DETAILS OF OPERATIONAL RESULTS
Products in Clinical Development:
• Reported positive topline results from Phase 2 proof-of-concept trial of ARGX-113 in generalized MG. ARGX-113 treatment resulted in a strong clinical improvement over placebo as measured by all four predefined clinical efficacy scales throughout the entire duration of the study. Among ARGX-113 treated patients, 75% had a clinically meaningful and statistically significant improvement for a period of at least six consecutive study weeks versus 25% of patients on placebo. Primary endpoint analysis revealed ARGX-113 to be well-tolerated in all patients and consistent with Phase 1 data.
• Nearing complete enrollment in the Phase 2 clinical trial of ARGX-113 in immune thrombocytopenia (ITP). Amended ITP trial protocol to extend the follow-up period from eight weeks to 21 weeks. In addition, a one-year open label extension study was added as a second amendment to allow (re)treatment of the ITP patients from the first study (dosed at 10 mg/kg).
• Launched Phase 1 trial to evaluate the PK, PD, safety and tolerability of a subcutaneously administered formulation of ARGX-113 in healthy volunteers.
• Provided updates on Phase 1/2 clinical trials of ARGX-110 in AML and CTCL during ASH Annual Meeting.
• Data from the Phase 1/2 clinical trial of ARGX-110 in combination with azacitidine in six newly diagnosed AML patients unfit for intensive chemotherapy showed signs of clinical activity, including complete remission (3/6 patients), complete remission with incomplete blood count recovery (1/6 patients) and partial response (2/6 patients). One of the patients that achieved a complete remission bridged to allogeneic stem cell transplant after five cycles. The preliminary data from the first set of patients suggest ARGX-110 is active both at the circulating and bone marrow blast levels and at the leukemic stem cell level. The data showed a favorable tolerability profile with no exacerbation of azacitidine toxicity.
• Amended Phase 1/2 AML trial protocol to add a 20mg/kg dose cohort to the dose escalation to best inform the recommended dose for a Phase 2 study.
• Data from the Phase 1/2 clinical trial of ARGX-110 in relapsed/refractory CTCL patients. Of the 22 CTCL patients under analysis, we observed one complete response, two partial responses and 10 patients with stable disease. ARGX-110 was observed to have a favorable tolerability profile in these CTCL patients.
• Bird Rock Bio, Inc. (BRB) and argenx have mutually agreed to terminate BRB's license agreement to develop and commercialize ARGX-109 (gerilimzumab). Genor, a sublicensee of Bird Rock Bio, will continue to develop ARGX-109 for the Chinese market.
• Intellectual property portfolio now includes 80 granted and 109 pending patents as of December 31, 2017.
• Company expanded to 95 employees and consultants in support of the growth of the business.
• Established argenx US, Inc., a subsidiary located in Boston, MA.
• Nominated James Michael Daly as a new member of the Board of Directors, subject to approval by the shareholders at the annual general meeting.