There was a statistically significant treatment effect and dose response effect seen in TFJ cartilage thickness.
“Although cartilage thickness declined in all treatment groups between years 2 and 3, the difference in cartilage thickness observed in year 2 with sprifermin at the highest dose [100 mcg every 6 months] versus placebo persisted through year 3,” Dr. Hochberg said at the congress, which was sponsored by the Osteoarthritis Research Society International.
As for secondary endpoints of thickness in the medial and lateral tibiofemoral cartilage, “there are significant differences between the higher-dose sprifermin group and the placebo group,” he said.
“Based on imaging, sprifermin appears to be effective at modifying structural changes in articular cartilage in a dose-dependent manner in patients with knee osteoarthritis, with an acceptable safety profile.”