Process;101
13.3;7.3 Feasibility Evaluations;101
13.3.1;7.3.1 More Extensive Feasibility Evaluations;102
13.3.2;7.3.2 Feasibility Reporting;103
13.4;7.4 Standard Operating Procedures;103
13.4.1;7.4.1 Balancing the Degree of Flexibility Within an SOP;104
13.4.2;7.4.2 The Necessity of Implementing and Maintaining SOPs;104
13.5;7.5 Project Management;105
13.6;7.6 Site and Investigator Recruitment;106
13.6.1;7.6.1 Principal Investigators;106
13.6.2;7.6.2 Responsibilities of Principal Investigators;107
13.6.3;7.6.3 Potential Principal Investigators in Private Practice Settings;107
13.6.4;7.6.4 Potential Principal Investigators at Larger Medical Institutions;107
13.6.5;7.6.5 Principal Investigator Training;108
13.7;7.7 Subject Recruitment and Retention;109
13.7.1;7.7.1 Subject Recruitment;109
13.7.2;7.7.2 Subject Retention;110
13.8;7.8 Monitoring Clinical Trials;111
13.9;7.9 Data Management;112
13.9.1;7.9.1 Data Management Plans;112
13.9.2;7.9.2 Electronic Data Capture;113
13.9.3;7.9.3 Database Development;113
13.10;7.10 A New Paradigm: Allying With Sponsors;114
13.11;7.11 Underperforming and Non-performing Clinical Trial Sites;114
13.11.1;7.11.1 Limitations of the Current Model;116
13.12;7.12 Another New Paradigm: The Site-Specific CRO;116
13.12.1;7.12.1 Synergies of a Sponsor CRO and a Site-Specific CRO Working Together;117
13.12.2;Further Readings;118
14;8 Statistical Analysis;119
14.1;8.1 Introduction;119
14.2;8.2 Types of Clinical Data;120
14.2.1;8.2.1 Numerical Variables;120
14.2.2;8.2.2 Categorical Variables;120
14.2.3;8.2.3 Parametric Tests and Nonparametric Tests;121
14.3;8.3 Descriptive Statistics: Summarizing Data;121
14.3.1;8.3.1 Measures of Central Tendency;121
14.3.2;8.3.2 Measures of Dispersion Around a Central Value;122
14.4;8.4 Inferential Statistics: Hypothesis Testing;123
14.4.1;8.4.1 The Search for Compelling Evidence;123
14.4.2;8.4.2 Variation and Systematic Variation;123
14.4.3;8.4.3 Between-Groups Variation and Within-Groups Variation;124
14.4.4;8.4.4 Comparing Between-Groups Variance and Within-Groups Variance;124
14.4.5;8.4.5 The Term Error Does Not Imply a Mistake;125
14.5;8.5 Probability;125
14.5.1;8.5.1 Likely Events Do Not Always Happen;126
14.5.2;8.5.2 Clinical Decision-Making;126
14.5.3;8.5.3 Sampling Theory;127
14.5.4;8.5.4 The Standard Error of the Mean;127
14.6;8.6 The Normal Distribution;128
14.6.1;8.6.1 Area Under the Normal Curve;130
14.6.2;8.6.2 Various Areas Under the Normal Curve;131
14.7;8.7 Analysis of Association;131
14.7.1;8.7.1 Direction of an Association;132
14.7.2;8.7.2 Degree of Closeness of an Association;132
14.7.3;8.7.3 Correlation Coefficients;132
14.7.4;8.7.4 Determining the Significance of a Product Moment Coefficient;133
14.7.5;8.7.5 The Coefficient of Determination;133
14.7.6;8.7.6 Association Does Not Necessarily Equate to Causation;134
15;9 Statistical Significance;135
15.1;9.1 Introduction;135
15.2;9.2 Creating a Research Question and Associated Hypotheses;135
15.2.1;9.2.1 The Research Hypothesis;135
15.2.2;9.2.2 The Null Hypothesis;136
15.3;9.3 Precise Expression of the Research Hypothesis and the Null Hypothesis: The Concept of Statistical Significance;136
15.4;9.4 Hypothesis Testing;137
15.5;9.5 Conducting a Statistical Test and Obtaining a Test Statistic;138
15.6;9.6 The Independent Groups t-Test;138
15.6.1;9.6.1 Degrees of Freedom;139
15.6.2;9.6.2 Format of Results from an Independent Groups t-Test;140
15.6.3;9.6.3 The p-Value: Its Definition and Meaning;141
15.6.4;9.6.4 The p-Value and Hypothesis Testing;142
15.6.5;9.6.5 Two More Examples of Results from an Independent Groups t-Test;142
15.7;9.7 The Dependent Measures t-Test;143
15.8;9.8 Analysis of Variance;145
15.9;9.9 One-Factor Independent Groups ANOVA;145
15.9.1;9.9.1 The Test Statistic in ANOVA;146
15.9.2;9.9.2 Calculation of the F-Test;146
15.9.3;9.9.3 A Further Analytical Step: Multiple Comparisons;148
15.10;9.10 General Comments on Multiple-Comparison Testing;150
15.10.1;9.10.1 Type I Errors and Type II Errors;150
15.11;9.11 Possible Clinical Interpretations of Statistical Results;152
16;10 Clinical Significance;154
16.1;10.1 Introduction;154
16.2;10.2 The Logic of Confidence Intervals;154
16.3;10.3 Confidence Intervals for a Sample Mean;155
16.3.1;10.3.1 A More Precise Definition of a Confidence Interval;156
16.4;10.4 Confidence Intervals for the Difference Between Treatment Group Means;156
16.5;10.5 Relationship of the 95 CI and 99 CI to the 0.05 and 0.01 p-Values;157
16.6;10.6 The Additional Benefit of Using Confidence Intervals;158
16.6.1;10.6.1 Clinical Relevance and Clinically Relevant Differences;158
17;11 Sample Size Estimation;161
17.1;11.1 Introduction;161
17.2;11.2 Ethical Issues in Sample Size Estimation;162
17.3;11.3 Variables Involved in Sample Size Estimation;163
17.4;11.4 Type I and Type II Errors;164
17.4.1;11.4.1 The Implications of Type I and Type II Errors;164
17.5;11.5 Choosing the Variables Needed for Sample Size Estimation;165
17.5.1;11.5.1 Alpha and Beta;165
17.5.2;11.5.2 The Treatment Effect, Its Variance, and the Standardized Treatment Effect;166
17.6;11.6 Using the Appropriate Formula to Yield the Sample Size;166
17.7;11.7 Influences on the Sponsors Choice of These Values;167
17.8;11.8 Choosing the Objective(s) on Which to Base the Sample Size Estimation;168
17.9;11.9 Other Issues to Keep in Mind;168
18;12 General Safety Assessments;170
18.1;12.1 Introduction;170
18.2;12.2 Operationalizing the Term Drug Safety;170
18.2.1;12.2.1 Perspectives of Regulators and Prescribing Physicians on Safety Data;171
18.3;12.3 General Safety Assessments;172
18.3.1;12.3.1 Extent of Exposure;173
18.3.2;12.3.2 Adverse Events;173
18.3.3;12.3.3 Common Laboratory Tests;174
18.3.4;12.3.4 Vital Signs;176
18.4;12.4 Acquisition and Management of Safety Data;176
18.4.1;12.4.1 Adverse Events;176
18.4.2;12.4.2 Serious Adverse Event Data;177
18.5;12.5 Analysis Populations;178
18.6;12.6 Presentation of Safety Data;178
18.6.1;12.6.1 Descriptive Approaches to Safety Data;179
18.6.2;12.6.2 Time-to-Event Analysis;180
18.6.3;12.6.3 Differences Between Approaches to Safety and Efficacy Data;181
18.6.4;Further Readings;181
19;13 Efficacy Assessment;182
19.1;13.1 Introduction;182
19.1.1;13.1.1 Superiority, Equivalence, and Noninferiority Trials;182
19.1.2;13.1.2 Group Sequential and Adaptive Study Designs;183
19.2;13.2 Analysis Populations;183
19.2.1;13.2.1 The Intent-to-Treat Population;184
19.2.2;13.2.2 The Per-protocol Population;184
19.2.3;13.2.3 Using Both Analysis Populations;184
19.2.4;13.2.4 Missing Data;185
19.3;13.3 Hypothesis Testing Is Integral to All of the Designs Discussed;185
19.4;13.4 Superiority Trials;186
19.4.1;13.4.1 Well-Defined Study Objectives and Endpoints;186
19.4.2;13.4.2 Analysis of Covariance;187
19.4.3;13.4.3 Subgroup Analysis;188
19.5;13.5 Equivalence Trials;189
19.5.1;13.5.1 Why the Hypothesis Testing Strategy Is Different Here;190
19.5.2;13.5.2 Establishing the Equivalence Margin;191
19.5.3;13.5.3 Hypothesis Construction and Testing;192
19.5.4;13.5.4 Statistical Analysis and Clinical Judgment Working Together;193
19.6;13.6 Noninferiority Trials;193
19.6.1;13.6.1 Establishing the Noninferiority Margin;193
19.6.2;13.6.2 Hypothesis Construction and Testing;193
19.6.3;13.6.3 Statistical Analysis and Clinical Judgment Working Together;194
19.7;13.7 Group Sequential Designs;194
19.7.1;13.7.1 Interim Analyses in Group Sequential Trials;195
19.7.2;13.7.2 Data Monitoring Committees;195
19.7.3;13.7.3 Statistical Methodology for Interim Analysis;196
19.7.3.1;13.7.3.1 The O--Brien--Fleming Approach;198
19.7.3.2;13.7.3.2 Group Sequential Alpha Spending Functions;198
19.7.4;13.7.4 Ethical Considerations in Early Termination;199
19.8;13.8 Adaptive Designs;200
19.8.1;13.8.1 Protocol Amendments;200
19.8.2;13.8.2 Increasing Awareness of Adaptive Designs;201
19.8.3;13.8.3 Regulatory Guidance for Adaptive Designs;202
19.9;13.9 Bayesian Approaches to Analyzing Clinical Trials;203
19.10;13.10 Meta-analysis;203
19.10.1;13.10.1 Introduction to Meta-analysis;204
19.10.2;13.10.2 The Basic Steps;205
19.10.3;13.10.3 Choice of the Summary Statistic Representing the Treatment Effect of Interest;206
19.10.4;13.10.4 Data Analysis;206
19.10.5;13.10.5 Evaluating Robustness;208
19.10.6;13.10.6 Dissemination of Results and Conclusions of a Meta-analysis;208
19.11;13.11 Therapeutic Use Trials;209
19.11.1;13.11.1 Large Simple Therapeutic Trials;209
19.11.2;Further Readings;210
20;14 Cardiac and Cardiovascular Safety Assessments;211
20.1;14.1 Introduction;211
20.2;14.2 A Three-Component Risk Exclusion Model;212
20.2.1;14.2.1 Confidence Intervals Facilitate the Determination of Thresholds of Regulatory Concern;213
20.2.1.1;14.2.1.1 Confidence Intervals in Magnitude-of-Change Assessments;213
20.2.1.2;14.2.1.2 Employment of Confidence Intervals in Relative Risk Assessments;214
20.3;14.3 Cardiac Safety Assessment: A Brief History;214
20.4;14.4 Obtaining QTc Data from QT Measurements;215
20.5;14.5 The Thorough QT/QTc Study;216
20.5.1;14.5.1 Design of the TQT Study;216
20.5.2;14.5.2 TQT Study Conduct;217
20.5.3;14.5.3 Statistical Analysis;218
20.5.4;14.5.4 Ramifications of Interpretations by Sponsors and Regulatory Agencies;219
20.6;14.6 FDA Guidance on Excluding Unacceptable Cardiovascular Risk in the Development of Antidiabetic Drugs for Type 2 Diabetes Mellitus;220
20.6.1;14.6.1 Clinical Trials to Be Conducted;220
20.6.2;14.6.2 Choice of Subject Populations;221
20.6.3;14.6.3 Choice of Cardiovascular Endpoints;221
20.6.4;14.6.4 Endpoint Adjudication;221
20.6.5;14.6.5 The Required Meta-analysis;222
20.6.6;14.6.6 A Dedicated Large (Simple) Cardiovascular Trial;223
20.6.7;14.6.7 An Additional Consideration for Safety Meta-analyses;224
20.7;14.7 An Example of a Real Safety Meta-analysis;224
20.8;14.8 Potential Regulatory Thresholds of Interest for Other Cardiovascular Parameters;225
20.9;Further Readings;226
21;15 Manufacturing Small Molecule Drugs and Biologicals;227
21.1;15.1 Introduction;227
21.2;15.2 Nonclinical Development;228
21.3;15.3 Drug Products for Clinical Trials;228
21.3.1;15.3.1 Need for the Investigative Drug and the Control Drug;229
21.3.2;15.3.2 Blinding of Drug Products for Clinical Trials;229
21.3.3;15.3.3 Packaging and Distributing Clinical Drug Products;230
21.4;15.4 Commercial Manufacturing;231
21.5;15.5 Quality Control: Building Quality into the Process;231
21.6;15.6 Stability Studies;232
21.7;15.7 Immediate Release and Modified Release Tablets and Capsules;232
21.8;15.8 Recombinant Protein Biologicals;233
21.8.1;15.8.1 Commercial-Scale Manufacturing;234
21.8.2;Further Readings;235
22;16 Postmarketing Surveillance;236
22.1;16.1 Introduction;236
22.2;16.2 Limitations of Preapproval Clinical Trials;237
22.3;16.3 Individual Differences in Drug Response;238
22.3.1;16.3.1 Hepatic Impairment;238
22.3.2;16.3.2 Renal Insufficiency;239
22.3.3;16.3.3 The Elderly;239
22.3.4;16.3.4 Pediatric Populations;240
22.4;16.4 Postmarketing Surveillance;241
22.5;16.5 The 2005 CDER Report to the Nation;242
22.6;16.6 The Institute of Medicines 2006 Report on Drug Safety;243
22.7;16.7 The Food and Drug Administration Amendments Act of 2007;244
22.8;16.8 The FDAs 2008 Sentinel Initiative;245
22.8.1;16.8.1 The Science of Safety;245
22.8.2;16.8.2 Active Surveillance;246
22.8.3;Further Readings;246
23;17 Main Themes and Concluding Comments;247
23.1;17.1 Introduction;247
23.2;17.2 Ethical Considerations;248
23.3;17.3 Design, Methodology, Operations, and Analysis;249
23.3.1;17.3.1 Reducing Bias and Improving Precision;249
23.3.2;17.3.2 Our Definition of Statistics Revisited;250
23.3.3;17.3.3 Numerical Representations of Biological Information;250
23.3.4;17.3.4 Some Thoughts on the p-Value;251
23.4;17.4 Confidence Intervals and Clinical Significance;252
23.5;17.5 Pharmacokinetics and Pharmacodynamics;252
23.6;17.6 Decision-Making;253
23.6.1;17.6.1 The Subjective Nature of Many Decisions;253
23.6.2;17.6.2 Determining Thresholds of Regulatory Concern;255
23.7;17.7 BenefitRisk Considerations;255
23.8;17.8 Biological Considerations Pervade Our Discussions;255
23.8.1;17.8.1 Biological Underpinnings of Precision Medicine;256
23.8.2;17.8.2 Pharmacogenetics;256
23.8.3;17.8.3 Pharmacogenomics;257
23.8.4;17.8.4 Pharmacoproteomics;257
23.9;17.9 Integrated Pharmaceutical Medicine;258
23.10;17.10 Concluding Comments;259
24;References;260
25;Index;264




