On June 28, 2018 Actinium Pharmaceuticals, Inc. (NYSE AMERICAN:ATNM) ("Actinium" or "the Company"), reported that Dr. Joseph Jurcic, Director of the Hematologic Malignancies Section and Professor of Medicine at Columbia University Medical Center, has initiated Actimab-A MRD, a new clinical trial for patients with AML who are in remission but have detectable minimal residual disease (MRD) (Press release, Actinium Pharmaceuticals, JUN 28, 2018, View Source [SID1234527514]). The trial will study the safety/tolerability of Actimab-A in the postremission consolidation setting and include dose finding analyses. The trial will also study the impact of Actimab-A on minimal residual disease (MRD) as well as progression-free (PFS) and overall survival (OS) rates. The investigational new drug (IND) application for this trial has been cleared by the FDA.

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Together with Dr. Jurcic, Actinium will host a webcast to discuss the planned trial, participation information is as follows:

Date: July 10, 2018
Time: 8:00 AM ET
Registration Link: View Source
Telephone participation: U.S./Canada Toll Free: (855) 427-0225 or (718) 865-8336
Conference ID: 2540

Dr. Joseph Jurcic said, "Although patients with AML can achieve complete remissions with induction therapy, the rate of relapse remains high resulting in high mortality rates. Strong evidence exists that minimal residual disease is a major driver of disease relapse and clearly demonstrates the need for improved consolidation therapies that can effectively target MRD. Based on the clinical profile of Actimab-A to date, I am excited to study this therapy for use as a consolidation therapy. It will be a significant advancement for AML patients if this trial shows the ability to target MRD and reduce relapse rates."

There are an estimated 21,000 patients diagnosed with AML annually in the United States and over 350,000 cases of AML worldwide. According to the National Cancer Institute, 5-year survival for AML patients under age 65 is 45% while 5-year survival for patients over 65 is 6% with the median age of diagnosis of AML patients being 68. With curative intent induction chemotherapy, 45% – 65% of patients can achieve complete remission but up to 80% of patients will relapse despite postremission consolidation treatment. Currently, non-transplant-based consolidation therapies consist mainly of chemotherapy such as high-dose Cytarabine. The presence of MRD has been shown to be associated with higher rates of relapse and earlier relapse in multiple studies. Recently, the FDA approved a therapy for patients with a certain type of B-cell leukemia who are in remission but have detectable MRD.

Dr. Mark Berger, Actinium’s Chief Medical Officer said, "Actimab-A has many points of differentiation that I feel make it well suited to address MRD treatment as consolidation therapy. Given that patients receive chemotherapy as induction therapy, I believe it is important to develop a non-chemotherapy based consolidation therapy that has fewer toxicities and side effects than chemotherapy. This is particularly important for older patients, who do not have the same ability to tolerate high dose therapies as young patients, and who are the majority of patients with AML. We believe our ARC or Antibody Radiation Conjugate approach enables precision targeting of residual AML cells and potentially provide a means by which MRD can be eliminated and relapse rates lowered. We look forward to working with Dr. Jurcic to execute this important trial for AML patients."

Sandesh Seth, Actinium’s Chairman and CEO said, "We are excited by the continued expansion of our CD33 program and intend to solidify our position as the best-in-class CD33 targeting therapy by demonstrating its potential in multiple diseases and multiple indications. Expansion into the consolidation setting is an important achievement towards this end. Further, the application of our therapy for MRD, strategically aligns us with the forefront of scientific exploration in a clinical setting. We believe the breadth of our CD33 program is unmatched given that we are now studying our ARC not only in multiple AML settings including induction, consolidation and in relapsed/refractory disease but also in multiple myeloma as a therapeutic, and in MDS as targeted conditioning to enable a bone marrow transplant. With this important trial poised to start and clinical data expected from our ongoing trials, we are confident in our ability to realize the intrinsic value of this program and advance these trials to benefit the greatest number of patients."

About Actimab-A
Actimab-A is an antibody radio-conjugate (ARC) comprised of the anti-CD33 monoclonal antibody lintuzumab labeled with the radioisotope actinium-225. CD33 is a marker expressed on AML cells of virtually all affected patients. Actimab-A has been studied in over 100 patients to date and is the only CD33 targeting agent being studied in a broad range of diseases in which the CD33 antigen is expressed, including AML, myelodysplastic syndrome (MDS) and multiple myeloma.

Actinium-225 is highly differentiated radioisotope that emits high amounts of energy through the release of four alpha-particles that can cause double-stranded breaks in DNA with known resistance mechanisms to Actinium-225. Given the limited distance of its energy in the body, it is potentially sparing of non-targeted cells leading to better tolerability and less toxicities.

Actimab-A has been granted Orphan Drug Designation from both the U.S. Food and Drug Administration and the European Medicines Agency for newly diagnosed AML in patients age 60 and above.

On June 28, 2018 Corvus Pharmaceuticals, Inc. (NASDAQ:CRVS), a clinical-stage biopharmaceutical company focused on the development and commercialization of precisely targeted oncology therapies, reported publication of results of preclinical studies of CPI-444 conducted by researchers at Johns Hopkins University School of Medicine (Press release, Corvus Pharmaceuticals, JUN 28, 2018, View Source;p=RssLanding&cat=news&id=2356398 [SID1234527496]). The data showed that CPI-444 administered as monotherapy suppressed tumor growth and improved survival in animal tumor models, and CPI-444 administered in combination with anti-PD-1 therapy dramatically improved antitumor immune responses over either agent used alone. The results were published online this month in the journal Cancer Immunology, Immunotherapy (CII), in a publication titled "Inhibition of the adenosine A2a receptor modulates expression of T cell coinhibitory receptors and improves effector function for enhanced checkpoint blockade and ACT (adoptive cellular therapy) in murine cancer models," and can be accessed here.

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CPI-444, Corvus’ lead product candidate, is a selective and potent inhibitor of the adenosine A2A receptor. It is currently being evaluated in early-stage clinical trials in patients with various solid tumors as a single agent and in combination with Genentech’s atezolizumab, an anti-PD-L1 antibody.

"These newly published studies add to the growing scientific and clinical evidence of the importance of the adenosine pathway in modulating immune responses in cancer. The results provide further evidence that the A2A receptor may serve as a crucial regulator of immune response, and confirms the potential of CPI-444 in cancer therapy," said Richard A. Miller, M.D., an oncologist and co-founder, president and chief executive officer of Corvus. "CPI-444 has been studied in more than 250 patients to date both as a monotherapy and in combination with an anti-PD-L1 antibody. To our knowledge, it is the only A2A receptor antagonist to reproducibly show anti-tumor activity as a monotherapy in preclinical and clinical studies. We are currently enrolling patients in a Phase 1/1b trial in renal cell cancer and in a Phase 1b/2 trial in non-small cell lung cancer."

Results of the preclinical studies conducted by researchers at the Sidney Kimmel Comprehensive Cancer Research Center and Bloomberg~Kimmel Institute for Cancer Immunotherapy at Johns Hopkins University School of Medicine, showed that CPI-444:

Administered as monotherapy suppressed tumor growth and improved survival in two animal models of colon tumors — CT26, which is very resistant to checkpoint blockade, and MC38.
Enhanced the efficacy of anti-PD-1 immunotherapy. The combination therapy dramatically improved tumor regression and animal survival in both the CT26 and MC38 colon tumor models. The effect was particularly marked in the CT26 tumor model, which showed a 70 percent cure rate.
Dramatically enhanced immune responses in models of tumor immunity, augmented immune memory responses to viral antigens, and enhanced adoptive cellular therapy (ACT) in an animal model of melanoma.
Suppressed the expression of multiple checkpoint pathways, including PD-1, LAG-3, TIM-3 and CTLA-4, on both CD8 positive and T reg cells (which play an important role in regulating antitumor immune responses). The most significant effects were seen in tumor-draining lymph nodes.
Increased the function of killer T cells (CD8+) in tumor infiltrating cells.
ABOUT CPI-444
CPI-444 is a small molecule, oral, checkpoint inhibitor designed to disable a tumor’s ability to subvert attack by the immune system by blocking the binding of adenosine in the tumor microenvironment to the A2A receptor. Adenosine, a metabolite of ATP (adenosine tri-phosphate), is produced within the tumor microenvironment where it may bind to the adenosine A2A receptor present on immune cells and block their activity. CD39 and CD73 are enzymes on the surface of tumor cells and immune cells. These enzymes work in concert to convert ATP to adenosine. In vitro and preclinical studies have shown that dual blockade of CD73 and the A2A receptor may be synergistic.

On June 28, 2018 Kymab reported its clinical trial agreement with F. Hoffmann-La Roche Ltd under which Roche will provide its PD-L1 blocking antibody atezolizumab for use in combination with Kymab’s lead investigational anti-ICOS antibody therapy KY1044 in Kymab’s upcoming Phase I/II clinical studies in patients with advanced solid cancers (Press release, Kymab, JUN 28, 2018, View Source [SID1234537005]).

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"We have presented preclinical data demonstrating strong synergies between an anti-PD-L1 treatment in combination with KY1044 against multiple tumour types," says Arndt Schottelius, MD, PhD, Executive Vice President, Research and Development of Kymab. "We look forward to the initiation of our first studies and exploration of the potential synergy of our programs for the benefit of patients with advanced solid cancers."

Kymab will be responsible for conducting the clinical trials, and both companies will share data from the trials. Kymab continues to retain all commercial rights to KY1044.

KY1044 is designed to both deplete intratumoral Regulatory T-cells and stimulate T Effector cells to enhance the immune response against tumors.

Kymab plans to conduct a Phase I/II study in a variety of solid tumours both as monotherapy and in combination with atezolizumab. Indications that have elevated levels of both ICOS and FOXP3 might be especially responsive to this combination of checkpoint inhibitors.

Kymab will lead studies to evaluate this hypothesis: atezolizumab, an anti-PD-L1 antibody that acts as a checkpoint inhibitor, and KY1044, an antibody targeting ICOS expression, will be tested for synergistic action to recalibrate the immune response. Kymab plans to initiate monotherapy studies of KY1044 in the first half of 2019 and studies in combination with TECENTRIQ in the second half.

Notes to Editors
Issued Cambridge, UK, 28 June 2018

Read the PDF version of the issued Press Release

TECENTRIQ (atezolizumab) is a registered trademark of Genentech, a member of the Roche Group.

About KY1044
KY1044 is a fully human monoclonal antibody discovered by Kymab’s unique suite of technologies. KY1044 has now been tested in number of highly illustrative syngeneic models, which demonstrate that KY1044 strongly inhibits tumor growth in cancers both as a monotherapy and in combination with other immunotherapies.

Inducible T Cell Co Stimulator (ICOS), is expressed upon activation on T cells and at high levels on the majority of FOXP3+ regulatory CD4+ T cells. Importantly, available data demonstrate that depletion of these immunosuppressive cells from the tumor microenvironment enhances the patient’s anti-tumor immune response.

Scientific Posters and Presentations can be located in the pipeline section on the Company’s website: View Source

On June 28, 2018 Alexion Pharmaceuticals, Inc. (Nasdaq: ALXN) reported that the Company will report its financial results for the second quarter ended June 30, 2018 before the US financial markets open on July 26, 2018 (Press release, Alexion, JUN 28, 2018, View Source [SID1234527498]). Following the release of the financial results, Alexion management will conduct a conference call and audio webcast at 8:00 a.m. Eastern Time (ET).

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To participate in this conference call, dial 866-762-3111 (USA) or 210-874-7712 (International), conference ID 9096048 shortly before 8:00 a.m. ET. The audio webcast can be accessed on the Investor page of View Source and an archived version will be available for a limited time following the presentation.

On June 28, 2018 Cellectar Biosciences, Inc. (Nasdaq: CLRB), a clinical-stage biopharmaceutical company focused on the discovery, development and commercialization of targeted treatments for cancer, reported that the company will expand patient enrollment in the diffuse large b-cell lymphoma (DLBCL) cohort of its currently enrolling Phase 2 clinical trial of CLR 131 (Press release, Cellectar Biosciences, JUN 28, 2018, View Source [SID1234527499]).

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The response rate of the DLBCL cohort exceeded pre-specified criteria. As a result, the company will expand the cohort up to an additional 30 patients. This group represents the second of four cohorts to be expanded in this Phase 2 study. Previously the company announced the expansion of the study’s multiple myeloma (MM) cohort. Additional updates on the two remaining select B-cell lymphoma cohorts will be provided when data are available.

"Relapse or refractory DLBCL is an aggressive cancer and the initial response rates from the cohort leave us optimistic in CLR 131’s potential to have a positive impact on patients with life-threatening hematologic cancers. We continue to see clinical benefit using CLR 131 across a range of cancer types and we look forward to providing future data updates on this indication and others," stated James Caruso, president and chief executive officer of Cellectar Biosciences.

About the Phase 2 Study of CLR 131

The Phase 2 study is being conducted in approximately 10 leading cancer centers in the United States for patients with relapsed or refractory B-cell hematologic cancers. The hematologic cancers being studied include (MM, chronic lymphocytic leukemia/small lymphocytic lymphoma (CLL/SLL), lymphoplasmacytic lymphoma (LPL), marginal zone lymphoma (MZL), mantle cell lymphoma (MCL), and potentially diffuse large B-cell lymphoma (DLBCL).

The study’s primary endpoint is clinical benefit response (CBR), with additional endpoints of progression free survival (PFS), median overall survival (OS) and other markers of efficacy following a single 25.0 mCi/m2 dose of CLR 131, with the option for a second 25.0 mCi/m2 dose approximately 75-180 days later.

In addition to the CLR 131 infusion(s), MM patients will receive 40 mg oral dexamethasone weekly for up to 12 weeks. Efficacy responses will be determined by the latest International Multiple Myeloma Working Group criteria. Efficacy for all lymphoma patients will be determined according to Lugano criteria. Cellectar has been awarded approximately $2 million in a non-dilutive grant from the National Cancer Institute to help fund the trial. More information about the trial, including eligibility requirements, can be found at www.clinicaltrials.gov, reference NCT02952508.

About Diffuse Large B-Cell Lymphoma

According to the Lymphoma Research Foundation, diffuse large B-cell lymphoma (DLBCL) is an aggressive form of non-Hodgkin’s lymphoma (NHL), accounting for about 30 percent of newly diagnosed cases of NHL in the United States.

The American Cancer Society’s most recent estimates for NHL for 2018 project approximately 74,680 people (41,730 males and 32,950 females) will be diagnosed with NHL including both adults and children. They estimate that approximately 19,910 people will die from this cancer (11,510 males and 8,400 females).

DLBCL occurs in both men and women, although it is slightly more common in men. Although DLBCL can occur in childhood, its incidence generally increases with age, and roughly half of patients are over the age of 60.

DLBCL is an aggressive (fast-growing) lymphoma that can arise in lymph nodes or outside of the lymphatic system, in the gastrointestinal tract, testes, thyroid, skin, breast, bone, or brain. Often, the first sign of DLBCL is a painless, rapid swelling in the neck, underarms, or groin that is caused by enlarged lymph nodes. For some patients, the swelling may be painful. Other symptoms may include night sweats, fever, and unexplained weight loss. Patients may notice fatigue, loss of appetite, shortness of breath, or pain.

About Phospholipid Drug Conjugates (PDCs)

Cellectar’s product candidates are built upon a patented delivery and retention platform that utilizes optimized PDCs to target cancer cells. The PDC platform selectively delivers diverse oncologic payloads to cancerous cells and cancer stem cells, including hematologic cancers and solid tumors. This selective delivery allows the payloads’ therapeutic window to be modified, which may maintain or enhance drug potency while reducing the number and severity of adverse events. This platform takes advantage of a metabolic pathway utilized by all tumor cell types in all cell cycle stages. Compared with other targeted delivery platforms, the PDC platform’s mechanism of entry does not rely upon specific cell surface epitopes or antigens. In addition, PDCs can be conjugated to molecules in numerous ways, thereby increasing the types of molecules selectively delivered. Cellectar believes the PDC platform holds potential for the discovery and development of the next generation of cancer-targeting agents.

About CLR 131

CLR 131 is Cellectar’s investigational radioiodinated PDC therapy that exploits the tumor-targeting properties of the company’s proprietary phospholipid ether (PLE) and PLE analogs to selectively deliver radiation to malignant tumor cells, thus minimizing radiation exposure to normal tissues. CLR 131, is in a Phase 2 clinical study in relapsed or refractory (R/R) MM and a range of B-cell malignancies and a Phase 1 clinical study in patients with (R/R) MM exploring fractionated dosing. In 2018 the company plans to initiate a Phase 1 study with CLR 131 in pediatric solid tumors and lymphoma, and a second Phase 1 study in combination with external beam radiation for head and neck cancer.