The U.S. Food and Drug Administration approved expanded use of Regeneron Pharmaceuticals Inc. and Sanofi SA’s eczema drug Dupixent to include patients aged between 12 and 17 years.

Sanofi will pay Regeneron about $462 million in a revision of their deal in immuno-oncology, a growing sector in healthcare research which aims to help the body’s own immune system fight cancer.

Drugmakers Sanofi and Regeneron received positive results for Dupixent, which treats eczema and is seen as a key driver of future revenues.

Fears of the demise of blockbuster eye drug Eylea were “greatly exaggerated,” Regeneron Pharmaceuticals Inc.’s chief executive said after the treatment and new eczema drug Dupixent powered the company’s fourth-quarter 2017 results.

On Sept. 11, 2017, Regeneron Pharmaceuticals and Sanofi announced positive data for its Phase III LIBERTY ASTHMA QUEST trial of Dupixent (dupilumab) in asthma. Investors and analysts do not seem to agree on whether dupilumab is on its way to being one of the biggest blockbuster drugs in the last two years, or if it’s the most overhyped drug on the market.

Regeneron Pharmaceuticals Inc.’s second-quarter 2017 profit handsomely beat estimates on strong demand for its flagship Eylea drug.

The number of new drugs approved for sale in United States and Europe has bounced back in 2017, suggesting a marked slowdown in 2016 was an aberration.

Three of Europe’s top drugmakers face critical verdicts from U.S. regulators, with Sanofi and Roche likely to win approvals for two new products while GlaxoSmithKline braces for a potential generic rival.

Novartis is buying privately held drugmaker Ziarco Group for an undisclosed sum to gain access to its investigational eczema medicine.

A Pfizer Inc. ointment to treat mild to moderate cases of the itchy skin condition eczema, or atopic dermatitis, won U.S. approval for use in patients aged 2 years and older, the Food and Drug Administration said.