ZURICH, Sept 8 (Reuters) – Swiss drugmaker Novartis on Tuesday said a late-stage study ‌assessing drug del-desiran’s impact on myotonic dystrophy, ‌a form of muscle wasting, had not met its ​target on a key metric, but reaffirmed its sales guidance through 2030.

Novartis said in a statement that the Phase III HARBOR ‌study “did not demonstrate ⁠statistically significant improvement versus placebo on the primary endpoint of video hand ⁠opening time”, a measure of hand myotonia.

Shreeram Aradhye, President of Development and Chief Medical ​Officer at ​Novartis, said that ​developing therapies for ‌a disease like myotonic dystrophy type 1 remains challenging, and that setbacks are part of scientific progress.

The company’s announcement came a day after shares in Novartis fell by more ‌than 3% on news ​that its cholesterol drug ​failed in a ​closely watched study, dealing a ‌blow to what investors ​had seen as ​a blockbuster treatment.

Novartis said it was sticking to its guidance that sales would ​grow at ‌a compound annual rate of 5-6% ​from 2025 to 2030.

(Writing by Dave ​GrahamEditing by Ludwig Burger)