On November 16, 2018 Mesoblast Limited (ASX:MSB; Nasdaq:MESO) reported strong financial results and provided operational highlights for the first quarter ended September 30, 2018 (Press release, Mesoblast, NOV 16, 2018, View Source;item=o8hHt16027g9XhJTr8+weNRYaV9bFc2rMd0Q/AXw4zsnDXGHIhg1Zo6OdZ/mQ8xDmNwG+8nCjWUi3+8AQHHPCXcVikgZW6js6ORaqvd2+bjcttGnteaZ9Jpj4yScdpgCNFAltwkTyd4RE/yXEZRb1w==&cb=636779123550696247 [SID1234531524]).

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Key financial results for the three months ended September 30, 2018 (first quarter FY2019)
• Significant increase in revenues to US$11.6 million in the first quarter FY2019, compared with US$1.2 million in the first quarter FY2018
• 66% increase in commercialization revenue from royalty income on sales of TEMCELL1 HS. Inj. for the quarter, compared with first quarter FY2018
• Reduction in operating cash outflows in first quarter FY2019 of US$0.8 million (4%) compared with first quarter FY2018
• Loss after tax increased by $12.5 million compared to the first quarter FY2018, $10.1 million of which is due to non-cash remeasurement of contingent consideration in the comparative quarter
• Pro-forma cash on September 30, 2018 was US$95.1 million including:
o US$55.1 million balance sheet cash, and
o US$40.0 million from Tasly Pharmaceutical Group (Tasly) received in October 2018 in relation to the strategic cardiovascular partnership in China announced in July 2018
• An additional US$50.0 million may be available under existing arrangements with Hercules Capital and NovaQuest, subject to achievement of certain milestones.

Corporate Highlights
• Results of a 159-patient randomized placebo-controlled Phase 2 trial, sponsored and conducted by United States National Institutes of Health (NIH), evaluating MPC-150-IM in the treatment of end-stage heart failure patients implanted with a left ventricular assist device (LVAD) were presented at the 2018 American Heart Association Scientific Sessions.
• The trial succeeded in achieving the clinically meaningful outcome of reduction in gastrointestinal (GI) bleeding and related hospitalizations
• Results confirm the previous pilot trial, which also demonstrated significant reduction in GI bleeding and related hospitalizations in MPC-150-IM treated LVAD patients
• Pilot trial results formed the basis for the FDA Regenerative Medicine Advanced Therapy (RMAT) designation granted in December 2017
• The RMAT designation under the 21st Century Cures Act aims to expedite the development of regenerative medicine therapies intended for the treatment of serious diseases and lifethreatening conditions
• Company intends to meet with the FDA in 1H CY2019 to provide full study data and discuss pathway to potential Biologics License Application (BLA) filing using reduction in GI bleeding and related hospitalizations as an approvable regulatory endpoint
• While the trial did not meet the overall primary endpoint of temporary weaning, MPC-150- IM treatment did significantly improve weaning in the 44% of patients with chr
• Mesoblast’s Phase 3 trial of its product candidate remestemcel-L in children with steroidrefractory acute Graft Versus Host Disease (aGVHD) demonstrated strong survival outcomes through Day 180. Mesoblast is preparing for a pre-BLA meeting to initiate filing of a marketing authorization for this product candidate in the United States.
• Mesoblast expanded its partnership with JCR Pharmaceuticals Co. Ltd. (JCR) for the treatment of wound healing in epidermolysis bullosa (EB). Having been granted Orphan Regenerative Medical Product designation for EB in October, JCR now intends to seek a label extension for TEMCELL in Japan for EB beyond its existing approval for the treatment of aGVHD.
• Mesoblast completed its transaction with Tasly to establish a strategic cardiovascular partnership in China. In addition to US$40 million received on closing the transaction, Mesoblast is eligible to receive up to US$25 million on product regulatory approval in China, double-digit escalating royalties on net product sales as well as six escalating milestone
payments upon the achievement of certain product sales thresholds in China.

Operational Highlights and Anticipated Upcoming Milestones
MPC-150-IM for Moderate to Advanced Heart Failure:
• The ongoing Phase 3 trial received a recommendation in October 2018 from the unblinded Independent Data Monitoring Committee to continue without modification after an evaluation of clinical safety data in the first 526 randomized patients. MSC-100-IV (remestemcel-L) for pediatric steroid-refractory acute Graft Versus Host Disease
(aGVHD):
• Mesoblast will seek a pre-BLA meeting to initiate filing of a marketing authorization for remestemcel-L in the United States, where there are currently no approved therapies for aGVHD.
• An existing Fast Track designation from the FDA allows eligibility for priority review and a rolling BLA review process.
MPC-06-ID for Chronic Low Back Pain:
• Mesoblast’s Phase 3 trial in patients with chronic low back pain who have failed conservative therapy completed enrollment in March 2018, with a total of 404 patients across 48 sites being followed out for evaluation of treatment-related improvement in pain and function.
Financial Results for the Three Months Ended September 30, 2018 (first quarter FY2019) (in U.S. Dollars)
• Revenues were US$11.6 million for the first quarter FY2019, compared with US$1.2 million for the first quarter FY2018, an increase of US$10.5 million. These revenues primarily consisted of:
o US$1.5 million in royalties and milestones from sales of TEMCELL by our licensee in Japan, JCR Pharmaceuticals Co. Ltd. Royalties from TEMCELL increased by 66% for first quarter FY2019 compared with the first quarter FY2018
o US$10.0 million milestone revenue in relation to establishing a strategic cardiovascular
partnership with Tasly in China
• Research and Development expenses were US$18.5 million for the first quarter FY2019, compared with US$15.4 million for the first quarter FY2018, an increase of US$3.1 million (20%) as the Company invested in its Tier 1 clinical programs
• Manufacturing expenses were US$4.3 million for the first quarter FY2019, compared with US$0.9 million for the first quarter FY2018, an increase of US$3.4 million due to an increase in manufacturing activities in preparation for filing the Biologics License Application (BLA) for MSC100-IV
• Management and Administration expenses were US$5.6 million for the first quarter FY2019, compared with US$5.0 million for the first quarter FY2018, an increase of US$0.6 million (12%) primarily due to increased legal and professional fees associated with establishing the strategic cardiovascular partnership with Tasly
• Finance Costs of US$2.6 million in interest expenses were recognized in first quarter FY2019 in relation to loan and security agreements entered into with Hercules Capital in March 2018 and NovaQuest Capital in June 2018. No interest expense was recognized in the first quarter FY2018

Additional components of loss after income tax also include movements in other items which did not impact current cash reserves, such as: fair value remeasurement of contingent consideration, and foreign exchange movements within other operating income and expenses.

A non-cash income tax benefit of US$0.7 million was recognized in the first quarter FY2019 in relation to the net change in deferred tax assets and liabilities recognized on the balance sheet during the period. On December 22, 2017, the United States signed into law the Tax Cuts and Jobs Act (the Tax Act), which changed many aspects of United States corporate income taxation, including a reduction in the corporate income tax rate from 35% to 21%. In the first quarter FY2018 deferred tax assets in the United States were recognized at 35% compared with 21% in the first quarter FY2019.

A non-cash income tax benefit of US$2.9 million was recognized in first quarter FY2018 in relation to the net change in deferred tax assets and liabilities recognized on the balance sheet during the period.

The net loss attributable to ordinary shareholders was US$19.5 million, or 4.07 cents loss per share, for the first quarter FY2019, compared with US$7.0 million, or 1.58 cents loss per share, for the first quarter FY2018.
1TEMCELL HS Inj. is a registered trademark of JCR Pharmaceuticals Co. Ltd.
Conference Call Details
There will be a webcast today on the financial results beginning at 4.30pm on Thursday, November
15, 2018 EST; 8:30 am on Friday, November 16, 2018 AEDT.
The live webcast can be accessed via
View Source
To access the call only, dial 1 855 881 1339 (U.S.), 1 800 558 698 (toll-free Australia) or +61 2 9007
3187 (outside of the U.S. and Australia). The conference identification code is 667811.
The archived webcast will be available on the Investor page of the Company’s website:
www.mesoblast.com

On November 15, 2018 Blueprint Medicines Corporation (NASDAQ: BPMC), a leader in discovering and developing targeted kinase medicines for patients with genomically defined diseases, reported updated data for the registration-enabling NAVIGATOR clinical trial of avapritinib, a potent and highly selective KIT and PDGFRA inhibitor in development for patients with advanced gastrointestinal tumors (GIST) (Press release, Blueprint Medicines, NOV 15, 2018, View Source [SID1234531353]). The data showed that avapritinib was highly active across all lines of therapy for patients with PDGFRα D842V-driven GIST and in second-, third- and fourth-line for other GIST patients. In addition, avapritinib was well-tolerated with most adverse events (AEs) reported by investigators as Grade 1 or 2. These results will be presented today in an oral presentation at the Connective Tissue Oncology Society 2018 Annual Meeting in Rome, Italy.

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The updated data from the ongoing Phase 1 NAVIGATOR trial support Blueprint Medicines’ plans to submit a New Drug Application (NDA) in the first half of 2019 to the U.S. Food and Drug Administration (FDA) for the treatment of PDGFRA Exon 18 mutant GIST, which primarily includes patients with the D842V mutation, and fourth-line GIST. There are currently no approved or effective therapies in these patient populations. In patients with PDGFRα D842V-driven GIST, avapritinib demonstrated an objective response rate (ORR) of 84 percent and a 12-month duration of response (DoR) of 76 percent. In heavily pre-treated patients with fourth-line or later GIST, avapritinib demonstrated an ORR of 20 percent, tumor reductions in 60 percent of patients and a median DoR of 7.3 months. ORR and DoR per central radiographic review will be the primary endpoints for the NDA submission, consistent with regulatory precedent for accelerated approvals based on single-arm oncology studies. In addition, avapritinib demonstrated an ORR of 26 percent in regorafenib-naïve third- and fourth-line GIST and an ORR of 25 percent in second-line GIST. Patients with PDGFRα D842V-driven GIST were excluded from both of these populations.

"With an increased understanding of molecular drivers of GIST over the last decade, it is encouraging to see an investigational drug, like avapritinib, bring a precision therapy approach to GIST," said Michael Heinrich, M.D., Professor of Medicine at Oregon Health & Science University and an investigator on the NAVIGATOR trial. "Avapritinib has the potential to be a significant therapeutic advance in GIST, a rare cancer with high medical needs across lines of treatment. In particular, the updated data demonstrate the broad clinical impact of avapritinib for patients with PDGFRα D842V-driven GIST and fourth-line GIST, where there are currently no effective therapies. In addition, the data strongly support clinical development of avapritinib in early lines, including second- and third-line treatment."

"These data highlight the potential of avapritinib, a potent and highly selective inhibitor of KIT and PDGFRA mutant kinases, to be a cornerstone precision therapy in GIST," said Andy Boral, M.D., Ph.D., Chief Medical Officer of Blueprint Medicines. "The results validate Blueprint Medicines’ approach to designing precision therapies that specifically target genetic drivers of disease, with the goals of delivering transformative benefit to patients and enabling rapid progress toward registration. Avapritinib’s highly potent anti-tumor activity in PDGFRα D842V-driven GIST, combined with differentiated activity across treatment lines in KIT-driven GIST, reflect its promise as a potentially foundational treatment option across multiple GIST populations. We are committed to advancing a comprehensive and scientifically driven clinical development program with the goal of improving the lives of GIST patients."

Data Highlights from the Ongoing Phase 1 NAVIGATOR Clinical Trial

As of the data cutoff date of October 15, 2018, 231 patients were treated with avapritinib in the dose escalation and expansion portions of the Phase 1 clinical trial at eight dose levels, ranging from 30 mg once daily (QD) to 600 mg QD. This population consisted of 167 patients with KIT-driven GIST, 56 patients with PDGFRα D842V-driven GIST and eight patients with other PDGFRA mutations. Patients in the expansion portion of the clinical trial were treated at the recommended Phase 2 dose of 300 mg QD.

Safety Data

As of the data cutoff date, avapritinib was well-tolerated, and most AEs reported by investigators were Grade 1 or 2. Across all doses, 20 patients (8.7 percent) discontinued treatment with avapritinib due to treatment-related AEs.

Across all grades, the most common treatment-emergent AEs (regardless of relationship to avapritinib) reported by investigators (≥20 percent) included nausea (61 percent), fatigue (55 percent), anemia (46 percent), periorbital edema (40 percent), diarrhea (39 percent), vomiting (38 percent), decreased appetite (35 percent), peripheral edema (33 percent), increased lacrimation (31 percent), memory impairment (26 percent), constipation (23 percent), face edema (23 percent), hair color changes (21 percent) and dizziness (20 percent).

Investigator-reported Grade 3 or 4 treatment-related AEs (≥2 percent) included anemia, fatigue, hypophosphatemia, increased bilirubin, decreased white blood count/neutropenia and diarrhea.

Clinical Activity Data

As of the data cutoff date, the following patients were evaluable for response assessments: 56 patients with PDGFRα D842V-driven GIST, 109 patients with fourth-line or later GIST, 23 patients with third- or fourth-line GIST who did not receive prior regorafenib (which is comparable to the VOYAGER trial population) and do not harbor the PDGFRα D842V mutation, and 20 patients with second-line GIST who do not harbor the PDGFRα D842V mutation. Patients were evaluable if they had at least one centrally reviewed radiographic scan, and data are based on modified Response Evaluation Criteria in Solid Tumors version 1.1 (mRECIST 1.1 criteria) for GIST.

Across multiple lines of therapy, avapritinib demonstrated important clinical activity in patients with PDGFRA- and KIT-driven GIST.

GIST Population

Evaluable
Patients

ORR

Clinical Benefit Rate
at Four Months
(≥Two Scans)

Median DoR

Median PFS

Central Review
(Investigator Review)

PDGFRα D842Va

56

84%f

96%

Not estimable;
76% at 12 months

Not reached

Fourth-line or laterb,c

109

20%g

40%

7.3 months

3.7 months
(5.4 months)

Regorafenib-naïve third-
or fourth-lineb,d

23

26%

70%

10.2 months

8.6 months
(10.2 months)

Second-lined,e

20

25%h

NRi

NRi

NRi

Notes: (a) Treated at all doses; (b) Treated at doses of 300 or 400 mg QD; (c) Included patients with the PDGFRα D842V mutation, whose proportion was consistent with the known mutational prevalence in this GIST population; (d) Did not include patients with the PDGFRα D842V mutation, whose proportion was greater than the known mutational prevalence in this GIST population; (e) Treated at doses up to and including 300 or 400 mg QD; (f) Four PR pending confirmation; (g) One PR pending confirmation; (h) Three PR pending confirmation; (i) NR, not reported, as data are too early to estimate.

Additional Data Support Clinical Development Strategy in Earlier Lines of Therapy

Third- and Fourth-Line GIST

Preliminary data showed robust clinical activity in regorafenib-naïve third- and fourth-line GIST patients lacking the PDGFRα D842V mutation. As of the data cutoff date, the ORR was 26 percent, tumor reductions were demonstrated in 78 percent of patients, and the median PFS was 8.6 months per central radiographic review and 10.2 months per investigator review. In contrast, historical data showed a 5 percent ORR and a median PFS of 4.8 months for regorafenib, the current standard-of-care treatment in third-line GIST.

In regorafenib-naive patients with PDGFRα D842V-driven third- or fourth-line GIST, the ORR was 80 percent (eight out of 10 evaluable patients, with one response pending confirmation). Blueprint Medicines’ ongoing Phase 3 VOYAGER trial of avapritinib versus regorafenib in third- or fourth-line GIST permits enrollment of patients with both KIT- and PDGFRA-driven GIST, including patients with the PDGFRα D842V mutation. Blueprint Medicines anticipates completing enrollment of the VOYAGER trial in the second half of 2019.

Second-Line GIST

Preliminary data showed a 25 percent ORR in second-line GIST, excluding patients with the PDGFRα D842V mutation. In patients with second-line PDGFRα D842V-driven GIST, the ORR was 94 percent (15 out of 16 evaluable patients, with two responses pending confirmation).

In addition, analyses of circulating tumor DNA (ctDNA) from the NAVIGATOR trial across all lines showed increased activity for avapritinib in patients without the secondary KIT V654A or T670I mutations, which are estimated to occur in about 20 to 25 percent of GIST patients following treatment with imatinib (second-line or later). Independently published data for sunitinib, the current standard of care therapy for second-line GIST, have shown activity against these mutations.

Based on the totality of data, Blueprint Medicines believes a precision medicine approach has the potential to optimize patient outcomes in second-line GIST. The company plans to initiate the registration-enabling Phase 3 COMPASS-2L clinical trial in the second half of 2019 using a ctDNA-guided patient selection strategy. The planned trial will select patients with PDGFRA- and KIT-driven second-line GIST who do not have the KIT V654A or T670I mutations, and randomize them to receive avapritinib or sunitinib with an anticipated primary endpoint of PFS.

Conference Call Information

Blueprint Medicines will host a live conference call and webcast on November 15, 2018 at 7:30 a.m. ET to review the updated data for avapritinib in GIST. The conference call may be accessed by dialing (855) 728-4793 (domestic) or (503) 343-6666 (international) and referring to conference ID 3479587. A live webcast of the conference call will be available under "Events and Presentations" in the Investors section of Blueprint Medicines’ website at View Source The archived webcast will be available on Blueprint Medicines’ website approximately two hours after the conference call and will be available for 30 days following the call.

About the Avapritinib Clinical Development Program in GIST

Blueprint Medicines is pursuing a broad clinical development program for avapritinib across all lines of GIST. Avapritinib is currently being evaluated in two ongoing registration-enabling clinical trials for GIST: the Phase 1 NAVIGATOR trial and the Phase 3 VOYAGER trial.

The NAVIGATOR trial is designed to evaluate the safety and tolerability of avapritinib in patients with advanced GIST. The trial consists of two parts, a dose escalation portion and an expansion portion. The dose escalation portion is complete, and trial objectives include assessing response, pharmacokinetics and pharmacodynamic measures. Response assessments use blinded, central radiology review. The expansion cohorts of the trial are designed to enroll a total of approximately 200 patients at multiple sites in the United States, United Kingdom and European Union.

The VOYAGER trial is a global, open-label, randomized, Phase 3 trial designed to evaluate the safety and efficacy of avapritinib versus regorafenib in patients with third- or fourth-line advanced GIST. The trial is designed to enroll approximately 460 patients randomized 1:1 to receive either avapritinib or regorafenib at multiple sites in the United States, United Kingdom, European Union, Australia and Asia.

In the second half of 2019, Blueprint Medicines plans to initiate COMPASS-2L, a global, randomized, Phase 3 precision medicine trial. The trial will evaluate the safety and efficacy of avapritinib versus sunitinib in patients with second-line advanced GIST and pre-specified disease genotypes.

Patients and physicians interested in the Phase 3 VOYAGER trial can contact the Blueprint Medicines study director at [email protected] or 1-617-714-6707. For more information about the VOYAGER trial, please visit www.voyagertrial.com. Additional details are available on www.clinicaltrials.gov (ClinicalTrials.gov Identifier: NCT03465722).

About GIST

GIST is a sarcoma, or tumor of bone or connective tissue, of the gastrointestinal (GI) tract. Tumors arise from cells in the wall of the GI tract and occur most often in the stomach or small intestine. Most patients are diagnosed between the ages of 50 to 80, and diagnosis is typically triggered by GI bleeding, incidental findings during surgery or imaging and, in rare cases, tumor rupture or GI obstruction.

Most GIST cases are caused by a spectrum of clinically relevant mutations that force the KIT or PDGFRA protein kinases into an increasingly active state. Because currently available therapies only bind to the inactive protein conformations, certain primary and secondary mutations typically lead to treatment resistance and disease progression.

Treatment options for KIT-driven GIST patients whose disease progresses or develops resistance are currently limited. There are no effective treatment options for patients with PDGFRA-driven GIST, and progression often occurs in as little as three months with available therapies. In advanced GIST, clinical benefits from existing treatments can vary by mutation type. Early testing is critical to help guide therapy that effectively treats the underlying driver of disease and is recommended in expert guidelines.

About Avapritinib

Avapritinib is a potent and selective oral inhibitor of KIT and PDGFRA mutant kinases. It is a type 1 inhibitor designed to target the active kinase conformation; all oncogenic kinases signal via this conformation. Avapritinib has demonstrated broad inhibition of KIT and PDGFRA mutations associated with GIST, and the most potent activity against activation loop mutations, which currently approved therapies do not inhibit. In contrast with existing multi-kinase inhibitors, avapritinib has shown marked selectivity for KIT and PDGFRA over other kinases. In addition, avapritinib is uniquely designed to bind and inhibit the KIT D816V mutation, the primary driver of disease in up to 95 percent of systemic mastocytosis (SM) patients. Preclinical studies have shown avapritinib potently inhibited KIT D816V at sub-nanomolar potencies with minimal off-target activity.

Blueprint Medicines is initially developing avapritinib, an investigational medicine, for the treatment of advanced GIST, advanced SM, and indolent and smoldering SM. The FDA has granted avapritinib two Breakthrough Therapy Designations, one for the treatment of PDGFRα D842V-driven GIST and one for advanced SM.

Blueprint Medicines has an exclusive collaboration and license agreement with CStone Pharmaceuticals for the development and commercialization of avapritinib and certain other drug candidates in Mainland China, Hong Kong, Macau and Taiwan. Blueprint Medicines retains development and commercial rights for avapritinib in the rest of the world.

On November 15, 2018 Deciphera Pharmaceuticals, Inc. (NASDAQ:DCPH), a clinical-stage biopharmaceutical company focused on addressing key mechanisms of tumor drug resistance, reported completion of enrollment in the INVICTUS pivotal Phase 3 clinical study evaluating the safety and efficacy of DCC-2618, a broad-spectrum KIT and PDGFRα inhibitor, in fourth-line and fourth-line-plus gastrointestinal stromal tumor (GIST) patients (Press release, Deciphera Pharmaceuticals, NOV 15, 2018, View Source [SID1234531370]).

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"We are very pleased to have completed enrollment in the INVICTUS pivotal Phase 3 study, initiated in January 2018. We expect to report top-line data from this randomized, double-blind study in mid-2019 and, if successful, we believe the results would support a New Drug Application (NDA) for full approval in fourth-line and fourth-line-plus GIST patients," said Michael D. Taylor, Ph.D., President and Chief Executive Officer of Deciphera. "Currently there are no treatments approved for fourth-line and fourth-line-plus GIST and we are grateful to those patients who participated in our study and to the GIST community for its support. In addition, we look forward to initiating later this year a second pivotal Phase 3 study, the INTRIGUE study, in second-line GIST patients who have progressed or are intolerant to front-line therapy with imatinib, including those with any KIT or PDGFRα mutation."

On October 19, 2018, Deciphera presented updated data from its ongoing Phase 1 clinical trial of DCC-2618 in patients with GIST at the European Society of Medical Oncology (ESMO) (Free ESMO Whitepaper) 2018 Congress in Munich, Germany.
View Source

About the INVICTUS Phase 3 Study
The INVICTUS Phase 3 clinical study is a randomized, double-blind, placebo-controlled, international, multicenter trial to evaluate the safety, tolerability, and efficacy of DCC-2618 compared to placebo in patients with advanced GIST whose previous therapies have included imatinib, sunitinib, and regorafenib. This study was designed to provide the definitive evidence of clinical benefit in fourth-line and fourth-line-plus GIST patients that would be required to secure a full regulatory approval. Patients were randomized 2:1 to either 150 mg of DCC-2618 or placebo once daily. The primary efficacy endpoint is median progression-free survival (PFS) as determined by independent radiologic review using modified Response Evaluation Criteria in Solid Tumors (RECIST). Secondary endpoints as determined by independent radiologic review using modified RECIST include Objective Response Rate (ORR), Time to Tumor Progression (TTP), and Overall Survival (OS). See www.clinicaltrials.gov for further information (NCT03353753).

About DCC-2618
DCC-2618 is an investigational KIT and PDGFRα kinase switch control inhibitor in clinical development for the treatment of KIT and/or PDGFRα-driven cancers, including gastrointestinal stromal tumors, or GIST, systemic mastocytosis, or SM, and other cancers. DCC-2618 was specifically designed to improve the treatment of GIST patients by inhibiting a broad spectrum of mutations in KIT and PDGFRα. DCC-2618 is a KIT and PDGFRα inhibitor that blocks initiating and secondary KIT mutations in exons 9, 11, 13, 14, 17, and 18, involved in GIST as well as the primary D816V exon 17 mutation involved in SM. DCC-2618 also inhibits primary PDGFRα mutations in exons 12, 14 and 18, including the exon 18 D842V mutation, involved in a subset of GIST.

On November 15, 2019 GT Biopharma, Inc. (OTCQB: GTBP and Euronext Paris GTBP.PA) ("GT Biopharma" or the "Company"), an immuno-oncology biotechnology company focused on innovative treatments based on the Company’s proprietary NK-engager and Bispecific Antibody Drug Conjugate platforms, reported its financial results for the third quarter ended September 30, 2018 (Press release, GT Biopharma , NOV 15, 2018, View Source [SID1234539520]).

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The Company also provided an update on its corporate progress, clinical status and anticipated milestones for its pipeline of immuno-oncology products based off the Company’s proprietary Tri-specific Killer Engager (TriKE), Tetra-specific Killer Engager (TetraKE) and bi-specific Antibody Drug Conjugate (ADC) technology platforms.

Recent Corporate Highlights:

Received FDA clearance to commence first-in-human Phase 1 study of first-in-class TriKE, GTB-3550 (OXS-3550), for the treatment of acute myelogenous leukemia, myelodysplatic syndrome and mastocytosis.

Announced positive preclinical data for two next generation TriKEs in ovarian and head and neck cancers. The studies were conducted by Dr. Daniel Vallera, Director, Section of Molecular Cancer Therapeutics and Dr. Martin Felices, Co-Director of the Translational Therapy Laboratory at the Masonic Cancer Center, University of Minnesota.

Announced agreement with major pharmaceutical company and initiated preclinical combination trial of GTB-1550 (OXS-1550) and multi-billion dollar oncology drug for testing in several hematologic malignancies.

Bolstered leadership team with appointments of Dr. Raymond W. Urbanski M.D., Ph.D. as CEO and Chairman of the Board (formerly Chief Medical Officer of the Company); well-respected industry veteran, Dr. John N. Bonfiglio as a new independent Board Member and David Cardino, CPA, as VP, Finance.
"We have made significant progress in building a solid foundation for the Company in what we believe is an important transitional phase for GT Biopharma. The additions and changes to the leadership team and execution of key preclinical, clinical and regulatory milestones are a testament to this progress," commented Raymond Urbanski, M.D., Ph.D., Chief Executive Officer of GT Biopharma. "However, as we navigate through this phase, we certainly face challenges, including ensuring we are properly funded and have the right team in place to propel the Company to our next phase of growth. Successfully completing a financing and bolstering our management team and Board in the near term remains a priority. I, along with our Board, believe GT Biopharma has a first-in-class platform technology and the potential to provide revolutionary advancements in the treatment of various cancers where there remains significant unmet need. We are committed to securing the necessary capital to continue to aggressively execute on our strategy and advance our development programs to drive significant shareholder value. I believe we are taking the necessary steps to position GT Biopharma for a transformational 2019."

Clinical Program Updates

The Company’s TriKE product candidates are single-chain, tri-specific scFv recombinant fusion proteins composed of the variable regions of the heavy and light chains (or heavy chain only) of anti-CD16 antibodies, wild-type or a modified form of IL-15 and the variable regions of the heavy and light chains of an antibody designed to precisely target a specific tumor antigen. GT Biopharma utilizes the NK stimulating cytokine human IL-15 as a crosslinker between the two scFvs which is designed to provide a self-sustaining signal leading to the proliferation and activation of NK cells thus enhancing their ability to kill cancer cells mediated by antibody-dependent cell-mediated cytotoxicity (ADCC).

The Company’s TetraKE product candidates are single-chain fusion proteins composed of human single-domain anti-CD16 antibody, wild-type IL-15 and the variable regions of the heavy and light chains of two antibodies that are designed to target two specific tumor antigens expressed on specific types of cancer cells.

GT Biopharma’s TriKEs and TetraKEs are designed to act by binding to a patient’s NK cells and a specific tumor antigen enabling an immune synapse between the now IL-15-enhanced NK cell and the targeted cancer cell. The formation of an immune synapse can induce NK cell activation which can lead to the death of the cancer cell. The Company believes the self-sustaining signal caused by its IL-15 cross-linker may enable prolonged and enhanced proliferation and activation of NK cells similar to the increased proliferation of T-cells caused by 41BB-L or CD28 intracellular domains in CAR-T therapy but without the need to enhance the patient’s NK cells ex vivo.

GTB-1550 (OXS-1550): Most Advanced Bi-specific ADC Candidate

The Company’s most advanced bi-specific ADC in development, GTB-1550, targets CD19+ and/or CD22+ hematological malignancies and is currently in the Phase 2 component of a Phase 1/2 Non-Hodgkin’s Lymphoma (NHL)/Acute Lymphocytic Leukemia (ALL) trial which is an open-label, investigator-led study.

GTB-1550 targets cancer cells expressing the CD19 receptor or CD22 receptor or both receptors. When GTB-1550 binds to cancer cells, the cancer cells internalize GTB-1550, and are killed due to the action of drug’s cytotoxic diphtheria toxin payload. GTB-1550 has demonstrated success in a Phase 1 human clinical trial in patients with relapsed/refractory B-cell lymphoma or leukemia.

The Company recently assembled a Bi-Specific ADC Advisory Board to collaboratively assess and interpret the GTB-1550 pre-clinical and clinical data, including an interim review of the Phase 1/2 study. Eighteen patients have been enrolled to date, including 12 NHL and six ALL patients. At the time of the interim review, 13 patients met the evaluation criteria, including nine NHL and four ALL patients. More than 50% of patients (seven of 13) exhibited a clinical benefit, defined as stable disease, partial remission or complete remission at Day 29. Of the seven patients, one demonstrated a complete remission (CR), one demonstrated a partial remission (PR) and five demonstrated stable disease (SD).

The efficacy signal was more prominent in ALL patients with 75% (three of four) exhibiting clinical benefit including one CR, one PR and one SD. In the NHL population, four of nine patients exhibited SD. Adverse events were mostly grade 1 and 2 and reversible. One patient had a grade 4 low platelet count, two patients had a grade 3 increase in liver function tests, or LFTs, and one patient had a grade 3 capillary leak. The Company currently expects final data for this trial to be available in the first quarter of 2019.

This work is being conducted by and under the guidance of Dr. Veronika Bachanova, Associate Professor of Medicine, Division of Hematology, Oncology and Transplantation at the University of Minnesota.

GTB-3550 (OXS-3550): TriKE product candidate

GTB-3550 is the Company’s first Tri-specific Killer Engager (TriKE) product candidate being initially developed for the treatment acute myelogenous leukemia (AML). GTB-3550 is a single-chain, tri-specific scFv recombinant fusion protein conjugate composed of the variable regions of the heavy and light chains of anti-CD16 and anti-CD33 antibodies and a modified form of IL-15. When the NK stimulating cytokine human IL-15 is used as a crosslinker between the two scFvs, it provides a self-sustaining signal that activates NK cells and enhances their ability to kill.

GT Biopharma recently announced that its Investigational New Drug (IND) application to the U.S. Food and Drug Administration (FDA) is now open and it is authorized to initiate a first-in-human Phase 1 study with GTB-3550, its first-in-class TriKE, for the treatment of AML, myelodysplatic syndrome (MDS) and mastocytosis. The study will be led by Principal Investigator, Sarah A. Cooley, MD, MS, Associate Professor, Division of Hematology, Oncology and Transplantation at Masonic Cancer Center, University of Minnesota.

This single center, first-in-human Phase 1 clinical trial of GTB-3550 will enroll up to 60 subjects with CD33-expressing refractory/relapsed AML, high-risk MDS, or advanced systemic mastocytosis. Subjects will receive a single course of GTB-3550 given as 3 weekly treatment blocks. Each block consists of four consecutive 24-hour continuous infusions of GTB-3550 followed by a 72-hour break after Block #1 and #2. Disease response will be assessed by bone marrow biopsy performed between Day 21 and Day 42 after the start of the 1st infusion. Follow-up for response and survival continues through 6 months from treatment start. The primary objective from the Phase 1 dose finding portion of the study will be to identify the maximum tolerated dose (MTD) of GTB-3550 defined as the dose level that most closely corresponds to a dose limiting toxicity rate (DLT) of 20%. The primary objective from the Phase 2 extended portion of the study will be the potential efficacy of GTB-3550, measured using rates of complete and partial remission. Subjects experiencing clinical benefit and no unacceptable side effects may be considered for a 2nd course of GTB-3550 on a compassionate basis.

The Company believes that GTB-3550 could serve as a relatively safe, cost-effective, and easy-to-use therapy for refractory/relapsed AML, high-risk MDS and advanced systemic mastocytosis and could also be combined with chemotherapy and/or other agents as frontline therapy thus targeting a much larger patient population.

GT Biopharma’s initial and ongoing work is being conducted in collaboration with the Masonic Cancer Center at the University of Minnesota under research agreements led by Dr. Jeffrey Miller, the Deputy Director and Dr. Daniel Vallera, Director, Section of Molecular Cancer Therapeutics.

GT Biopharma has an exclusive worldwide license agreement with the University of Minnesota to further develop and commercialize cancer therapies using proprietary TriKE technology developed by researchers at the university to target NK cells to cancer.

Upcoming Milestones Expected to Drive Value

Initiate Phase 1 first-in-human clinical trial of GTB-3550 for the treatment of Relapse/Refractory AML, High Risk MDS, and Advanced Systemic Mastocytosis in the first half of 2019;
Announce topline results from Phase 2a trial of GTB-1550 in Q1 2019;
Conduct end of Phase 2a (EOP2a) meeting for GTB-1550 with U.S. FDA in the first half of 2019;
Advance ongoing GTB-C3550 IND-enabling studies & TetraKE pre-clinical program to target the larger solid tumor population and are working towards beginning clinical trials in 2019;
Bolster executive management team and board with key expertise to continue to transform the Company;
Participate in key scientific conferences;
Make progress in advancing potential corporate and business development opportunities; and
Uplist to a National Exchange.
Summary of Financial Results for Third Quarter 2018

For the quarter ended September 30, 2018, the Company reported a net loss of approximately $235,783,000 or a net loss per diluted share of $4.70, compared to a net loss of $130,625,000 or a net loss per diluted share of $8.15 for the same quarter 2017. For the nine months ended September 30, 2018, GT Biopharma reported a net loss of approximately $254,955,000 or a net loss per diluted share of $5.09, compared to $138,146,000 or a net loss per diluted share of $24.54 for the same period 2017.

At September 30, 2018, the Company has an accumulated deficit of $524,453,000 and cash of $1,232,000.

On November 15, 2018 Moleculin Biotech, Inc., (Nasdaq: MBRX) ("Moleculin" or the "Company"), a clinical stage pharmaceutical company focused on the development of oncology drug candidates, all of which are based on license agreements with The University of Texas System on behalf of the M.D. Anderson Cancer Center, reported it has filed a request with the US Food and Drug Administration (FDA) for a Pre-Investigational New Drug (IND) Meeting to seek FDA’s guidance and concurrence that the WP1732 development plan will meet requirements for an Initial IND filing and initiation of a proposed Phase 1 clinical trial (Press release, Moleculin, NOV 15, 2018, View Source [SID1234531354]).

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"Independent animal model testing has now confirmed high uptake and retention of WP1732 in the pancreas," commented Walter Klemp, Moleculin’s Chairman and CEO. "Taken together with the previous observations of consistent activity against pancreatic cancer in in vitro and in vivo tumor models, this could make WP1732 ideally suited as a new therapy for treating pancreatic cancer. Our request for a Pre-IND Meeting with the FDA represents another important milestone in our effort to begin clinical trials with this promising new drug candidate."