John Scarlett
Analyst · Chad Messer with Needham. Your line is open
Thanks, Olivia, good afternoon everyone and thanks for joining. I’ll begin with comments on the two large global imetelstat clinical studies that are being conducted by Janssen; the first study referred to as IMbark is a Phase 2 clinical trial in approximately 200 patients with the intermediate two and high risk mylofibrosis or MF, who are relapsed after or are refractory to treatment with one or more JAK-inhibitor's. The first patient in this study was dosed in September 2015. In the IMbark study, patients are initially assigned to receive one of two dozen regimens either 9.4 milligrams per kilogram or 4.7 milligrams per kilogram administered every three weeks. An internal review is planned by Janssen after approximately 20 patients in each of these two dozen arms has been followed for at least 12 weeks, in order to assess the initial safety and efficacy of each of the dosing arms. Based on current enrollment projections, we continue to expect Janssen to conduct its internal data review in the second half of 2016. During this internal review, patient enrollment will continue. Potential outcomes from this internal review include the following; if both doses show adequate activity and an acceptable safety profile, we expect Janssen to continue with enrollment in both arms until approximately 100 patients per dosing arm have been enrolled. If one of the doses does not show adequate activity or have acceptable safety, we expect that Janssen may stop enrollment in that arm. In the event that both arms do not have adequate activity or acceptable safety, we expect Janssen may select an alternative dose based on exposure response, efficacy and safety analysis. There are no pre-determined study stopping rules in the protocol based on the results from this internal review. However, one or more findings related to safety or lack of efficacy could result in stopping of the study. As a reminder, I note that the co-primary efficacy endpoints in this study are spleen response rate and symptom response rate. These rates are calculated based on the proportion of patients who achieve a greater than or equal to 35% reduction in spleen volume and a greater than 50% reduction in total symptom score at the week 24 visit. Given the internal reviews occurring after only a total of 40 patients have been treated for 12 weeks, this is such an early look at the preliminary data in the IMbark trial, there are no plans to publicly disclose the results of this internal review. However, we will disclose any significant change to the design in the study. After approximately 200 patients have been enrolled in either completed 24 weeks of treatment or dropped out prior to the 24 week visit in the IMbark study, we expect Janssen to perform a data cut in the second half of 2017, and thereafter to initiate the protocol specified primary analysis. The time for this primary analysis may vary based on numerous factors including the pace of patient enrollment in the study. Following completion of the protocol specified primary analysis of IMbark, Janssen must provide a decision whether they want to maintain their license rights under the collaboration agreement and continued development of imetelstat. The second study being conducted by Janssen referred to as IMerge is a Phase 2/3 clinical trial in approximately 200 patients with low and intermediate-1 risk myelodysplastic syndromes or MDS, who are relapsed after or are refractory treatment with an erythropoiesis stimulating agent or ESA. The first patient was dosed in January of this year. We expect the open label Phase 2 data from up to 30 patients in part one of IMerge will be available in the second half of 2016 for Janssen to conduct an internal review. During this internal review, no new patients will be enrolled into the study. The data from this internal review must support a positive assessment of the benefit risk profile of imetelstat in this patient population before proceeding to part two of the study, which would be a Phase 3 randomized placebo-controlled trial. The timing for this internal review is based on current enrollment projections for IMerge and as is the case for the internal review of the IMbark study, there are no plans to publicly disclose these preliminary data from the internal review. However, we will disclose if the study proceeds to part two with dosing of the first patient or any significant changes to study design. Janssen has reported to us that enrollment in both IMbark and IMerge continue to be on track. As of late April, a total of more than 110 sites are active cross multiple countries and continents in the two studies. We’re very encouraged by the caliber of investigators participating in the studies and feedback from them has been positive. Next, I’d like to acknowledge several recent imetelstat publications and scientific presentations. In March, clinical data were pre-published online in the Blood Cancer Journal that describes safety and efficacy results from patients with type of MDS, known as refractory anemia with ringed sideroblasts or MDS-RARS. And these were patients who were enrolled and treated with imetelstat, as part of the Mayo Clinic pilot study. These data were previously presented last December at the American Society of Hematology 2015 annual meeting and included nine patients enrolled in the study cohort, classified as having either by IPSS intermediate-1 or intermediate-2 risk disease. Six of nine or 67% of patients had prior treatment with ESA's. Three of the eight or 38% of the patients who were dependent on red blood cell transfusions at the study entry became transfusion independent, defined as not requiring transfusions release date weeks. The median duration of transfusion independence was 28 weeks. In April of this year, at the annual meeting of the American Association for Cancer Research or AACR there were two poster presentations describing imetelstat nonclinical data authored by Janssen scientists and academic collaborators. The first poster presentation reported positive results from in vitro imetelstat treatment of cell lines taken from patients with acute myeloid leukemia or AML, in combination with hypomethylating agents that are currently used for the treatment of AML. Previously presented data of mouse xenografts in human AML treated with imetelstat in combination with the chemotherapeutic agent showed similar results. These two studies together extend the rationale for the potential use of imetelstat in additional hematologic myeloid malignancies, such AML. The second poster presentation authored by one of the investigators of the completed ET study, together with Janssen scientists, described results from non-clinical studies that provide further evidence that imetelstat potential on-target mechanism of telomerase inhibition underlies the reduction in platelets observed in previously conducted imetelstat clinical trials. The non-clinical in translational research studies represented by these poster presentations at AACR highlight the wide-ranging work Janssen is conducting on behalf of imetelstat. We’re pleased of the level of commitments that Janssen has demonstrated imetelstat across all aspects of our collaboration. Before I close my prepared remarks, I'd like to provide a brief status update on our business development activities. As we've indicated since announcing our collaboration with Janssen, we’ve conducted a rigorous and comprehensive process to identify and evaluate the potential acquisition of new oncology products, programs or companies that we believe could potentially diversify our business, as well as to leverage the potential cash stream that could come from the successful development and commercialization of imetelstat. An ideal acquisition candidate would be a company that would possess either a platform technology or capability with outstanding signs behind it, which could be used to develop a pipeline of preclinical or early clinical stage products that we believe could improve shareholder value on a risk adjusted basis. We continue to conduct such a search and evaluation process, but are uncertain as to whether we will be able to identify and make such an acquisition. Well, thank you all for listening. I'd be pleased to answer questions in the time we have remaining. So with that operator, please open the call to questions.