On April 1, 2019 BerGenBio ASA (OSE:BGBIO) reported that on a top-line, preliminary basis, the first efficacy endpoint has been met in a Phase II clinical trial (BGBC003, NCT02488408) evaluating bemcentinib, a first-in-class selective oral AXL inhibitor, in combination with low-dose cytarabine (LDAC) as a potential new treatment regimen for acute myeloid leukaemia (AML) patients unable to tolerate intensive therapy (Press release, BerGenBio, APR 1, 2019, View Source [SID1234534826]). A second cohort evaluating bemcentinib in combination with decitabine is also ongoing and data is further maturing.

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The pre-specified efficacy endpoint in this trial requires at least three patients out of the first 14 patients (21%) to achieve clinical responses* when treated with the novel drug combination.

The cohort evaluating bemcentinib in combination with LDAC, summarised below, has met its primary endpoint; data is further maturing:

In total, 15 patients were enrolled of which 10 are evaluable for response to date. Among these, 4 were newly diagnosed and 6 relapsed or refractory (R/R).
In newly-diagnosed patients, one complete remission (CR) and one CR with incomplete haematologic recovery(CRi) were observed (2 out of 4) and one CR among R/R patients (1 out of 6), yielding a CR/CRi rate of 30% (3 out of 10).
All responders were above the age of 75, at least one had secondary disease, and two had unfavourable cytogenetic profiles. Responses had an early onset (after 1 to 2 cycles), were durable and deepened over time and the combination of bemcentinib with LDAC was well tolerated causing no overlapping or new toxicities compared to each agent given alone.
An extensive translational programme continues to explore potential biomarkers for bemcentinib combination therapy. Further details will be presented at upcoming medical conferences.

Furthermore, the Company is proceeding with preparations for a late-stage bemcentinib monotherapy trial in AML. The study, expected to start in the second half of 2019, will aim to confirm previously reported monotherapy efficacy of bemcentinib in AML patients whose disease has progressed on standard of care therapy. Correlation with relevant biomarkers will be explored with the ambition to pursue an accelerated development path in a selected patient population.

Professor Dr Dr Sonja Loges, attending physician at the University Hospital Hamburg-Eppendorf and lead investigator of the BGBC003 trial, commented: "Data gathered by our group and others have established AXL as a negative prognostic factor in patients with AML and other malignancies. AXL acts both as a driver of leukaemic cell proliferation and as negative regulator of anti-tumour immunity and therefore represents a novel and promising target in AML. Bemcentinib, an oral tablet, targets AXL selectively and I am pleased to see activity in my patients receiving bemcentinib alone or in combination with standard low-intensity therapies while side effects thus far have proven to be limited and manageable. These early results warrant further investigation of bemcentinib in a larger trial addressing AML patients unfit for intensive chemotherapy."

Richard Godfrey, Chief Executive Officer of BerGenBio, commented: "Clearing the efficacy threshold for bemcentinib in combination with LDAC is very encouraging, particularly as we have seen responses in a less fit AML patient population who are considered to have unfavourable prognosis after the failure of first-line therapies, or those with high risk cytogenetics. AML patients represent a challenging patient population for clinical trials, but we are keen to pursue AML monotherapy as our first indication based on the high unmet need, strength of clinical proof-of-concept with biomarker correlation, excellent safety and potential for a fast and first route to registration. We look forward to providing more details on the trial design upon initiation and reporting further data with bemcentinib combinations in this indication as it matures." *defined as objective response (OR), as measured by the revised recommendations of the International Working Group (IWG) in AML

END

About AML and the BGBC003 trial
AML is the most common form of acute leukaemia in adults where malignant AML blasts interfere with the normal functioning of the bone marrow leading to a multitude of complications like anaemia, infections and bleeding. AML is diagnosed in over 20,000 patients in the US annually and is rapidly lethal if left untreated. Successful treatment typically requires intensive therapy or bone marrow transplantation, and relapse and resistance are common. Consequently, there is an urgent need for effective novel therapies in relapsed/refractory patients, particularly those that are ineligible for intensive therapy or bone marrow transplant.

The BGBC003 trial is a phase Ib/II multi-centre open label study of bemcentinib in combination with cytarabine (part B2) and decitabine (part B3) in patients with AML who are unsuitable for intensive chemotherapy as a result of advanced age or existing-co-morbidities.

For more information please access trial NCT02488408 at www.clinicaltrials.gov.

About AXL
AXL kinase is a cell membrane receptor and an essential mediator of the biological mechanisms underlying life-threatening diseases. In cancer, AXL suppresses the body’s immune response to tumours and drives cancer treatment failure across many indications. AXL inhibitors, therefore, have potential high value at the centre of cancer combination therapy, addressing significant unmet medical needs and multiple high-value market opportunities. Research has also shown that AXL mediates other aggressive diseases.

On April 1, 2019 Thermo Fisher Scientific Inc. (NYSE: TMO), the world leader in serving science, reported that it will release its financial results for the first quarter of 2019 before the market opens on Wednesday, April 24, 2019, and will hold a conference call on the same day at 8:30 a.m. EDT (Press release, Thermo Fisher Scientific, APR 1, 2019, View Source [SID1234534825]).

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During the call, the company will discuss its financial performance, as well as future expectations. To listen, call (877) 273-7122 within the U.S. or (647) 689-5496 outside the U.S. You may also listen to the call live on the "Investors" section of our website, www.thermofisher.com. The earnings press release and related information can be found in that section of our website under "Financial Results." A replay of the call will be available under "Webcasts and Presentations" through Friday, May 10, 2019.

On April 1, 2019 Fate Therapeutics, Inc. (NASDAQ: FATE), a clinical-stage biopharmaceutical company dedicated to the development of programmed cellular immunotherapies for cancer and immune disorders, reported late-breaking preclinical data highlighting the Company’s unmatched ability to mass produce uniformly engineered chimeric antigen receptor (CAR) T cells for off-the-shelf cancer immunotherapy at the American Association of Cancer Research (AACR) (Free AACR Whitepaper) Annual Meeting 2019 in Atlanta, Georgia (LB-073/18: Generation of Novel Single Cell-derived Engineered Master Pluripotent Cell Line as a Renewable Source for Off-the-shelf TCR-less CAR T Cells in support of First-of-kind Clinical Trial) (Press release, Fate Therapeutics, APR 1, 2019, View Source [SID1234534823]).

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The Company’s proprietary approach to CAR T-cell therapy utilizes a one-time genetic modification event followed by high-throughput selection of a single gene-edited induced pluripotent stem cell (iPSC). In contrast to repeatedly engineering large populations of patient- or donor-derived T cells which results in batch-to-batch and cell-to-cell variability, the Company has shown that a single gene-edited iPSC can be maintained as a clonal master engineered iPSC line which can be repeatedly used for production of uniformly engineered CAR T cells.

"The efficiency, accuracy, and uniformity of genetic modifications have the potential to impact the safety and efficacy of CAR T-cell therapy. We know that, when engineering a population of T cells, current gene-editing technologies create genomic heterogeneity and result in undesired byproducts, such as DNA mutagenesis and translocations. The selection of a single gene-edited cell for the derivation of a clonal master engineered iPSC line ensures that the effects of gene editing can be fully characterized and that only engineered T cells meeting rigorous quality standards are administered to patients," said Scott Wolchko, President and Chief Executive Officer of Fate Therapeutics.

New preclinical data presented today at AACR (Free AACR Whitepaper) for FT819, the Company’s universal, off-the-shelf CAR19 T-cell product candidate being developed under a collaboration with Memorial Sloan Kettering Cancer Center (MSK) led by Michel Sadelain, M.D., Ph.D., demonstrate the production of clonal master engineered iPSC lines having complete elimination of T-cell receptor (TCR) expression and insertion of a novel 1XX CAR signaling domain into the T-cell receptor alpha (TRAC) locus. These synthetic features are intended to mitigate the risk of graft-versus-host disease, a severe life-threatening condition that occurs when donor T cells attack a patient’s healthy tissue, and to regulate CAR expression to enhance the therapeutic profile of CAR T cells.

Scientists from the Company and MSK are using clonal master engineered iPSC lines under the collaboration to overcome the complexity, heterogeneity, and substantial costs associated with engineering T cells from a patient or a donor. As proof-of-principle for the therapeutic advantages arising from selecting a single gene-edited cell for the production of CAR T-cell therapy, the scientists engineered a population of 545 cells using CRISPR-directed gene editing and found that only about 5% of cells contained both bi-allelic disruption of the TCR and insertion of the CAR into the TRAC locus. Upon further characterization for off-target genomic modifications and functional performance, only about 2% of the cell population were determined to meet the Company’s standards for genomic integrity and overall quality.

Previously published work by Dr. Sadelain in the journal Nature has shown that directing a CD19-specific CAR to the TRAC locus enhances T-cell potency, and that TRAC-targeted CAR T cells vastly outperform conventionally-generated CAR T cells in a mouse model of acute lymphoblastic leukemia (View Source). Additionally, Dr. Sadelain has shown in published work described in the journal Nature Medicine that the third-generation 1XX CAR signaling domain balances T-cell effector and memory programs, resulting in CAR T cells with potent activity and longer durability (View Source).

Fate Therapeutics has exclusively licensed from MSK foundational intellectual property covering the production and composition of iPSC-derived T cells for human therapeutic use. Additionally, in May 2018, the Company expanded its existing license agreement with MSK to include certain patents and patent applications relating to a novel 1XX CAR construct and off-the-shelf CAR T cells, including the use of CRISPR and other innovative technologies for their production. In addition, Fate Therapeutics owns an extensive intellectual property portfolio that broadly covers compositions and methods for the genome editing of iPSCs using CRISPR and other nucleases, including the use of CRISPR to insert a CAR in the TRAC locus for endogenous transcriptional control.

About Fate Therapeutics’ iPSC Product Platform
The Company’s proprietary induced pluripotent stem cell (iPSC) product platform enables mass production of off-the-shelf, engineered, homogeneous cell products that can be administered in repeat doses to mediate more effective pharmacologic activity, including in combination with cycles of other cancer treatments. Human iPSCs possess the unique dual properties of unlimited self-renewal and differentiation potential into all cell types of the body. The Company’s first-of-kind approach involves engineering human iPSCs in a one-time genetic modification event and selecting a single iPSC for maintenance as a clonal master iPSC line. Analogous to master cell lines used to manufacture biopharmaceutical drug products such as monoclonal antibodies, clonal master iPSC lines are a renewable source for manufacturing cell therapy products which are well-defined and uniform in composition, can be mass produced at significant scale in a cost-effective manner, and can be delivered off-the-shelf to treat many patients. As a result, the Company’s platform is uniquely capable of addressing the limitations associated with the production of cell therapies using patient- or donor-sourced cells, which is logistically complex and expensive and is fraught with batch-to-batch and cell-to-cell variability that can affect safety and efficacy. Fate Therapeutics’ iPSC product platform is supported by an intellectual property portfolio of over 100 issued patents and 100 pending patent applications.

On April 1, 2019 Aptose Biosciences Inc. ("Aptose" or the "Company") (NASDAQ: APTO, TSX: APS), a clinical-stage company developing highly differentiated therapeutics targeting the underlying mechanisms of cancer, reported that new preclinical data for CG-806, its first-in-class, highly potent oral small molecule pan-FLT3/pan-BTK inhibitor, and APTO-253, its MYC inhibitor, are being presented in two separate posters at the 2019 AACR (Free AACR Whitepaper) Annual Meeting in Atlanta, GA (Press release, Aptose Biosciences, APR 1, 2019, View Source [SID1234534822]).

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CG-806 Poster

The poster, CG-806, a pan-FLT3 / pan-BTK inhibitor, demonstrates superior potency against cells from IDH-1 mutant and other non-favorable risk groups of AML patients, explores the activity of CG-806 on primary patient samples with acute myeloid leukemia (AML), in studies that were conducted in collaboration with the Beat AML Initiative. CG-806 demonstrated significant potency across sub-groups of AML cells, including relapsed/refractory AML and those with genetic abnormalities related to poor prognoses in AML patients. CG-806 demonstrated superior potency when compared to other FLT3 inhibitors, including midostaurin, sorafenib, sunitinib, dovitinib, quizartinib, crenolanib and gilteritinib. While patient samples with FLT3-ITD mutations were expected to have greater sensitivity to CG-806, the sensitivity of patient cells with IDH1 R132 mutations was an unexpected finding. In 28-day GLP toxicity and toxicokinetic studies, CG-806 continued to demonstrate a favorable safety profile. The poster also highlights results of combination studies with CG-806 and venetoclax, which demonstrated enhanced killing of primary cancer cells from patients with AML and B-cell cancers.

"With our IND for CG-806 just recently allowed by the FDA, we are eager to begin Phase 1 human clinical trials," said William G. Rice, Ph.D., Chairman, President and Chief Executive Officer. "The Beat AML initiative has allowed us, with our research collaborators at Oregon Health & Science University (OHSU), to test the response of actual patient samples (ex vivo) to CG-806, alone and in combination, and enables us to assess its effectiveness based upon specific genetic profiles of patients. The wealth of CG-806 data continues to grow and strongly supports the clinical development of CG-806. It is our goal to improve the odds of achieving long-term disease remissions for patients."

APTO-253 Poster

The poster, Resistance to APTO-253 caused by internal deletion and alternate promoter usage of the MYC gene in Raji B cells, presents in vitro studies that further define the mechanism of action of APTO-253. A novel small molecule, APTO-253 inhibits expression of the MYC oncogene, leading to apoptosis in human-derived solid tumor and hematologic cancer cells without the myelosuppression seen with other chemotherapies. Researchers found that APTO-253 targets a G-quadruplex motif in the P1/P2 promoter region of the MYC gene and inhibits MYC gene expression to induce apoptosis, resulting in its ability to potently kill hematologic malignant cell lines and primary samples from AML and chronic lymphocytic leukemia (CLL) patients. In this study, researchers performed long-term in vitro studies to determine if and how cells might develop resistance to APTO-253. MYC driven Raji cells required three years in increasing concentrations of APTO-253 in order to adopt multiple modifications and develop high level resistance to APTO-253. These modifications include up-regulation of the ABCG2 transporter, acquisition of a more stable MYC protein lacking the conserved core sequence of MYC Box III generated by deletion of an internal region of the MYC gene exon 2, and utilization of alternate P3 promoter not inhibited by G4 binding and stabilization.

Both of the AACR (Free AACR Whitepaper) posters can be accessed here or at the publications and presentations section of Aptose’s website www.aptose.com.

About CG-806

CG-806 is an oral, first-in-class pan-FLT3/pan-BTK multi-cluster kinase inhibitor and is in a Phase 1 clinical trial for hematologic malignancies. This small molecule, in-licensed from CrystalGenomics Inc. in Seoul, South Korea, demonstrates potent inhibition of wild type and all mutant forms of FLT3 (including internal tandem duplication, or ITD, and mutations of the receptor tyrosine kinase domain and gatekeeper region), cures animals of acute myeloid leukemia (AML) tumors in the absence of toxicity in murine xenograft models, and represents a potential best-in-class therapeutic for patients with AML. Likewise, CG-806 demonstrates potent, non-covalent inhibition of the wild type and Cys481Ser (C481S) mutant forms of the BTK enzyme, as well as other oncogenic kinase pathways operative in B cell malignancies, suggesting CG-806 may be developed for various B cell malignancy patients (including CLL/SLL, FL, MCL, DLBCL and others) that are resistant/refractory/intolerant to covalent BTK inhibitors. Because CG-806 targets key kinases/pathways operative in malignancies derived from the bone marrow, it is in development for B-cell cancers and AML.

About APTO-253

APTO-253 is a clinical-stage, small molecule, targeted therapeutic agent that inhibits expression of the MYC oncogene, leading to cell cycle arrest and programmed cell death (apoptosis) in human-derived solid tumor and hematologic cancer cells. Indeed, the first AML patient treated with APTO-253 at the lowest dose level demonstrated significant reductions of MYC expression in peripheral blood mononuclear cells after one 28-day cycle of drug therapy. The MYC oncogene is overexpressed in hematologic cancers, including acute myeloid leukemia (AML). Aptose researchers have reported the ability of APTO-253 to induce cell death, or apoptosis, in multiple blood cancer cell lines including AML, as well as in vitro synergy with various classes of conventional approved and investigational therapies for AML or myelodysplastic syndromes (MDS). New findings reveal that APTO-253 might also serve certain solid tumor patients with BRCA1/2 mutations, but without causing toxicity to the normal bone marrow functions.

On April 1, 2019 TG Therapeutics, Inc. (NASDAQ: TGTX) reported positive interim data from the ongoing single-arm marginal zone lymphoma (MZL) cohort of its Phase 2b clinical trial known as UNITY-NHL (Press release, TG Therapeutics, APR 1, 2019, View Source [SID1234534821]). The MZL cohort of UNITY-NHL is designed to investigate umbralisib as a single agent in patients with relapsed or refractory MZL. Umbralisib is an investigational, oral, once daily PI3K delta inhibitor with unique inhibition of CK1 epsilon and is currently under development for the treatment of non-Hodgkin lymphoma (NHL) and chronic lymphocytic leukemia (CLL).

The interim data were reported this morning by Dr. Nathan Fowler, Associate Professor of Medicine and Director of Clinical Research in the Department of Lymphoma/Myeloma at the University of Texas MD Anderson Cancer Center and Study Chair of the UNITY-NHL MZL cohort, during this morning’s official 2019 Press Program at the American Association of Cancer Research (AACR) (Free AACR Whitepaper) Annual Meeting. Dr. Fowler will also present the data during an oral session this afternoon (details below).

Summary of Data Presented:

The MZL cohort of UNITY-NHL enrolled patients with relapsed or refractory MZL who had received prior treatment with one or more lines of therapy including at least one anti-CD20 regimen. In August 2018, the trial completed enrollment with 69 treated patients. The interim data reported today included safety and tolerability data on all 69 treated patients (safety population) and efficacy data on 42 patients who were enrolled at least 9 cycles (28 day cycles) prior to the data cut-off date (interim efficacy population). The primary endpoint is overall response rate (ORR) as assessed by IRC using criteria adopted from the International Working Group criteria for malignant lymphoma.

Efficacy

Analysis of the interim efficacy population (n=42) with a median follow-up of 12.5 months showed the following:

Interim Efficacy Population (n=42)
Overall Response Rate by IRC (CR + PR), %
52%
Complete Response by IRC (CR), (%)
19%
Partial Response by IRC (PR), (%)
33%
Median duration of response, months
NR (95% CI: 8.4 – NE)

CI = confidence interval; NR = not reached; NE = not estimable; SD = stable disease

Additional Efficacy Highlights:

● 88% clinical benefit rate by IRC (defined as patients obtaining Complete Response + Partial Response + Stable Disease)

● All patients achieving a Complete Response by IRC remain on study (range: 10.1+ to 15.7+ months)

● 86% of patients had a reduction in tumor burden

● Median time to initial response was 2.7 months

● Kaplan-Meier (KM) estimate of progression-free survival (PFS) at 12 months was 66%, with the median PFS not reached

Safety

Interim safety data were presented for all 69 treated patients with a median duration of exposure of 6.9 months. No unexpected toxicities were observed. The most common adverse events were diarrhea, nausea, and fatigue, with the majority of events Grade 1 in severity. The most frequent grade 3 or higher adverse events were neutropenia, diarrhea and ALT/AST increase, observed in 13%, 10% and 10% of patients, respectively.

A subgroup analysis of patients treated for greater than 6 cycles (n=41) was also conducted to evaluate long-term incidence of key toxicities of interest occurring after 6 cycles of treatment. Median duration of treatment of this subgroup was 10.1 months (range: 5.6 – 19.1 months). In this subgroup, grade 3 or higher adverse events of interest were rare, limited to 2 patients with diarrhea and 1 patient with pneumonitis, with no events of ALT/AST elevation, pneumonia, or colitis.

Key Safety Findings (n=69):

● No events of colitis were reported and only 1 event of Grade 3 pneumonitis was reported

● Grade 3 infections were limited, occurring in 3 patients (bronchitis, pneumonia, and influenza)

● Discontinuations due to umbralisib-related AEs were limited (14%) with no discontinuations after 6 months due to a treatment-related AE

● No deaths occurred on study

Dr. Nathan Fowler, Associate Professor of Medicine and Director of Clinical Research in the Department of Lymphoma/Myeloma at The University of Texas MD Anderson Cancer Center and the Study Chair of the UNITY-NHL MZL cohort, stated, "MZL remains an incurable disease with few treatment options for patients who relapse after first-line chemoimmunotherapy. The exciting results presented today suggest that this oral targeted therapeutic has significant activity against relapsed/refractory marginal zone lymphoma and offers hope for patients." Dr. Fowler continued, "The adverse event and clinical activity data are highly encouraging at this point and we are excited to continue following patients for a longer time. With the results reported thus far, umbralisib has the potential to make a real difference for patients with relapsed/refractory marginal zone lymphoma."

Michael S. Weiss, Executive Chairman and Chief Executive Officer of TG Therapeutics stated, "We are very excited about these interim data and believe the results today demonstrate the activity and differentiated safety and tolerability profile of umbralisib at our Phase 3 dose of 800 mg once per day." Mr. Weiss continued, "As announced previously, the efficacy for the entire population has already reached our target range of 40-50% ORR and we look forward to presenting the final data from the entire MZL cohort later this year when all patients have had the opportunity to be followed for at least 9 cycles. In addition, we look forward to discussing the results with the FDA with a goal of filing for accelerated approval by year end."

CONFERENCE CALL INFORMATION

The Company will host a conference call today, Monday April 1, 2019, at 12:00pm (noon) ET. Michael S. Weiss, Chief Executive Officer of TG Therapeutics, will host the call and Dr. Nathan Fowler, Associate Professor of Medicine and Director of Clinical Research in the Department of Lymphoma/Myeloma at The University of Texas MD Anderson Cancer Center in Houston and Study Chair of the MZL cohort, will review the UNITY-NHL interim MZL data.

In order to participate in the conference call, please call 1-877-407-8029 (U.S.), 1-201-689-8029 (outside the U.S.), Conference Title: TG Therapeutics AACR (Free AACR Whitepaper) Update Call.

A live webcast and accompanying slides will be available on the Events page, located within the Investors & Media section, of the Company’s website at View Source An audio recording of the conference call will also be available for replay at www.tgtherapeutics.com for a period of 30 days after the call.

2019 AACR (Free AACR Whitepaper) ORAL PRESENTATION DETAILS

● Title: Umbralisib monotherapy demonstrates efficacy and safety in patients with relapsed/refractory marginal zone lymphoma: A multicenter, open-label, registration directed Phase II study
o Session Date and Time: Monday April 1, 2019 3:00 PM – 5:00 PM ET
o Presentation Time: 4:20 PM ET
o Session Title: The Next Generation of Clinical Trials in Molecularly-driven Therapy
o Session Location: Marcus Auditorium- Bldg A-GWCC
o Presenter: Nathan Fowler, MD, Associate Professor, Department of Lymphoma/Myeloma, The University of Texas MD Anderson Cancer Center, Houston, TX
o Abstract Number: 7821

The full text of the abstract is now available and can be accessed via the AACR (Free AACR Whitepaper) meeting website at www.aacr.org. The slides to be presented in this afternoon’s oral presentation are available on the Company’s corporate website at www.tgtherapeutics.com/publications.cfm.

ABOUT THE UNITY-NHL PHASE 2b STUDY—Marginal Zone Lymphoma Cohort

The multicenter, open-label, UNITY-NHL Phase 2b study – Marginal Zone Lymphoma cohort was designed to evaluate the safety and efficacy of single agent umbralisib, in patients with MZL who have received at least one prior anti-CD20 regimen. The primary endpoint is overall response rate (ORR) as determined by central Independent Review Committee (IRC) assessment.

The MZL cohort completed enrollment in August 2018 with a total of 69 patients enrolled and receiving at least one dose of umbralisib. In February of 2019, the Company announced that the MZL cohort met its primary endpoint of ORR as determined by central IRC for all treated patients (n=69). While the study has already met the Company’s target guidance of 40-50% ORR, the final analysis of ORR will be conducted when all treated patients have had at least 9 cycles (cycle = 28 days) of follow-up. Secondary endpoints include safety, duration of response, and progression-free survival (PFS).

ABOUT BREAKTHROUGH THERAPY DESIGNATION

The Company announced in January of 2019 that the U. S. Food and Drug Administration (FDA) granted Breakthrough Therapy Designation for umbralisib for the treatment of adult patients with marginal zone lymphoma who have received at least one prior anti-CD20 regimen.

The FDA’s Breakthrough Therapy designation is intended to expedite the development and review of a drug candidate that is planned to treat a serious or life-threatening disease or condition and preliminary clinical evidence indicates that the drug may demonstrate substantial improvement on one or more clinically significant endpoints over available therapies.

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