Off-label prescribing : justifying unapproved medicine

214 Pages·2015·2.833 MB·English

by  Cavalla, David

Off-label prescribing – justifying
unapproved medicine

Off-label
prescribing –
justifying
unapproved
medicine
David Cavalla
This edition first published 2015 © 2015 by John Wiley & Sons, Ltd.
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Library of Congress Cataloging-in-Publication Data
Cavalla, David, author.
Off-label prescribing : justifying unapproved medicine / David Cavalla.
p. ; cm.
Includes bibliographical references and index.
ISBN 978-1-118-91207-2 (cloth)
I. Title.
[DNLM: 1. Off-Label Use. 2. Drug Approval. 3. Pharmaceutical Preparations. QV 748]
RM300
615.1–dc23
2014028488
A catalogue record for this book is available from the British Library.
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be available in electronic books.
Cover image: © Dan Jubb
Cover design by Dan Jubb
Set in 9/11pt Meridien by SPi Publisher Services, Pondicherry, India
1 2015
This book is for patients, who for too long have been misled about the fact that
many of the prescriptions that are written for them are for unapproved for their
circumstance. We are all patients, or potential patients, so really this book is for
everyone.

Contents
Foreword, ix
Acknowledgement, xi
Author’s note on the cover design, xiii
Introduction, xv
1 What is off-label medication, and how prevalent is it?, 1
What is ‘off-label’ medicine?, 2
Scope of the issue, 8
2 Where it all went right: new uses for existing drugs supported by good
evidence, 19
Examples where products have been through regulatory approval
for a secondary use, 19
Finasteride: pseudohermaphroditism and hair growth, 19
Sildenafil: re-tasking the blue pill for a life-threatening illness, 21
Doxycycline: from killing bugs to protecting gums, 22
Raloxifene: from cancer to bone disease and back again, 23
Galantamine: using snowdrops to improve memory, 24
Cyclosporine: preventing immune attack on organs and skin, 25
Dimethyl fumarate: a remarkable drug for multiple sclerosis, 26
Botox: a drug to kill or cure you, 27
Examples where evidence is uncertain and not to regulatory standards, 28
Tricyclic antidepressants: for curing more than emotional pain, 28
Aspirin for cancer, 30
Retrospective data: looking back to create future therapies, 30
3 Shared decision making and consent, 33
Viewpoint of the patient, 34
Viewpoint of the prescriber, 37
Professional guidelines, 38
Patient awareness, 41
Practitioner attitudes, 41
Diagnosis, 44
4 Gaming the system: the role of the pharmaceutical industry, 47
Normal drug development and drug repurposing development, 48
Gaming the system, 53
Orphan use, 56
Pharmaceutical marketing, 61
Expanding uses for non-pharmaceuticals, 64
DTC advertising, 64
Patents and genericisation, 65
Conclusion, 68
5 Do no harm: Safety and efficacy, 71
Relative safety, 73
vii
viii Contents
Different therapeutic uses, 73
Chronic versus acute dosing, 78
Different dose, 81
Differences between children and adults, 82
Other patient populations, 86
Fatal ADRs, 87
Quality of evidence, 88
Strong evidence, 89
Poor evidence, 91
Doctors do not know evidence, 94
Proximity of off-label to on-label, 96
Debunking medical myths, 101
6 Liability, injustice and reimbursement: who should pay?, 105
A prescriber’s ethical and professional duties, 105
Medical professional participation in off-label promotion, 105
A prescriber’s legal position, 106
Consent, 106
Liability, 111
Reimbursement, 113
Compendia, 115
NICE, 117
Compassionate access, 120
Cost, as a driver for off-label medicine, 121
7 The role of regulation in off-label medicine, 125
Regulators do not regulate medical practice, 126
Off-label marketing, 128
Off-label fines, 130
Whistle-blowers, 134
European situation, 134
Tip of the iceberg, 136
Free speech, 138
8 Justifying unapproved medicine, 143
Constraints on making changes, 144
Moves to enhance off-label medicine, 145
Diagnosis shifting, 146
A partial solution: clinical trial transparency, 147
A solution based on increased regulatory supervision, 152
My solutions, 153
Professional standards, 153
Reimbursement and pricing, 156
Outcomes, 159
Conclusion, 173
References, 175
Index, 191