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Drugs, genes and screens: The ethics of preventing and treating spinal muscular atrophy
Author(s) -
Gyngell Christopher,
Stark Zornitza,
Savulescu Julian
Publication year - 2020
Publication title -
bioethics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.494
H-Index - 55
eISSN - 1467-8519
pISSN - 0269-9702
DOI - 10.1111/bioe.12695
Subject(s) - spinal muscular atrophy , sma* , beneficence , economic justice , autonomy , medicine , genetic testing , preimplantation genetic diagnosis , disease , smn1 , genome editing , genetic enhancement , intensive care medicine , biology , pregnancy , genetics , pathology , political science , gene , genome , law , mathematics , combinatorics
Spinal muscular atrophy (SMA) is the most common genetic disease that causes infant mortality. Its treatment and prevention represent the paradigmatic example of the ethical dilemmas of 21st‐century medicine. New therapies (nusinersen and AVXS‐101) hold the promise of being able to treat, but not cure, the condition. Alternatively, genomic analysis could identify carriers, and carriers could be offered in vitro fertilization and preimplantation genetic diagnosis. In the future, gene editing could prevent the condition at the embryonic stage. How should these different options be evaluated and compared within a health system? In this paper, we discuss the ethical considerations that bear on the question of how to prioritize the different treatments and preventive options for SMA, at a policy level. We argue that despite the tremendous value of what we call ‘ex‐post’ approaches to treating SMA (such as using pharmacological agents or gene therapy), there is a moral imperative to pursue ‘ex‐ante’ interventions (such as carrier screening in combination with prenatal testing and preimplantation genetic diagnosis, or gene editing) to reduce the incidence of SMA. There are moral reasons relating to autonomy, beneficence and justice to prioritize ex‐ante methods over ex‐post methods.