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Japan approves remdesivir as COVID cure

Japan has authorized the antiviral drug remdesivir to treat coronavirus patients, the government said, with a plan to approve another medication Avigan this May.

This makes Japan the second country to approve the drug after US regulators authorized it for emergency use against severe cases of COVID-19.

“Remdesivir was approved under exceptional measures,” a health, labor and welfare ministry official said.

“It was our country’s first such approval for the treatment of coronavirus patients,” the official told AFP.

Prime Minister Shinzo Abe said last week the government was getting ready to give a speedy green light to the experimental drug developed by US firm Gilead Sciences.

The US go-ahead came after a major clinical trial showed remdesivir – originally developed to treat Ebola – shortened the time to recovery in some patients by a third.

The difference in mortality rate was not statistically significant.

Remdesivir, which is administered by injection, was already available to some patients who enrolled in clinical trials around the world.

“The Japanese approval of remdesivir is in recognition of the urgent need to treat critically ill patients in Japan. It is a reflection of the exceptional circumstances of this pandemic,” said Merdad Parsey, chief medical officer at Gilead Sciences.

Remdesivir incorporates itself into the virus’s genome, short-circuiting its replication process.

Gilead said clinical trials are ongoing to evaluate the safety and efficacy of remdesivir for the treatment of COVID-19.

Meanwhile, top government spokesman Yoshihide Suga said the government “aims to approve Avigan this month” if a clinical trial involving 100 patients proves effective. Avigan was developed by Japanese firm Fujifilm Toyama Chemical.

The drug, whose generic name is favipiravir, was approved for use in Japan in 2014 but only in flu outbreaks that are not being effectively addressed by existing medications.

It is not available on the market and can only be manufactured and distributed at the request of the Japanese government.

Favipiravir, which can be taken orally as a pill, works by blocking the ability of a virus to replicate inside a cell. Avigan has been shown in animal studies to affect fetal development, meaning it is not given to pregnant women.  AFP

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