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	<title>Comments on: DNA Direct and deCODE Offering TCF7L2 Genetic Testing for Type 2 Diabetes</title>
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	<link>http://www.blisstree.com/articles/dna-direct-and-decode-to-offer-tcf7l2-genetic-testing/</link>
	<description>Family, Health, Home and Lifestyles</description>
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		<title>By: Diabetes Medications by Pharmacy</title>
		<link>http://www.blisstree.com/articles/dna-direct-and-decode-to-offer-tcf7l2-genetic-testing/comment-page-1/#comment-568932</link>
		<dc:creator>Diabetes Medications by Pharmacy</dc:creator>
		<pubDate>Thu, 01 Nov 2007 13:51:11 +0000</pubDate>
		<guid isPermaLink="false">http://www.geneticsandhealth.com/2007/04/16/dna-direct-and-decode-to-offer-tcf7l2-genetic-testing/#comment-568932</guid>
		<description>[...] DNA Direct and deCODE Offering TCF7L2 Genetic Testing for Type 2 Diabetes  b5media.com Advertise with us Enjoying this blog? Check out the rest of the Science &amp; Health Channel Genetics and Health Subscribe to Genetics and Health Add Genetics and Health to del.icio.us Add Genetics and Health to Google Reader DNA Direct and deCODE [...]</description>
		<content:encoded><![CDATA[<p>[...] DNA Direct and deCODE Offering TCF7L2 Genetic Testing for Type 2 Diabetes  b5media.com Advertise with us Enjoying this blog? Check out the rest of the Science &amp; Health Channel Genetics and Health Subscribe to Genetics and Health Add Genetics and Health to del.icio.us Add Genetics and Health to Google Reader DNA Direct and deCODE [...]</p>
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		<title>By: Clarification on Working for DNA Direct &#8212; Eye on DNA</title>
		<link>http://www.blisstree.com/articles/dna-direct-and-decode-to-offer-tcf7l2-genetic-testing/comment-page-1/#comment-568550</link>
		<dc:creator>Clarification on Working for DNA Direct &#8212; Eye on DNA</dc:creator>
		<pubDate>Thu, 17 May 2007 09:42:26 +0000</pubDate>
		<guid isPermaLink="false">http://www.geneticsandhealth.com/2007/04/16/dna-direct-and-decode-to-offer-tcf7l2-genetic-testing/#comment-568550</guid>
		<description>[...] emailed to ask why I never told anyone I was employed by DNA Direct when I wrote about them in the past. For one thing, I only signed the contract with DNA Direct on Tuesday, May 15, 2007. As soon as I [...]</description>
		<content:encoded><![CDATA[<p>[...] emailed to ask why I never told anyone I was employed by DNA Direct when I wrote about them in the past. For one thing, I only signed the contract with DNA Direct on Tuesday, May 15, 2007. As soon as I [...]</p>
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		<title>By: Steve Murphy MD</title>
		<link>http://www.blisstree.com/articles/dna-direct-and-decode-to-offer-tcf7l2-genetic-testing/comment-page-1/#comment-568498</link>
		<dc:creator>Steve Murphy MD</dc:creator>
		<pubDate>Sun, 06 May 2007 11:58:19 +0000</pubDate>
		<guid isPermaLink="false">http://www.geneticsandhealth.com/2007/04/16/dna-direct-and-decode-to-offer-tcf7l2-genetic-testing/#comment-568498</guid>
		<description>Once again DeCODE has found another &quot;region&quot;. Which was also found in Ottawa. It looks promising. But it is not a gene...yet. What will the DTC companies do now?

-Steve
www.thegenesherpa.blogspot.com</description>
		<content:encoded><![CDATA[<p>Once again DeCODE has found another &#8220;region&#8221;. Which was also found in Ottawa. It looks promising. But it is not a gene&#8230;yet. What will the DTC companies do now?</p>
<p>-Steve<br />
<a href="http://www.thegenesherpa.blogspot.com" rel="nofollow">http://www.thegenesherpa.blogspot.com</a></p>
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		<title>By: Gene Genie Number 5 at Neurophilosophy &#171; Gene Genie</title>
		<link>http://www.blisstree.com/articles/dna-direct-and-decode-to-offer-tcf7l2-genetic-testing/comment-page-1/#comment-568504</link>
		<dc:creator>Gene Genie Number 5 at Neurophilosophy &#171; Gene Genie</dc:creator>
		<pubDate>Sun, 06 May 2007 06:43:45 +0000</pubDate>
		<guid isPermaLink="false">http://www.geneticsandhealth.com/2007/04/16/dna-direct-and-decode-to-offer-tcf7l2-genetic-testing/#comment-568504</guid>
		<description>[...] of all, Hsein-Hsein Lei provides details about a DNA test for Type 2 diabetes at Genetics &amp; Health. Type 2 (or non-insulin dependent) diabetes, is a metabolic disorder that [...]</description>
		<content:encoded><![CDATA[<p>[...] of all, Hsein-Hsein Lei provides details about a DNA test for Type 2 diabetes at Genetics &amp; Health. Type 2 (or non-insulin dependent) diabetes, is a metabolic disorder that [...]</p>
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		<title>By: deCODE Genetics Finds New Gene Variant for Heart Attacks</title>
		<link>http://www.blisstree.com/articles/dna-direct-and-decode-to-offer-tcf7l2-genetic-testing/comment-page-1/#comment-568423</link>
		<dc:creator>deCODE Genetics Finds New Gene Variant for Heart Attacks</dc:creator>
		<pubDate>Fri, 04 May 2007 00:39:38 +0000</pubDate>
		<guid isPermaLink="false">http://www.geneticsandhealth.com/2007/04/16/dna-direct-and-decode-to-offer-tcf7l2-genetic-testing/#comment-568423</guid>
		<description>[...] Disease deCODE Genetics has done it again. Last month, together with DNA Direct, they released a direct-to-consumer genetic test for diabetes risk and announced that they&#8217;d found more genes for diabetes. Today, deCODE released results [...]</description>
		<content:encoded><![CDATA[<p>[...] Disease deCODE Genetics has done it again. Last month, together with DNA Direct, they released a direct-to-consumer genetic test for diabetes risk and announced that they&#8217;d found more genes for diabetes. Today, deCODE released results [...]</p>
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		<title>By: Steve</title>
		<link>http://www.blisstree.com/articles/dna-direct-and-decode-to-offer-tcf7l2-genetic-testing/comment-page-1/#comment-568497</link>
		<dc:creator>Steve</dc:creator>
		<pubDate>Sat, 28 Apr 2007 01:38:39 +0000</pubDate>
		<guid isPermaLink="false">http://www.geneticsandhealth.com/2007/04/16/dna-direct-and-decode-to-offer-tcf7l2-genetic-testing/#comment-568497</guid>
		<description>Last one I promise.
The TCF7L2 is involved in signalling and may very well represent what we call a developmental predisposition. The family of proteins it plays a role in is Wnt signalling. This is involved in the development of the gut. It is fishy to raise the possibilty without mentioning that the damage could have already been done in utero. Similar predisposition may be involved with COPD (emphysema). 
From NEJM Volume 355:306-308  July 20, 2006  Number 3 
&quot;Does this new genetic information have any practical health implications? At first glance, TCF7L2 is not the most attractive of drug targets, since it is closely involved in fundamental developmental processes. The main effect of the high-risk single-nucleotide polymorphisms in relation to diabetes may be developmental and may not be amenable to therapeutic manipulation in the adult patient.&quot; 

Do you see how confusing the data is? I sure do.
The jury&#039;s still out. At least in my mind.
-Steve
www.thegenesherpa.blogspot.com</description>
		<content:encoded><![CDATA[<p>Last one I promise.<br />
The TCF7L2 is involved in signalling and may very well represent what we call a developmental predisposition. The family of proteins it plays a role in is Wnt signalling. This is involved in the development of the gut. It is fishy to raise the possibilty without mentioning that the damage could have already been done in utero. Similar predisposition may be involved with COPD (emphysema).<br />
From NEJM Volume 355:306-308  July 20, 2006  Number 3<br />
&#8220;Does this new genetic information have any practical health implications? At first glance, TCF7L2 is not the most attractive of drug targets, since it is closely involved in fundamental developmental processes. The main effect of the high-risk single-nucleotide polymorphisms in relation to diabetes may be developmental and may not be amenable to therapeutic manipulation in the adult patient.&#8221; </p>
<p>Do you see how confusing the data is? I sure do.<br />
The jury&#8217;s still out. At least in my mind.<br />
-Steve<br />
<a href="http://www.thegenesherpa.blogspot.com" rel="nofollow">http://www.thegenesherpa.blogspot.com</a></p>
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		<title>By: Steve</title>
		<link>http://www.blisstree.com/articles/dna-direct-and-decode-to-offer-tcf7l2-genetic-testing/comment-page-1/#comment-568499</link>
		<dc:creator>Steve</dc:creator>
		<pubDate>Sat, 28 Apr 2007 00:40:39 +0000</pubDate>
		<guid isPermaLink="false">http://www.geneticsandhealth.com/2007/04/16/dna-direct-and-decode-to-offer-tcf7l2-genetic-testing/#comment-568499</guid>
		<description>Lastly,
In the article: &quot;However, we did not observe any effect of genotype at these loci in the lifestyle-intervention group, raising the &#039;possibility&#039; that a behavioral intervention can mitigate the risk conferred by genetic background.” 

The &quot;possibility&quot; is not strong enough to state it as fact. But luckily in this case exercise and diet is not as risky as a drug eluting stent or Vioxx........
-Steve
www.thegenesherpa.blogspot.com</description>
		<content:encoded><![CDATA[<p>Lastly,<br />
In the article: &#8220;However, we did not observe any effect of genotype at these loci in the lifestyle-intervention group, raising the &#8216;possibility&#8217; that a behavioral intervention can mitigate the risk conferred by genetic background.” </p>
<p>The &#8220;possibility&#8221; is not strong enough to state it as fact. But luckily in this case exercise and diet is not as risky as a drug eluting stent or Vioxx&#8230;&#8230;..<br />
-Steve<br />
<a href="http://www.thegenesherpa.blogspot.com" rel="nofollow">http://www.thegenesherpa.blogspot.com</a></p>
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		<title>By: Steve</title>
		<link>http://www.blisstree.com/articles/dna-direct-and-decode-to-offer-tcf7l2-genetic-testing/comment-page-1/#comment-568500</link>
		<dc:creator>Steve</dc:creator>
		<pubDate>Sat, 28 Apr 2007 00:35:01 +0000</pubDate>
		<guid isPermaLink="false">http://www.geneticsandhealth.com/2007/04/16/dna-direct-and-decode-to-offer-tcf7l2-genetic-testing/#comment-568500</guid>
		<description>Lisa,
Thanks for the information. I reviewed the article and several of the cited sources. As for the graphics: Graphs can be made to look stronger than they are, that is why the gold standard for statistical significance is the p-value. Often the lay public and journalists look at the pretty graphs. With a non-significant evaluation, it would be foolhardy to conclude anything and hope it to stand up in a jury trial.
In addition the Department of Endocrinology at Yale University School of Medicine does not hold the same opinion as the clinicians that you may have spoken with.
Genetic testing is a complex issue, as is all of  healthcare. In the end genetic testing will be just fine. GINA will get passed and no one will be at risk for discrimination. But I hope we don&#039;t miss a bunch of iron overload, or diabetes because we rely on a false sense of security because fo a test. 
It&#039;s my job as an MD to eval the science and apply it clinically, not the patients&#039;...for now.
-Steve
www.thegenesherpa.blogspot.com</description>
		<content:encoded><![CDATA[<p>Lisa,<br />
Thanks for the information. I reviewed the article and several of the cited sources. As for the graphics: Graphs can be made to look stronger than they are, that is why the gold standard for statistical significance is the p-value. Often the lay public and journalists look at the pretty graphs. With a non-significant evaluation, it would be foolhardy to conclude anything and hope it to stand up in a jury trial.<br />
In addition the Department of Endocrinology at Yale University School of Medicine does not hold the same opinion as the clinicians that you may have spoken with.<br />
Genetic testing is a complex issue, as is all of  healthcare. In the end genetic testing will be just fine. GINA will get passed and no one will be at risk for discrimination. But I hope we don&#8217;t miss a bunch of iron overload, or diabetes because we rely on a false sense of security because fo a test.<br />
It&#8217;s my job as an MD to eval the science and apply it clinically, not the patients&#8217;&#8230;for now.<br />
-Steve<br />
<a href="http://www.thegenesherpa.blogspot.com" rel="nofollow">http://www.thegenesherpa.blogspot.com</a></p>
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		<title>By: Lisa Lee</title>
		<link>http://www.blisstree.com/articles/dna-direct-and-decode-to-offer-tcf7l2-genetic-testing/comment-page-1/#comment-568501</link>
		<dc:creator>Lisa Lee</dc:creator>
		<pubDate>Fri, 27 Apr 2007 23:30:59 +0000</pubDate>
		<guid isPermaLink="false">http://www.geneticsandhealth.com/2007/04/16/dna-direct-and-decode-to-offer-tcf7l2-genetic-testing/#comment-568501</guid>
		<description>Wow. Quite a dialogue going here!

Barry: Actually I agree with you – I don’t want  people to waste money on genetic tests that won’t help them, either. It’s all about useful testing, for the right people, through the right venue.

At DNA Direct, I strive to present detailed information about test results, risk, current research and preventive measures -- BEFORE people purchase a test. As a prelude to the purchase process, there&#039;s an interactive questionnaire the provides response about appropriateness of testing, just in case people don’t read the rest of the site. I&#039;d love your feedback, too, on whether we&#039;ve adequately addressed your concerns. 

(To clarify “feedback” since Steve misunderstood -- I&#039;m always looking for readers reactions to our content -- whether patient, health wonk, clinician, etc. What I care about is not just that we provide accurate info, but that how people READ and understand it is also accurate. All too often, medical-speak is accurate but misunderstood by laypeople, and that can be very dangerous.)

Everyone might be interested in knowing that all DNA Direct&#039;s website and individual, Personalized Reports that testers receive undergo a minimum 3-step clinical review process: a subject matter (in this case of the deCODE test, an MD diabetes expert and physician educator), our clinical director (CGC) and our medical director (MD, PhD geneticist). In the case of deCODE, because it is a new area without medical guidelines, we also worked with deCODE&#039;s clinical team and medical advisors to really dig into the research in addition to our own experts and advisors.

At the end of the day, I guess I fall in line with Hsien’s perspective. We all have to take responsibility. As healthcare consumers, we are agents who should make educated decisions. As healthcare providers, it’s imperative that we provide sound, ethical services. I chose to work for DNA Direct because of the diligence with which the people and company were approaching this new model of providing genetic counseling, education and testing services. (See &lt;a href=&quot;“http://www.geneticsandhealth.com/2006/08/31/genetics-interview-14-lisa-lee-of-dna-direct-talk/”&quot;&gt;my interview with Hsien’s&lt;/a&gt; for more, or DNA Direct’s &lt;a href=&quot;“a&quot;&gt;Standards &amp; Guideline for Company and Consumers&lt;/a&gt;)

On Hemochromatosis: DNA Direct provides counseling and testing for HFE. &lt;a href=&quot;“http://genesanddrugs.dnadirect.com/patients/tests/hemochromatosis/index.jsp&quot;&gt;See here.&lt;/a&gt; Let me know if you don’t find the info you need :-) Also, the &lt;a href=&quot;”&quot;&gt;Iron Disorders Institute&lt;/a&gt; has great resources.

Steve: regarding P values and the DPP trial (NEJM 2006), see the researchers conclusions: “Finally, we did not detect significant interactions between genotypes at either SNP and the DPP interventions. The absence of an effect may not be surprising, since these interventions succeeded primarily by improving insulin sensitivity and these variants affect insulin secretion. However, we did not observe any effect of genotype at these loci in the lifestyle-intervention group, raising the possibility that a behavioral intervention can mitigate the risk conferred by genetic background.” Looking at the graphs in the article gives a pretty strong visual for this argument. All the clinicians I’ve spoken with concur with this interpretation.</description>
		<content:encoded><![CDATA[<p>Wow. Quite a dialogue going here!</p>
<p>Barry: Actually I agree with you – I don’t want  people to waste money on genetic tests that won’t help them, either. It’s all about useful testing, for the right people, through the right venue.</p>
<p>At DNA Direct, I strive to present detailed information about test results, risk, current research and preventive measures &#8212; BEFORE people purchase a test. As a prelude to the purchase process, there&#8217;s an interactive questionnaire the provides response about appropriateness of testing, just in case people don’t read the rest of the site. I&#8217;d love your feedback, too, on whether we&#8217;ve adequately addressed your concerns. </p>
<p>(To clarify “feedback” since Steve misunderstood &#8212; I&#8217;m always looking for readers reactions to our content &#8212; whether patient, health wonk, clinician, etc. What I care about is not just that we provide accurate info, but that how people READ and understand it is also accurate. All too often, medical-speak is accurate but misunderstood by laypeople, and that can be very dangerous.)</p>
<p>Everyone might be interested in knowing that all DNA Direct&#8217;s website and individual, Personalized Reports that testers receive undergo a minimum 3-step clinical review process: a subject matter (in this case of the deCODE test, an MD diabetes expert and physician educator), our clinical director (CGC) and our medical director (MD, PhD geneticist). In the case of deCODE, because it is a new area without medical guidelines, we also worked with deCODE&#8217;s clinical team and medical advisors to really dig into the research in addition to our own experts and advisors.</p>
<p>At the end of the day, I guess I fall in line with Hsien’s perspective. We all have to take responsibility. As healthcare consumers, we are agents who should make educated decisions. As healthcare providers, it’s imperative that we provide sound, ethical services. I chose to work for DNA Direct because of the diligence with which the people and company were approaching this new model of providing genetic counseling, education and testing services. (See <a href="“http://www.geneticsandhealth.com/2006/08/31/genetics-interview-14-lisa-lee-of-dna-direct-talk/”">my interview with Hsien’s</a> for more, or DNA Direct’s <a href="“a">Standards &amp; Guideline for Company and Consumers</a>)</p>
<p>On Hemochromatosis: DNA Direct provides counseling and testing for HFE. <a href="“http://genesanddrugs.dnadirect.com/patients/tests/hemochromatosis/index.jsp">See here.</a> Let me know if you don’t find the info you need <img src='http://www.blisstree.com/wp-includes/images/smilies/icon_smile.gif' alt=':-)' class='wp-smiley' />  Also, the <a href="”">Iron Disorders Institute</a> has great resources.</p>
<p>Steve: regarding P values and the DPP trial (NEJM 2006), see the researchers conclusions: “Finally, we did not detect significant interactions between genotypes at either SNP and the DPP interventions. The absence of an effect may not be surprising, since these interventions succeeded primarily by improving insulin sensitivity and these variants affect insulin secretion. However, we did not observe any effect of genotype at these loci in the lifestyle-intervention group, raising the possibility that a behavioral intervention can mitigate the risk conferred by genetic background.” Looking at the graphs in the article gives a pretty strong visual for this argument. All the clinicians I’ve spoken with concur with this interpretation.</p>
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		<title>By: Steven Murphy MD</title>
		<link>http://www.blisstree.com/articles/dna-direct-and-decode-to-offer-tcf7l2-genetic-testing/comment-page-1/#comment-568502</link>
		<dc:creator>Steven Murphy MD</dc:creator>
		<pubDate>Fri, 27 Apr 2007 21:16:29 +0000</pubDate>
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		<description>Do you have an email address?
-Steve
www.thegenesherpa.blogspot.com</description>
		<content:encoded><![CDATA[<p>Do you have an email address?<br />
-Steve<br />
<a href="http://www.thegenesherpa.blogspot.com" rel="nofollow">http://www.thegenesherpa.blogspot.com</a></p>
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