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Wires, NYTimes, Salt Lake Trib, more: New, cheaper tests bring whole-genome analysis closer to doc’s office.

Big personal genome news today. Mutations and the diseases they cause are not exactly what had been thought. A whole family’s genome has been decoded, revealing vital new clues to how and why genetic diseases occur and what kind of mutations are behind them. A doctor with an inherited disease has had his genome decoded, with similar revelations about such mutations and his own individual details.

The study of the whole family is in the journal Science – a basic research vehicle that, like Nature and more specialized publications, has been the carrier of most genomics news until now. Tellingly, that of the doc with the disease is in the New England Journal of Medicine, a pub aimed straight at practicing physicians and a sure sign that the fast-dropping cost of sequencing individual genomes is already low enough to begin clinical impact.

Plenty of outlets leaped on the news. One worth a specific notice for a specific and enterprising reason is in the NYTimes by Nicholas Wade. He, as do other reporters, leads on the emergence of deeply detailed, bespoke genomics as a practical tool of medicine. But also in this is something I had not heard – that the expected vehicle for taking gene analysis out of the lab and into the clinic has been a big flop (my words, not Wade’s). The genome-wide association studies that were supposed to narrow the list of specific mutations behind common diseases, and thus offer screening tests for those vulnerable, have not found the expected, manageable list of targets. Instead, it turns out that while the same relatively few genes may be involved in many illnesses, the specific mutations that impair those genes are far more diverse than hoped.

On the other hand, it appears that, on average, parents pass fewer mutated genes to their children than had been supposed. The variety is greater but the number is smaller. Hmm. That’s a tough thought to process in the brain all at once. Is that good news in sum, or not? Either way, one hopes that targeted therapies will follow.

A question central to this site’s focus on journalism is whether this disappointment in genome wide association studies been reported in mass media before. Or did it take the arrival of better testing to get doctors and researchers talking about it to reporters? Good for Wade to have it now. But better investigative journalism, one thinks, should have turned this up already. There has been spot news (as see this HealthDay story in Business Week not long ago) but not, far as I can tell, very much. Perhaps we’ll get word here of others on the topic? I’ll update the post if so.

Other stories, one with a scoop on top:

Grist for the Mill:

Univ. of Utah Health Services Press Release ; Inst. of Systems Biology Press Release , More press info ; Complete Genomics Inc Press Release ; Baylor College of Medicine Press Release ;

Pic: DOE Poster, source ;

- Charlie Petit

4 Responses to “Wires, NYTimes, Salt Lake Trib, more: New, cheaper tests bring whole-genome analysis closer to doc’s office.”

  1. Paul Voosen Says:

    Nicholas Wade was ahead on the sputtering of GWAS, as far I know.

    http://www.nytimes.com/2009/04/16/health/research/16gene.html

    Still, it was hardly given a high profile at the time.


  2. Megan Scudellari Says:

    A few months ago, Kelly Rae Chi covered GWAS for Nature: http://www.nature.com/news/2009/091007/full/461712a.html


  3. Don Monroe Says:

    I’ve been hearing about the disappointing results of genome-wide association studies in journals and conferences for several years now. Wade himself wrote about it, in the context of schizophrenia, last summer.

    If it has been under-covered in the popular press, I’d guess it’s because researchers are still trying to understand what it all means, so there’s no nice replacement story. For example, I don’t think it’s clear that, in general, “relatively few genes” are always involved, just with different mutations. Many of the studies turn up weak effects of many different mutations in many different genes, or as Wade points out, in regions with no known function. The interfamily comparisons help to clarify which genetic differences are meaningful, because there are so few of them, but that doesn’t mean that’s all there are.

    Wade did a great job with the science later in the story. Still, I think many of his readers would have benefited from a clearer explanation near the top of how sequencing the entire genome differs from the commercial genotyping that has gotten such extensive press coverage recently.


  4. childminding Says:

    childrens care…

    Knight Science Journalism Tracker » Blog Archive » Wires, NYTimes, Salt Lake Trib, more: New, cheaper tests bring whole-genome analysis closer to doc’s office….


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