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Melanoma: HELP
Articles by Kenneth Emancipator
Based on 5 articles published since 2010
(Why 5 articles?)
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Between 2010 and 2020, K. Emancipator wrote the following 5 articles about Melanoma.
 
+ Citations + Abstracts
1 Review Assessing Tumor-Infiltrating Lymphocytes in Solid Tumors: A Practical Review for Pathologists and Proposal for a Standardized Method from the International Immuno-Oncology Biomarkers Working Group: Part 2: TILs in Melanoma, Gastrointestinal Tract Carcinomas, Non-Small Cell Lung Carcinoma and Mesothelioma, Endometrial and Ovarian Carcinomas, Squamous Cell Carcinoma of the Head and Neck, Genitourinary Carcinomas, and Primary Brain Tumors. 2017

Hendry, Shona / Salgado, Roberto / Gevaert, Thomas / Russell, Prudence A / John, Tom / Thapa, Bibhusal / Christie, Michael / van de Vijver, Koen / Estrada, M V / Gonzalez-Ericsson, Paula I / Sanders, Melinda / Solomon, Benjamin / Solinas, Cinzia / Van den Eynden, Gert G G M / Allory, Yves / Preusser, Matthias / Hainfellner, Johannes / Pruneri, Giancarlo / Vingiani, Andrea / Demaria, Sandra / Symmans, Fraser / Nuciforo, Paolo / Comerma, Laura / Thompson, E A / Lakhani, Sunil / Kim, Seong-Rim / Schnitt, Stuart / Colpaert, Cecile / Sotiriou, Christos / Scherer, Stefan J / Ignatiadis, Michail / Badve, Sunil / Pierce, Robert H / Viale, Giuseppe / Sirtaine, Nicolas / Penault-Llorca, Frederique / Sugie, Tomohagu / Fineberg, Susan / Paik, Soonmyung / Srinivasan, Ashok / Richardson, Andrea / Wang, Yihong / Chmielik, Ewa / Brock, Jane / Johnson, Douglas B / Balko, Justin / Wienert, Stephan / Bossuyt, Veerle / Michiels, Stefan / Ternes, Nils / Burchardi, Nicole / Luen, Stephen J / Savas, Peter / Klauschen, Frederick / Watson, Peter H / Nelson, Brad H / Criscitiello, Carmen / O'Toole, Sandra / Larsimont, Denis / de Wind, Roland / Curigliano, Giuseppe / André, Fabrice / Lacroix-Triki, Magali / van de Vijver, Mark / Rojo, Federico / Floris, Giuseppe / Bedri, Shahinaz / Sparano, Joseph / Rimm, David / Nielsen, Torsten / Kos, Zuzana / Hewitt, Stephen / Singh, Baljit / Farshid, Gelareh / Loibl, Sibylle / Allison, Kimberly H / Tung, Nadine / Adams, Sylvia / Willard-Gallo, Karen / Horlings, Hugo M / Gandhi, Leena / Moreira, Andre / Hirsch, Fred / Dieci, Maria V / Urbanowicz, Maria / Brcic, Iva / Korski, Konstanty / Gaire, Fabien / Koeppen, Hartmut / Lo, Amy / Giltnane, Jennifer / Rebelatto, Marlon C / Steele, Keith E / Zha, Jiping / Emancipator, Kenneth / Juco, Jonathan W / Denkert, Carsten / Reis-Filho, Jorge / Loi, Sherene / Fox, Stephen B. ·Departments of *Pathology §§§Medical Oncology, Peter MacCallum Cancer Centre, Melbourne †The Sir Peter MacCallum Department of Oncology Departments of **Pathology ∥∥Medicine, University of Melbourne ¶¶Department of Anatomical Pathology, Royal Melbourne Hospital, Parkville #Department of Anatomical Pathology, St Vincent's Hospital Melbourne, Fitzroy ††Department of Medical Oncology, Austin Health ‡‡Olivia Newton-John Cancer Research Institute, Heidelberg §§School of Cancer Medicine, La Trobe University, Bundoora §§§§§Centre for Clinical Research and School of Medicine, The University of Queensland ∥∥∥∥∥Pathology Queensland, Royal Brisbane and Women's Hospital, Brisbane §§§§§§§§§§The Cancer Research Program, Garvan Institute of Medical Research, Darlinghurst ∥∥∥∥∥∥∥∥∥∥Australian Clinical Labs, Bella Vista ‡‡‡‡‡‡‡‡‡‡‡‡Directorate of Surgical Pathology, SA Pathology §§§§§§§§§§§§Discipline of Medicine, Adelaide University, Adelaide, Australia ***********Department of Surgical Oncology, Netherlands Cancer Institute †††††††††††††Department of Pathology ##Divisions of Diagnostic Oncology & Molecular Pathology, Netherlands Cancer Institute-Antoni van Leeuwenhoek, Amsterdam, The Netherlands ###Université Paris-Est ****INSERM, UMR 955 ††††Département de pathologie, APHP, Hôpital Henri-Mondor, Créteil ∥∥∥∥∥∥∥∥∥Service de Biostatistique et d'Epidémiologie, Gustave Roussy, CESP, Inserm U1018, Université-Paris Sud, Université Paris-Saclay ¶¶¶¶¶¶¶¶¶¶INSERM Unit U981, and Department of Medical Oncology, Gustave Roussy, Villejuif ##########Faculté de Médecine, Université Paris Sud, Kremlin-Bicêtre †††††††Department of Surgical Pathology and Biopathology, Jean Perrin Comprehensive Cancer Centre ‡‡‡‡‡‡‡University of Auvergne UMR1240, Clermont-Ferrand, France ‡‡‡‡Department of Medicine, Clinical Division of Oncology §§§§Institute of Neurology, Comprehensive Cancer Centre Vienna, Medical University of Vienna, Vienna ††††††††††††††Institute of Pathology, Medical University of Graz, Austria ∥∥∥∥European Institute of Oncology ¶¶¶¶School of Medicine ######Department of Pathology, Istituto Europeo di Oncologia, University of Milan, Milan ¶¶¶¶¶¶¶¶¶¶¶¶¶Department of Surgery, Oncology and Gastroenterology, University of Padova #############Medical Oncology 2, Veneto Institute of Oncology IOV-IRCCS, Padua, Italy †††††Molecular Oncology Group, Vall d'Hebron Institute of Oncology, Barcelona †††††††††††Pathology Department, IIS-Fundacion Jimenez Diaz, UAM, Madrid, Spain §Department of Pathology and TCRU, GZA ¶¶¶Department of Pathology, GZA Ziekenhuizen, Antwerp ∥Laboratory of Experimental Urology, Department of Development and Regeneration, KU Leuven ‡‡‡‡‡‡‡‡‡‡‡Department of Pathology, University Hospital Leuven, Leuven, Belgium ¶Department of Pathology, AZ Klina, Brasschaat ††††††Department of Pathology, GZA Ziekenhuizen, Sint-Augustinus, Wilrijk ∥∥∥Molecular Immunology Unit ‡‡‡‡‡‡Department of Medical Oncology, Institut Jules Bordet, Université Libre de Bruxelles ‡Breast Cancer Translational Research Laboratory/Breast International Group, Institut Jules Bordet **************European Organisation for Research and Treatment of Cancer (EORTC) Headquarters *******Department of Pathology, Institut Jules Bordet, Université Libre de Bruxelles, Brussels, Belgium §§§§§§§Department of Surgery, Kansai Medical School, Hirakata, Japan #######Severance Biomedical Science Institute and Department of Medical Oncology, Yonsei University College of Medicine, Seoul, South Korea ∥∥∥∥∥∥∥∥Tumor Pathology Department, Maria Sklodowska-Curie Memorial Cancer Center ¶¶¶¶¶¶¶¶Institute of Oncology, Gliwice Branch, Gliwice, Poland ‡‡‡‡‡‡‡‡‡‡‡‡‡‡Pathology and Tissue Analytics, Roche Innovation Centre Munich, Penzberg †††††††††Institute of Pathology, Charité Universitätsmedizin Berlin ‡‡‡‡‡‡‡‡‡VMscope GmbH, Berlin ¶¶¶¶¶¶¶¶¶German Breast Group GmbH, Neu-Isenburg, Germany **********Trev & Joyce Deeley Research Centre, British Columbia Cancer Agency ††††††††††Department of Biochemistry and Microbiology, University of Victoria, Victoria Departments of ‡‡‡‡‡‡‡‡‡‡Medical Genetics #########Pathology and Laboratory Medicine ¶¶¶¶¶¶¶¶¶¶¶Department of Pathology and Laboratory Medicine, Genetic Pathology Evaluation Centre, University of British Columbia, Vancouver, BC ###########Department of Pathology and Laboratory Medicine, University of Ottawa, Ottawa, Canada §§§§§§§§§§§Department of Pathology and Laboratory Medicine, Weill Cornell Medical College, Doha, Qatar ‡‡‡‡‡‡‡‡Department of Pathology and Laboratory Medicine, Rhode Island Hospital and Lifespan Medical Center §§§§§§§§Warren Alpert Medical School of Brown University, Providence ¶¶¶¶¶National Surgical Adjuvant Breast and Bowel Project Operations Center/NRG Oncology, Pittsburgh, PA †††Breast Cancer Research Program, Vanderbilt Ingram Cancer Center, Vanderbilt University Departments of ‡‡‡Pathology, Microbiology and Immunology ########Department of Medicine, Vanderbilt University Medical Centre *********Vanderbilt Ingram Cancer Center, Nashville §§§§§§§§§Department of Pathology, Yale University School of Medicine, New Haven ∥∥∥∥∥∥∥∥∥∥∥Department of Oncology, Montefiore Medical Centre, Albert Einstein College of Medicine ∥∥∥∥∥∥∥Montefiore Medical Center ¶¶¶¶¶¶¶The Albert Einstein College of Medicine, Bronx, NY ********Department of Pathology, Brigham and Women's Hospital #####Cancer Research Institute and Department of Pathology, Beth Israel Deaconess Cancer Center ******Harvard Medical School ¶¶¶¶¶¶¶¶¶¶¶¶Division of Hematology-Oncology, Beth Israel Deaconess Medical Center ††††††††Department of Cancer Biology ‡‡‡‡‡‡‡‡‡‡‡‡‡Dana-Farber Cancer Institute, Boston, MA ∥∥∥∥∥∥∥∥∥∥∥∥∥Department of Medicine, Division of Medical Oncology, University of Colorado Anschutz Medical Campus, Aurora, CO ‡‡‡‡‡Department of Cancer Biology, Mayo Clinic, Jacksonville, FL ∥∥∥∥∥∥Department of Pathology and Laboratory Medicine, Indiana University, Indianapolis, IN ¶¶¶¶¶¶Cancer Immunotherapy Trials Network, Central Laboratory and Program in Immunology, Fred Hutchinson Cancer Research Center, Seattle, WA ††††††††††††Department of Pathology, New York University Langone Medical Centre ############New York University Medical School *************Perlmutter Cancer Center §§§§§§§§§§§§§Pulmonary Pathology, New York University Center for Biospecimen Research and Development, New York University ***************Department of Pathology, Memorial Sloan-Kettering Cancer Center ####Departments of Radiation Oncology and Pathology, Weill Cornell Medicine, New York, NY *****Department of Pathology, University of Texas M.D. Anderson Cancer Center, Houston, TX ∥∥∥∥∥∥∥∥∥∥∥∥Pathology Department, Stanford University Medical Centre, Stanford ∥∥∥∥∥∥∥∥∥∥∥∥∥∥Department of Pathology, Stanford University, Palo Alto ***Department of Pathology, School of Medicine, University of California, San Diego §§§§§§§§§§§§§§Research Pathology, Genentech Inc., South San Francisco, CA *************Laboratory of Pathology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda ¶¶¶¶¶¶¶¶¶¶¶¶¶¶Translational Sciences, MedImmune, Gaithersberg, MD §§§§§§Academic Medical Innovation, Novartis Pharmaceuticals Corporation, East Hanover ##############Translational Medicine, Merck & Co. Inc., Kenilworth, NJ. ·Adv Anat Pathol · Pubmed #28777143.

ABSTRACT: Assessment of the immune response to tumors is growing in importance as the prognostic implications of this response are increasingly recognized, and as immunotherapies are evaluated and implemented in different tumor types. However, many different approaches can be used to assess and describe the immune response, which limits efforts at implementation as a routine clinical biomarker. In part 1 of this review, we have proposed a standardized methodology to assess tumor-infiltrating lymphocytes (TILs) in solid tumors, based on the International Immuno-Oncology Biomarkers Working Group guidelines for invasive breast carcinoma. In part 2 of this review, we discuss the available evidence for the prognostic and predictive value of TILs in common solid tumors, including carcinomas of the lung, gastrointestinal tract, genitourinary system, gynecologic system, and head and neck, as well as primary brain tumors, mesothelioma and melanoma. The particularities and different emphases in TIL assessment in different tumor types are discussed. The standardized methodology we propose can be adapted to different tumor types and may be used as a standard against which other approaches can be compared. Standardization of TIL assessment will help clinicians, researchers and pathologists to conclusively evaluate the utility of this simple biomarker in the current era of immunotherapy.

2 Clinical Trial Outcomes by line of therapy and programmed death ligand 1 expression in patients with advanced melanoma treated with pembrolizumab or ipilimumab in KEYNOTE-006: A randomised clinical trial. 2018

Carlino, Matteo S / Long, Georgina V / Schadendorf, Dirk / Robert, Caroline / Ribas, Antoni / Richtig, Erika / Nyakas, Marta / Caglevic, Christian / Tarhini, Ahmed / Blank, Christian / Hoeller, Christoph / Bar-Sela, Gil / Barrow, Catherine / Wolter, Pascal / Zhou, Honghong / Emancipator, Kenneth / Jensen, Erin H / Ebbinghaus, Scot / Ibrahim, Nageatte / Daud, Adil. ·Crown Princess Mary Cancer Centre, Westmead Hospital, Sydney, NSW, Australia; Blacktown Hospital, Blacktown, NSW, Australia; Melanoma Institute Australia, Sydney, NSW, Australia; School of Medicine, University of Sydney, Sydney, NSW, Australia. Electronic address: Matteo.carlino@sydney.edu.au. · Melanoma Institute Australia, Sydney, NSW, Australia; Department of Medical Oncology and Translational Research, University of Sydney, Sydney, NSW, Australia; Royal North Shore Hospital, Sydney, NSW, Australia; Mater Hospital, Sydney, NSW, Australia. Electronic address: georgina.long@sydney.edu.au. · Department of Dermatology, University Hospital Essen, Essen, Germany; German Cancer Consortium, Heidelberg, Germany. Electronic address: Dirk.Schadendorf@uk-essen.de. · Department of Oncology, Gustave Roussy, Villejuif, France; Paris-Sud University, Orsay, France. Electronic address: Caroline.Robert@igr.fr. · Department of Medicine, University of California, Los Angeles, Los Angeles, CA, USA. Electronic address: aribas@mednet.ucla.edu. · Department of Dermatology, Medical University of Graz, Graz, Austria. Electronic address: erika.richtig@medunigraz.at. · Department of Clinical Cancer Research, Oslo University Hospital, Oslo, Norway. Electronic address: marnya@ous-hf.no. · Unit of Investigational Cancer Drugs, Instituto Oncologico Fundación Arturo López Pérez, Santiago, Chile. Electronic address: oncodemia@yahoo.com. · Division of Hematology/Oncology, University of Pittsburgh, Pittsburgh, PA, USA. Electronic address: tarhiniaa@upmc.edu. · Division of Immunology, Netherlands Cancer Institute, Amsterdam, Netherlands. Electronic address: c.blank@nki.nl. · Department of Dermatology, Medical University of Vienna, Vienna, Austria. Electronic address: christoph.hoeller@meduniwien.ac.at. · Division of Oncology, Rambam Health Care Campus, Haifa, Israel. Electronic address: g_barsela@rambam.health.gov.il. · Wellington Blood and Cancer Centre, Wellington Hospital, Wellington, New Zealand. Electronic address: Catherine.Barrow@ccdhb.org.nz. · Leuven Cancer Institute, University Hospitals Leuven, Leuven, Belgium. Electronic address: pascalwolter@hotmail.com. · Department of BARDS, Merck & Co., Inc., Kenilworth, NJ, USA. Electronic address: honghongz@gmail.com. · Companion Diagnostics, Merck & Co., Inc., Kenilworth, NJ, USA. Electronic address: kenneth.emancipator@merck.com. · LDS - Medical Communications, Merck & Co., Inc., North Wales, PA, USA. Electronic address: erin_jensen2@merck.com. · Department of Clinical Oncology, Merck & Co., Inc., North Wales, PA, USA. Electronic address: scot_ebbinghaus@merck.com. · Department of Clinical Oncology, Merck & Co., Inc., North Wales, PA, USA. Electronic address: nageatte.ibrahim@merck.com. · University of California, San Francisco, San Francisco, CA, USA. Electronic address: adaud@medicine.ucsf.edu. ·Eur J Cancer · Pubmed #30096704.

ABSTRACT: BACKGROUND: Predictive biomarkers of patients likely to benefit from anti-programmed death 1 inhibitor therapy have clinical relevance. We examined whether line of therapy or tumour programmed death ligand 1 (PD-L1) expression affects the efficacy and safety of pembrolizumab, compared with ipilimumab, in advanced melanoma. METHODS: Of 834 patients enrolled in the randomised, open-label phase III KEYNOTE-006 study, 833 were included in this analysis. Patients were randomly assigned 1:1:1 to receive pembrolizumab 10 mg/kg every 2 or 3 weeks (for 24 months) or ipilimumab 3 mg/kg every 3 weeks (for four doses) until disease progression/intolerable toxicity. This analysis evaluated progression-free survival (PFS), overall survival (OS) and objective response rate (ORR). Data cut-off: 03 November 2016. RESULTS: Of the patients, 60.3% were male, 65.9% were treatment naive and 80.6% had PD-L1-positive tumours (median follow-up was 33.9 months). Twenty-four-month survival rates were higher with pembrolizumab than with ipilimumab in treatment-naive (PFS 31.0% versus 14.6%; OS 58.0% versus 44.7%) and previously treated patients (PFS 25.7% versus 11.3%; OS 49.2% versus 37.9%). Twenty-four-month survival rates were higher with pembrolizumab than with ipilimumab in patients with PD-L1-positive tumours (PFS 33.2% versus 13.1%; OS 58.4% versus 45.0%) and similar in PD-L1-negative tumours (PFS 14.9% versus NR [no data at 24 months for a PFS estimate]; OS 43.6% versus 31.8%). Safety of pembrolizumab by subgroup was consistent with previous reports. CONCLUSIONS: Findings support pembrolizumab monotherapy as standard of care in patients with advanced melanoma, regardless of first- or second-line therapy or PD-L1 status. CLINICALTRIALS. GOV IDENTIFIER: NCT01866319.

3 Clinical Trial Programmed Death-Ligand 1 Expression and Response to the Anti-Programmed Death 1 Antibody Pembrolizumab in Melanoma. 2016

Daud, Adil I / Wolchok, Jedd D / Robert, Caroline / Hwu, Wen-Jen / Weber, Jeffrey S / Ribas, Antoni / Hodi, F Stephen / Joshua, Anthony M / Kefford, Richard / Hersey, Peter / Joseph, Richard / Gangadhar, Tara C / Dronca, Roxana / Patnaik, Amita / Zarour, Hassane / Roach, Charlotte / Toland, Grant / Lunceford, Jared K / Li, Xiaoyun Nicole / Emancipator, Kenneth / Dolled-Filhart, Marisa / Kang, S Peter / Ebbinghaus, Scot / Hamid, Omid. ·Adil I. Daud, University of California, San Francisco, San Francisco · Antoni Ribas, University of California, Los Angeles · Omid Hamid, The Angeles Clinic and Research Institute, Los Angeles · Charlotte Roach and Grant Toland, Dako North America, Carpinteria, CA · Jedd D. Wolchok, Memorial Sloan Kettering Cancer Center, New York, NY · Wen-Jen Hwu, The University of Texas MD Anderson Cancer Center, Houston · Amita Patnaik, South Texas Accelerated Research Therapeutics, San Antonio, TX · Jeffrey S. Weber, H. Lee Moffitt Cancer Center, Tampa · Richard Joseph, Mayo Clinic, Jacksonville, FL · F. Stephen Hodi, Dana-Farber Cancer Institute, Boston, MA · Tara C. Gangadhar, Abramson Cancer Center at the University of Pennsylvania, Philadelphia · Hassane Zarour, University of Pittsburgh, Pittsburgh, PA · Roxana Dronca, Mayo Clinic, Rochester, MN · Jared K. Lunceford, Xiaoyun Nicole Li, Kenneth Emancipator, Marisa Dolled-Filhart, S. Peter Kang, and Scot Ebbinghaus, Merck & Co, Kenilworth, NJ · Caroline Robert, Gustave Roussy and Paris-Sud University, Villejuif, France · Anthony M. Joshua, Princess Margaret Cancer Centre, Toronto, ON, Canada · Richard Kefford, Crown Princess Mary Cancer Centre, Westmead Hospital and Melanoma Institute Australia · Richard Kefford, Macquarie University · and Richard Kefford and Peter Hersey, University of Sydney, Sydney, NSW, Australia. ·J Clin Oncol · Pubmed #27863197.

ABSTRACT: Purpose Expression of programmed death-ligand 1 (PD-L1) is a potential predictive marker for response and outcome after treatment with anti-programmed death 1 (PD-1). This study explored the relationship between anti-PD-1 activity and PD-L1 expression in patients with advanced melanoma who were treated with pembrolizumab in the phase Ib KEYNOTE-001 study (clinical trial information: NCT01295827). Patients and Methods Six hundred fifty-five patients received pembrolizumab10 mg/kg once every 2 weeks or once every 3 weeks, or 2 mg/kg once every 3 weeks. Tumor response was assessed every 12 weeks per Response Evaluation Criteria in Solid Tumors (RECIST) v1.1 by independent central review. Primary outcome was objective response rate. Secondary outcomes included progression-free survival (PFS) and overall survival (OS). Membranous PD-L1 expression in tumor and tumor-associated immune cells was assessed by a clinical trial immunohistochemistry assay (22C3 antibody) and scored on a unique melanoma (MEL) scale of 0 to 5 by one of three pathologists who were blinded to clinical outcome; a score ≥ 2 (membranous staining in ≥ 1% of cells) was considered positive. Results Of 451 patients with evaluable PD-L1 expression, 344 (76%) had PD-L1-positive tumors. Demographic and staging variables were equally distributed among PD-L1-positive and -negative patients. An association between higher MEL score and higher response rate and longer PFS (hazard ratio, 0.76; 95% CI, 0.71 to 0.82) and OS (hazard ratio, 0.76; 95% CI, 0.69 to 0.83) was observed ( P < .001 for each). Objective response rate was 8%, 12%, 22%, 43%, 57%, and 53% for MEL 0, 1, 2, 3, 4, and 5, respectively. Conclusion PD-L1 expression in pretreatment tumor biopsy samples was correlated with response rate, PFS, and OS; however, patients with PD-L1-negative tumors may also achieve durable responses.

4 Article Development of a Prototype Immunohistochemistry Assay to Measure Programmed Death Ligand-1 Expression in Tumor Tissue. 2016

Dolled-Filhart, Marisa / Locke, Darren / Murphy, Tiffany / Lynch, Frank / Yearley, Jennifer H / Frisman, Dennis / Pierce, Robert / Weiner, Russell / Wu, Dianna / Emancipator, Kenneth. ·From the Departments of Molecular Biomarkers and Diagnostics (Drs Dolled-Filhart, Pierce, Weiner, Wu, and Emancipator) and Profiling and Expression (Dr Yearley), Merck & Co, Inc, Kenilworth, New Jersey · the Departments of Early Clinical & Translational Research, Clinical Histochemistry (Dr Locke), Research and Clinical Client Services (Dr Murphy), and Operations and Client Services (Dr Lynch), QualTek Molecular Laboratories, Newtown, Pennsylvania · and the Department of Pathology, Eisenhower Medical Center, Rancho Mirage, California (Dr Frisman). Dr Locke is now with Bristol-Myers Squibb, Princeton, New Jersey · Dr Pierce is now with OncoSec Medical, Inc, San Diego, California · Dr Weiner is now with Daiichi Sankyo, Edison, New Jersey · and Dr Wu is currently at Janssen Research & Development, Spring House, Pennsylvania. ·Arch Pathol Lab Med · Pubmed #27788043.

ABSTRACT: CONTEXT: - With the abundance of therapeutics targeted against programmed death receptor-1 and its ligand (PD-L1) that are currently approved or in clinical development, there is interest in identifying those patients most likely to respond to these drugs. Expression of PD-L1 may be an indicator of an initial and robust inflammatory response to the presence of tumor cells. Therefore, tumors that express PD-L1 may be the most likely to respond to therapies that interrupt the negative feedback mechanism that leads to PD-L1 upregulation. OBJECTIVE: - To develop a prototype immunohistochemistry assay using the anti-PD-L1 antibody clone 22C3. DESIGN: - The assay was developed and optimized using commercially available reagents and archival tumor-bank tissue. RESULTS: - The optimized immunohistochemistry method had high precision and reproducibility. Using the prototype assay in 142 non-small cell lung cancer and 79 melanoma archival tumor-bank tissue samples, PD-L1 staining was observed at the plasma membrane of nucleated tumor and nontumor cells and, in some cases, as a distinct lichenoid pattern at the tumor-stroma border. Using a preliminary scoring method, 56% (80 of 142) of non-small cell lung cancer and 53% (42 of 79) of melanoma samples were defined as PD-L1 CONCLUSIONS: - The immunohistochemistry assay using the anti-PD-L1 antibody 22C3 merits further investigation in clinical trials and prevalence assessments to further understand the prognostic and predictive value of PD-L1 expression in cancer.

5 Minor PD-L1 expression and survival among melanoma patients treated with standard immunotherapy or chemotherapy. 2017

Steiniche, T / Vestergaard Danielsen, A / Wang, Z / Feng, Y / Switten Nielsen, P / Bastholt, L / Schmidt, H / Svane, I M / Dolled-Filhart, M / Emancipator, K / Weiner, R / Busch-Sørensen, M / Zhou, W. ·Institute of Pathology, Aarhus University Hospital, Aarhus, Denmark. · Merck Research Laboratories, MSD China, Beijing, China. · Merck Research Laboratories, Merck & Co., Inc., Kenilworth, NJ, USA. · Department of Oncology, Odense University Hospital, Odense, Denmark. · Department of Oncology, Aarhus University Hospital, Aarhus, Denmark. · Department of Oncology, Herlev Hospital, Herlev, Denmark. · Merck Research Laboratories, MSD Denmark, Copenhagen, Denmark. ·J Eur Acad Dermatol Venereol · Pubmed #28045203.

ABSTRACT: -- No abstract --