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EnRoute⊕ study

 Jeroen Bosch Ziekenhuis/LUMC
RATIONALE VAN DE STUDIE


• Hoog recidief% pN0 coloncarcinoom

• 5jr recidief%             5jr OS
  stage I 10%               90%
  stage II 15-30%           75%
RATIONALE VAN DE STUDIE


• Epidemiologie pN0 coloncarcinoom

  – stage I:    16%
  – stage II:   38%
RATIONALE VAN DE STUDIE


•Epidemiologie pN0    ~ 7.500/jr


  – stage I:    16%   ~ 4.000 stage I-II
  – stage II:   38%   ~ 1200 ptn/jr
RATIONALE VAN DE STUDIE


• Hoog recidief% pN0 coloncarcinoom
  patiënten

• Ruimte voor
  1.) verbetering
  2.) EnRoute⊕ study
RATIONALE VAN DE STUDIE
• hoog-risico pN0 subgroepen
  –   <10LN
  –   T4
  –   Perforatie /obstructie
  –   Lymfangio invasie


        micrometastasen (MM) ?
Meta analyse MM/ITC  DFS




  Rahbari et al, JCO 2011.36.9504
EnRoute⊕ PROTOCOL
EnRoute⊕ PROTOCOL
HYPOTHESEN

   Behandeling met adjuvante chemotherapie
   (CAPOX)resulteert in een verbetering van de DFS en
   OS van pN0micro+ colon cancer patiënten.
EnRoute⊕ PROTOCOL
STUDIE OPZET

•   multicenter, open label, gerandomiseerde klinische trial
    (RCT).


•   57 centra hebben deelname toegezegd.
•   31 centra goedgekeurd.
PATHOLOGIE PROTOCOL

DEFINITIES IN EnROUTE⊕
Definitions used in the En Route⊕ study
                                 Isolated Tumor Cells   Micrometastases
                                         (ITCs)               (MMs)
size                                   < 0.2 mm            0.2 – 2 mm
localization                          no defined          no defined
detection method                    HES and/or IHC      HES and/or IHC
formal designation (present vs       pN0i+ vs pN0i-     pN0mi+ vs pN0mi-
absent)
EnRoute⊕ if present                   pN0micro+             pN0micro+
EnRoute⊕ PROTOCOL
CONSORT STATEMENT
EnRoute⊕ PROTOCOL
CHEMOTHERAPIE
 randomisatie

• CAPOX
  –   Oxaliplatin:              dag 1:      130 mg/m2 i.v.
  –   Capecitabine (Xeloda®):   dag 1-14:   2x/dg 1000 mg/m2



• 8 cycli van 3 wkn; 1 week interval
EnRoute⊕ PROTOCOL
PRIMAIR EINDPUNT

-   3-jr ziektevrije overleving (DFS)
    (% patiënten zonder locaal recidief / metastase op afstand, of
     secundair primair colorectaal carcinoom)
EnRoute⊕ PROTOCOL
FOLLOW-UP

 Richtlijn coloncarcinoom 2.0
WWW.ENROUTEPLUS.NL
EnRoute⊕ PROTOCOL
Onderzoeksgroep
  –   K. (Koop) Bosscha (JBZ)             Principal Investigator
  –   D.J. (Daan) Lips (JBZ)              Protocol coordinator
  –   B. (Boukje) Koebrugge (JBZ/LUMC)    PhD student/study coordinator
  –   P. (Peet) Nooijen (JBZ)
  –   H.J. (Hans) van de Linden (JBZ)
  –   H.F. (Hans) Pruijt (JBZ)
  –   V.T.H.B.M. (Vincent) Smit (LUMC)
  –   H. (Hein) Putter (LUMC)
  –   G.J. (Gerrit-Jan) Liefers (LUMC)
  –   C.J.H. (Cock) van de Velde (LUMC)   Co-Principal Investigator




       Educational Grant:
ex vivo SLNM
ex vivo SLNM   Openen v/h colon
ex vivo SLNM   schoonmaken
ex vivo SLNM   Injectie
ex vivo SLNM   Detectie
ex vivo SLNM
Transport vers of op formaline
PATHOLOGIE PROTOCOL
STANDAARD H&E KLEURING
• alle lymfeklieren (SLN & non SLN)
• blue vs non-blue
• 1 HE coupe per level
PATHOLOGIE PROTOCOL
AANVULLENDE PATHOLOGIE
• Alleen SLN’s van pN0 patiënten
• Definitie SLNs?
  – 1e 3 blauwe klieren het dichtst bij de
     tumor gelegen
     (gedefiniëerd door patholoog)
PATHOLOGIE PROTOCOL
AANVULLENDE PATHOLOGIE

• Inclusie ahv grootte
   – <5mm in toto
   – 5-10mm bivalve
   – >10mm 4 sections
PATHOLOGIE PROTOCOL
AANVULLENDE PATHOLOGIE

•   pN0: alle SLN’s op 3 niveau’s
•   HE & IHC coupe per level
•   Interval 150-250 µm
•   IHC: CK AE1/AE3,
    CAM5.2, LU5
PATHOLOGY PROTOCOL
STEP 3
                     conventional H&E staining
                      (all sections LNN 1 – 10)

         a.
              macrometastasis       no macrometastasis
                   (pN+)                  (pN0)

         b.
              NO IHC staining      H&E and IHC staining
                                    of all SLNs (max 3)

 EXCLUSIE CRITERIA                    detection of
 < 10 LNs                            micrometastasis
 T4
 Lymfangio invasie
 perforatie
 obstructie
PATHOLOGY PROTOCOL
STEP 3
                     conventional H&E staining
                      (all sections LNN 1 – 10)

         a.
              macrometastasis       no macrometastasis
                   (pN+)                  (pN0)

         b.
              NO IHC staining      H&E and IHC staining
                                    of all SLNs (max 3)

 EXCLUSIE CRITERIA                    detection of
 < 10 LNs                            micrometastasis
 T4
 Lymfangio invasie
 perforatie
 obstructie

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Enroute Study

Editor's Notes

  1. Geldt ook voor DSS en OS!