The fourth series of BBC Radio 4’s bioethics programme Inside the Ethics Committee began on August 6 2008, and discussed some of the ethical issues involved in the creation of ‘saviour siblings’ (first broadcast on BBC Radio 4, at 20.00, August 6 2008 and repeated on August 9 2008, at 22.15). Vivienne Parry and a panel of experts discuss the ethical issues around real-life medical cases, on this occasion the dilemma involves a young child, Catherine, and her medical treatment. Previous BioethicsBytes posts have noted the utility of this series (see the post Making tricky decisions – Inside the ethics committee), and this episode is no different.
Shortly after she was born Catherine was diagnosed with Diamond Blackfan Anaemia (DBA). DBA is a rare blood disorder caused by a genetic mutation. In general, its treatment is “gruelling” (00:02:27) and the prognosis is poor. As in several previous cases (notably, the Whitaker, Fletcher and Mariethoz families), Catherine’s parents were offered the option of using preimplantation genetic diagnosis (PGD) for tissue typing alone in order to create a ‘saviour sibling’ whose umbilical cord blood could be used to treat Catherine’s DBA.
Many of the ethical issues involved in this choice have been dealt with in past BioethicsBytes posts (see The Future of Our Families? and the extended commentary that accompanies that post), however this edition of Inside the Ethics Committee brings consideration of these issues up to date. Though the majority of the ethical issues raised are covered in our existing posts, some of the additional details noted here about DBA and the testing procedure introduce new complications into the ethical debate.