Pathway was very busy last week. We had several meetings with FDA, and we participated in the Subcommittee on Oversight and Investigations’ hearing on “Direct-To-Consumer Genetic Testing and the Consequences to the Public Health,” held last Thursday. The media has generally characterized the hearing as a slam on the direct-to-consumer genetic testing industry, picking up on statements made by congressmen of “snake-oil,” or according to the Government Accountability Office’s (GAO) report, test results that “are misleading and of little use to consumers.” While we feel that the Congressional hearing did raise some valid concerns, many of these concerns are unfairly and inaccurately being applied to the three innovative companies that testified: Pathway Genomics, Navigenics and 23andme.

We want the public, FDA and Congress to know that Pathway is not a direct-to-consumer (DTC) genetic testing company. We define DTC as allowing a customer to order and receive test results without the involvement of a licensed physician. New technologies have enabled expert physicians to facilitate this in ways that differ from a traditional physician-patient relationship, and we feel that this is an important trend in facilitating patient access to expert providers, lowering costs, as well as addressing some privacy concerns. Nevertheless, even though Pathway has always had expert physician and genetic counselor review and oversight over the ordering and delivery of our genetic testing services, Pathway voluntarily suspended the ability for customers to purchase a collection kit at our website or any retail outlets.

Furthermore, the GAO report released at the congressional hearing investigated 15 companies and identified some practices of DTC genetic testing companies that should not be tolerated and have no place within the scientific and medical community. As acknowledged during the hearing, none of the companies that testified engage in those practices, and only one of the other twelve was identified. As a result, media coverage following the hearing focused on Pathway Genomics, Navigenics, and 23andme, and it unfairly associated the scientific leaders of this emerging industry with what the GAO referred to as “bottom feeders” who are exploiting people’s misunderstanding of genetic tests.

We would be remiss if we did not recognize that the GAO report highlights some legitimate concerns that are relevant to Pathway. During the hearing, an audio clip was played that implied that one of Pathway’s genetic counselors encouraged a woman to submit her fiancé’s saliva sample in order to surprise him with a genetic report. It is important to know that the caller was talking to a customer service representative, and not a genetic counselor. Regardless, this occurrence was brought to the attention of our management team immediately after it happened, and long before we knew it was part of a GAO investigation. We addressed the issue with the customer service team to make it clear that we do not accept samples to be submitted on behalf of someone else. Furthermore, we require personal consent for every sample.

Moreover, the GAO highlighted different interpretations in risk of outcomes reported by the GAO. We appreciate how one concludes from this that these tests are unreliable, but it is important to recognize that only applies to the health conditions report, not carrier status or drug response and that this report provides an estimate of risk, not a diagnosis of disease or prediction.   Differences in interpretation of test results are not uncommon in medical care. This is why second opinions are often requested by patients, and it is why doctors differ in their opinions on how to guide patient treatment. It is for these reasons that we encourage our customers to use this information as one additional piece of information to be used in making health decisions, as an enhancement to and not a replacement for other risks including environment, lifestyle and family history. Pathway, 23andme and Navigenics all apply different rules for which genetic markers to use and which research paper to reference for odds ratio calculations, but that does not make them incorrect. To help offer transparency into how Pathway calculates results, we are developing a new web page laying out our processes for scientific curation, the criteria that we use in selecting research publications and the methods that we use to calculate risk for the health conditions report. Additionally, we support the common conclusion that regulatory bodies and industry need to agree on standards, and look forward to an ongoing dialogue with FDA and others to define those.

Moving forward, if this past week highlighted one thing for us it is that genetics and genetic information is significantly misunderstood. Some of this is because our knowledge is swayed by science fiction, popular movies and television shows that portray extreme scenarios, often emphasized for their entertainment value over their scientific credibility. Further, the field of genetics is broad, and it covers a variety of testing. The discussions about legitimate issues and concerns need to be focused more specifically to the types of testing and procedures being analyzed. The issues and concerns surrounding genetic risks for complex, adult-onset health conditions are very different from those surrounding carrier status testing, drug response testing, or other forms of testing. Given the complexity of these issues, in-depth objective analyses and discussion often do not occur, intensifying the potential for misconceptions.

As a leader in this emerging industry, Pathway Genomics does not seek to hide behind these realities or use them to brush off legitimate concerns. We believe that genetic testing holds the promise of fundamentally shifting the delivery of health care, allowing for more personalized treatment and proactive prevention of disease. While our understanding of genetics is still growing, it is no reason to postpone taking advantage of the best information we have today. To that end, this post marks the beginning of a multi-series project being initiated by Pathway to educate physicians, patients, policy makers, and anyone else interested in a greater understanding of the emerging field of genetics. This series will aim to be objective and informative, and will focus on a single topic at a time, allowing us to provide the depth and focus that are needed to establish a fair understanding of this industry, its promise and its risks. Our first post, which will be available here next week, will provide an in-depth explanation of why different genetic testing companies can produce different estimates of risk for complex health conditions.

Last Thursday morning, the House of Representatives’ Committee on Energy and Commerce’s Subcommittee on Oversight and Investigations held a hearing on “Direct-To-Consumer Genetic Testing and the Consequences to the Public Health.” We would like to share with you the testimony given by Dr. David Becker, Chief Scientific Officer at Pathway Genomics. Please see below for the full text of his testimony.
Mr. Chairman and Committee members,
Thank you for the opportunity to testify to you today. My name is Dr. David Becker, I am the Chief Scientific Officer at Pathway Genomics, a San Diego based genetic testing company.
Pathway Genomics utilizes advanced genetic testing technology and validated genetic information to give individuals and physicians the best available information about their genetics, allowing them to make informed health decisions. It should be noted that although Pathway provided genetic tests directly to consumers like many of our competitors, we voluntarily suspended that practice as we work with the U.S. Food and Drug Administration (FDA) to ensure that our tests are offered in a manner consistent with regulatory requirements.

Lately, there has been much concern over the issue of whether a person can practically use the information personal genomics companies give to patients and their physicians. This can be distilled with the simple question: are the results of these personal DNA reports actionable? The answer to this question is, simply, yes, the results of accurate personal DNA testing are, indeed, actionable. Further, when used by physicians and patients, personal genetic testing can be a very powerful tool in making positive and personalized health decisions, for a fraction of the cost of traditional genetic testing.

For example, genotyping of variants in CYP2C9 and VKORC1 can be used to predict an individual’s best initial dose of warfarin, an anticoagulant that is widely used in the treatment of thrombosis and related conditions. The Medco-Mayo Warfarin Effectiveness Study, published in the April 2010 edition of the Journal of the American College of Cardiology, has shown that the use of genotyping information can reduce the risk of hospitalization due to the inappropriate dosage of warfarin.[1]

Another example is a personal genetic report that provides information of a person’s genetic propensity for complex diseases, which are caused by a combination of genetic, environmental and lifestyle factors. People who have a high genetic predisposition for a particular disease may, or may not, get the disease.

Researchers at the National Human Genome Research Institute have suggested that genetic information may be more motivational in encouraging healthful behavior, compared to other risk assessments.[2]

Further, an accurate genetic carrier status report provides information on whether a person carries mutations associated with recessive genetic conditions. These diseases can be carried silently in a family for generations with no one being affected. If an individual’s report results show that a person carries a mutation, and he or she is interested in having children, the next course of action could be to have his or her partner tested and discuss the results with a physician. If a person is found to carry a mutation for a disease, and his or her partner has the same mutation, their child has a 1 in 4 chance of having that disease. A genetic counselor or trained physician can explain these risks and their options with an individual who is planning a family.

Providing a view into how one’s genetics may affect long-term health risks, genetic testing offers people the promise of improved health as well as lowering the overall costs of care. Doctors can help patients establish personalized prevention plans that can keep people from getting sick in the first place or be on alert to detect disease and initiate treatment as early as possible. Further, doctors can personalize their patient’s medication regimens, such as establishing the optimal doses or avoiding prescriptions that may be ineffective or dangerous.


[1] Epstein RS, Moyer TP, Aubert RE, O’Kane DJ, Xia F, Verbrugge RR, Gage BF, Teagarden JR. “Warfarin Genotyping Reduces Hospitalization Rates Results From the MM-WES (Medco-Mayo Warfarin Effectiveness Study).” Journal of the American College of Cardiology. 2010 Apr 7. [Epub ahead of print] (PMID 20381283)
[2] McBride CM, Koehly LM, Sanderson SC, Kaphingst KA. “The behavioral response to personalized genetic information: will genetic risk profiles motivate individuals and families to choose more healthful behaviors?” Annual Review of Public Health. 2010 Apr 21;31:89-103. (PMID 20070198)

Two new genetic studies, both involving the recently identified TOMM40 gene, provide data supporting that Alzheimer’s disease could be diagnosed as early as 20 years prior to developing symptoms.

One of the studies, led by Dr. Mark Sager, director of the Wisconsin Alzheimer’s Institute and professor of medicine at the University of Wisconsin School of Medicine and Public Health, included 726 middle-aged and healthy individuals carrying the TOMM40 gene and with a family history of Alzheimer’s disease. According to the university’s website, “Researchers discovered that the 229 people with the high-risk version of TOMM40 did significantly worse on tests of learning and memory than study participants with the low-risk version.”

The second study was led by University of Wisconsin School of Medicine professor and Madison VA Hospital Geriatric Research of Education and Clinical Center researcher, Dr. Sterling Johnson. The data Johnson analyzed concluded “that healthy, middle-aged adults who have the high-risk version of TOMM40 had a significantly lower volume of gray matter in two brain regions affected in early Alzheimer’s disease.”

“This is the first study to associate TOMM40 to brain imaging in people at risk for Alzheimer’s,” said Johnson. “The research suggests that the group with the high-risk version of TOMM40 may be having early signs of cognitive and brain changes related to Alzheimer’s.”

This discovery in genetics and its connection with Alzheimer’s disease comes to the scientific and medical community on the heels of such revelatory studies as Boston University School of Medicine’s Risk Evaluation and Education for Alzheimer’s disease (REVEAL) study. The 2009 study concluded that, in general, there are not significant long-term risks, such as anxiety or depression, associated with receiving genetic test results. Researchers found that asymptomatic first-degree relatives of Alzheimer’s patients who received genetic testing results regarding a possible propensity for Alzheimer’s disease (the presence of an APOE ε4 allele) did not have a change in the levels of anxiety, depression or overall general distress. According to the study, “The disclosure of APOE genotyping results to adult children of patients with Alzheimer’s disease did not result in significant short-term psychological risks.”

Click here to read more about the studies led by Dr. Mark Sager and Dr. Sterling Johnson.

Click here to download the full text of Boston University School of Medicine’s REVEAL study (PDF).