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New WHO guidelines urge phaseout of HIV drug

Published on Mon, Nov 30, 2009 at 10:04   |  Updated at Mon, Nov 30, 2009 at 10:39  |  Source : Reuters

Countries should phase out the use of Stavudine, the most widespread antiretroviral, because of "long-term, irreversible" side-effects in HIV patients including wasting and a nerve disorder, the World Health Organisation said on Monday.

In sweeping changes to its guidelines, the WHO also recommended that people with HIV, including pregnant women, should start taking antiretroviral drugs earlier to live a longer and healthier life.

For the first time it advised HIV-positive women and their babies to take the drugs while breastfeeding to prevent mother-to-child transmission of the virus that causes AIDS.


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Stavudine, also known as d4T, is marketed as Zerit by US drugmaker Bristol-Myers Squibb Co. Generic versions are made by Cipla Ltd, Aurobindo Pharma Ltd and Strides Arcolab Ltd, all of India.

Stavudine, widely available in developing countries as a first-line therapy, is relatively cheap and easy to use, according to the United Nations agency.

But it causes a nerve disorder leading to numbness and burning pain in the hands and feet, and loss of body fat known as lipoatrophy or wasting, it said, conditions that are "disabling and disfiguring".

Less toxic alternatives
The WHO recommended "that countries progressively phase out the use of Stavudine as a preferred first-line therapy option and move to less toxic alternatives such as Zidovudine (AZT) or Tenofovir (TDF)". These are "equally effective alternatives."

Zidovudine was first manufacturerd by GlaxoSmithKline Plc whose patent expired in 2005. Aurobindo and Ranbaxy Laboratories, also of India, are among makers of the generic version. Tenofovir is marketed by Gilead Sciences under the name of Viread.

Of over 4 million people globally who take antiretrovirals, about half are on a regimen containing stavudine, down from 80 percent in 2006 when the WHO first said countries should envisage moving away from it because of its long-term effects, according to Dr. Siobhan Crowley of WHO's HIV/AIDS Department.

"It is the most widely used. There is a trend moving away from it. We think it will take some time," she told Reuters.

An earlier start to treatment of HIV-infected adults and adolescents with antiretrovirals reduces their viral load much sooner and therefore also lowers the risk of them spreading the virus, according to the WHO.

"The new recommendations are based on a solid body of evidence indicating that rates of death, morbidity and HIV and tuberculosis tranmissions are all reduced by starting treatment earlier. This prolongs and improves quality of life," it said.

An estimated 33.4 million people worldwide, two thirds of them in sub-Saharan Africa, are infected with the AIDS virus, an annual United Nations report said last week.

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