Once spurned, Am­gen wins the FDA over with its bone-build­ing os­teo­poro­sis drug Eveni­ty

As ex­pect­ed, Am­gen’s once-re­ject­ed os­teo­poro­sis drug has scored FDA ap­proval, paving the way for a new bone-build­ing op­tion for the one in two post­menopausal women in the Unit­ed States whose weak­ened bones make them high­ly sus­cep­ti­ble to frac­tur­ing.

Ro­mosozum­ab is to be sold un­der the brand name Eveni­ty. It func­tions pre­dom­i­nant­ly as a bone an­a­bol­ic agent that stim­u­lates bone growth by in­hibit­ing a pro­tein called scle­rostin, which ceas­es the pro­duc­tion of bone and en­hances its break­down. The cur­rent stan­dard of care for the 10 mil­lion Amer­i­cans with os­teo­poro­sis is a fam­i­ly of drugs called bis­pho­s­pho­nates — such as al­en­dronate (orig­i­nal­ly sold un­der the brand name Fos­amax by Mer­ck) — that thwart cells called os­teo­clasts that break down bone tis­sue but do not re­build it.

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