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Galapagos NV: First patients screened for Phase 2B studies with GLPG0634

MECHELEN, BELGIUM--(Marketwired - Jul 1, 2013) -

* First rheumatoid arthritis patients screened in Belgium

* Galapagos on track with DARWIN Phase 2B program in rheumatoid arthritis

* 875 patients to be enrolled worldwide for 24 weeks of treatment

* Topline 12-week data from DARWIN 1 and DARWIN 2 available by end 2014

Galapagos NV (EURONEXT BRUSSELS: GLPG) announced today that the first rheumatoid arthritis (RA) patients have been screened for enrolment in the Phase 2B clinical program with GLPG0634, a selective JAK1 inhibitor. The DARWIN Phase 2B program includes two dose finding studies and an open label extension study. The dose finding studies will evaluate the efficacy and safety of GLPG0634 with 24 weeks of treatment in 875 moderate to severe RA patients refractory to methotrexate.

GLPG0634 is the first selective JAK1 inhibitor in development for RA. The results of two 4-week Phase 2A clinical studies demonstrated the rapid clinical benefit and favorable safety profile of the drug, and supported the selection of the GLPG0634 doses that will be evaluated in the current Phase 2B program. Galapagos started the 24-week global DARWIN Phase 2B program in RA to identify the dose and dose-regimen that offers optimal efficacy and safety of GLPG0634 in patients with moderate to severe RA. Galapagos expects to report completion of recruitment by mid-2014 and 12-week topline data from the Phase 2B program in Q4 2014.

"GLPG0634 has shown a rapid suppression of disease activity with a good safety profile in the 4-week Phase 2A studies in RA patients. We look forward to seeing the effect of GLPG0634 in a global study, for a longer treatment period, and in a larger and more diverse patient population. The first patients will be recruited in Belgium and New Zealand," said Dr Piet Wigerinck, Chief Scientific Officer of Galapagos. "Galapagos is on track in the RA program and is now also preparing for a Phase 2 study with GLPG0634 in Crohn's disease, which will run in parallel with the Phase 2B study in RA. By early 2014, we will have Phase 2 programs with GLPG0634 in RA and Crohn's, both with final readouts before mid-2015."

Details of the DARWIN Phase 2B program

The Phase 2B program, named DARWIN (Drug Against Rheumatoid Arthritis With Selective JAK1 INhibition) includes 2 dose finding studies, DARWIN 1 and DARWIN 2, and an open label extension study, DARWIN 3. All patients will have received methotrexate (MTX) but no longer have an adequate therapeutic response to this first-line therapy in RA. Patients will not have been exposed to prior biological treatments.