Drugs for pre-osteoporosis: an example of prejudice-based medicine?
Dr Alonso-Coello and colleagues attack industry and some health care
professionals for advocating bone protective therapy for women with
osteopenia. In putting their case they reveal their ignorance of major
that have occurred in the prediction of fracture risk, in particular the
clinical risk factors in improving fracture risk prediction. The majority
women who suffer a fragility fracture do not have osteoporosis as defined
a bone mineral density T-score below -2.5 SD,1 and one reason for this is
that many women have clinical risk factors that increase fracture risk
independently of bone mineral density.2 Hence, a woman with osteopenia (a
term that covers a wide range of bone densities) may have a higher
probability than one with a T score below -2.5 SD.. The recommendation by
the authors that treatment decisions should be based on the assessment of
absolute risk of fracture is hardly a revelation; similar statements by
in the field can be found in numerous publications over the past 5 years
this strategy forms the basis of current European guidelines and of the
forthcoming WHO report and risk algorithm. Investigation of the ability of
drug therapies to reduce fracture incidence in high risk women, regardless
whether they have osteopenia or osteoporosis, has necessitated the
that are so maligned by Alonso-Coello and colleagues.
Other misconceptions and inaccuracies must also be mentioned. Whilst
may have been isolated examples of inappropriate marketing, there is
widespread acceptance among health care professionals for the need to
incorporate cost-effectiveness into decisions about treatment and, as
acknowledged by the authors, treatment of women at high risk of fracture
cost-effective.3 The description of the “rare but catastrophic
the jaw” as a side-effect of oral alendronate therapy is scare-mongering
unbalanced; a causal relationship between oral bisphosphonates in the
used for osteoporosis and osteonecrosis of the jaw has not been firmly
established.4 Finally, potential conflicts of interest exist in many
personal prejudices, as well as financial incentives can be a barrier to
For those of us fortunate enough to have been involved in
research and patient care over these last two decades, the emergence of
technologies for non-invasive assessment of bone mass and of a range of
effective therapeutic options has heralded a revolution in care for what
previously regarded as an inevitable consequence of aging. Indeed, the
of these advances and their translation to improving human health has
resulted in more rapid progress in management than that seen in
cardiovascular disease and diabetes mellitus. Furthermore, the health
economic basis for appropriate utilisation of these translational
established and provides a rational use of scarce healthcare resources.
time when governmental research agencies such as the MRC and NIHR are
calling for translation of medical research to improve human health, it
anachronistic for our national medical journal to be espousing the view
such research, honestly undertaken, simply represents the end-product of
unholy alliance between corporate giants and unethical investigators. The
tone and content of the analysis by Dr Alonso-Coello and colleagues does a
disservice both to sufferers from the disease and to those in the field
strive to reduce the enormous mortality and morbidity attributable to
1. Siris ES, Chen YT, Abbott TA, Barrett-Connor E, Miller PD, Wehren
LE et al.
Bone mineral density thresholds for pharmacological intervention to
Arch Intern Med. 2004;164:1108-12.
2. Kanis JA, Oden A, Johnell O, Johansson H, De Laet C, Brown J et
of clinical risk factors enhances the performance of BMD in the prediction
hip and osteoporotic fractures in men and women. Osteoporos Int.
3. Kanis JA, Adams J, Borgström F, Cooper C, Jönsson B, Preedy D et
cost-effectiveness of alendronate in the management of osteoporosis. Bone.
4. Khosla S, Burr D, Cauley J, Dempster DW, Ebeling PR, Felsenberg D
et al for
the American Society for Bone and Mineral Research. Bisphosphonate-
associated osteonecrosis of the jaw: report of a task force of the
Society for Bone and Mineral Research. J Bone Miner Res 2007;22:1479-91.
Prof Compston has received
payment for consultancy work
and/or speaking engagements
from Procter & Gamble, Eli Lilly,
GSK/Roche, Amgen, Pfizer,
Servier, Shire, Novartis,
Nycomed and Wyeth and has
been reimbursed for attending
scientific conferences by Procter
& Gamble, Eli Lilly, and Servier.
She receives funding for a grant
from Procter & Gamble and
Servier and has acted as an
expert witness in several cases
osteoporosis and in an
alendronate patent dispute.
Competing interests: No competing interests