martes, 13 de mayo de 2014

Seguro de vida: la estratificación genómica y la clasificación de riesgos


Interesante artículo publicado en :


ww.nature.com/ejhg/journal/v22/n5/full/ejhg2013228a.html

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Are genomic results obtained in a research context relevant for life insurance underwriting?
Genomic results obtained in the research context may not meet scientific and medical requirements (eg analytical validity, clinical validity, and clinical utility/actionability) for use in the clinic.27 For this reason, these results and associated information are generally not communicated to research participants. An exception to this general rule is in the field of translational genomic research, which uses the results of preclinical studies to validate new research tools and methods for diagnostic, prevention, and treatment,28 and the occasional cases of actionable research results or material incidental findings from GWAS and whole-genome/exome studies.29
Given the particular nature of genomic research results, which are generally meant to create generalizable knowledge and the difficulties of interpretation, their use by insurers has raised significant concerns. For example, there is no clear consensus on the scientific criteria and actuarial evidence required for research results to be used for underwriting. Moreover, participants might not even be aware that, in some cases, they may need to declare research results to insurers. Informed of this possibility, individuals could decide (as demonstrated in several studies13143031) whether or not to participate in genomic research projects to avoid any negative impact on their insurability. If this phenomenon were to materialize on a large scale, it would also have the effect of stifling scientific research and innovation. Consequently, in many jurisdictions, insurers have been legally precluded or have voluntarily refrained from accessing genetic results including genomic research results.7 Given this trend, a broad international consensus among life insurers not to request genomic research results would be a meaningful affirmation. It would effectively promote public trust in the practices of the life insurance industry, foster research participation, and ultimately contribute to the generation and circulation of more medical and actuarial data (statistical information used to calculate insurance risk and premium amount).
Action item 2.1

Where countries have not already adopted laws or moratoria restricting the use of genetic information for life insurance underwriting, life insurers and their member companies should adopt an explicit policy not to ask insurance applicants for genomic research results.
Action item 2.2

Concomitantly, associations of life insurers and reinsurers should consider drafting an international consensus statement recommending to their members not to ask insurance applicants for genomic research results.
Should predictive risk assessment and risk stratification models based on genomic data be used for life insurance underwriting?
Medical risk prediction models estimate the likelihood of future health-related events. These models use information from multiple sources including lifestyle questionnaires as well as the results of a physical examination and blood tests to predict the risk of conditions such as cancer, heart disease, and diabetes.3233Risk stratification models go further, using these estimates to allocate individuals to deciles or quintiles of the risk distribution or into categorical groups of low-, intermediate-, or high-risks groups. In this way, individuals can then be placed in a segment or risk class alongside others at similar risk. The smaller the stratum, the more alike members of the group will be. Using these models, different interventions can be targeted to different risk strata to potentially improve outcomes.
In life insurance underwriting, individuals having similar risk profiles, for example, for mortality, are grouped together into homogeneous risk classes for the purposes of determining insurance premiums and estimating death benefit costs.34Similar to risk stratification in the medical context, but focusing on mortality, the process of risk classification consists of placing insurance applicants into groups representing roughly equivalent levels of risk. The American Academy of Actuaries maintains that risk classification ‘should accurately reflect the cost of a given risk characteristic; be applied objectively and consistently; and be cost-effective and responsive to change (and scientific developments)’.35 If permitted, actuarial risk stratification models integrating genetic data from population biobank projects with other medical data (eg from clinical trials and cohort studies) would have the potential to refine and determine sub-populations for more accurate risk assessment.36 Genomic risk stratification, like other contextual medical, environmental, and lifestyle information, could thereby avoid genetic exceptionalism. Ultimately, it could be argued that the absence of genomic risk stratification in insurance underwriting might eventually constitute discrimination due to actuarial/clinical inaccuracy.
Nonetheless, to authorize this approach would require substantial change to be made to the laws and practices of a number of countries, which have already adopted laws or voluntary agreements hoping to neutralize public anxiety about genetic discrimination without excessively disadvantaging insurers. Any change would generate additional costs, and might well foster greater public distrust of insurers even though such classification could eventually become more accurate from an actuarial standpoint.
Currently, insurers routinely place about 90% of applicants in the standard risk pool.8 Few applicants would move into or out of standard risk pools because genomic information about currently known common variants seldom substantially affects mortality risk estimation already based on phenotype and family history.37Furthermore, the accuracy of risk prediction models depends on the target population. Whatever the objective impact of the use of risk prediction models including genetic information for life insurance, enquiries by insurers may well be seen by the public as unwelcome and intrusive. Unless the benefits of insurers’ access to genomic information are large and understood, the damage to the public profile of insurers from insisting on access to such information for underwriting may outweigh its current commercial value.
Action item 3.1

Given the current scientific uncertainties and public apprehension, there is at present insufficient benefit to warrant the addition of predictive genomic data to actuarial risk stratification models. However, research by insurance companies on ways to include genomic data to their models and the implication for customer’s insurability should be encouraged.
Action item 3.2

To foster public trust in genomics and promote the eventual use of risk prediction and stratification models, insurers should at minimum offer life insurance policy covering a minimal (ceiling) amount at an affordable rate and with no health questions (including about genomics) asked.
What other actions could insurance companies and other stakeholders in the debate take to alleviate concerns over the use of genomic information in life insurance contracts?
Use of genetic information by insurers seems to be one of the recurring factors that motivate people not to participate in genetic research or not to undertake clinically relevant genetic testing.1314 For example, in a recent survey prepared for the Office of the Privacy Commissioner of Canada, 52% of surveyed Canadians expressed strong concern that, if their doctor recommended that they undergo genetic testing, they might be asked to provide the results for non-health-related purposes. Seventy-one percent of those who expressed significant concern said their concerns would likely affect their willingness to undergo genetic testing.38This is highly problematic as important decisions regarding one’s health care or financial planning should not be taken based on inaccuracies, hype, or anecdotes. Therefore, insurability concerns should be addressed to avoid potentially detrimental effects on research as well as to ensure the integration of genomics into clinical care. Previous attempts by insurers to provide information about the nature and functioning of the life insurance contract have had limited success in reassuring the population.394041 More creative solutions are needed. It could be that the information provided so far has failed to reach most participants in the genomic and insurance debate such as the popular media, ethics committees, clinicians, researchers, and genetic counsellors. The content of the message sent to these stakeholders might also need to be revised and validated by parties representing different complementary expertises in the debate. There is a need for tailored, accessible, and objective information for communication to these stakeholders.
Additional strategies proposed to allay popular anxiety include documenting the industry’s experience with genetic information and making this documentation available for independent audits as is currently done in the United Kingdom,7 or appointing an independent authority (ie ombudsman) that will be responsible of informing and protecting the population in case of adverse decisions based on genetic data.
Action item 4.1

Groups with complementary expertise (eg insurers, actuaries, genetic counsellors, clinicians, and genomics researchers) should develop clear, up-to-date, reliable information material and frequently asked questions about genomics and underwriting to be communicated by all stakeholders involved (eg public, popular media, ethics committees, clinicians, researchers, and genetic counsellors).
Action item 4.2

Beyond the provision of information, regional/national life insurance professional organizations could develop openly accessible reference documents regarding the practices of their members on the use of genetic test information. They could also perform regular audits of these practices and have an independent third party also do so.
Action item 4.3

National governments could name an independent third party (ombudsman), with expertise in both genomics and personal insurance underwriting to be responsible for addressing complaints of adverse underwriting decisions involving genomic information.
Conclusion
Genomic research has led to the rapid development of new tools that provide an increasing amount of complex ‘at-risk’ health information. These recent developments in genomics and concomitant progress in information technologies are presenting a different set of challenges and opportunities for all stakeholders including the life insurance industry. Having reviewed the current ethical, social, and legal issues on the use of genomic information in the context of life insurance, the Expert Group identified four questions and provided action items as a response.
We believe the proposed actions to be sufficiently broad and inclusive to be relevant to life insurance and genomics in a variety of national and regional contexts. They map out interesting options to meet the challenges set forth by the use of genomic information in the context of life insurance. Nevertheless, the evolving pace of the use of genomic data should continue to be carefully monitored by all stakeholders.
The authors are members of the International Expert Group on Genomics, Life Insurance, and Breast Cancer co-chaired by Hilary Burton and Yann Joly.
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Acknowledgements
We thank Marie-Cécile Symons and Nadine Thorsen for their valuable assistance in organizing the ‘Life Insurance: Breast Cancer Research and Genetic Risk Prediction Seminar’ held on 24 and 25 September 2012 in Quebec City. This research was financially supported by the Canadian Institutes of Health Research (CIHR) for the ‘CIHR Team in Familial Risk of Breast Cancer’ Program (Grant No. 87521) and by the Ministry of Economic Development, Innovation, and Export Trade (Grant No. PSR-S11R