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Proffered paper session - Immunotherapy of Cancer

4747 - Responses and Durability of Clinical Benefit in Renal Cell Carcinoma Treated with Pegilodecakin in Combination With Anti-PD-1 Inhibitors

Date

22 Oct 2018

Session

Proffered paper session - Immunotherapy of Cancer

Presenters

Aung Naing

Citation

Annals of Oncology (2018) 29 (suppl_8): viii400-viii441. 10.1093/annonc/mdy288

Authors

N.M. Tannir1, A. Naing2, K.P. Papadopoulos3, D.J. Wong4, W.M. Korn5, R. Aljumaily6, K.A. Autio7, S. Pant2, T.M. Bauer8, A. Drakaki4, N. Daver9, A. Hung10, M. Oft11, J. Leveque12

Author affiliations

  • 1 Genitourinary Medical Oncology, MD Anderson Cancer Center, 77030 - Houston/US
  • 2 Investigational Cancer Therapeutics, MD Anderson Cancer Center, 77030 - Houston/US
  • 3 Clinical research, START Center for Cancer Care, 78229 - San Antonio/US
  • 4 Medicine, University of California Los Angeles (UCLA), 90404 - Los Angeles/US
  • 5 Medicine, University of California San Francisco (UCSF), 94115 - San Francisco/US
  • 6 Hematology/oncology, OUHSC, 73104 - Oklahoma City/US
  • 7 Genitourinary Oncology, Memorial Sloan Kettering Cancer Center, 10065 - New York/US
  • 8 Medical Oncology, Oncology, Sarah Cannon Research Institute, Tennessee Oncology, 37203 - Nashville/US
  • 9 Leukemia, MD Anderson Cancer Center, 77030 - Houston/US
  • 10 Biostatistics, ARMO BioSciences, 94063 - Redwood City/US
  • 11 Pre-clinical And Clinical Development, ARMO BioSciences, 94063 - Redwood City/US
  • 12 Scientific Affiars, ARMO BioSciences, 94063 - Redwood City/US
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Resources

Abstract 4747

Background

Pegilodecakin (AM0010) is a pegylated recombinant human interleukin-10 that stimulates activation, survival and clonal expansion of intra-tumoral, tumor antigen specific CD8+ T cells. Pegilodecakin also up-regulates IFNγ and the expression of MHC, which enables tumor antigen presentation in neoplasias of low mutational burden and promotes immunosurveillance by expanding effector memory T cells (Mumm et al. 2010, 2011). Finally, pegilodecakin reduces tumor inflammatory processes such as angiogenesis and and metastatic dissemination (Oft 2017), the off-target auto-immune side effects of immunotherapy and the inflammatory-related side effects of some chemotherapies.

Methods

In a 353 patient phase 1/1b dose escalation and expansion study conducted in the US from 2013 to 2017, 37 pretreated RCC subjects received pegilodecakin with pembrolizumab or nivolumab. Responses were assessed by irRC.

Results

TrAE were reversible and transient. G 3/4 TrAE in pts who received pegilodecakin (20 ug/kg) + nivo or pembro included anemia (10), thrombocytopenia (7) and hypertriglyceridemia (6). Pts on 10 ug/kg pegilodecakin + nivo or pembro did not have G3/4 anemia or thrombocytopenia.Table: 1130O

PegilodecakinNPrior TherapiesORRDCRmPFSmOSOne-YearirAE6irAE6
RegimenE (ITT)5Median (Range)%%mosmosOS (%)All Grades (%)Grades 3 & 4 (%)
Monotherapy116 (19)3 (0-7)25.056.01.99.8-5.30.0
Plus Pembrolizumab28 (8)2 (0-5)50.010016.7NR88.0--
Plus Nivolumab326 (29)1 (0-5)39.081.010.1NR89.0--
Pooled Plus Anti-PD-1434 (37)2 (0-5)41.085.012.5NR89.016.25.4
1

20µg/kg QD, SC;

2

2mg/kg, q3wk IV;

3

3mg/kg, q2wk IV;

4

pembrolizumab and nivolumab cohorts combined;

5

E (evaluable - baseline tumor assessment + >1 post-baseline assessments, and no major protocol deviations); ITT (intent to treat);

6

irAE - Immune-Related Adverse Events (e.g. pneumonitis, adrenal insufficiency, thyroiditis, hypothyroiditis, hypophysitis, mucositis/stomatis, colitis, hepatitis, cholangitis, polyarthritis, myasthenia gravis, optic neuritis); Data cut on 05.01.18; Median follow-up for pembrolizumab cohort 34.6 months (12.3-36.2 months); Median follow-up for nivolumab cohort 18.9 months (0.5-25.9 months)

Conclusions

Pegilodecakin when combined with anti-PD-1 therapy in advanced RCC patients was associated with response rates and durability of benefit greater than has been seen with anti-PD-1 alone. These preliminary findings support further studies of pegilodecakin with anti-PD-1 therapies.

Clinical trial identification

NCT02009449.

Legal entity responsible for the study

ARMO BioSciences.

Funding

ARMO BioSciences.

Editorial Acknowledgement

Disclosure

A. Hung, M. Oft, J. Leveque: Employee: ARMO BioSciences. All other authors have declared no conflicts of interest.

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