On November 7, 2017 Nektar Therapeutics (Nasdaq: NKTR) reported that new clinical data will be presented for NKTR-214, Nektar’s lead immuno-oncology candidate, a CD122-biased agonist, at the Society for Immunotherapy of Cancer (SITC) (Free SITC Whitepaper) Annual Meeting at the Gaylord National Hotel & Convention Center in National Harbor, Maryland (Press release, Nektar Therapeutics, NOV 7, 2017, View Source [SID1234521653]). Data from the ongoing PIVOT Phase 1/2 study, which is evaluating NKTR-214 in combination with the checkpoint inhibitor nivolumab, will be presented in an oral presentation on Saturday, November 11th. Six additional presentations for immuno-oncology (I-O) candidates in Nektar’s pipeline will also be presented at the meeting; specifically, one additional clinical and three preclinical presentations on NKTR-214; one preclinical presentation on NKTR-255, an IL-15 memory T-cell stimulating cytokine; and one preclinical presentation on NKTR-262, a novel toll-like receptor (TLR) agonist. The abstracts published in advance of the SITC (Free SITC Whitepaper) Annual Meeting were made available at 8 a.m. Eastern Time today on the Journal for ImmunoTherapy of Cancer’s website at View Source

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"The initial abstract data for these first set of 16 patients from the PIVOT study evaluating NKTR-214 in combination with nivolumab is very exciting," said Mary Tagliaferri, M.D., Senior Vice President of Clinical Development at Nektar Therapeutics. "We look forward to presenting additional new data from all of the 38 patients enrolled in the dose escalation cohort of the study in Dr. Diab’s oral presentation at SITC (Free SITC Whitepaper) on Saturday afternoon, including the first efficacy data for patients with PD-L1 negative non-small cell lung cancer who had progressed on prior chemotherapy. We believe there is tremendous need for more efficacious and better tolerated I-O combination treatment regimens, particularly treatments that can be used for the majority of cancer patients whose tumors don’t express PD-L1 as these patients can’t currently benefit from treatment with checkpoint inhibitors."

NKTR-214 is an investigational immuno-stimulatory therapy designed to expand specific cancer-fighting CD8+ effector T cells and natural killer (NK) cells directly in the tumor micro-environment and increase expression of PD-1 on these immune cells.

Details of the SITC (Free SITC Whitepaper) presentations for Nektar’s I-O portfolio are below.

Oral Presentation

Date: Saturday, November 11, 2017, Presentation Time: 5:00 p.m. Eastern Time
Session Title: Clinical Trials: Novel Combinations
Presentation Title: PIVOT-02: Preliminary safety, efficacy and biomarker results from the Phase 1/2 study of CD-122-biased agonist NKTR-214 plus nivolumab in patients with locally advanced/metastatic solid tumors
Presenter: Dr. Adi Diab, MD Anderson Cancer Center
Location: Gaylord National Hotel & Convention Center, Maryland Ballroom A

The online abstract for the oral clinical presentation includes preliminary data as of July 25, 2017 for 16 patients with Stage IV melanoma and renal cell carcinoma enrolled in the dose-escalation phase of the PIVOT study of NKTR-214 in combination with nivolumab (NCT02983045). New and updated interim data for a total of 38 patients with Stage IV melanoma, renal cell carcinoma and non-small cell lung cancer which were enrolled in the dose-escalation phase of the PIVOT study, will be presented at the SITC (Free SITC Whitepaper) Annual Meeting. A copy of the slides from Dr. Diab’s presentation will be made available on Nektar’s corporate website on Saturday, November 11th at 6:00 p.m. Eastern Time, in accordance with the embargo policies set forth by SITC (Free SITC Whitepaper).

Poster Presentations

Biomarkers and Immune Monitoring

Clinical Data Abstract #P77: The Novel IL-2 Cytokine Immune Agonist NKTR-214 Harnesses the Adaptive and Innate Immune System for the Treatment of Solid Cancers
Presenter: Salah Eddine Bentebibel, University of Texas MD Anderson Cancer Center
Date and Time: Friday, November 10, 2017, 12:30-2:00 p.m. Eastern Time

Cancer Vaccines

Preclinical Data Abstract #P140: NKTR-214 enhances anti-tumor T-cell immune responses induced by checkpoint blockade or vaccination
Presenter: Meenu Sharma, University of Texas MD Anderson Cancer Center
Date and Time: Saturday, November 11, 2017, 12:30-2:00 p.m. Eastern Time

Combination Therapy

Preclinical Data Abstract #P274: Combination of NKTR-214 and radiotherapy (RT) to reverse anergy and expand tumor-specific CD8 T Cells
Presenter: Joshua Walker, Oregon Health & Science University
Date and Time: Saturday, November 11, 2017,12:30-2:00 p.m. Eastern Time

Preclinical Data Abstract #P275: Harnessing the innate and adaptive immune system to eradicate treated and distant untreated solid tumors
Presenter: Saul Kivimae, Nektar Therapeutics
Date and Time: Friday, November 10, 2017, 12:30-2:00 p.m. Eastern Time

Immune Modulation, Cytokines, and Antibodies

Preclinical Data Abstract #P332: Pre-clinical efficacy and tolerability of NKTR-255, a polymer-conjugated IL-15 for immuno-oncology
Presenter: Peiwen Kuo, Nektar Therapeutics
Date and Time: Saturday, November 11, 2017, 12:30-2:00 p.m. Eastern Time

Personalized Vaccines and Technologies/Personalized Medicines

Preclinical Data Abstract #P434: Great Apes Adenoviral vaccine encoding neoantigens synergizes with immunomodulators to cure established tumors in mice
Presenter: Anna Morena D’Alise, Nouscom srl
Date and Time: Saturday, November 11, 2017, 12:30-2:00 p.m. Eastern Time

Analyst and Investor Event
Nektar Therapeutics will webcast an analyst and investor event with clinical investigators during the SITC (Free SITC Whitepaper) Annual Meeting beginning on Saturday, November 11, 2017 at 6:15 p.m. Eastern Time. Featured speakers include Dr. Patrick Hwu of MD Anderson Cancer Center, Dr. Adi Diab of MD Anderson Cancer Center, Dr. Michael E. Hurwitz of Yale Cancer Center, Dr. Antoni Ribas of UCLA Medical Center and Dr. Nizar M. Tannir of MD Anderson Cancer Center. The webcast is accessible from the investor relations page of Nektar’s website at www.nektar.com.

About NKTR-214
NKTR-214 is a clinical-stage, immuno-stimulatory therapy designed to expand specific cancer-fighting CD8+ effector T cells and natural killer (NK) cells directly in the tumor micro-environment and increase expression of PD-1 on these immune cells. NKTR-214 is a CD122-biased IL-2 pathway agonist that targets cancer-fighting immune cells to stimulate their proliferation and activation. In clinical and preclinical studies, treatment with NKTR-214 resulted in expansion of these cells and their mobilization into the tumor.1,2 NKTR-214 has an antibody-like dosing regimen similar to the existing checkpoint inhibitor class of approved medicines.

About NKTR-255
NKTR-255 is an immune-stimulating cytokine designed to engage all three IL-15 receptors and signal through all of these to activate the IL-15 pathway. NKTR-255 stimulates proliferation and survival of Natural Killer (NK) Cells, CD8+ T Cells and enhances long-term immunological memory which may lead to sustained anti-tumor immune response.

About NKTR-262
NKTR-262 is a first-in-class investigational small molecule intended to target toll-like receptors (TLRs) on innate immune cells in the body. NKTR-262 is designed to overcome the body’s dysfunction of antigen-presenting cells (APC), and is being developed as a single intra-tumoral injection to be administered at the start of therapy with NKTR-214 to induce an abscopal response and achieve the goal of complete tumor regression in cancer patients treated with both therapies.