On November 15, 2021 Phosplatin Therapeutics Inc., a clinical stage pharmaceutical company focused on oncology therapeutics, reported that it has entered into a Cooperative Research and Development Agreement (CRADA) with the National Cancer Institute (NCI), part of the National Institutes of Health (Press release, Phosplatin, NOV 15, 2021, View Source [SID1234595597]). Under the terms of the agreement, Phosplatin and NCI will collaborate on the clinical development of Phosplatin’s lead therapeutic candidate, PT-112, for patients with recurrent thymic epithelial tumors (TETs), specifically thymoma and thymic carcinoma, which are rare cancers with no FDA approved therapy.

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Phosplatin and NCI anticipate opening the Phase 2 study soon, under a recently approved investigational new drug (IND) application. The study is designed to further assess the safety and efficacy of PT-112 in patients with thymoma and thymic carcinoma, and to use correlative studies to explore molecular profiles, examine parameters of immune activation and analyze immune cell infiltration in response to PT-112 treatment, as PT-112 is known to promote immunogenic cell death (ICD) in relevant cancer models. Phosplatin will provide NCI with PT-112 drug supply and support correlative research, and NCI will oversee enrollment and care of the study’s intended 49 patients.

"Thymoma and thymic carcinoma are rare forms of cancer for which there is currently no FDA approved treatment. There remains a pressing need for novel therapies for relapsed and refractory TETs – induction of immunogenic cell death is an approach of great interest for this population with no approved immunotherapy treatment," said Arun Rajan, MD, Senior Clinician in the Thoracic and GI Malignancies Branch at the National Cancer Institute. "This clinical trial will evaluate PT-112 as a potential treatment option for our patients with TETs, and we hope to better understand PT-112’s therapeutic potential through this collaborative research program."

The collaboration is based upon early experience with PT-112 in a number of thymoma patients. "In our first Phase 1 trial of PT-112, we observed a durable clinical response in a thymoma patient with advanced metastatic disease, which deepened over many months with symptomatic improvement for the patient," said Joseph F. O’Donnell, MD, Chief Medical Officer at Phosplatin. "Along with our Phase I safety data, and our demonstration of PT-112’s ICD effects in validated models, this case helped establish the interest in this collaboration. We’re proud to be working with the exceptional colleagues at the NCI in evaluating PT-112 in a patient population that currently has no approved therapeutic options for metastatic disease."

Phosplatin holds an FDA Orphan Drug Designation for PT-112 in thymoma and thymic carcinoma. TETs, including thymomas and thymic carcinomas, are uncommon tumors of the thymus for which there is no approved FDA-approved drug. In cases of relapse following surgical intervention, TETs have the potential to metastasize and there are limited options for treatment.

Further information on this clinical trial (NCT05104736) can be found at clinicaltrials.gov.

About PT-112

PT-112 is the first small-molecule conjugate of pyrophosphate in oncology, and possesses a unique pleiotropic mechanism of action that promotes immunogenic cell death (ICD), through the release of damage associated molecular patterns (DAMPs) that bind to dendritic cells and lead to downstream immune effector cell recruitment in the tumor microenvironment. PT-112 may represent the best-in-class inducer of this immunological form of cancer cell death. Further, PT-112 harbors a property known as osteotropism, or the propensity of the drug to reach its highest concentrations in certain areas of the bone, making it a candidate for treatment of patients with cancers that originate in, or metastasize to, the bone. The first in-human study of PT-112 demonstrated an attractive safety profile and evidence of long-lasting responses among heavily pre-treated patients and won "Best Poster" within the Developmental Therapeutics category at the ESMO (Free ESMO Whitepaper) 2018 Annual Congress. The combination Phase 1b dose escalation study of PT-112 with PD-L1 checkpoint inhibitor avelumab in solid tumors was reported in an oral presentation at the ESMO (Free ESMO Whitepaper) 2020 Virtual Congress. The Phase 1 study in patients with relapsed or refractory multiple myeloma presented at ASH (Free ASH Whitepaper) is the third completed Phase 1 study of PT-112. Monotherapy Phase 2 development is ongoing in mCRPC, and the PD-L1 combination study is ongoing in a dose confirmation cohort of non-small cell lung cancer (NSCLC) patients, and will soon include the Phase 2 proof of concept study in thymic epithelial tumors under the company’s collaboration with the NCI.

On November 15, 2021 iBio, Inc. (NYSEA:IBIO) ("iBio" or the "Company"), a developer of next-generation biopharmaceuticals and pioneer of the sustainable FastPharming Manufacturing System, reported a research collaboration with the University of Texas Southwestern Medical Center ("UT Southwestern") to explore in solid tumors the anti-cancer potential of the molecule that is part of the IBIO-100 program (Press release, iBioPharma, NOV 15, 2021, View Source [SID1234595596]).

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Among all the stromal cells that present in the tumor microenvironment, cancer-associated fibroblasts ("CAFs") are one of the most abundant and critical components of tumor tissue, which provide physical support for tumor cells and can promote or retard tumorigenesis in a context-dependent manner. CAFs are also involved in the modulation of many components of the immune system, and recent studies have revealed their roles in immune evasion and poor responses to cancer immunotherapy.1 In addition, CAF response to chemotherapy is highly variable.2

Through a series of planned in vitro and in vivo studies, the collaboration will evaluate the potential of the anti-fibrotic effects of iBio’s endostatin E4 molecule to improve the efficacy of concomitant treatments, such as chemotherapy and immunotherapy, in cancer models with a fibrotic component. The Company is currently developing endostatin E4 as IBIO-100 for fibrotic diseases.

"We are thrilled to combine our efforts with one of the world’s leading fibrotic tumor cancer research labs at one of the premier academic medical centers in the nation," said Tom Isett, Chairman and Chief Executive Officer at iBio. "IBIO-100 has shown strong therapeutic potential in preclinical models of two major fibrotic diseases, systemic scleroderma and idiopathic pulmonary fibrosis, and we look forward to exploring these same potentially transformative benefits in the treatment of solid tumors."

"Through many years of research, we have come to understand that an overabundant fibrotic tumor microenvironment is associated with poor cancer treatment outcomes," commented Martin Brenner, DVM. Ph.D., iBio’s Chief Scientific Officer. "We have also learned that destruction of CAFs can lead to worse prognosis, not better.3 We believe that our endostatin E4 molecule has the potential to normalize fibrosis without the detrimental effects of CAF destruction, thereby improving responses to current standard of care treatments such as chemotherapy and immunotherapy. We look forward to exploring this potential with our partners at UT Southwestern."

On November 15, 2021 NKGen Biotech, a subsidiary of NKMax, harnessing the power of the body’s immune system through the development of Natural Killer (NK) cell therapies, reported that data from a Phase 1/2a clinical trial, sponsored by NKMax, evaluating SNK01 (autologous natural killer cells) plus pembrolizumab in Non-Small Cell Lung Cancer (NSCLC) patients in Korea was presented at the 36th Annual Meeting of the Society for Immunotherapy of Cancer (SITC) (Free SITC Whitepaper) held November 10 – 14, 2021, in Washington, D.C (Press release, NKMax America, NOV 15, 2021, View Source [SID1234595595]).

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The poster "Phase I/IIa randomized trial evaluating safety and efficacy of SNK01 plus pembrolizumab in patients with Stage IV Non-Small Cell Lung Cancer (NSCLC) who have failed first-line platinum-based therapy" was presented by NKMax on November 10th at the Industry Program Reception.

"We are extremely pleased to share promising clinical data showing safety and superior efficacy of our SNK01 autologous NK cell therapy in combination with pembrolizumab," said Sangwoo Park, Chief Executive Officer of NKGen Biotech. "The results of the trial demonstrate that SNK01 can be safely combined with checkpoint inhibitors, resulting in meaningfully improved clinical outcomes, especially compared to the checkpoint inhibitor alone. We look forward to seeing similar results in other solid tumor settings as we continue the clinical development of SNK01."

In this trial, eighteen patients with advanced Stage IV NSCLC who failed prior frontline platinum-based therapy were randomized 2:1 to received pembrolizumab every three weeks with +/- 6 weekly infusions of SNK01. Two dosing groups for SNK01 were evaluated in combination with pembrolizumab: 2×109 cells/dose and 4×109 cells/dose. The primary endpoint was safety and secondary endpoints were objective response rate (ORR), progression-free survival (PFS), overall survival, and quality of life.

The median PFS was superior in the SNK01 combination group and results were statistically significant (6.2 months vs. 1.6 months; p = 0.001). Furthermore, a dose response was noted as PFS in the higher 4×109 cells/dose SNK01+ pembrolizumab combination arm was 9.4 months compared to 1.6 months for the pembrolizumab only group. No new safety signals were seen when SNK was added to pembrolizumab.

In this trial, combination of SNK01 and pembrolizumab enhanced antitumor activity in advanced NSCLC patients, and suggests possible utilization of combining SNK01 with pembrolizumab. NKGen Biotech/NKMax will continue to explore SNK01 in various tumor settings, including the combination approach with different modalities.

On November 15, 2021 Aadi Bioscience, Inc. ("Aadi") (Nasdaq: AADI), a clinical-stage biopharmaceutical company focusing on precision therapies for genetically-defined cancers with alterations in mTOR pathway genes, reported two oral presentations that were made related to its lead candidate, FYARRO (ABI-009 or nab-sirolimus) at the Connective Tissue Oncology Society (CTOS) 2021 Annual Meeting, held virtually from November 10-13, 2021 (Press release, Aadi Bioscience, NOV 15, 2021, View Source [SID1234595594]). CTOS is a multi-disciplinary group of specialized physicians, medical professionals and scientists from around the world who connect and share their knowledge, experiences and research for the advancement of treatment of sarcomas. Both studies, sponsored by Aadi, provided data in patients with advanced malignant PEComa, which is the clinical indication currently under review by the Food and Drug Administration (FDA) with a November 26, 2021 target Prescription Drug User Fee Act (PDUFA) date.

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Abstract (ID: 1080984), lead-authored by Mark A. Dickson, M.D., medical oncologist at Memorial Sloan Kettering Cancer Center is entitled, "nab-Sirolimus in Patients with Malignant PEComa Previously Treated With mTOR Inhibitors: Emerging Experience from an Expanded Access Program". Sixteen patients with Advanced Malignant Perivascular Epithelioid Cell Tumors (PEComa) were treated in an Expanded Access Program (NCT03817515) with nab-sirolimus, dosed intravenously at 100 mg/m2 given on day one and day eight of a 21-day cycle. The investigators concluded that nab-sirolimus showed encouraging clinical benefit including partial responses (PR) in 25% of patients previously progressing on other mTOR inhibitors and, in some cases, other targeted therapies. Disease control rate (DCR) as defined by complete or partial response + stable disease for ≥3 months, was 63%. In this study, the safety profile of nab-sirolimus was acceptable and allowed ongoing treatment for almost one year or more in several patients. In addition, consistent with results of the AMPECT trial, TSC1 or TSC2 alterations were associated with a higher response rate of 44% of patients, despite prior progression on other mTOR inhibitors and/or multiple lines of prior therapy. These results provide further rationale for investigation of nab-sirolimus in a tumor-agnostic study in patients with pathogenic inactivating TSC1 or TSC2 alterations.

A second abstract (ID: 1080747), lead-authored by Andrew J. Wagner, M.D., Ph.D., a senior oncologist at Dana-Farber Cancer Institute, is entitled, "Final Analysis from AMPECT, an Open-Label Phase 2 Registration Trial of nab-Sirolimus for Patients with Advanced Malignant Perivascular Epithelioid Cell Tumors (PEComa)". This abstract provided a final analysis of the AMPECT study with a data cut of June 30, 2021, updating the recent publication in the Journal of Clinical Oncology which was based on a data cut of November 23, 2020. nab-Sirolimus demonstrated rapid and durable responses in mTOR-naïve patients with locally advanced unresectable or metastatic PEComa. Specifically, of 31 treated and evaluable patients, the independently assessed confirmed overall response rate (ORR) was 39% (12/31, 95% confidence interval: 22, 58); of which 7% (2/31) of patients had a complete response (CR) and 32% (10/31) had a PR. Disease control was achieved in 71% of patients. The patient responses demonstrated long-term durability with a duration of response (DOR) of 92% at 6 months and 66% at 36 months amongst the 12 patients with a response. At the final analysis, the median DOR has not been reached, 50% of patients had a DOR of over 36 months (range 5.6, 55.5+ months). By the final analysis, two patients converted from a PR to CR after 11 months and 34 months of treatment, respectively. Finally, nab-sirolimus demonstrated an acceptable safety profile with no grade 4 or 5 treatment-related adverse events (TRAE) and no unexpected adverse events or new safety signals. Some of the most common TRAEs were stomatitis, rash, fatigue, anemia, nausea, diarrhea and hyperglycemia.

Dr. Dickson commented, "I am encouraged by the activity of nab-sirolimus not only in the AMPECT study, but in advanced PEComa patients previously progressing on other mTOR inhibitors, as well as in other solid tumor histologies with TSC1 or TSC2 inactivating alterations that has been previously presented. There is a strong rationale for conducting a broader investigation of nab-sirolimus in a tumor-agnostic setting."

About Malignant PEComa

Perivascular epithelioid-cell tumors (PEComa), defined by the World Health Organization as ‘mesenchymal tumors composed of distinctive cells that show a focal association with blood-vessel walls and usually express both melanocytic and smooth muscle markers,’ are a rare subset of soft-tissue sarcomas, with an undefined cell of origin. While there is no formal epidemiology for malignant PEComa, it is estimated that there are about 100-300 new patients per year in the United States. Malignant PEComas may arise in almost any body site (typically the uterus, retroperitoneum, lung, kidney, liver, genitourinary, and gastrointestinal tract with a female predominance) and can have an aggressive clinical course including distant metastases and ultimate death. The estimated survival based on retrospective reports is 12-16 months. Cytotoxic chemotherapies typically used for sarcoma show minimal benefit and there are currently no drugs approved for this disease. Malignant PEComas have been shown to frequently harbor mutations in the TSC1 and/or TSC2 genes that result in the activation of mTOR pathway making it a rational therapeutic target for this disease.

On November 15, 2021 Nymox Pharmaceutical Corporation (NASDAQ: NYMX) (the "Company") reported that it will be presenting at the Torrey Hills Capital Emerging Growth Conference this week (Press release, Nymox, NOV 15, 2021, View Source [SID1234595593]). The two-day conference is being held in San Diego, California.

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The Company has indicated that it will be making more presentations to the investment community at this time, and it is very pleased to attend this meeting which has a good number of very high caliber individuals and sophisticated investors that participate.