ParagonDx Receives FDA 510(k) Marketing Clearance For Warfarin Sensitivity Genotyping Kit
Main Category: Blood / HematologyAlso Included In: Regulatory Affairs / Drug Approvals
Article Date: 07 May 2008 - 2:00 PDT
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ParagonDx, a leader in genetic testing diagnostics, has received 510(k) marketing clearance from the US Food and Drug Administration (FDA) for its in vitro diagnostic test. The Rapid Genotyping Assay is to be used to detect the presence of variations in the genes CYP2C9 and VKORC1. Information about the CYP2C9 and VKORC1 genotypes may be used as an aid in the identification of patients at greater risk for warfarin sensitivity. Warfarin, also known as Coumadin®, is a blood thinner that prevents and treats blood clots. ParagonDx's genotyping assay is the first cleared product to deliver results in less than one hour and incorporate human genomic quality controls.
In the US there are over 30 million patients being treated on a regular basis with warfarin. Two million of those are new patients just beginning warfarin treatment. In August 2007, the FDA relabeled warfarin to recommend that genetic testing be performed before initiating warfarin therapy. The ParagonDx test can be used to help prevent some of the most serious adverse events for warfarin patients including excessive bleeding which occurs in 10% to 16% of all patients.
This is the first test that can easily be done within a one-hour turnaround time, bringing a significant advantage to patients because their treatment can be customized quickly, when time is of the essence.
"Our genetic kit represents a significant advancement towards dealing with a potentially life threatening situation," said Michael Murphy, president and CEO of ParagonDx. "An individual's genetic make-up clearly affects his or her response to warfarin. Getting this information to physicians quickly will decrease the chance that patients will have excessive bleeding or another heart attack or stroke. The inclusion of quality controls in the kit will provide the kind of assurance that laboratories need to ensure accuracy and reliability."
ParagonDx's Rapid Genotyping Assay - CYP2C9 & VKORC1 was cleared by the FDA using the Cepheid's SmartCycler® Dx platform.
About ParagonDx
ParagonDx, located in Research Triangle Park, NC, is a leading provider of applied molecular diagnostic products. Initially a pioneer in the field of pharmacogenomics, ParagonDx has broadened it expertise into molecular diagnostic products. ParagonDx develops and markets reference controls for laboratory quality control and diagnostic kits that bring the promise of personalized medicine to physicians and patients. ParagonDx was the first company to bring FDA-cleared human genomic reference controls to the market. These products will enhance patient safety, improve patients' response to therapy and help realize the promise of personalized medicine.
ParagonDx
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Visitor Opinions In Chronological Order (2)
Home Monitoring Of INR Of Even Greater Value
posted by Elizabeth F Cole MD on 19 May 2008 at 9:50 amBecause of variations in the amount of vit K intake and other substances affecting clotting, variations in INR/PTT also due to other factors such as addition of other medications, the actual dosage of warfarin required by a patient varies to some extent from day to day. Dosage requirements of warfarin medication is never rigid and needs to be addressed by relatively frequent testing to keep INR/PTT in appropriate range depending on the conditions for which warfarin is required. Therefore, a standard constant dose of warfarin is inappropriate for any patient taking warfarin. Home monitors of INR/PTT are easy to use with training, can be a better solution than any to determine what dose of warfarin is required on any day according to intake of other factors that can alter clotting factors. This simple solution, though it involves the expense of the monitor and test strips, is far less expensive than attending to complications that arise with under or overtreatment with warfarin, and is undoubtedly less expensive than tests run in hospital or commercial laboratories which almost never provide timely information about the next dose of warfarin required. In addition to the fact that the results are known immediately, home monitors guarantee there is no possibility that the INR/PTT result obtained belong to another patient, causing inadequate or overtreatment.
With home monitoring, including immediate access to professional advice regarding change in dosage available by phone or email, safety in warfarin therapy is a cinch. The reputation of dangers of warfarin therapy are largely due to the false assumption that a constant standard dose is required and the not infrequent late or misidentified results from a commercial lab.
Home Monitoring Of INR
posted by Laura Sue on 20 May 2008 at 8:36 amWould be great for me. I've been taking warfarin for 10 yrs. now, since dx of Factor V Leiden.
Just checked prices on this device - holy cow! Over $1,400?? We all know Medicare won't touch that - I checked.
Thanks for your great opinion piece. It was logical, and I do love common sense!!
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