On June 9, 2017 XBiotech Inc. (NASDAQ:XBIT) reported that an Independent Data Monitoring Committee (IDMC) has performed its second prospectively planned, unblinded analysis of the Phase 3 XCITE study for the Company’s novel candidate antibody therapy for the treatment of colorectal cancer (Press release, XBiotech, JUN 9, 2017, View Source [SID1234519485]). The IDMC had no safety concerns from the unblinded analysis. However, the committee recommended the early termination of the study since the findings were not sufficient to meet efficacy or the threshold for continuation, which involved a prospectively defined acceptance boundary for the interim analysis of less than or equal to p = 0.08. Schedule your 30 min Free 1stOncology Demo! John Simard, XBiotech President & CEO stated, "We are obviously disappointed with these findings. In the coming weeks, the Company plans to analyze the data extensively to further understand the primary and secondary endpoint data, as well as to identify populations that may have benefited from the therapy. These findings today will not affect our efforts to pursue approval of the therapy based on the successful completion of the European study, which demonstrated control of debilitating symptoms in colorectal cancer."
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Patients enrolled in the XCITE study were randomized 2:1 to receive Xilonix or placebo plus, in each case, best supportive care. Advanced colorectal cancer patients were required to have previous failed regimens that included flouropyrimidines, oxaliplatin, irinotecan, and Cetuximab (or Panitumumab for patients with KRAS mutation). Patients were expected to continue in the study until there was evidence of radiographic progression. The patients were to be followed for up to 18 months in order to determine overall survival. The primary endpoint of this study was overall survival, with secondary endpoints including objective response rate, progression free survival, change in lean body mass and patient reported quality of life measures.
About True Human Therapeutic Antibodies
XBiotech’s True Human antibodies are derived without modification from individuals who possess natural immunity to certain diseases. With discovery and clinical programs across multiple disease areas, XBiotech’s True Human antibodies have the potential to harness the body’s natural immunity to fight disease with increased safety, efficacy and tolerability.