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Profil bibliographique

Dirk H. Walter

Informations fournies par OpenAlex. Research Africa ne déduit ni nationalité, ni poste, ni coordonnées personnelles.

133Publications signalées
8147Citations signalées
2Affiliations récentes

Les institutions déclarées

Les domaines associés

Cholangiocarcinoma and Gallbladder Cancer StudiesGallbladder and Bile Duct DisordersAngiogenesis and VEGF in CancerLymphoma Diagnosis and TreatmentPancreatic and Hepatic Oncology Research

Les publications récentes

Accès ouvert 2026 article OpenAlex

Intratumoral IDH1 mutation status in intrahepatic cholangiocarcinoma is homogeneous

Sharon Weidmann, Silvana Ebner, Aayushi Srivastava, Armin Wiegering et autres

INTRODUCTION: IDH1 mutations occur in approximately 10%-20% of intrahepatic cholangiocarcinoma (iCCA) and constitute an established target for molecularly guided therapy. As routine molecular diagnostics are commonly based on a single tumour sample, intratumoral heterogeneity could affect the reliable detection of actionable mutations. …

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0 citations Histopathology
Accès ouvert 2025 article OpenAlex

Clinical practice and implications of biomarker testing in biliary tract cancer: An observational study

Sabrina Welland, A Zöller, Ilektra A. Mavroeidi, Aurelie Tomczak et autres

Background & Aims Biliary tract cancers (BTC) comprise a group of aggressive malignancies with limited therapeutic options. Owing to the high frequency of actionable genomic alterations (GA) and the availability of targeted therapies, molecular testing has gained increasing importance; however, its implementation …

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2 citations JHEP Reports
2025 conference-paper OpenAlex

Claudin-18.2 im Cholangiokarzinom: erste immunhistochemische Expressionsanalysen

Maximilian N. Kinzler, Steffen Gretser, Falko Schulze, Katrin Bankov et autres

Einleitung: Die Anti-Claudin-18.2-Therapie (CLDN18.2) wurde kürzlich für die Behandlung von Adenokarzinomen des Magens oder des gastroösophagealen Übergangs zugelassen. Ziele: Ziel der vorliegenden Studie war es, erstmalig die Expression von CLDN18.2 im Cholangiokarzinom (CCA) zu untersuchen, um festzustellen, ob es Subgruppen von Patienten …

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0 citations Zeitschrift für Gastroenterologie
Accès ouvert 2025 article OpenAlex

Overexpression of KMT9α is associated with poor outcome in cholangiocarcinoma patients

Maximilian N. Kinzler, Eric Metzger, Katrin Bankov, Anna Ramos-Triguero et autres

PURPOSE: The newly discovered histone methyltransferase KMT9 serves as an epigenetic regulator of carcinogenesis in various cancer entities. For the first time, we investigated the presence of KMT9α in cholangiocarcinoma, the association with histologic subtypes, and its impact on survival. METHODS: A …

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0 citations Journal of Cancer Research and Clinical Oncology
Accès ouvert 2025 article OpenAlex

Risk Factors for Premature Exchange of Percutaneous Biliary Drainage in Benign and Malignant Biliary Strictures: A Retrospective Single-Center Study

Alica Kubesch, Alexander Schütz, Georg Dultz, Fabian Finkelmeier et autres

Introduction: Treating biliary obstruction remains a common clinical problem. Endoscopic retrograde cholangiopancreatography (ERCP) with stent insertion remains the gold standard. If ERCP fails, percutaneous transhepatic biliary drainage (PTBD) is one treatment option. Despite a high success rate, early- and late-onset complications occur …

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0 citations Visceral Medicine
2025 conference-paper OpenAlex

Percutaneous endoscopic gastrostomy by “push” method with gastropexy or “pull-through” method: is there a difference regarding peristomal infections?

Christiana Graf, A. W. Mondorf, C Welkerling, D Hessz et autres

Aims Enteral nutrition is crucial for managing patients with swallowing difficulties, particularly those with head and neck cancers or neurological disorders. Percutaneous endoscopic gastrostomy (PEG) has become the standard method for providing enteral nutrition, with two primary techniques: the “pull-through” technique and …

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0 citations Endoscopy
Accès ouvert 2025 article OpenAlex

Evaluation of an IDH1/2 Mutation FastTrack Assay for Patients with Cholangiocarcinoma

Melanie Winter, Silvana Ebner, Nina Scheuber, Falko Schulze et autres

Background: Cholangiocarcinoma, a malignancy originating from the bile ducts, poses significant treatment challenges due to its typically late diagnosis and limited therapeutic options. However, recent advances in molecular genetics enable more personalized treatment approaches. A notable breakthrough in this context is the …

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1 citation Cancers
Accès ouvert 2024 article OpenAlex

Expression of claudin‐18.2 in cholangiocarcinoma: a comprehensive immunohistochemical analysis from a German tertiary centre

Maximilian N. Kinzler, Steffen Gretser, Falko Schulze, Katrin Bankov et autres

Aims Anti‐claudin‐18.2 (CLDN18.2) therapy was recently approved for the treatment of gastric or gastro‐oesophageal junction adenocarcinoma. The aim of the present study was to investigate the expression of CLDN18.2 in cholangiocarcinoma (CCA) to determine whether there is a subgroup of patients who …

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13 citations Histopathology
Accès ouvert 2024 article OpenAlex

A New Drying Method of Thermolabile Flexible Endoscope Channels by Laminar and Turbulent Airflow: A Prospective, Randomized-Controlled, Single-Center, Proof-of-Concept Trial

Florian Alexander Michael, Michael J. Jung, M. Reimers, C. Oschwald et autres

INTRODUCTION: International guidelines suggest different possibilities for drying of endoscopes during reprocessing. Clinical results of these available drying methods are not satisfactory. The aim of this study was to compare the drying cycle of a standard endoscope washer-disinfector (EWD) (standard drying method …

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3 citations The American Journal of Gastroenterology
Accès ouvert 2024 article OpenAlex

A novel ultrasound-based algorithm for the detection of pancreatic stents placed for prophylaxis of post-ERCP pancreatitis: a prospective trial

Florian Alexander Michael, Clara Feldmann, Hans‐Peter Erasmus, Alica Kubesch et autres

Before removal of retained pancreatic stents placed during endoscopic retrograde cholangiopancreatography to avoid post-ERCP pancreatitis, imaging is recommended. The aim of the present study was to evaluate a new ultrasound-based algorithm.Patients who received a pancreatic stent for PEP prophylaxis were included. Straight …

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1 citation Ultraschall in der Medizin - European Journal of Ultrasound
Accès ouvert 2024 article OpenAlex

Small duct and large duct type intrahepatic cholangiocarcinoma reveal distinct patterns of immune signatures

Simon Bernatz, Falko Schulze, Julia Bein, Katrin Bankov et autres

PURPOSE: Dedicated gene signatures in small (SD-iCCA) and large (LD-iCCA) duct type intrahepatic cholangiocarcinoma remain unknown. We performed immune profiling in SD- and LD-iCCA to identify novel biomarker candidates for personalized medicine. METHODS: Retrospectively, 19 iCCA patients with either SD-iCCA (n = …

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6 citations Journal of Cancer Research and Clinical Oncology
Accès ouvert 2024 article OpenAlex

Heterogeneity of small duct‐ and large duct‐type intrahepatic cholangiocarcinoma

Maximilian N. Kinzler, Falko Schulze, Jan Jeroch, Christina Schmitt et autres

AIMS: The histological subtype of intrahepatic cholangiocarcinoma (iCCA) is associated with different mutational characteristics that impact clinical management. So far, data are lacking on the presence of small duct iCCA (SD-iCCA) and large duct iCCA (LD-iCCA) in a single patient. The aim …

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11 citations Histopathology

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