Personalized Medicine Based on Patient's Own Genetic 'baggage' may Be a Reality Soon

by Rajshri on  June 23, 2008 at 2:42 PM Genetics & Stem Cells News
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 Personalized Medicine Based on Patient's Own Genetic 'baggage' may Be a Reality Soon
Minor genetic differences in individuals affect how a common drug acts in a body, a new study has said, adding that the finding may pave the way for personalized medicine in people.

The study was conducted by Dr Rima Rozen of the Research Institute of the McGill University Health Centre (RI MUHC) at the Montreal Children's Hospital and McGill University.

For the study, Rozen measured the impact of Methotrexate - a drug that inhibits the metabolism of folate - on mice with an altered MTHFR gene, which is a gene crucial for folate metabolism.

She found that after treatment with Methotrexate, mice with the altered gene had approximately 20 per cent less hemoglobin and red blood cells than their counterparts with non-altered genes.

The altered mice also showed increased susceptibility to liver and kidney damage following treatment.

"We know that these results are applicable to humans because a parallel mutation in the human MTHFR gene affects human folate metabolism similarly. The results demonstrate that medication affects subjects differently according to individual genetic traits. And tests exist to detect this mutation," Dr. Rozen said.

Genetic testing would allow physicians the modify treatment based on each patient's personal genetic makeup, limiting potential side effects.

"This is a first step towards personalized medicine that is based not only on symptoms but also on the patient's own genetic 'baggage.' This trend definitely represents the medicine of the future," Rozen said.

The study is published in the journal Pharmacogenetics and Genomics.

Source: ANI
RAS/L

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