The company said preliminary 2021 results indicate net product revenue of $429M, a 29% increase from 2020.
Nearly all of that -- $424M -- was due to PTC's Duchenne muscular dystrophy business, Translarna (ataluren) and Emflaza (deflazacort).
Looking ahead to this year, the company says it expects results from a phase 3 study of Translarna are expected in mid 2022 and could support an NDA resubmission. PTC received a complete response letter back in 2017.
PTC is also expecting results by the end of the year for a phase 3 study of PTC923 in patients with PKU.
The company also expects to submit a BLA to the FDA for the gene therapy PTC-AADC in Q2 2022.