Stem cells from bone marrow have been used in medical treatment for some decades. More recently it became clear that there are advantages to using cord blood cell transplants for some patients with a range of malignant and haematological conditions, and there are other 'candidate' diseases that might be treatable in this way (3). Added to this, the possible value of cord blood stem cells in the nascent field of regenerative medicine is the subject of a wide range of research albeit without clear conclusions or consensus to date (4).
A high-level group has recently been established to advise the Department of Health in England and Ministers of the devolved administrations about strategic directions for the donation of stem cells. The group will make recommendations about how public cord blood banking services for use by patients in the National Health Service (NHS) should evolve (5). Although the strategic group will focus on important issues of the supply and demand for stem cells, it will not directly address the issues associated with parents' interests in cord blood banking.
Currently, there are a handful of commercial cord banks actively targeting their services and advertising at expectant parents in the UK. In addition, some parents make use of commercial services in other countries. A small number of hospitals have arrangements in place to collect cord blood from donors for public cord blood banking with the National Blood Service and the Anthony Nolan Trust, but there are inevitably constraints on this service. Meanwhile, the dilemma of how to respond to women's requests for cord blood collection and storage falls to health care professionals in maternity services, guided by Trust policies if these are in place. In the absence of a broader national public policy about cord blood banking, we have a diverse patchwork of policies on cord blood collection in NHS maternity hospitals.
As part of a research project about multiple perspectives on cord blood banking, I interviewed both parents who had decided to use private cord blood banks and those who had taken up the invitation to donate cord blood to a public cord blood bank (6,7). I found that these parents, whilst having diverse perspectives and positions, have in common an interest in the future possibilities of transplant medicine and stem cell science. Whether storing umbilical cord blood privately or donating it for future use in public facilities, many see themselves as pioneers of potential new therapies.
To date, policy and regulation have focussed on the standards for collecting and storing tissues, along with ethical issues surrounding patient consent. Patient safety, clinical risk, and medico legal implications are also being addressed by the implementation of recent regulations and policies (8). Important as these issues are, there is another challenge, that of governing technologies that embody promising - but uncertain - directions for future treatments. I found that maternity services act as a key interface between the expectations around stem cells and the ethical, practical and legal frameworks that constrain their use. Official statements on the ethics of private banking often pivot on views about the utility of these stem cells in the future. Yet views on the likelihood of need for stem cell transplants are shifting, as are assessments of future applications in regenerative therapies (9). For policy makers, as well as parents, there is a problem of what to do with this uncertainty.
It might be said that parents choosing private cord blood banking are enacting consumer behaviours that are at the heart of key policies framing government health care agendas, and are exhibiting qualities of scientific citizenship that are sought after by policy makers. Nevertheless, cord blood banking is an example of a group of technologies that will require a great deal of attention in forthcoming years because of the 'promissory' dynamic that characterises their development (10). Technologies for which there are great hopes but no proven benefits pose significant challenges for the NHS and for European health systems more generally. Along with new 'personalised medicines' informed by developments in genetics, stem cell science and regenerative medicines they are at the heart of the European Commission's substantial investment in biotechnologies. Consultation and communication about these technologies should be higher on the agenda of policy makers and health care providers.
