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Glenn Nichols, surrounded by his hospice team. The author is in yellow.

Genetic Linkage

Supreme Court BRCA Decision: Use Correct Terminology!

June 14, 2013

Tags: Supreme Court, BRCA1, BRCA2, gene patents, DNA, composite DNA

(credit: Dept of Energy)
Earlier today, my “in” box began to fill with info from everyone I’ve ever met letting me know that the Supreme Court had ruled on the Myriad case about patenting the breast cancer genes BRCA1 and BRCA2. I also received a dozen pitches from PR people offering me all manner of instant interviews with lawyers, doctors, bioethicists, and health care analysts.

No one offered me an interview with a geneticist – a person who knows something about DNA. So being such a person myself, I decided to take a look at the decision. And I found an error right smack in the opening paragraph: (more…)

Genetic Modifiers: Healthy Mutants Fuel Drug Discovery

April 12, 2013

Tags: BRCA1, BRCA2, incomplete penetrance, 23andMe, exome, genome, genetic counseling, amyloidosis, Alzheimer, Parkinson

Disease-causing mutations in healthy people suggest new drug targets. (NHGRI)
I’m uneasy counseling a patient for mutations in the BRCA1 or BRCA2 cancer susceptibility genes. Typically, she’ll have a “first degree relative” – usually a mother or sister – with a related cancer, or might even have a test result in hand. This happened a week ago.

FUZZY GENETIC INFORMATION
My patient comes from a long line of female relatives who’d died young from breast or ovarian cancer. She’s already been tested and knows she has a BRCA1 mutation. Will she get the family’s cancer? Knowing would enable her to decide whether and when to undergo surgery to remove her breasts, ovaries, and uterus. (more…)

Genetic Testing: Carrier Confusion & Generation Reversal

February 5, 2013

Tags: breast cancer, direct-to-consumer genetic testing, 23andMe, BRCA1, genetic counseling, genome

A breast cancer cell. (Natl Cancer Inst)
In the usual trajectory of passing on genetic information, the older tell the younger, when the time is right. Typically, a patient has a genetic test because family history, ethnic group, or some other clue suggests to an astute practitioner an increased risk of something specific.

If a test reveals a mutation that could cause a disease, then the patient and perhaps her partner discuss how, when and what to tell their children – in the best of circumstances, with the help of a genetic counselor. (more…)

My New View of DTC Genetic Testing

February 15, 2012

Tags: direct-to-consumer genetic testing, BRCA1, breast cancer, 23andMe, Ricki Lewis, Alden March Bioethics Institute, Myriad Genetics, gene patenting, Ashkenazi Jews, genetic counseling, spit test, Parkinson's disease, National Institutes of Health, More Magazine

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“Are you still collecting stories about DTC testing? I've got one for you!” my grad student L.W. e-mailed a few days ago. Little did I know her family's experience would change my mind about direct-to-consumer genetic testing.

L.W. had taken my online course “Genethics” in 2008 for the master’s program at the Alden March Bioethics Institute of Albany Medical College. (more…)

Personal Genome Sequencing: Too Much Information?

October 18, 2011

Tags: whole exome sequencing, human genome, DNA, Michael Hayden, James Watson, Han G. Brunner, International Congress of Human Genetics, Complete Genomics, Radoje Drmanac, Segolene Ayme, Joris Veltman, Luanne Hudgins, OrphanNet, rare diseases, Huntington's disease, BRCA1, Lynch syndrome, incidentaloma, Leslie Biesecker, National Human Genome Research Institute, Personal Genome Sequencing: Too Much Information?, ICHG2011

October 11-15, 6,200 researchers and clinicians met in Montreal for the 12th International Congress of Human Genetics. After my brain recovered from the long days of meetings, one panel discussion emerged as my favorite: what I thought was going to be a dull comparison of DNA sequencing technologies turned out to be a spirited look at (more…)

Jim Watson at International Congress of Human Genetics

October 11, 2011

Tags: James Watson, International Congress of Human Genetics, whole genome sequencing, ApoE4, American Society of Human Genetics, Kevin Davies, schizophrenia, $1, 000 Genome, Craig Venter, Alzheimer's disease, Myriad Genetics, BRCA1

Montreal, Oct. 11, 2011 -- James Watson joined a panel of “genome pioneers” at the opening session of the 12th International Congress of Human Genetics today. He was invited, besides his fame, because he was the second person to have his genome sequenced (Craig Venter was first), but his comments revealed that perhaps his most telling qualification is that he has a son who has schizophrenia. Known for his controversial views, Dr. Watson did not disappoint. (more…)

instruction
Project to engage students in helping families with rare genetic diseases
Book Club Reader's Guide
Many challenging questions to stimulate thought and discussion.
Instructor's Guide
38 discussion questions to get students thinking and talking about gene therapy, including the science, ethical issues, and the drug approval process.
Narrative science
The Forever Fix is the uplifting true story of 8-year-old Corey Haas, who was cured of hereditary blindness just 4 days after gene therapy.
College Textbooks
A spectacularly-illustrated, clearly written human anatomy and physiology textbook, used in pre-health profession programs throughout the U.S.
A highly engaging, clearly written, beautifully illustrated introduction to the science of human genetics for the non-scientist. Now in its 11th edition, 12th to be published in September 2018.
Nonfiction
An ideal starting point for anyone who wants to know more about genes, DNA, genomes, and the genetic ties that bind us all.

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