Most cancers are inherited and caused by viruses which got into our genes
From: habshi (habshi_at_anony.com)
Date: 12/29/04
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Date: Wed, 29 Dec 2004 00:26:46 GMT
We need anti DNA which will block these genes
rediff.com
Many cancers hereditary, says study
December 28, 2004 19:28 IST
Inheritance plays a part in 16 out of 27 cancers, a recent study
reveals.
The study, conducted by deCODE Genetics in Iceland, examined the rates
at which cancer occurred among all first to fifth-degree relatives of
32,000 patients who had cancer diagnosed between 1955 and 2002.
A first-degree relative is a parent or child or sibling who shares 50
per cent of an individual's DNA. Fifth-degree relatives, such as
great-great-great grandparents, share 3.125 per cent of DNA with the
patient.
Details of the study were published today in the open-access journal
Public Library of Science Medicine.
According to the report, a total of 27 cancers were studied, including
many of the most common such as lung, breast, prostate, colon and
skin.
For 16 of these, relatives of patients were at a significantly higher
risk of developing the disease.
The seven diseases with the highest increased familial occurrence both
in close and distant relatives were breast, prostate, stomach, lung,
colon, kidney and bladder cancers.
Stomach, lung and colon cancers were seen more frequently in the
partners of patients, suggesting the involvement of shared lifestyle
and environmental factors.
The study sheds light on the way in which different cancers follow
patterns of inheritance, and could help doctors to develop strategies
for detecting, treating and preventing diverse forms of the disease.
"The next step is to isolate the key genes contributing to the common
forms of the disease and to use this to develop better medicine," said
Kari Stefansson, chief executive of deCODE genetics.
"At the same time it is crucial to emphasise that lifestyle and
environmental factors play a very significant role in the development
of cancer."
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