Spiro Rombotis
Analyst · Jotin Marango with ROTH Capital
Thank you Alex and thank you everyone for joining us today for our second quarter 2018 business update call. On today's call, we will provide an overview of Cyclacel's clinical programs as well as key anticipated milestones for the remainder of this year. We will then provide highlights for the second quarter 2018. We will begin with an update on our lead program CYC065, a cyclin dependent kinase or CDK inhibitor, of CDK2/9 and remind you of our clinical development strategy for this innovative drug. A little background, the evolution of resistance to available anticancer therapies and/or the addiction of cells to cancer promoting genes or oncogenes are significant challenges in the fight against cancer. In addition to increasing the risk of disease progression and death, these problems represent threats to the investments made by society in funding approved cancer drugs which may be neutralized by resistance mechanisms. In many cancer, resistance correlates with an increase in the expression of pro-survival proteins, such as Bcl-2, Bcl-xL, Mcl-1 and others. These proteins help the cancer cells escape the effects of available therapies and continue to multiply. Cancer cells can also gain an advantage and multiply at the expense of normal cells by becoming addicted to oncogenes, such as MYC and/or cyclin E. At Cyclacel, we are applying our many years of studying cell cycle biology to determine how to disrupt cancer cell resistance and/or break their addiction to oncogenes. To this end, we have developed selective CDK inhibitors such as CYC065 that interfere with transcription of cancer cells in order to suppress Mcl-1 expression with the aim overcoming resistance to Bcl-2 proteins or breaking addiction to oncogenes. CYC065 is designed to disrupt resistance to cancer cells by suppressing Mcl-1. Data presented at the American Association for Cancer Research or AACR 2018 Annual Meeting, from our Phase 1 study highlighted drug's potential by demonstrating durable suppression of Mcl-1 for at least 24 hours after a single dose of CYC065 in 11 out of 13 patients treated at the recommended Phase 2 dose. The clinical findings are supported by preclinical evidence showing that CDK2/9 inhibitors can effectively target cancer cells that have developed resistance following treatments with an approved therapy. Our clinical development strategy is try and overcome this resistance by combining the approved therapy with CYC065. We have initially selected a combination of CYC065 and AbbVie's venetoclax as the first clinical evaluation of this strategy in patients with relapsed or refractory chronic lymphocytic leukemia or CLL. When pseudo-patients progress after front-line therapy, they will often receive venetoclax, a Bcl-2 inhibitor, which however does not suppress Mcl-1. By targeting both Mcl-1 and Bcl-2, the combination of CYC065 and venetoclax may offer a more powerful dual hit alternative to CLL patients in need. This combination study will soon open for enrollment at a premier center of excellence in hematological malignancies in the United States. The product has have been cleared by the scientific review committee and is now pending clearance by the institution's IRB. We are also planning additional studies to evaluate rational combinations of CYC065 in other hematological malignancies such as ALL and AML and in particular, in patients with mixed lineage leukemia rearrangements or MLL-R. Turning to solid tumors. We continue to evaluate CYC065 as monotherapy in part two of the ongoing Phase 1 trial at the Dana-Farber cancer Institute or DFCI in patients with advanced cancers. Part two is evaluating a more intensive schedule of two days per week for two weeks of a three-week cycle. The study will provide important safety and pharmacokinetic and pharmacodynamic data to inform combination trials, including assessment of biomarkers related to the mechanism of action of CYC065, such as those with amplification of Mcl-1, MYC and/or cyclin E. In parallel, we have continued discussions with the principal investigators and cooperative groups with the objective of evaluating 065 in a variety of tumor indications suitable its mechanism of action. Let us now turn to our DNA damage response or DDR program with sapacitabine, our orally available nucleoside analog. In collaboration with DFCI and a pharmaceutical company, we are preparing for a phase 1B/2 clinical study evaluating a combination therapy of sapacitabine and an approved PARP inhibitor in BRCA positive patients with breast cancer. This trial will be an investigator sponsored trial or IST with Cyclacel providing sapacitabine investigational drug. To provide context for this IST, PARP inhibitors administered as single agents are currently approved standard of care for breast and ovarian cancers with homologous recombination deficient or HRD cancers which include those positive for BRCA mutations. Sapacitabine works by an HRD relevant mechanism and has shown promising and durable clinical activity in BRCA mutation positive patients with breast, ovarian and pancreatic cancers. We believe that two therapeutics, administered in combination, could provide additional benefit to these patients for whom limited treatment options exist. We are also pleased to report that CYC140, our in-house discovered polo-like kinase 1 or PLK1 inhibitor has cleared Investigational New Drug or IND review by the FDA. We will be initiating a first-in-human study with this agent during this half. Finally, let's briefly turn to the Phase 3 SEAMLESS study. We have submitted briefing documents and schedule meetings for national scientific advice with certain European Union regulatory authorities with the objective of determining a potential regulatory pathway for sapacitabine in elderly AML. As a reminder, the study did not reach its primary endpoint of improved overall survival. However, an improved higher complete remission rate, a secondary endpoint, was observed. In addition, a large prespecified subgroup with low peripheral white blood cell count demonstrated a trend toward improved overall survival. The opposite was true for the subgroup with high white blood cell count. Cyclacel completed exploratory analyses of further subgroups in SEAMLESS including interaction tests to test the likelihood that subgroup findings are due to chance. Following these analyses, we believe that the subgroup results have defined a patient population for whom the sapacitabine-decitabine alternating regimen may represent an improvement over low intensity treatment by decitabine alone. As we move past the second quarter of 2018, we anticipate opening several clinical studies evaluating CYC065 and CYC140. Before handing the call over to Paul for a review of the financials, let me review key upcoming company goals and milestones for the rest of 2018. We will initiate a Phase 1B clinical trial evaluating CYC065 in combination with venetoclax in patients with relapsed or refractory CLL. We will start enrollment in a Phase 1B/2 IST of sapacitabine and an approved PARP inhibitor combination treatment in patients with BRCA mutant breast cancer. We will initiate CYC065 Phase 1B in advance leukemias. We expect to provide a clinical update from part two of the Phase 1 study evaluating CYC065 monotherapy in patients with advanced cancers. We will conduct EU regulatory authority meetings regarding the SEAMLESS study of sapacitabine in elderly AML. We will initiate a Phase 1 trial evaluating CYC140, a PLK1 inhibitor and will provide a clinical update and complete enrollment of part three of the Phase 1 study of the sapacitabine and seliciclib combination in BRCA positive breast, ovarian and pancreatic cancer patients. I will like to turn the call over to Paul to review our second quarter 2018 financials. Paul?