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Origins and Organization of PD-1: PD-L1 Interactions in Classical Hodgkin lymphoma
Scott Rodig MD, PhD
Center for Immuno-Oncology, Dana-Farber Cancer Institute Department of Pathology, Brigham & Women’s Hospital
Harvard Medical School
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Disclosure Information Scott Rodig MD
I have the following financial relationships to disclose: Scientific Advisory Board: PerkinElmer Speaker’s Bureau for: Bristol-Myers-Squibb Grant/Research support from: Bristol-Myers-Squibb, MedImmune Honoraria from: Bristol-Myers-Squibb
- and - I will not discuss off label use and/or investigational use in my
presentation.
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Definition: Malignancy of B-cell lineage with a unique
clinical presentation, histomorphology, phenotype, and genetics.
Diagnosis: Identification of Reed-Sternberg (HRS) cells in a
mixed inflammatory background 20-30% are EBV+ Treatment: ABVD, Stanford V, BEACOPP Outcome: Cure rate approx. 80%. But survival for relapsed/refractory disease is
very low (20%)
Classical Hodgkin Lymphoma
ABVD=adriamycin, bleomycin, vinblastine, dacarbazine; BEACOPP=bleomycin, etoposide, adriamycin,
cyclophosphamide, vincristine, procarbazine, prednisone; EBV=Epstein-Barr virus.
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PART I: The HRS Cell
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9p24.1 Amplicon Block in cHL
Green et al, Blood 2010; 116:3268
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9p24.1 Amplicon Block in cHL
PD-L1
Green et al, Blood 2010; 116:3268
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PD-1 :PD-L1 Signaling
PDL1
HRS cell
Chen BJ et al. Clin Cancer Res. 2013; 19:3462-3473.
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Antigen Presenting Cell (APC)
T Cell
Adapted from: Freeman G et al., Proc Natl Acad Sci 2008
PD-1 :PD-L1 Signaling
T-cell Activation
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Tumor Cell
T Cell
Adapted from: Freeman G et al., Proc Natl Acad Sci 2008
PD-1 :PD-L1 Signaling
T-cell Activation
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Antigen Presenting Cell (APC)
T Cell
Adapted from: Freeman G et al., Proc Natl Acad Sci 2008
PD-1 :PD-L1 Signaling
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Antigen Presenting Cell (APC)
T Cell
Adapted from: Freeman G et al., Proc Natl Acad Sci 2008
PD-1 :PD-L1 Signaling
T-cell Activation
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Tumor cell
T Cell
Adapted from: Freeman G et al., Proc Natl Acad Sci 2008
PD-1 :PD-L1 Signaling
T-cell Activation
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Tumor cell
T Cell
Adapted from: Freeman G et al., Proc Natl Acad Sci 2008
PD-1 :PD-L1 Signaling
T-cell Activation
Nivolumab (Opdivo)
Pembrolizumab (Keytruda)
Atezolizumab; anti-PDL1 (Tecentriq) PD-L1
PD-L2
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Tumor cell
T Cell
Adapted from: Freeman G et al., Proc Natl Acad Sci 2008
PD-1 :PD-L1 Signaling
T-cell Activation
Nivolumab (Opdivo)
Pembrolizumab (Keytruda)
Atezolizumab; anti-PDL1 (Tecentriq) PD-L1
PD-L2
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Robust PD-L1 Expression is characteristic of Reed-Sternberg cells in Primary cHL
1. 87% of primary cHL show PD-L1 expression by the HRS cells 2. 11% of primary non-Hodgkin lymphomas show PD-L1 expression
by the malignant B-cells
DLBCL
Chen BJ et al. Clin Cancer Res. 2013; 19:3462-3473.
HRS cells
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1. 108 Patients enrolled in a trial of Stanford V (chemotherapy +/- radiation)
2. Uniform treatment and clinical/ radiological follow-up
3. We performed FISH and IHC analysis on FFPE diagnostic biopsy samples collected as part of the trial
PD
L1/
PAX
5
Roemer M et al. JCO. 2016
PD-L1 and PD-L2 Genetic Alterations Define Classical Hodgkin Lymphoma and Predict Outcome
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Roemer M et al. JCO. 2016
PD-L1 and PD-L2 Genetic Alterations Define Classical Hodgkin Lymphoma and Predict Outcome
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Frequency of 9p24.1 Genetic Alterations in cHL Cohort
Alterations of 9p24 is a defining characteristic of HRS cells in cHL
Roemer M et al. JCO. 2016
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Highest PD-L1 Expression among HRS cells is Correlated with the Lowest Residual Disomy for PD-L1/ PD-L2
Roemer M et al. JCO. 2016
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Progression-Free Survival (PFS) by 9p24.1 Genetic Alterations
1. Significant differences in outcome (PFS) by 9p24.1 genetic alteration -
2. PD-L1/PD-L2 amplification most unfavorable, p<0.001
3. Results suggest a role for immune evasion in the progression of cHL and response
to chemotherapy Roemer M et al. JCO. 2016
Clinical Risk Factors Genetic Alterations
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1. Gain of 9p24.1 is a genetic basis for PD-Ligand expression by Reed-Sternberg cells.
2. Gain of 9p24.1 is a defining characteristic of Reed-Sternberg cells.
3. PD-L1 and PD-L2 protein expression is promoted by multiple, re-enforcing mechanisms and highly expressed by Reed-Sternberg cells in the majority of cHLs
4. PD1 Blockade is likely to be more effective than PD-L1 blockade in cHL due to co-expression of PD-L2
Rationale for PD-1 Blockade in cHL
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Ansell S et al. N Engl J Med. 2015;372:311-319.PD-1=programmed death receptor. Ansell S et al. N Engl J Med. 2015;372:311-319.
Nivolumab
ORR= 87%
Pembrolizumab
ORR= 65%
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Cytogenetics Immunohistochemistry
Case PD-L1/PD-L2 copy
gain PD-L1 in HRS PD-L2 in HRS pSTAT3 in HRS
1 + + + +
2 + + + +
3 + + + +
4 + + + +
5 + + + +
6 + + + +
7 + + + +
8 + + + +
9 + + + +
10 + + + +
PD-L1/PD-L2 Copy Number Alterations and Protein Expression
Ansell et al, NEJM 2015; 372:311
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Phase 1: Durability of Response in R/R cHL
Ansell S et al. ASH oral presentation, 2015.
cHL (n = 23) 76 Weeks
Overall response, n (%)
20 (87)
24-week progression-free survival, %
87%
Duration of response, median (range)
NR (18–82+)
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Phase 2: PD-1 Blockade in R/R cHL
•80 patients •Short clinical follow-up
Younes et al., Lancet Onc, 2016
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Phase 2: PD-1 Blockade in R/R cHL
Younes et al., Lancet Onc, 2016
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Phase 2: PD-1 Blockade in R/R cHL
Younes et al., Lancet Onc, 2016
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Conclusions: PD-1 Blockade in R/R cHL
1. Gain of 9p24.1 and near universal expression of PD-L1 and PD-L2 provides a biological rationale for the efficacy of PD-1 blockade in patients with relapsed/ refractory cHL. 2. PD-1 blockade is effective treatment for patients with relapsed/ refractory cHL
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Conclusions: PD-1 Blockade in R/R cHL
1. Gain of 9p24.1 and near universal expression of PD-L1 and PD-L2 provides a biological rationale for the efficacy of PD-1 blockade in patients with relapsed/ refractory cHL. 2. PD-1 blockade is effective treatment for patients with relapsed/ refractory cHL
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9p24.1 Alterations in NHL
1. Primary mediastinal (thymic) large B-cell lymphoma
2. Primary CNS lymphoma
3. Primary Testicular lymphoma
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9p24.1 Alterations in NHL
1. Primary mediastinal (thymic) large B-cell lymphoma
Shi et al. AJSP., 2014.
PD
L2
PDL2
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9p24.1 Alterations in Solid Tumors
Howitt et al. JAMA Oncol., 2016.
PD
L1
Cervical cancer
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PART II: The Microenvironment
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PART II: The Microenvironment
PD-L1
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DAPI CD30 CD68 CD163 pSTAT3 PD-L1
Carey et al. Submitted
Quantitative Analysis of the Tumor Microenvironment in cHL
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PD-L1 co-localizes with CD30+ HRS cells and with CD68+ TAMs
Carey et al. Submitted
Quantitative Analysis of the Tumor Microenvironment in cHL
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The majority of PD-L1 in cHL is derived from CD68+ TAMs not HRS cells
TAMs and HRS cells Contribute to the Pool of PD-L1 in cHL
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PD-L1+ TAMs form an Immuno-Protective Niche for HRS cells in Classical Hodgkin Lymphoma
CHL is characterized by multiple, re-enforcing mechanisms that ensure a tolerant immune microenvironment in the immediate vicinity of HRS cells
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Acknowledgements
Brigham and Women’s Hospital Christopher Carey Evisa Gjini Mike Lipschitz Dan Gusenleitner Christine Pak Sara Abdelrahman Benjamin Chen Azra Ligon VU University Medical Center Daphne de Jong
Dana Farber Cancer Institute Margaret Shipp
Marit Roemer Bjeorn Chapuy Michael Green Donna Neuberg Center for Immuno-Oncology Steve Hodi Gordon Freeman Stanford University Ranjana Advani Yaso Natkunam
Perkin Elmer, Inc Ed Stack