VIENNA-- June 21, 2022 -- AOP Health announced the final results on Ropeginterferon alfa-2b in patients with Polycythaemia Vera (PV) from its CONTINUATION-PV study in an oral presentation at the prestigious EHA (European Hematology Association) 2022 Annual Meeting by Professor Heinz Gisslinger, Medical University of Vienna, Austria [1].

Ropeginterferon alfa-2b is a long-acting, mono-pegylated proline interferon (ATC L03AB15). It is administered once every 2 weeks initially, or up to monthly after stabilization of hematological parameters.

AOP Health has been conducting a pivotal clinical development program, including the studies PEGINVERA, PROUD-PV and CONTINUATION-PV. The latter is an open-label, multicenter, phase IIIb study assessing the long-term efficacy and safety of Ropeginterferon alfa-2b versus hydroxyurea (HU) or best available treatment (BAT) in patients with PV who previously participated in the PROUD-PV study.

The clinical development program conducted by AOP Health in Europe since 2010, led to marketing authorizations of BESREMi® for the treatment of PV, first granted by the European Commission in 2019, thereafter by Switzerland, Liechtenstein, Israel, Taiwan, Korea and most recently by the US FDA in November 2021.

The presentation during the EHA 2022 Annual Meeting focused on patient-relevant outcomes after this long-term (up to 7.5 years) treatment:

Symptoms/Quality of Life: only a minority of patients (15.7%) treated with Ropeginterferon alfa-2b experienced disease related symptoms, and less than 2 out of 10 patients had to undergo phlebotomy to maintain hematocrit levels during their last year of treatment.

Disease modification: Besides that, treatment with Ropeginterferon alfa-2b led to reduction of the disease-causing mutated JAK2 allele burden below 1% in a sizeable proportion of patients (>20%). Most importantly, event-free survival, with events defined as death, thrombosis, or disease progression over the entire 7.5 years treatment period, was significantly better in the Ropeginterferon alfa-2b group with only 5 of 95 patients experiencing an event, whereas in the control group such an event was observed in 12 of 74 patients (p=0.04).

“The results of CONTI-PV after 7.5 years of treatment provide further evidence of the value of BESREMi® for patients suffering from PV. We are very proud that our work not only delivered the first interferon with regulatory approval for any of the Myeloproliferative Neoplasms, but also contributed to a change of treatment paradigm in PV”, says Dr. Christoph Klade, Chief Scientific Officer of AOP Health.

Professor Jean-Jacques Kiladjian from Paris, senior author of the paper adds: “Since its first approval in Europe in 2019, Ropeginterferon alfa-2b has become the first line therapy of choice for many PV patients. The striking JAK2 molecular response and the extremely low rate of disease progression and thrombosis suggest that Ropeginterferon alfa-2b might be the best available treatment option for disease modification, which may translate into improved survival and even the chance to stop treatment for some patients.”

[1] Ropeginterferon alpha-2b achieves patient-specific treatment goals in Polycythaemia Vera: final results from the PROUD-PV/CONTINUATION-PV studies. Heinz Gisslinger, Christoph Klade, Pencho Georgiev, Dorota Krochmalczyk, Liana Gercheva-Kyuchukova, Miklos Egyed, Petr Dulicek, Arpad Illes, Halyna Pylypenko, Lylia Sivcheva, Jiří Mayer, Vera Yablokova, Kurt Krejcy, Victoria Empson, Hans C. Hasselbalch, Robert Kralovics, and Jean-Jacques Kiladjian for the PROUD-PV Study Group, European Hematology Association EHA, 27th Annual Meeting June 2022