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Molecular Oncology of Gastrointestinal Tumors

Division of Molecular Oncology of Gastrointestinal Tumors

Prof. Dr. Rienk Offringa

With respect to the development of therapeutic strategies against pancreatic ductal adenocarcinoma, the most common type of pancreatic cancer, it is important to realize that most (>50%) of the tumor volume consists of stroma. This is rich in activated fibroblasts and, depending on the individual tumor, can also be infiltrated by CD3+ lymphocytes (CD3 IHC). Image: : E. Ryschich, University of Heidelberg

The Division Molecular Oncology of Gastrointestinal Tumors was founded in 2011 with support from the K.H. Bauer Foundation. The decision to direct research efforts to pancreatic cancer was based on the urgent unmet medical need this disease represents, with incidence and mortality rates still being almost equal, and the fact that Heidelberg University hosts the European Pancreas Center, one of the world’s leading clinics for the treatment of pancreatic cancer.

Our research aims at the implementation of immunotherapy in conjunction with surgery, chemotherapy and/or small molecule inhibitors. The choice for immunotherapy was inspired by recent successes with this approach in the clinic for other cancers, as well as emerging pre-clinical evidence that redirection of immune pathways is one of the most promising avenues towards more effective non-surgical treatment of pancreatic cancer.

Our therapeutic strategy primarily involves two approaches:

  • Stimulation of the endogenous immune potential, in particular in the tumor stroma, by means of agonist immunostimulatory monoclonal antibodies
  • Exploitation of the most powerful mode of immunotherapy: infusion of ex vivo engineered autologous T-lymphocytes.

Patient-based research is supported by the excellent availability of patient biopsies, including the tissue that represents the interface between tumor and immune system: tumor-draining lymph nodes. Our research in mice focuses on genetically engineered, autochthonous tumor models.

It is essential that our research does not stop at the threshold between lab and clinic. This is why we, together with our partners in the university clinic and at the National Center for Tumor Diseases (NCT), are setting up a pipeline for rationally designed clinical trials in pancreatic cancer. Biomarker research constitutes a pivotal aspect of this rational design, both with respect to patient stratification and evaluation of therapy efficacy.

Initial studies will be staged in patients with non-resectable pancreatic cancer, for which median survival time is ~6 months. Since this leaves insufficient time to boost endogenous T-cell immunity, our approach focuses on boosting endogenous innate immunity or, alternatively, replenishing the patient’s immune system with ex vivo engineered autologous T-cells. Since the median survival time of patients diagnosed with resectable disease is ~1.5 years, modulation of endogenous T-cell immunity will be considered in this patient group.

Although phase I safety studies generally involve end stage patients, it is important that further studies aimed at harnessing the endogenous immune response are implemented in the context of first-line treatment, before the patient’s immune system has deteriorated due to progressive disease and cytotoxic anti-cancer regimens. In practical terms, this currently means combination with standard of care chemotherapy (gemcitabine) for non-resectable disease, and (neo)adjuvant treatment for resectable disease.


Prof. Dr. Rienk Offringa
Molecular Oncology of Gastrointestinal Tumors (D200)
Deutsches Krebsforschungszentrum
Im Neuenheimer Feld 280
69120 Heidelberg
Tel: +49 6221-423140

Selected Publications

  • Proimmunogenic impact of MEK inhibition synergizes with agonist anti-CD40 immunostimulatory antibodies in tumor therapy. Baumann D, Hägele T, Mochayedi J, Drebant J, Vent C, Blobner S, Noll JH, Nickel I, Schumacher C, Boos SL, Daniel AS, Wendler S, Volkmar M, Strobel O, Offringa R. Nat Commun. 2020 May 1;11(1):2176. doi: 10.1038/s41467-020-15979-2. PMID: 32358491
  • The Outcome of Ex Vivo TIL Expansion Is Highly Influenced by Spatial Heterogeneity of the Tumor T-Cell Repertoire and Differences in Intrinsic In Vitro Growth Capacity between T-Cell Clones. Poschke IC, Hassel JC, Rodriguez-Ehrenfried A, Lindner KAM, Heras-Murillo I, Appel LM, Lehmann J, Lövgren T, Wickström SL, Lauenstein C, Roth J, König AK, Haanen JBAG, van den Berg J, Kiessling R, Bergmann F, Flossdorf M, Strobel O, Offringa R. Clin Cancer Res. 2020 Apr 17. doi: 10.1158/1078-0432.CCR-19-3845. Online ahead of print. PMID: 32303540
  • Identification of a tumor-reactive T-cell repertoire in the immune infiltrate of patients with resectable pancreatic ductal adenocarcinoma. Poschke I, Faryna M, Bergmann F, Flossdorf M, Lauenstein C, Hermes J, Hinz U, Hank T, Ehrenberg R, Volkmar M, Loewer M, Glimm H, Hackert T, Sprick MR, Höfer T, Trumpp A, Halama N, Hassel JC, Strobel O, Büchler M, Sahin U, Offringa R. Oncoimmunology. 2016 Oct 7;5(12):e1240859. doi: 10.1080/2162402X.2016.1240859. eCollection 2016. PMID: 28123878
  • Next-generation TCR sequencing - a tool to understand T-cell infiltration in human cancers. Poschke I, Flossdorf M, Offringa R. J Pathol. 2016 Dec;240(4):384-386. doi: 10.1002/path.4800. Epub 2016 Oct 21. PMID: 27569598
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