Page URL:

Calls for more regulation of direct to consumer genetic tests

7 April 2008
Appeared in BioNews 452

The US Genetics and Public Policy Center at John Hopkins University, has called for increased regulation of direct to consumer genetic tests by the Food and Drug Administration (FDA). The recommendation follows a policy analysis, the results of which were published in the journal Science last week.

The group focused their study on genetic tests for CYP450 enzymes, which are instrumental in breaking down selective serotonin reuptake inhibitors (SSRIs), medicines used to treat depression. The companies marketing the tests claim that CYP450 genetic testing will give valuable information concerning the type of SSRI a person should take and the level of dose. However, the new report argues that this claim is unproven. While the FDA has certified that the test detects CYP450, it did not require the manufacturers to prove its usefulness to determine appropriate medication.

The report recommends that the FDA adopts closer regulation of genetic tests, especially those that are sold direct to consumer (DTC); creates a publicly accessible registry providing information about all available genetic tests; and increases its powers to prevent false or misleading claims regarding the benefits of genetic testing.  Sara Katsanis, an analyst at the Genetics and Public Policy Centre, warned: 'testing has a place in this society - but oversight needs to catch up so that the public doesn't get misinformed'.

In 2007 the Evaluation and Genomic Applications in Practice and Prevention (EGAPP) committee reported that the clinical evidence did not support the use of the CYP450 genetic tests to guide SSRI use. Despite this companies have continued to market the tests DTC. Howard Coleman, CEO of one such company - Genelex - has complained that the EGAPP standard is too high. He explained, 'we don't have clear clinical outcome studies, but I don't think there's any question that these genes do affect the levels of drugs in these patients'.

Despite pressure, the FDA has been reluctant to clamp down on misleading claims in DTC genetic testing. While the FDA sets high standards for specialised gene tests, most of the DTC tests marketed are lab-developed tests. Gail Javitt, a legal specialist at the Genetics and Public Policy Center, confirmed that the FDA did not oversee the vast majority of tests, commenting, 'their position is that they could regulate the process - but they're not going to'.

There are fears that patients taking the CYP450 test could stop taking their medication, or change the dose, on the basis of the results they receive. However, such results should be interpreted by doctors, and put into the wider context of the patient's lifestyle.

Beware genetic snake oil
Newsweek |  3 April 2008
Consumer gene tests: help or harm?
WebMD |  3 April 2008
Lawless gene-testing industry needs a sheriff
Wired |  4 March 2008
Marketing of unproven genetic tests a threat to public health
EurekaAlert |  3 April 2008
29 March 2010 - by Kyrillos Georgiadis 
The US National Institute of Health (NIH) has announced it plans to create a public Genetic Testing Registry (GTR). The database aims to improve the levels of information accessible to consumers, researchers and healthcare providers, about the availability, validity and clinical usefulness of genetic tests...
9 July 2009 - by MacKenna Roberts 
When giving evidence to the Lords' inquiry into genomic medicine, Health Minister Dawn Primarolo estimated that the vast potential benefits of genomic medicine will not largely be seen by patients for at least a decade. The House of Lords Science and Technology Committee respectfully but conclusively disagrees in its report on Genomic Medicine, published 7 July 2009. Lord Patel who chaired the inquiry surmised; 'Genomic medicine will clearly have a huge impact on health provision and the NHS
3 May 2009 - by Dr Rebecca Robey 
The German parliament has approved legislation severely restricting the use of genetic testing. Under the new laws, which have been debated for more than seven years, genetic tests may only be carried out under specific circumstances, and only then after professional medical consultation and with the consent...
15 September 2008 - by Ailsa Stevens 
BioNews reporting from the British Society for Human Genetics (BSHG) annual conference in York:By Ailsa Taylor: Clinical trials are urgently needed to validate the increasing number of experimental genetic tests available for assessing an individual's risk of developing serious common diseases, such as heart disease, stroke, diabetes and cancer...
to add a Comment.

By posting a comment you agree to abide by the BioNews terms and conditions

Syndicate this story - click here to enquire about using this story.