Olaf Ortmann

9.9k total citations · 1 hit paper
346 papers, 6.3k citations indexed

About

Olaf Ortmann is a scholar working on Oncology, Genetics and Reproductive Medicine. According to data from OpenAlex, Olaf Ortmann has authored 346 papers receiving a total of 6.3k indexed citations (citations by other indexed papers that have themselves been cited), including 124 papers in Oncology, 109 papers in Genetics and 103 papers in Reproductive Medicine. Recurrent topics in Olaf Ortmann's work include Estrogen and related hormone effects (96 papers), Ovarian function and disorders (45 papers) and Ovarian cancer diagnosis and treatment (42 papers). Olaf Ortmann is often cited by papers focused on Estrogen and related hormone effects (96 papers), Ovarian function and disorders (45 papers) and Ovarian cancer diagnosis and treatment (42 papers). Olaf Ortmann collaborates with scholars based in Germany, United States and Poland. Olaf Ortmann's co-authors include Oliver Treeck, Günter Emons, K. Diedrich, Claus Lattrich, Monika Klinkhammer‐Schalke, Andrew V. Schally, Florian Zeman, Atanas Ignatov, Susanne Schüler‐Toprak and Michael Koller and has published in prestigious journals such as Journal of Clinical Oncology, The Journal of Clinical Endocrinology & Metabolism and Cancer.

In The Last Decade

Olaf Ortmann

310 papers receiving 6.1k citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Ki-67 is a prognostic parameter in breast cancer patients: results of a large population-based cohort of a cancer registry

2013 434 citations EC Inwald, Monika Klinkhammer‐Schalke et al. Breast Cancer Research and Treatment profile →

Peers

Countries citing papers authored by Olaf Ortmann

Since Specialization

Citations

This map shows the geographic impact of Olaf Ortmann's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Olaf Ortmann with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Olaf Ortmann more than expected).

Fields of papers citing papers by Olaf Ortmann

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Olaf Ortmann. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Olaf Ortmann. The network helps show where Olaf Ortmann may publish in the future.

Co-authorship network of co-authors of Olaf Ortmann

This figure shows the co-authorship network connecting the top 25 collaborators of Olaf Ortmann. A scholar is included among the top collaborators of Olaf Ortmann based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Olaf Ortmann. Olaf Ortmann is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

#	Work	Indexed citations
1	Die Behandlung in zertifizierten Brustkrebszentren verbessert die Überlebenschancen von Patientinnen mit Brustkrebs 2024 ·Senologie - Zeitschrift für Mammadiagnostik und -therapie* ·Olaf Schoffer, Pauline Wimberger, Michael Gerken, (unknown), Christoph Bobeth, M Rößler, Patrik Dröge, (unknown), Christian Günster, (unknown), Theresa Link, Anton Scharl, Elisabeth C. Inwald, Karin Kast, Thomas Papathemelis, Olaf Ortmann, Monika Klinkhammer‐Schalke, Jochen Schmitt	1
2	Unraveling the diagnostic potential of disseminated and circulating cancer cells: a case study of a 34-years-old patient with rapidly progressing breast cancer 2024 ·Geburtshilfe und Frauenheilkunde ·(unknown), (unknown), (unknown), (unknown), Christian Werno, Olaf Ortmann, Christoph A. Klein, S. Seitz	0
3	Treatment in Certified Breast Cancer Centers Improves Chances of Survival of Patients with Breast Cancer 2024 ·Geburtshilfe und Frauenheilkunde ·Olaf Schoffer, Pauline Wimberger, Michael Gerken, (unknown), Christoph Bobeth, M Rößler, Patrik Dröge, (unknown), Christian Günster, (unknown), Theresa Link, Anton Scharl, Elisabeth C. Inwald, Karin Kast, Thomas Papathemelis, Olaf Ortmann, Monika Klinkhammer‐Schalke, Jochen Schmitt	6
4	Endometrial Cancer – Long-Term Survival in Certified Cancer Centers and Non-Certified Hospitals 2024 ·Geburtshilfe und Frauenheilkunde ·(unknown), (unknown), Michael Gerken, Olaf Schoffer, Pauline Wimberger, (unknown), Christoph Bobeth, M Rößler, Patrik Dröge, (unknown), Christian Günster, (unknown), Theresa Link, (unknown), Thomas Papathemelis, Olaf Ortmann, Jochen Schmitt, Monika Klinkhammer‐Schalke	3
5	The risk of endocrine interventions in carriers of a genetic predisposition for breast and gynecologic cancers: recommendations of the German Consortium for Hereditary Breast and Ovarian Cancer 2024 ·Journal of Cancer Research and Clinical Oncology ·Olaf Ortmann, Susanne Schüler‐Toprak, Karin Kast, (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown)	0
6	Role of Estrogen Receptor β, G-Protein Coupled Estrogen Receptor and Estrogen-Related Receptors in Endometrial and Ovarian Cancer 2023 ·Cancers ·Susanne Schüler‐Toprak, Maciej Skrzypczak, Carsten Gründker, Olaf Ortmann, Oliver Treeck	15
7	Therapie von menopausalen Symptomenbei Patientinnen mit Krebserkrankungen 2023 ·(unknown), Olaf Ortmann	0
8	Versorgungsnahe Daten für Versorgungsanalysen – Teil 3 des Manuals 2022 ·Das Gesundheitswesen ·Christof Veit, (unknown), Simone Wesselmann, Stephanie Stock, Claus-Dieter Heidecke, Christian Apfelbacher, Stefan Benz, Karsten Dreinhöfer, Michael Hauptmann, Falk Hoffmann, Wolfgang Hoffmann, Thomas Kaiser, Monika Klinkhammer‐Schalke, Michael Koller, Tanja Kostuj, Olaf Ortmann, Jochen Schmitt, Holger J. Schünemann, Max Geraedts	6
9	Protein kinase C targeting of luminal (T-47D), luminal/HER2-positive (BT474), and triple negative (HCC1806) breast cancer cells in-vitro with AEB071 (Sotrastaurin) is efficient but mediated by subtype specific molecular effects 2022 ·Archives of Gynecology and Obstetrics ·(unknown), (unknown), (unknown), Hedwig Lammert, Michael Hummel, Olaf Ortmann, Wolfgang Jagla, Andreas Gäumann, Anja K. Wege, Gero Brockhoff	4
10	STRN-ALKFusion in a Case of Malignant Peritoneal Mesothelioma: Mixed Response to Crizotinib, Mode of Resistance, and Brigatinib Sequential Therapy 2021 ·JCO Precision Oncology ·(unknown), Alexander Scheiter, Florian Lüke, Felix Keil, Kirsten Utpatel, (unknown), Johannes Seitz, Christoph Nießen, Atanas Ignatov, Wolfgang Dietmaier, Diego F. Calvisi, Matthias Evert, Olaf Ortmann, Stephan Seitz	4
11	Use of social service counseling by cancer patients: an analysis of quality assurance data of 6339 breast cancer patients from 13 certified centers in Germany treated between 2015 and 2017 2021 ·BMC Cancer ·Clara Breidenbach, Simone Wesselmann, (unknown), Olaf Ortmann, (unknown), (unknown), Gerhard Gebauer, (unknown), Christoph Lindner, (unknown), Friedemann Schad, (unknown), Lorenz Rieger, Julia Ferencz, (unknown), Christoph Kowalski	1
12	Use of oral contraceptives in BRCA mutation carriers and risk for ovarian and breast cancer: a systematic review 2020 ·Archives of Gynecology and Obstetrics ·(unknown), S. Seitz, Karin Kast, G. Emons, Olaf Ortmann	39
13	Screening-relevant age threshold of 70 years and older is a stronger determinant for the choice of adjuvant treatment in breast cancer patients than tumor biology 2017 ·Breast Cancer Research and Treatment ·EC Inwald, Olaf Ortmann, Michael Koller, Florian Zeman, Ferdinand Hofstädter, Matthias Evert, Gero Brockhoff, Monika Klinkhammer‐Schalke	26
14	Search for novel therapies for triple negative breast cancers (TNBC): analogs of luteinizing hormone-releasing hormone (LHRH) and growth hormone-releasing hormone (GHRH) 2012 ·Hormone Molecular Biology and Clinical Investigation ·Stefan Buchholz, Stephan Seitz, J. Engel, (unknown), Olaf Ortmann, Roberto Pérez‐Castañeda, Norman L. Block, Andrew V. Schally	4
15	Icb-1Gene Expression is Elevated in Human Endometrial Adenocarcinoma and is Closely Associated With HER2 Expression 2010 ·Cancer Investigation ·(unknown), Claus Lattrich, Maciej Skrzypczak, (unknown), Olaf Ortmann, Oliver Treeck	3
16	GPR30 gene polymorphisms are associated with progesterone receptor status and histopathological characteristics of breast cancer patients 2009 ·The Journal of Steroid Biochemistry and Molecular Biology ·(unknown), Claus Lattrich, (unknown), (unknown), Olaf Ortmann, Oliver Treeck	24
17	Konsensusempfehlungen zur Hormontherapie (HT) im Klimakterium und in der Postmenopause - im Auftrag des Vorstands der Deutschen Gesellschaft für Gynäkologie und Geburtshilfe 2003 ·Geburtshilfe und Frauenheilkunde ·Olaf Ortmann, (unknown), W. Braendle, Cosima Brucker, Martina Dören, Günter Emons, F. Geisthövel, Ludwig Kiesel, (unknown), (unknown), T. Rabe, E. Windler	4
18	Update primäres Mammakarzinom 2003 2003 ·Geburtshilfe und Frauenheilkunde ·Matthias W. Beckmann, Peter A. Fasching, Johannes M. Weiss, A. Magener, Olaf Ortmann	2
19	Interactions of insulin-like growth factor-I, insulin and estradiol with GnRH-stimulated luteinizing hormone release from female rat gonadotrophs 2001 ·European Journal of Endocrinology ·(unknown), Jennifer M. Weiss, (unknown), K. Diedrich, Olaf Ortmann	48
20	Modulatory action of progesterone and progesterone antagonists on hypothalamic-pituitary function 1994 ·Human Reproduction ·Olaf Ortmann, Kevin Catt, K.-D. Schulz, Günter Emons	4

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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