Shares of Astrazeneca PLC (LON: AZN) slipped around 1% on Friday despite the approval that its Imfinzi drug received from the regulators in Japan.
Imfinzi, the immunotherapy treatment, is one of the best-selling drugs produced by the pharma giant, having generated $954 million in the first half of the year.
“This approval of Imfinzi provides an important new immunotherapy option in Japan for patients with extensive-stage small cell lung cancer,” Dave Fredrickson, AstraZeneca’’s executive VP for oncology said.
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“These patients have an especially poor prognosis, with only two per cent surviving beyond five years. Imfinzi, in combination with chemotherapy, delivers a sustained survival benefit and prolonged treatment response with a convenient dosing regimen given every four weeks during maintenance.”

Results from trials show that Imfinzi and chemotherapy treatment decreased the risk of death by 27% when compared with the chemotherapy treatment alone.