Economic issues involved in integrating genomic testing into clinical care: the case of genomic testing to guide decision-making about chemotherapy for breast cancer patients

[An economic perspective on targeted treatments]

In the current context of crisis in the field of drug research and patients' increasing demand for greater involvement in the decision-making about their treatment, the possibility of a more personal tailored approach to medicine is emerging. This raises questions about the clinical benefits of targeted therapeutic approaches versus the cost of determining which patients are likely to benefit the most, and protecting the others from the toxicity of inappropriate treatments. Although cost-effectiveness studies shed light on this issue, the conclusions to which they point tend to be obscured by interdependence between the pricing of these tests and the cost of the treatments involved. Investigating the societal willingness-to-pay for gains in QALY (quality adjusted life year) should help to disentangle this interdependence and clarify the conclusions of cost-effectiveness studies.

Multigene assays and molecular markers in breast cancer: systematic review of health economic analyses

Breast cancer is the most common female cancer and is associated with a significant clinical and economic burden. Multigene assays and molecular markers represent an opportunity to direct chemotherapy only to patients likely to have significant benefit. This systematic review examines published health economic analyses to assess the support for adjuvant therapy decision making. Literature searches of PubMed, the Cochrane Library, and congress databases were carried out to identify economic evaluations of multigene assays and molecular markers published between 2002 and 2012. After screening and data extraction, study quality was assessed using the Quality of Health Economic Studies instrument. The review identified 29 publications that reported evaluations of two assays: Oncotype DX^® and MammaPrint. Studies of both tests provided evidence that their routine use was cost saving or cost-effective versus conventional approaches. Benefits were driven by optimal allocation of adjuvant chemotherapy and reduction in chemotherapy utilization. Findings were sensitive to variation in the frequency of chemotherapy prescription, chemotherapy costs, and patients’ risk profiles. Evidence suggests that multigene assays are likely cost saving or cost-effective relative to current approaches to adjuvant therapy. They should benefit decision making in early-stage breast cancer in a variety of settings worldwide.

[Health care expenditures linked to the use of targeted therapies and diagnostic tests for cancer patients]

Recent advances in cancer research have led to the development of very expensive new drugs for cancer treatment: the targeted therapies. However, the introduction of these new therapeutic agents which costs are increasing could threaten the diffusion of these innovations. It is thus necessary to determine whether the use of targeted therapies yields clinical benefits that justify their increasing cost. The development of companion diagnosis tests to target drugs and thus to select those patients most likely to benefit from the treatment may provide a useful means of containing the progress of health care expenditures and improve the cost/benefit ratio. In this paper, we present current estimates of health care expenditures linked to the use of targeted therapies for cancer care. We also discuss some of the issues related to the regulatory decisions (pricing and reimbursement) concerning the test/drug couple.