Guidelines for genetic testing
The American College of Obstetricians and Gynecologists states that patient medical history and family history are paramount in obtaining information regarding risk for breast and ovarian cancer. First- and second-degree relatives are allocated to this category. Information regarding age of diagnosis, maternal and paternal lineage, and ethnic background can imply a need for genetic testing (TABLE 2).7,8 A number of genetics national organizations have participated in recommendations and include the American College of Medical Genetics and Genomics, the National Society for Genetic Counselors, and the Society of Gynecologic Oncology.7
The question always surfaces, could the clinical outcome of the cancer when diagnosed have been changed if screening were undertaken, with earlier diagnosis, or prevented with prophylactic mastectomy, and changed the end result. In addition, it is well known that breast augmentation mammoplasty alters the ability to accurately evaluate mammograms. Patients considering this type of plastic surgery, ideally, should be counselled accordingly.9
Bottom line, we as clinicians must be cognizant of both ACOG and United States Preventive Services Task Force (USPSTF) recommendations regarding screening and gene testing for women considered high risk for breast cancer based on family history.7
Legal considerations
The case presented demonstrates that the discovery of the BRCA1 and BRCA2 genes, and reliable tests for determining the existence of the genes, brought with them legal issues as well as medical advantages. We look at professional liability (malpractice) questions this technology raises, and then consider the outcome of the hypothetical case. (BRCA is used here to apply broadly—not only to BRCA1 and 2 but also to PALB2, CHEK2, and similar genetic abnormalities.)
To date, the most visible BRCA legal issues covered in cases and law reviews have focused more on patent law than malpractice. The most important of these was a decision of the US Supreme Court in Association for Molecular Pathology v Myriad Genetics.10 The US Patent Office was granting patents to companies finding useful, naturally occurring segments of human DNA, and had granted Myriad several patents on BRCA1 and BRCA2 genes. This patent policy had the potential to seriously interfere with broad scientific use of these genes.11 Fortunately, the Supreme Court stepped in and unanimously invalidated such patents. It held that a “naturally occurring DNA segment is a product of nature and not patent eligible merely because it has been isolated.” The Court noted, “Finding the location of the BRCA1 and BRCA2 genes does not render the genes patent eligible ‘new . . . composition[s] of matter.’”8 The Court did allow the patenting of tests for specific gene structures, and artificial changes in naturally occurring genes.
Malpractice and BRCA
While the BRCA patent wars have lingered, the potential for a significant increase in BRCA-related malpractice cases is of increasing concern. Like most malpractice liability, these new claims are based on very old principles of negligence.12 To prevail, the plaintiff (ordinarily, an injured patient) must demonstrate 4 things:
- A duty. That is, the physician owed a duty to the injured party. Usually (but not always) that requires a professional relationship between the physician and the person injured.
- A breach of that duty. Malpractice liability is based on the fact that the physician did something that a reasonably careful physician (generally, of the same specialty) would not have done, or that the physician failed to do something that a reasonable physician would have done. This usually means that the profession itself sees what the physician did (or did not do) as medically inappropriate. In medical malpractice cases, that is ordinarily measured by what the usual or common practice is among prudent physicians. In rare circumstances, courts have found the standard practice of a profession to be negligent. Where, for example, it was custom for a professional not to give an eye pressure test to anyone under age 40, a court found that common standard to be inappropriate.13 In the words of Judge Learned Hand (speaking about a different case), “a whole calling may have unduly lagged in the adoption of new and available devices. It never may set its own tests.”14 Underlying negligence is a cost-benefit analysis (discussed below).
- Damages. There must have been some damage that courts recognize, usually loss of money or opportunity to work, the cost of care, pain and suffering, or loss of enjoyment/quality of life. In malpractice, many states now recognize the “loss of chance” or the “loss of a chance.” That means, if a “physician negligently fails to diagnose a curable disease, and the patient is harmed by the disease, the physician should be liable for causing the ‘loss of a chance of a cure.’”15 (Delay in diagnosis is the most common reason for claims in breast cancer care.)16
- Causation. The breach of duty (negligence) must have caused the damages. The causation must have been reasonably close. If a driver drives through a stop sign, or a physician misreads a test, and someone is injured but there is no connection between the negligence and the injury, there is not tort liability.
The 4 elements of malpractice just described are raised in some way in the possible liability associated with BRCA testing. We next look at the ways in which liability may arise from that testing (or lack of it).
Underlying much of the following discussion is the “cost-benefit” consideration noted above. This concept is that the total cost (financial and health) of testing should be compared with the value of the benefits of testing, taking into account the probabilities that the testing will result in better health outcomes. BRCA testing, for example, is essentially cost-free in terms of physical risk. Its financial cost, while not trivial, is not great, and it is commonly covered by health insurance.17 In terms of benefits, the testing has the potential for providing critical information in making treatment decisions for a meaningful percentage of patients and their families. There are many ways of analyzing the liability risks of genetic malpractice,7,18 and the following is intended to discuss some of the greatest risks related to BRCA testing.
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