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Minutes of the meeting held on 25 November 2002

Tue, 16 August 2005

2nd meeting

NUFFIELD COUNCIL ON BIOETHICS
WORKING PARTY ON PHARMACOGENETICS: ETHICAL ISSUES

Minutes of the Meeting held at the Nuffield Foundation, 28 Bedford Square, London WC1B 3JS on Monday 25 November 2002

PRESENT
Professor Peter Lipton (Chairman)
Professor Haleh Afshar
Professor Martin Bobrow
Professor John Caldwell
Professor Klaus Lindpaintner
Professor Sir Michael Rawlins
Professor Nikolas Rose
Dr Nigel Starey
Professor Albert Weale

SECRETARIAT
Dr Sandy Thomas
Tor Lezemore
Harald Schmidt
Natalie Bartle
Nicola Perrin

CHAIRMAN'S INTRODUCTION

1 The Chairman welcomed the group and outlined the schedule for the day, including the first fact-finding meeting.

MINUTES OF MEETING HELD ON 3-4 SEPTEMBER 2002 (RECIRCULATED)

2 One amendment was made to the minutes, regarding a number of legal cases in which patients had successfully sued pharmaceutical companies as a result of experiencing adverse reactions to medicines. The minutes were then approved.

FACT-FINDING MEETING

3 A fact-finding meeting was held with Professor David Goldstein, Wolfson Professor of Genetics, University College London; Dr Rashmi Shah, Medicines Control Agency; and Mr Adrian Towse, Office of Health Economics. A record of the meeting is recorded separately. In advance of the meeting, the Working Party identified the issues to be discussed with the guests. One such issue concerned how regulators assess the balance between risks and benefits regarding particular medicines and whether it was right that such decisions should be made in private.

4 It was suggested that the ethical issues raised by pharmacogenetics could be seen as falling under two headings: stratification and handling of genetic information. In addition, there was a broader question about inequities in access to medicines. With regard to stratification, the implications of pharmacogenetics for different racial groups were important and needed to be discussed further. Another aspect of stratification was the economic framework in which the development of new medicines took place. The Working Party would have to confront questions about the duties and obligations of various groups with respect to promoting the development of medicines. It was observed that contrasting opinions had been expressed regarding the likely economic impact of pharmacogenetics on the pharmaceutical industry. The Working Party would need to solicit further views on this matter in order to reach a realistic conclusion.

5 There was some discussion of the way in which cost-benefit calculations were integrated into the process of developing new medicines. It was important to note that the more restrictions and regulatory hurdles were put in place, the higher would be the costs of conducting clinical trials and therefore of medicines. There was a serious danger that no medicines would be developed for diseases affecting small numbers of people if regulation was applied too stringently.

6 It was noted that the term orphan medicine had previously been used to refer to therapies for diseases that affected small numbers of people. In the light of pharmacogenetics however, it could also be used to refer to therapies that were effective only in a small proportion of people who had a disease that affected many people.

7 A further issue that should be explored was the possibility that pharmacogenetics would increase existing inequalities in healthcare both nationally and internationally. It could be argued that the development of a culture in which medicines were prescribed in conjunction with genetic tests would have serious implications for the treatment of those in developing countries as well as for poorer groups within developed countries.

8 Finally, the Working Party discussed issues concerning the divulging of genetic information to individuals and their families. There was evidence that comparatively few people with a family history of Huntington¡¦s disease opted to be tested presymptomatically. However, when treatment was available, people were more inclined to make use of genetic tests. It was possible that people would agree to pharmacogenetic tests to improve their medical treatment, but would not be able to avoid such tests also revealing information about susceptibility to other illnesses, which they may not have wished to know. Whether this would be a problem depended to some extent on the nature of the pharmacogenetic tests. It would be possible to restrict a test so that only the presence or absence of a single SNP, or a group of SNPs that affected response to a particular medicine, were identified. This would reduce the likelihood that other information would be revealed. However, the problem could still arise. One example of a gene that had more than one effect was the ApoE4 variant, which was involved in Alzheimer¡¦s disease and heart disease.

ADDITIONAL FACT-FINDING MEETINGS

9 It was agreed that representatives from the private health insurance industry, patient groups and informatics would be invited to attend a fact-finding meeting on 20 February. Relevant patient groups included those concerned with breast cancer, Alzheimer¡¦s disease and schizophrenia.

PEER REVIEW

10 Six peer reviewers would be selected and approved by the Council in January. The Working Party was invited to propose individuals to the Secretariat. The Secretariat would pursue the options for obtaining advice from legal representatives about issues including liability for adverse reactions, and access to personal data.

CONSULTATION WITH THE PUBLIC

11 The Working Party noted the final consultation document, which had been circulated to approximately 650 individuals and organisations. 160 copies had also been downloaded from the website in the five days since it had been launched. Responses would be circulated to members as they were received and a summary of the views presented at the next meeting.

DISCUSSION OF THE DRAFT PAPER

12 There was some discussion of the terminology used in the paper. It was important to be clear about the difference between pharmacogenetic tests that examined genetic variation in tumours, such as Herceptin, from those that examined genetic variation in inherited DNA. Both types of test could provide information about a patient¡¦s entire genotype, but the Herceptin-type tests were, in practice, restricted to obtaining information about the tumour. It was possible to identify two types of pharmacogenetic test. In the first, genetic variation was only of interest insofar as it emerged in the response to a medicine. In the second, genetic variation related to the disease was integral to the response to a medicine.

13 The Working Party considered the extent to which the paper ought to provide scientific information about genetics and pharmacogenetics. The aim of the document should be to provide enough information for an individual without scientific training to understand the basic issues. Various specific points of drafting were discussed. The question of the resurrection of medicines that had previously been withdrawn was considered.

14 Genetic exceptionalism was an important issue that needed to be brought out. It could be suggested that a choice between having a genetic test and subsequently being prescribed a life-saving medicine or refusing the test and as a result not being prescribed the medicine was no choice at all. In the context of research, it seemed that broad consent would be valuable, but that it might be difficult to create conditions under which people would want to give such consent. It was observed that all consent is in practice limited to some degree. For example, people who donate DNA samples to UK BioBank might consent to their sample being used in research related to healthcare, but not to it being made available to police.

Discussion of themes from fact-finding meeting

15 Central themes that emerged from the fact-finding meeting earlier in the day were highlighted.

  • Different groups of medicines. Different issues were raised by different groups of medicine.
  • Ethnic differences. Racial and ethnic differences would have implications for clinical trials and for regulation in international markets.
  • Safety. Safety issues arose regarding the management of pharmacogenetic information in primary care and with regard to off-label prescribing.
  • Realistic assessment of future developments. It was hard to predict how pharmacogenetics would be developed and applied.
  • Consent. There were clearly issues raised regarding consent to pharmacogenetic tests in research and in treatment. Many of those raised in relation to research had already been considered in other fora.
  • The capacity to deliver. There were likely to be practical difficulties in the delivery of pharmacogenetic tests within the NHS and more broadly.
  • The overlap between genetic variation in susceptibility to disease and in response to medicines.

Next steps

16 The paper would be revised by the Secretariat and circulated to the Working Party. A revised draft would then be prepared for the Council meeting at the end of January 2003. The paper would be sent for peer review following the Working Party meeting in February 2003.

ANY OTHER BUSINESS

17 There was none.

Last Updated Tue, 16 August 2005