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Showing posts with label Family. Show all posts
Showing posts with label Family. Show all posts

Tuesday, August 13, 2013

Feds, Lacks Family Reach Deal on HeLa DNA

Associated Press

Some 60 years ago, a doctor in Baltimore removed cancer cells from a poor black patient named Henrietta Lacks without her knowledge or consent. Those cells eventually helped lead to a multitude of medical treatments and laid the groundwork for the multibillion-dollar biotech industry.

It's a saga made famous by the 2010 best-seller "The Immortal Life of Henrietta Lacks."

Now, for the first time, the Lacks family has been given a say over at least some research involving her cells.

Lacks' family members have never shared in any of the untold riches unlocked by the material, called HeLa cells, and they won't make any money under the agreement announced Wednesday by the family and the National Institutes of Health.

But they will have some control over scientists' access to the cells' DNA code. And they will receive acknowledgement in the scientific papers that result.

The agreement came after the family raised privacy concerns about making Henrietta Lacks' genetic makeup public. Since DNA is inherited, information from her DNA could be used to make predictions about the disease risk and other traits of her modern-day descendants.

Under the agreement, two family members will sit on a six-member committee that will regulate access to the genetic code.

Henrietta Lacks Cells.JPEG

"The main issue was the privacy concern and what information in the future might be revealed," David Lacks Jr., grandson of Henrietta Lacks, said at a news conference.

Jeri Lacks Whye, a granddaughter who lives in Baltimore, said: "In the past, the Lacks family has been left in the dark" about research stemming from HeLa cells. Now, "we are excited to be part of the important HeLa science to come."

Medical ethicists praised the NIH action. There was no legal obligation to give the family any control over access to the genetic data.

"They're doing the right thing," said Dr. Ellen Wright Clayton of Vanderbilt University's Centre for Biomedical Ethics and Society. "Having people at the table makes a difference in what you do," she said, noting that some Native American groups have a similar arrangement with researchers.

Rebecca Skloot, author of the acclaimed 2010 book, sat in on the negotiations leading to the agreement, and she said family members never demanded money.

"This discussion wasn't about money for them," she said. Skloot noted that family members are earning income from a packed schedule of speaking engagements and have also received donations from a foundation the writer established.

Henrietta Lacks, who died in 1951 at age 31, was being treated for aggressive cervical cancer at Johns Hopkins Hospital when the cells were removed. The lack of consent was typical of the time, long before modern-day rules were put in place.

The cells were the first human cells that could be grown indefinitely in a laboratory. They became crucial for key developments in such areas as vaccines and cancer treatments.

HeLa cells are the most widely used human cell line in existence today. But Lacks died of her disease without knowing about them, and family members didn't learn of them until 25 years later.

They weren't told in the 1970s, when doctors did research on Lacks' children. And in the 1980s, family medical records were published without family consent, according to Skloot.

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Friday, May 17, 2013

A BRCA Gene Mutation in the Family Does Not Increase Cancer Risk for Those Without the Mutation

For women who do not have a BRCA1 or BRCA2 gene mutation, having a close relative with one of these mutations does not increase breast cancer risk. These results were published in the Journal of Clinical Oncology.?

Inherited mutations in two genes—BRCA1 and BRCA2—have been found to greatly increase the lifetime risk of developing breast and ovarian cancer. Mutations in these genes can be passed down through either the mother’s or the father’s side of the family.????

Women who test negative for a BRCA gene mutation—but who have family members with a mutation—are generally thought to have a risk of breast cancer that’s similar to that of women in the general population. A study published in 2007, however, raised concerns that relatives of BRCA mutation carriers may have a substantially increased risk of breast cancer even if they test negative for their family’s mutation.[1]?

To further explore cancer risk among close relatives of people with BRCA mutations, researchers conducted a study among more than 3,000 families with at least one case of breast cancer; 160 families had a BRCA1 mutation and 132 families had a BRCA2 mutation.[2]?

For women without a BRCA mutation, breast cancer risk was similar whether or not the woman’s family had a BRCA mutation. These results suggest that coming from a family with a BRCA1 or BRCA2 gene mutation does not increase cancer risk for those who test negative for the mutation.?????

Although this is reassuring news, women who test negative for their family’s gene mutation should continue to follow cancer screening guidelines. These women do not have the very elevated cancer risk that their affected relatives have, but they can still get cancer.???

References:?

Posted November 9, 2011

[1] Smith A, Moran A, Boyd MC et al. Phenocopies in BRCA1 and BRCA2 families: evidence for modifier genes and implications for screening. Journal of Medical Genetics. 2007;44:10-15.?

[2] Kurian AW, Gong GD, John EM et al. Breast cancer risk for noncarriers of family-specific BRCA1 and BRCA2 mutations: findings from the Breast Cancer Family Study. Journal of Clinical Oncology. Early online publication October 31, 2011.?


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