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Inmunoterapia en Tumores Diges1vos Santander, 14 y 15 Julio 2016 Maria Alsina, MD Hospital Universitari Vall d’Hebron

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Inmunoterapia  en  Tumores  Diges1vos  Santander,  14  y  15  Julio  2016  

 Maria  Alsina,  MD  

Hospital  Universitari  Vall  d’Hebron  

Outline  •  The  Immune  System  •  Immunotherapy  in  GI  Tumors  

– Gastric  Cancer  – Colorectal  Cancer  

•  Challenges  – PaKerns  of  response  &  AEs  

•  Conclusions  

Outline  •  The  Immune  System  •  Immunotherapy  in  GI  Tumors  

– Gastric  Cancer  – Colorectal  Cancer  

•  Challenges  – PaKerns  of  response  &  AEs  

•  Conclusions  

Tumors  are  complex  systems  • Successful  growth  of  tumors  and  metastasis  is  not  determined  solely  by  geneQc  alteraQons  in  tumor  cells,  but  also  by  the  advantage  that  such  mutaQons  confer  in  the  environment.  

• Tumor  formaQon  involves  the  co-­‐evoluQon  of  neoplasQc  cells  together  with  extracellular  matrix,  tumor  vasculature  and  immune  cells.    

Tumor Antigen Transport

Lymphocyte trafficking

Junttila Nature 2013

Acquired  capaciQes  of  cancer:  phenotype  

Avoiding immune destruction

Evading growth suppressors

Enabling replicative immortality

Tumor- promoting inflammation

Activating invasion & metastasis

Genome instability mutation

Resisting cell death

Deregulating cellular energetics

Sustaining proliferative signaling

Inducing angiogenesis

Hanahan & Weinberg Cell 2011

EGFR  inhibitors  

Aerobic  glycolysis  inhibitors  

Proapopto1c  BH3  mime1cs  

PARP  inhibitors  

Inhibitors  of  HGF/c-­‐Met  

Selec1ve  an1-­‐inflammatory  drugs  

Telomerase  inhibitors  

Cyclin-­‐dependent  kinase  inhibitors  

Inhibitors  of  VEGF  signaling  

Immunotherapy  

Key  aspects  of  the  Immune  System  

Hanahan & Weinberg Cell 2011; Dunn Nat Rev Immunol 2006 Swann & Smyth J Clin Invest 2007; Prendergast Oncogene 2008; Mapara & Sykes J Clin Oncol 2004

•  The  immune  system  recognises  and  destroys  tumor  cells  

•  Key  features  of  the  immune  response:  1.  Memory  2.  Specificity  3.  Adaptability  

Immunotherapy has reset survival expectations

 0  12  24  36  48  60  72  84  96  108  120  0.0  

0.2  

0.4  

0.6  

0.8  

1.0  

 4846  1786  612  392  200  170  120  26  15  5  0  

Months  

Pooled  OS  data  for  1,861  paQents  from  10  prospecQve  and  two  retrospecQve  studies  Median  OS,  months:  9.5  months  (95%  CI  9.0–10.0)  

3-­‐year  OS  rate:  21%  (95%  CI  20–22)  

Ipilimumab  Censored  

Ipilimumab  No  at  risk:  

Schadendorf J Clin Oncol 2015

Overall  survival  

Ipilimumab  was  the  first  immune  checkpoint  inhibitor    to  demonstrate  clinical  benefit  in  stage  IV  melanoma  paQents  

The  immune  cycle  in  cancer  

7.  Killing  of  cancer  cells  

An1-­‐PD1  An1-­‐PDL1  An1-­‐CTLA-­‐4  

An1-­‐CD137  (agonist)  An1-­‐OX40  (agonist)  An1-­‐CD27  (agonist)  

IL-­‐2  IL-­‐12  

Tumor  

Lymph  node  

Blood  vessel  

1.   Release  of  cancer    cell  an1gens  

2.  Cancer  an1gen    presenta1on  

3.  Priming  and  ac1va1on  

5.  Infiltra1on  of  T  cells  into  tumors    

6.  Recogni1on  of  cancer  cells  by  T  cells  

4.  Trafficking  of  T  cells  to  tumors  

Vaccines  IFN-­‐α  GM-­‐CSF  

An1-­‐CD40  (agonist)  TLR  agonist

     

Chemotherapy  Radia1on  therapy  Targeted  therapy  

An1-­‐VEGF/VEGFR  

CARs  

An1-­‐PDL1  An1-­‐PD1  

IDO  inhibitors  

Chen & Mellman Immunity 2013

The  immune  cycle  in  cancer  

7.  Killing  of  cancer  cells  

An1-­‐PD1  An1-­‐PDL1  An1-­‐CTLA-­‐4  

An1-­‐CD137  (agonist)  An1-­‐OX40  (agonist)  An1-­‐CD27  (agonist)  

IL-­‐2  IL-­‐12  

Tumor  

Lymph  node  

Blood  vessel  

1.   Release  of  cancer    cell  an1gens  

2.  Cancer  an1gen    presenta1on  

3.  Priming  and  ac1va1on  

5.  Infiltra1on  of  T  cells  into  tumors    

6.  Recogni1on  of  cancer  cells  by  T  cells  

4.  Trafficking  of  T  cells  to  tumors  

Vaccines  IFN-­‐α  GM-­‐CSF  

An1-­‐CD40  (agonist)  TLR  agonist

     

Chemotherapy  Radia1on  therapy  Targeted  therapy  

An1-­‐VEGF/VEGFR  

CARs  

An1-­‐PDL1  An1-­‐PD1  

IDO  inhibitors  

Chen & Mellman Immunity 2013

T  cell  acQvaQon  requirements  

1.  AnQgen  presentaQon  –  MHC  complex  

2.  Co-­‐sQmulatory  signal  –  B7  –  CD28  

3.  Cytokines  

Ø  Inhibitory  signal  –  B7  –  CTLA4  –  PDL-­‐1  –  PD-­‐1  

Amorena Science 1978, Mueller J Immunol 1989, Walunas Immunity 1994, Krummel J Exp Med 1995, Dong Nat Med 2002; Keir Annu. Rev. Immunol. 2008

The  immune  checkpoint  targetable  receptors/ligands

Mellman  Nature  2011  

T  cell  targets  for  modulaQng  acQvity  

CD28 OX40

GITR CD137

CD27

HVEM

CTLA-4 PD-1 TIM-3 BTLA

VISTA

LAG-3

Activating Receptors

Inhibitory Receptors

T cell stimulation

T cell

Agonistic Antibodies

Blocking Antibodies

Frequency  of  geneQc  somaQc  mutaQons  in  cancer  

Altered  proteins  contain  new  epitopes  for  immune  recogniQon,    providing  a  common  denominator  for  cancer  immunotherapy  

Rhabdo

id  tu

mou

r  

Ewing  sarcom

a  

Thyroid  

Acute  myeloid  

leukaemia  

Med

ulloblastoma  

Carcinoid  

Neu

roblastoma  

Prostatre  

Chronic  lymph

ocyQc  

leukaemia  

Low-­‐grade

 glioma  

Breast  

Pancreas  

MulQp

le  m

yeloma  

Kidn

ey  clear  cell  

Kidn

ey    

papillary  cell  

Ovaria

n  

Glioblastoma  

mulQforme  

Cervical  

Diffu

se  large  B-­‐cell  

lymph

oma  

Head  and

 neck  

Colorectal  

Esop

hageal  

aden

ocarcino

ma  

Stom

ach  

Bladde

r  

Lung  ade

no-­‐

carcinom

a  Lung  sq

uamou

s  cell  

carcinom

a  

Melanom

a  0.01  

0.1  

1  

10  

100  

1000  

SomaQ

c  mutaQ

on  freq

uency  (/Mb)  

 22  20  52  134  26  23  81  227  91  57  121  13  63  214  11  394  219  20  49    181  231  76  88  35  335  179  121      

C→T C→A C→G  T→C  T→A  T→G  

Lawrence Nature 2013

No  at  Risk  

50%  

20%  

22%  

9%  

TCGA Nature 2014

TILs  are  predicQve  of  overall  survival  in  GC  

Lee Br J Cancer 2008

Pooled  OS  data  for  220  paQents  with  gastric  cancer  surgically  resected  

Guinney J, Dienstmann R et al. Nat Med 2015

Outline  •  The  Immune  System  •  Immunotherapy  in  GI  Tumors  

– Gastric  Cancer  – Colorectal  Cancer  

•  Challenges  – PaKerns  of  response  &  AEs  

•  Conclusions  

•  Pembrolizumab  •  Nivolumab  +/-­‐  Ipi  •  Avelumab  •  Ipilimumab  

Pembrolizumab  

•  KEYNOTE  0121  ü Ph  1b  with  a  GC  cohort  (39  pts)  

•  KEYNOTE  0592  ü Ph  II  1st  Line  ü Preliminary  safety  data    

1.  Muro  Lancet  Oncol  2016  2.  Fuchs  ASCO  2016  

Screening:  65  of  162  (40%)  paQents  assessed  for  PD-­‐L1  expression  had  PD-­‐L1-­‐posiQve  tumors  Pa1ents:  19  paQents  from  Asia  and  20  paQents  from  the  rest  of  the  world    Treatment:  10  mg/kg  IV  Q2W  Response  assessment:  Performed  every  8  weeks  per  RECIST  v1.1  by  central  radiology  review    aAssessed  in  archival  tumor  samples  using  a  prototype  IHC  assay  (22C3  anQbody).  PosiQvity  defined  as  PD-­‐L1  staining  in  stroma  or    ≥1%  of  tumor  cells.  

Patients •  Recurrent or metastatic

adenocarcinoma of the stomach or GEJ

•  ECOG PS 0-1 •  PD-L1–positive tumora

•  No active brain metastases

Pembrolizumab 10 mg/kg Q2W

Complete Response

Partial Response or Stable Disease

Confirmed Progressive Disease

Discontinuation Permitted

Treat for 24 months or until progression

or intolerable toxicity

Discontinue

KEYNOTE-­‐012:  Gastric  Cancer  Cohort  

Bang YJ et al. Proc ESMO GI 2015

Best  Overall  Response,  RECIST  v1.1  

Presented By Yung-Jue Bang at 2015 ASCO Annual Meeting

Change  From  Baseline  in  Target  Lesions  

aOnly  paQents  with  measurable  disease  per  RECIST  v1.1  by  central  review  at  baseline  and  at  least  1  postbaseline  tumor  assessment  were  included  (n  =  32).      Analysis  cutoff  date:  March  23,  2015.  

53.1%  of  pa1ents  experienced  a  decrease  from  

baseline  

–100

–80

–60

–40

–20

0

20

40

60

80

100

Chan

ge  From  Bassline,  %  

Maximum  Change  

Asia  

Rest  of  world  

Chan

ge  From  Baseline,  %  

0 8 16 24 32 40 48 56 64 –100

–75

–50

–25

0

25

50

75

100

125

150

Time, weeks

Change  Over  Time  

Asia  

Rest  of  world  

Bang YJ et al. Proc ESMO GI 2015

Kaplan-­‐Meier  EsQmates  of  Survival  

•  OS  (ITT)  –  6-­‐months  OS  rate:  66%  –  Median  OS:  11m    (95%  CI,  5.7-­‐NR)  

•  Median  response  duraQon  –  40w  (20+  to  48+)  

Analysis  cutoff  date:  March  23,  2015.  

OS  

0  

10  

20  

30  

40  

50  

60  

70  

80  

90  

100  

0   2   4   6   8   10   12   14   16  Time,  months  

Overall  Survival,  %

 

n  at  risk  

17   15   12   11   10   8   1   0   0  Asia  

19   16   13   11   8   7   6   5   0  ROW  

Asia  

Rest  of  world    

Bang YJ et al. Proc ESMO GI 2015

AssociaQon  between  efficacy  and  PD-­‐L1  expression  

•  Preliminary  evidence  of  a  relaQonship  between  PD-­‐L1  expression  and  efficacy  in  this  preselected  populaQon  

•  Data  suggest  a  relaQvely  low  cut-­‐off  is  sufficient  to  detect  most  responders  

Bang YJ et al. Proc ESMO GI 2015

Assessing  PD-­‐L1  Expression  as  a  ConQnuous  Variable  

Analysis  of  Gene  Expression  Signatures NanoString  Analysis  of  19  biopsies  (Discovery  Set)  and  62  biopsies  (ValidaQon  Set)  from  KEYNOTE-­‐001  

FFPE  Tumor  Tissue  Collected  at  Baseline    Before  Receiving  Pembrolizumab  

NanoString  Placorm  

FFPET block or unstained slides (~27 patients)

RNA profiling (baseline assessment)•Affymetrix platforms•Already being performed with Covance

Depending on DNA yield (200 ng per slide?)• Affy SNP 6.0 CNV• Genotyping (Sequenom); should see Kras mutations etc.• To be initiated

MET IHC (baseline assessment)MET amplification status (baseline for only responders)• Already being performed with Ventana

(N=3)

(N=4)

(N=3)

Phase I

Gene    Expression  Data  

680  Genes  on  Custom  Plaqorm  -­‐  Immune  Focused  -­‐  

RNA  

Discover  Genes  &  Signatures    Associated  

With    An1–PD-­‐1  Response  

• Most samples yield >20 ng of usable RNA per slide

• 50 ng of RNA required for 1 assay

Ribas A et al. Abstract 3001. Presented at the 2015 ASCO Annual Meeting; May 29-June 2, 2015; Chicago, IL.

IdenQfied  Immune-­‐Related  Gene  Expression  Signatures  

•  4  immune-­‐related  gene  expression  signatures  were  established  in  melanoma  paQents  treated  with  pembrolizumab  in  KEYNOTE-­‐0011,2  

•  Signatures  were  independently  tested  in  gastric  cancer  paQents  from  KEYNOTE-­‐0122  

–  ORR  in  the  33  evaluable  paQents  was  30%  

1. Ribas A et al. Abstract 3001. Presented at the 2015 ASCO Annual Meeting; May 29-June 2, 2015; Chicago, IL. 2. Shankaran V et al. Abstract 3026. Presented at the 2015 ASCO Annual Meeting; May 29-June 2, 2015; Chicago, IL.

Biology  of  Evaluated  Signatures1  

AssociaQon  of  Immune-­‐Related  Gene  Expression  Signatures  and  ORR  and  PFS  

Signature

Nominal 1-Sided P Valuea

ORRb PFSb

IFN-γ (6 gene) 0.077 0.032

TCR signaling (13 gene)

0.034 0.024

Expanded immune (18 gene)

0.062 0.049

De novo (33 gene) 0.068 0.037

aFrom logistic (ORR) or Cox (PFS) regression, with signature scores as a continuous variable. bAssessed per RECIST v1.1 by investigator review. Shankaran V et al. Abstract 3026. Presented at the 2015 ASCO Annual Meeting; May 29-June 2, 2015; Chicago, IL.

•  PotenQal  diagnosQc  performance  of  IFN-­‐γ  signature  

•  NegaQve  predicQve  value  =  92%  •  PosiQve  predicQve  value  =  45%  •  Prevalence  =  61%  

AssociaQon  of  IFN-­‐γ  Signature    and  PFSb  

Patients with low values of the signature do not show delays in progression

PFS,

day

s Increasing Gene Expression Levels

IFN-γ Signature Score

Other Partial Response Stable Disease

1.5 2.0 2.5

100

200

300

KEYNOTE  059  •  Ph  2  Study  in  1st  Line  GC/GEJ  pts  

•  Pembro  200  mg  +  5-­‐FU  800  mg/m2  (or  capecitabine  1000  mg/m2  in  Japan)  +  cisplaQn  80  mg/m2  Q3W  for  6  cycles  →  Pembro  +  5-­‐FU  (or  capecitabine)  for  up  to  2y  

•  18  paQents  treated,  median  follow-­‐up  5.5  m  ü  No  treatment-­‐related  deaths  ü  1  pt  (6%)  disconQnued  treatment  

•  StomaQQs  unrelated  to  pembro  or  chemotherapy.  ü  7  pts  (39%)  G1-­‐2  AEs  aKributed  to  pembro  

•  Diarrhea,  dysgeusia,  hyperthyroidism,  nausea  (n  =  2  each)  ü  8  pts  (44%)  experienced  G1-­‐2  AEs  of  special  interest,  regardless  of  aKribuQon  

by  invesQgator  •  Hyperthyroidism,  hypothyroidism,  infusion-­‐related  reacQon,  pruritus,  vasculiQs.  

•  The  combinaQon  of  pembro,  cisplaQn,  and  5-­‐FU  has  a  manageable  safety  profile  as  first-­‐line  therapy  in  paQents  with  advanced  GC  

Nivolumab  +/-­‐  Ipi  (Checkmate  032)  •  Phase  I/II  with  a  GC/GEJ/EC  cohort  (160  pts)  

ü IrrespecQvely  of  PD-­‐L1  status  

•  3  different  schemes  of  treatment  

•  ORR  (1st  End  Point)  

Janjigian  ASCO  2016  

Nivo  3  mg/kg  Q2W  Nivo  1  mg/kg  +  ipi  3  mg/kg  Nivo  3  mg/kg  +  ipi  1  mg/kg  Q3W    

x  4  cycles   Nivo  3  mg/kg  Q2W  

Nivolumab  +/-­‐  Ipi  (Checkmate  032)  

Janjigian  ASCO  2016  

N3   N1+I3   N3+I1  

ORR   14%   26%   10%  

mOS  (m)  (95%  CI)   5.0  (3.4–12.4)   6.9  (3.6–NA)   4.8  (3.0–9.1)  

•  12%  of  pts  stopped  therapy  due  to  treatment  toxicity  •  Treatment-­‐related  serious  AEs  of  any  grade  and  Grade  3-­‐4  

occurred  in  10%  and  5%  (N3),  43%  and  35%  (N1+I3),  and  23%  and  15%  (N3+I1)  of  pts  ü 1  Grade  5  →  tumor  lysis  syndrome  (N3+I1)  

Avelumab  (JAVELIN)    •  Ph  1b  in  GC/GEJ  pts  

ü  IrrespecQvely  of  PD-­‐L1  status  

 •  Treatment-­‐related  adverse  events    

ü  Any  grade:  in  89  pts  (58.9%)  →  Infusion-­‐related  reacQon  (12.6%)  and  faQgue  (10.6%)  

ü  G3:  in  15  pts  (9.9%)  →  faQgue,  asthenia,  increased  GGT,  thrombocytopenia,  and  anemia  

ü  1  treatment-­‐related  death  (hepaQc  failure/autoimmune  hepaQQs)  

Chung  ASCO  2016  

2L  (n  =  22)   Mn  (n  =  52)  PD-­‐L1+  (n  =  11)   PD-­‐L1−  (n  =  11)   PD-­‐L1+  (n  =  20)   PD-­‐L1−  (n  =  32)  

ORR  %  (95%  CI)  18.2  

(2.3,  51.8)  9.1  

(0.2,  41.3)  10.0  

(1.2,  31.7)  3.1  

(0.1,  16.2)  

mPFS  w  (95%  CI)  6.3  

(5.4,  18.0)  10.4  

(4.1,  21.9)  17.6  

(6.0,  24.1)  11.6  

(5.7,  14.1)  

•  1st  Line  Maintenance  (89  pts)  •  2nd  Line  (62  pts)   Avelumab  10  mg/kg  IV  Q2W  

Ipilimumab  Mn  (Ph  II  Trial)  

•  1ary  EP:  irPFS  •  The  study  was  stopped  post-­‐interim  analysis    •  143  pts  screened  

•  Treatment-­‐related  adverse  events  occurred  in  41/57  (72%)  of  ipi  pts  and  25/45  (56%)  pts  on  acQve  BSC  ü Pruritus  (32%),  diarrhea  (25%),  faQgue  (23%),  and  rash  (18%)  

Moehler  ASCO  2016  

1st  Line  Ttx   •  Ipi  10  mg/kg  Q3W  x4  →  Ipi  10  mg/kg  Q12W  x3y  •  BSC  (≈  80%  chemotherapy)  

Ipilimumab  Mn  (Ph  II  Trial)  •  irPFS  similar  between  arms  (HR=1.44,  p=0.097)  •  median  OS  for  both  arms  ≈  1  yr  

Moehler  ASCO  2016  

Median  irPFS  (95%  CI)  ü  Ipi  2.92  (1.6  –  5.2)  ü  BSC  4.9  (3.5-­‐6.5)  

Early  progressors  lost  

When  the  immune  system  reacts,  it  reacts  well,  potenQally  even  in  re-­‐introducQon  or  2nd  L  

Ongoing  Phase  III  Clinical  Trials    Line   Study   N   Treatment  Arms   1ary  EP  

1st  Line  KEYNOTE-­‐062  NCT02494583  (TPS  4138)  

750  

Pembrolizumab  200mg  Q3W  vs  Pembro  +  CisplaQno  +  5-­‐FU/CPC  vs  Placebo  +  CisplaQno  +  5-­‐FU/CPC  

OS  PFS  (RECIST  1.1)  

CG  &  CUGE  PS  0-­‐1  PD-­‐L1+/HER2-­‐  StraQficaQon:  Europe/North  America/Australia  vs  Asia  vs  ROW  RECIST  1.1  &  irRECIST  

Mn  

JAVELIN  Gastric  100  NCT02625610  (TPS  4134)  

466  

FOLFOX/XELOX  x12  semanas,  luego:      Avelumab  10mg/kg  Q2W  vs  ConQnuar  FOLFOX/XELOX  

OS  PFS  

CG  &  CUGE  PS  0-­‐1  PD-­‐L1+  Exclusion  HER2+  RECIST  1.1  

2nd  Line  KEYNOTE-­‐061  NCT02370498  (TPS  4137)  

720  Pembrolizumab  200mg  Q3W  vs  Paclitaxel  

PFS  (RECIST  1.1)  &  OS  en  PD-­‐L1+  

CG  &  CUGE  PS  0-­‐1  No  molecular  selecQon  RECIST  1.1  &  irRECIST  

3rd  Line  

JAVELIN  Gastric  300  NCT02625623  (TPS4135)  

330  Avelumab  10mg/kg  Q2W  +  BSC  vs  Paclitaxel/Irinotencan/BSC  

OS  

CG  &  CUGE  PS  0-­‐1  No  molecular  selecQon  StraQficaQon:  Asia  vs  non  Asia  Exclusion  of  previous  immunother  RECIST  1.1  

Ongoing  Phase  I/II  Clinical  Tria

ls  ID   Ph   Strategy   Indication   Status  

NCT02443324   I   Pembrolizumab plus Ramucirumab   Specific cohort, 2nd or 3rd Line   Recruiting  

NCT02335411 (KEYNOTE 059)   II   Pembrolizumab in monotherapy or in combination

with CT   Different lines, HER2-neg   Recruiting  

NCT02563548   I   Pembrolizumab plus PEGPH20   Specific cohort, at least 2nd Line   Recruiting  

NCT01848834 (KEYNOTE 012)   I   Pembrolizumab   Specific cohort, refractory

setting   Active, not recruiting  

NCT02452424   I   Pembrolizumab plus PLX3397   Specific cohort, refractory setting   Recruiting  

NCT02318901   I/II   Pembrolizumab plus trastuzumab   Specific cohort, HER2-positive   Recruiting  

NCT02268825   I/II   Pembrolizumab plus FOLFOX   Specific cohort   Recruiting  

NCT02340975   II   Tremelimumab and/or durvalumab   Refractory setting   Recruiting  

NCT01585987   II   Ipilimumab vs FU/BSC   Manteinance after 1st Line   Completed  

NCT01928394   I/II   Nivolumab +/- ipilimumab   Specific cohort, refractory setting   Recruiting  

NCT02267343   I   Nivolumab   Refractory setting   Recruiting  

NCT02488759   I/II   Nivolumab   EBV-positive   Recruiting  

NCT01772004   I   Avelumab   Specific cohort, 3rd Line   Recruiting  

NCT01943461   I   Avelumab   2nd and 3rd Line, Japanesse and Asian   Recruiting  

NCT01633970   I   Atezolizumab montherapy or in combination with bevacizumab or CT   Basket   Recruiting  

NCT01375842   I   Atezolizumab   Basket   Recruiting  

NCT02471846   I   Atezolizumab and GDC-0919   Specific cohort, refractory setting   Recruiting  

Outline  •  The  Immune  System  •  Immunotherapy  in  GI  Tumors  

– Gastric  Cancer  – Colorectal  Cancer  

•  Challenges  – PaKerns  of  response  &  AEs  

•  Conclusions  

•  Pembrolizumab  •  Nivolumab  +  Ipilimumab  •  CobimeQnib  +  Atezolizumab  

•  Immunoscore  

Pembrolizumab  (KEYNOTE  016)  

Le DT et al. ASCO 2015, Le DT NEJM 2015

MMR-­‐deficient    CRC    

MMR-­‐proficient  

CRC    

MMR-­‐deficient    non-­‐CRC    

N   13   25   10  

ORR   62%   0%   60%  

DCR   92%   16%   70%  

200 400 600

-100-90-80-70-60-50-40-30-20-10

0102030405060708090

100 MMR-proficient CRCMMR-deficient CRCMMR-deficient non-CRC

Days%C

han

ge f

rom

Baseli

ne S

LD

Pembrolizumab  (KEYNOTE  016)  Progression-­‐Free  Survival  

CRC  Cohorts  

Mismatch-­‐repair  proficient  

Mismatch-­‐repair  deficient  

Mismatch-­‐repair  proficient  

Mismatch-­‐repair  deficient  

Overall  Survival  CRC  Cohorts  

 

Le DT et al. ASCO 2015, Le DT NEJM 2015

MMR-deficient MMR-proficient

0

500

1000

1500

Den

sity

of

intr

atu

mo

ral

CD

8+ T

cel

ls

MMR-deficient MMR-proficient

0

500

1000

1500

Den

sity

of

inva

sive

fro

nt

CD

8+ T

cel

ls

MMR-deficient MMR-proficient

0

20

40

60

80

100

PD

-L1

+ T

ILS

(%

)

MMR-deficient MMR-proficient

0

20

40

60

80

100

Inva

sive

fro

nt

PD

-L1

+ c

ells

(%

)

MMR-deficient MMR-proficient

0

20

40

60

80

100

PD

-L1

+ T

um

or

Cel

ls (

%)

P  =  0.07P  =  0.04

P  =  0.10 P  =  0.04

P  =  0.22

MMR-deficient MMR-proficient

0

500

1000

1500

Den

sity

of

intr

atu

mo

ral

CD

8+ T

cel

ls

MMR-deficient MMR-proficient

0

500

1000

1500

Den

sity

of

inva

sive

fro

nt

CD

8+ T

cel

ls

MMR-deficient MMR-proficient

0

20

40

60

80

100

PD

-L1+

TIL

S (

%)

MMR-deficient MMR-proficient

0

20

40

60

80

100

Inva

sive

fro

nt

PD

-L1

+ c

ells

(%

)

MMR-deficient MMR-proficient

0

20

40

60

80

100

PD

-L1+

Tu

mo

r C

ells

(%

)

P  =  0.07P  =  0.04

P  =  0.10 P  =  0.04

P  =  0.22

MMR-deficient MMR-proficient

0

500

1000

1500

Den

sit

y o

f in

tratu

mo

ral

CD

8+ T

cell

s

MMR-deficient MMR-proficient

0

500

1000

1500

Den

sit

y o

f in

vas

ive f

ron

t C

D8+

T c

ell

s

MMR-deficient MMR-proficient

0

20

40

60

80

100

PD

-L1

+ T

ILS

(%

)

MMR-deficient MMR-proficient

0

20

40

60

80

100

Invasiv

e f

ron

t P

D-L

1+ c

ell

s

(%)

MMR-deficient MMR-proficient

0

20

40

60

80

100

PD

-L1

+ T

um

or

Cell

s (

%)

P  =  0.07P  =  0.04

P  =  0.10 P  =  0.04

P  =  0.22

Invasive  Front  PD-­‐L1  Expression  and  CD8  T  Cell  InfiltraQon  

Invasive  Front  CD8+  T  cells   Invasive  Front  PD-­‐L1  Expression   Tumor  Front  PD-­‐L1  Expression  

Le DT et al. ASCO 2015, Le DT NEJM 2015

MMR-deficient tumors MMR-proficient tumors

0

1000

2000

3000

4000

5000P=0.007

Som

atic

muta

tions p

er

tum

or

Objective Response Stable Disease Progressive Disease

0

1000

2000

3000

4000

5000P=0.02

Som

atic

muta

tions p

er tu

mor

MutaQon  burden  is  associated  with  efficacy  

Le DT et al. ASCO 2015, Le DT NEJM 2015

Nivolumab  +/-­‐  Ipilimumab  (Checkmate  142)  

•  1ary  end-­‐point:  InvesQgator-­‐assessed  ORR  (RECIST  1.1)  in  MSI-­‐H  pts  

Overman ASCO 2016

MSS  Cohort  

MSI  Cohort  

N  =  70  (47  eval)  

N  =  30  (27  eval)  

Nivolumab  +/-­‐  Ipilimumab  (Checkmate  142)  MSI-­‐H  

Nivo  3mg/kg  

MSI-­‐H  Nivo  3  +  Ipi  1  

MSS  Nivo  1  +  Ipi  3  

MSS  Nivo  3  +  Ipi  1  

≥12w  follow-­‐up   N=47   N=27   N=10   N=10  

ORR,  N  (%)   12  (25.5)   9  (33.3)   1  (10)   0  

CR   0   0  

PR   12  (25.5)   9  (33.3)  

SD   14  (29.8)   14  (51.9)  

PD   17  (36.2)   3  (11.1)  

UNK   4  (8.5)   0  

All  pts   N=70   N=30   N=10   N=10  

mPFS  (mo)   5.3  (1.5-­‐NE)  

NE  (3.4-­‐NE)  

2.28  (0.6-­‐4.4)  

1.31  (0.9-­‐1.7)  

mOS  (mo)   17.1  (8.6-­‐NE)  

NE  (NE-­‐NE)  

11.5  (0.6-­‐NE)  

3.7  (1.2-­‐5.6)  

Overman ASCO 2016

Response  in  paQents  with  MSI-­‐H  

Overman ASCO 2016

CobimeQnib  +  Atezolizumab  

•  PD-­‐L1  and  MEK  inhibiQon:  a  raQonal  combinaQon  

CobimeQnib  +  Atezolizumab  

Bendell ASCO 2016

CobimeQnib  +  Atezolizumab  

KRAS  MT  CRC  

All  CRC  pts  

N=20   N=23  

ORR   20%   17%  

CR   0   0  

PR   20%   17%  

SD   20%   22%  

PD   50%   52%  

NE   10%   9%  

mPFS  (mo)   2.3  (1.8-­‐9,5)  

2.3  (1.8-­‐9,5)  

mOS  (mo)   NE  (6,5-­‐NE)  

NE  (6,5-­‐NE)  

Bendell ASCO 2016

Target   Therapy   Phase   Trial  Design   Trial  ID  

AnQ-­‐PDL1  

Atezolizumab  (engineered  IgG1,  

no  ADCC)  

I   Solid  tumours   NCT01375842  

Ib   Solid  tumours  (+  bevacizumab  ±  FOLFOX)   NCT01633970  

II   mCRC  (+  bevacizumab  +  fluoropyrimidine)     NCT02291289  

MEDI4736  (modified  IgG1,    

no  ADCC)  II   mCRC   NCT02227667  

AnQ-­‐PD1  

Nivolumab  (IgG4)  

I/II   mCRC  (±  ipilimumab)  (CheckMate  142)   NCT02060188  

I/II   Solid  tumours  (+INCB24360)   NCT02327078  

I/II   Solid  tumours  (+  chemotherapy)   NCT02423954  

I/II   Solid  tumours  (+  varlilumab)   NCT02335918  

Pembrolizumab  (IgG4,  humanised)  

I   Solid  tumours  (+  aflibercept)   NCT02298959  

I/II   GI  cancers  (+mFOLFOX6)   NCT02268825  

I/II   WT  mCRC  (+  cetuximab)   NCT02318901  

II   mCRC  (+  radiotherapy  or  ablaQon)   NCT02437071  

II   mCRC  (+  chemotherapy)   NCT02375672  

II   mCRC  (+  azaciQdine)   NCT02260440  

II   MSI-­‐posiQve/-­‐negaQve  CRC     NCT01876511  

II   MSI-­‐posiQve  CRC  (to  adress  response)   NTC02460198  

III   MSI-­‐H  and  dMMR  (Pembro  vs  1st  Line)   NTC02563002  

Examples  of  anQ-­‐PDL1/PD1  therapies  currently  under  invesQgaQon  in  CRC  

Clinicaltrials.gov  

Slide Courtesy of Josep Tabernero Clinicaltrials.gov

IMMUNOSCORE  •  ValidaQon  of  the  Immunoscore  as  a  prognosQc  marker  in  stage  I/II/III  colon  cancer  – Worldwide  consorQum  –  Final  analysis:  3855  paQents  

Galon ASCO 2016

IMMUNOSCORE  

Galon ASCO 2016

IMMUNOSCORE  

Galon ASCO 2016

Galon ASCO 2016

Outline  •  The  Immune  System  •  Immunotherapy  in  GI  Tumors  

– Gastric  Cancer  – Colorectal  Cancer  

•  Challenges  – PaKerns  of  response  &  AEs  

•  Conclusions  

IdenQfying  paKerns  of  response  

50  

25  

–125  

–25  

Change  from

 baseline  SPD  (%

)  

–50  

–75  

–21  –63  

RelaQve  day  from  date  of  first  dose  21   63   105   147   189   231   273   315   357  

0  

–100  

2810  2482  2154  1826  1498  1171  843  515  

–140  187  

–468  

SPD  (mm

2)  

50  

25  

–125  

–25  Ch

ange  from

 baseline  SPD  (%

)  –50  

–75  

–21  –63  

RelaQve  day  from  date  of  first  dose  21   63   105   147   189   231   273   315   357  

0  

–100  

1272  1124  975  827  678  530  382  233  

–64  85  

–212  

SPD  (mm

2)  

N  

N   N  N   N   N  

150  125  

–125  

75  

Change  from

 baseline  SPD  (%

)  

50  25  

–21  –63  

RelaQve  day  from  date  of  first  dose  21   63   105   147   189   231   273   315   357  

100  

0  

19373  17242  15111  12980  10849  8718  6587  4456  

194  2325  

–1937  

50  

25  

–125  

–25  

Change  from

 baseline  SPD  (%

)  

–50  

–75  

–21  –63  

RelaQve  day  from  first  dose  21   63   105   147   189   231   273   315   357   399   441   483   525  

0  

–100  

153  135  117  99  82  64  46  28  

–8  10  

–26  

SPD  (mm

2)  SPD  (m

m2)  

–100  –75  –50  –25  

N  

Response  in  baseline  lesions  

Response  ajer  ini1al  increase    in  total  tumor  volume  

‘Stable  disease’  with  slow,  steady  decline  in  total  tumor  volume  

Reduc1on  in  total  tumor  burden  ajer    appearance  of  new  lesions  

Wolchok Clin Cancer Res 2009

Managing  immune-­‐related  AEs  

Rash  

Autoimmune  hepaQQs  Elevated  transaminases  

PneumoniQs  

ColiQs  -­‐  duodeniQs  

PancreaQQs  

Type  1  diabetes  mellitus  

Hypothyroidism  MyosiQs  

Myasthenia  Gravis  

Melero Clin Cancer Res 2013

Outline  •  The  Immune  System  •  Immunotherapy  in  GI  Tumors  

– Gastric  Cancer  – Colorectal  Cancer  

•  Challenges  – PaKerns  of  response  &  AEs  

•  Conclusions  

Conclusions  1  •  The  immune  system  plays  an  important  role  in  GC  and  CRC  

tumorigenesis  –  Specifically  in  some  subtypes  

•  Checkpoint  inhibitors  have  shown  encouraging  efficacy,  in  monotherapy  –  In  GC  →  Pembro,  nivo,  nivo  +  ipi,  avelumab  –  In  CRC  →  Pembro,  nivo,  nivo  +  ipi  in  MSI    

•  And  also  with  different  combinaQons  approaches  –  Cobi  +  atezo  in  MSS  CRC  –  With  RT  (abscopal  effect)1  

•  Current  prospecQve  clinical  trials  will  validate  their  real  role  

1.  Seagal  ASCO  216  

Conclusions  2  

•  In  CRC,  immune  infiltrate  may  idenQfy  risk  pts  –  The  immunoscore  predicts  high  risk  stage  II  

 •  Efforts  to  idenQfy  predicQve  biomarkers  have  already  

begun  

•  Future  studies  should  idenQfy  the  immune-­‐paKern  of  response  and  beKer  understand  how  to  manage  the  related  adverse  events  

[email protected],  [email protected]    

Thank  you!