Monday, April 13, 2009
A week away.
Posted by
Steve Murphy MD
at
4:59 AM
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comments
Labels: 23 and me, DNA direct, drudgereport, HHS, navigenics, SACGHS
Monday, March 2, 2009
New Family History tool to Debut
Over 6,000 known single-gene disorders. (This does not include multi-factorial diseases) “Every human disease has a genetic component.”
Family History: Can track an unlimited number of diseases. Any disease that has an inherited or genetic component can be listed on a family health history.
Genetic Tests: ~1,000 clinically relevant genetic tests available today. Most are for single-gene disorders, few adequate genetic tests are available for multi-factorial diseases. Direct-to-consumer (DTC) genetic testing services (# of diseases): 23andMe (26), deCODEme (35), Navigenics (23), Myriad BRCA (2).
ADVANTAGE: Family History
Posted by
Steve Murphy MD
at
5:02 AM
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Labels: complement factor H, DNA, family history, HHS, itrunsinmyfamily, surgeon general
Friday, April 13, 2007
Beware doctors bearing genetic tests!!!!
Today I am back on the soap box.
But I will also give a little worthwhile and scary data as well.
Yesterday I was at a cocktail party for the physicians in my upscale new england/new york town. I was speaking with an "educated" gastroenterologist. In fact this physician has been in practice for 29 years, went to medical school at Cornell, and is now part of a large practice in suburban NY. He told me that some "lab reps" from Myriad were now going to offices of Gastroenterology, Hematology/Oncology, and Primary Care physicians extolling the benefits of genetic testing for cancer predisposition. This physician said that because of this they are now testing younger patients for Hereditary Non-polyposis Colon Cancer/Lynch Syndrome
He went on to talk about a 37 year old woman who had early polyps, was tested, and was positive for a mutation in a DNA repair gene called MLH1. I told him that was great. Then I asked him who he uses for genetic counseling. His eyes glazed over, seeming not to understand the question. Slowly as if to save himself he said "What does she need that for? She's not having any kids." OMG, I almost lost it. Slowly I said "If you fail to counsel a positive test result, you will get sued." Then his eyes lit up "I better go tell her to get counseling" he said.
- Beware non-genetic doctors bearing genetic tests. 1 in 3 misinterpret tests for colon cancer.
- GI doctors maybe more likely to elicit cancer history in the family, but are less likely to notify AT RISK family or even let the patient know family is at risk
- In my education study that I will be presenting at the Association of Program Directors in Internal Medicine in San Diego I found some scary things as well.
- Residents in academic and community programs consistently fail genetics knowledge exams
- The confidence of an Internal Medicine resident physician in performing family histories is inversely proportional to their performance on knowledge exams!
- Physicians in practice now are even worse than the training physicians today
- But the scary thing is, the ones who have the confidence to DO genetics, actually have no knowledge in how to do it correctly.....That's why we need gene sherpas.
Posted by
Steve Murphy MD
at
3:43 AM
7
comments
Labels: Colon cancer, Craig Venter genes, direct to consumer, DNA, DNA direct, DTC, gene patents, genetic testing, geneticist, HHS, HNPCC, Myriad, personal genome, personalized medicine

