Niklas Zar

1.7k total citations · 1 hit paper
16 papers, 1.6k citations indexed

About

Niklas Zar is a scholar working on Oncology, Epidemiology and Molecular Biology. According to data from OpenAlex, Niklas Zar has authored 16 papers receiving a total of 1.6k indexed citations (citations by other indexed papers that have themselves been cited), including 9 papers in Oncology, 5 papers in Epidemiology and 4 papers in Molecular Biology. Recurrent topics in Niklas Zar's work include Neuroendocrine Tumor Research Advances (4 papers), Pancreatic and Hepatic Oncology Research (4 papers) and Genetic factors in colorectal cancer (3 papers). Niklas Zar is often cited by papers focused on Neuroendocrine Tumor Research Advances (4 papers), Pancreatic and Hepatic Oncology Research (4 papers) and Genetic factors in colorectal cancer (3 papers). Niklas Zar collaborates with scholars based in Sweden, Vietnam and Bahrain. Niklas Zar's co-authors include Lars Holmberg, Jonas Rastad, Erik Wilander, Sture Löfgren, Andreas Matussek, Roland E. Andersson, Marita Skarstedt, Jan Dimberg, Jan Dimberg and Hans Garmo and has published in prestigious journals such as British journal of surgery, European Journal of Cancer and World Journal of Surgery.

In The Last Decade

Niklas Zar

16 papers receiving 1.6k 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.

Survival in small intestinal adenocarcinoma

1996 1.2k citations Niklas Zar, Lars Holmberg et al. European Journal of Cancer profile →

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
Niklas Zar Sweden	13	550	494	361	260	231	16	1.6k
Tadashi Miyashita Japan	27	838 1.5×	604 1.2×	768 2.1×	259 1.0×	391 1.7×	139	2.2k
Jeff Leips United States	27	500 0.9×	306 0.6×	568 1.6×	415 1.6×	287 1.2×	50	2.9k
Jeffrey L. Jensen United States	14	508 0.9×	287 0.6×	287 0.8×	177 0.7×	198 0.9×	34	2.1k
Jean Bergeron Canada	23	577 1.0×	280 0.6×	504 1.4×	70 0.3×	132 0.6×	54	2.1k
David Rowell Australia	27	611 1.1×	262 0.5×	1.0k 2.8×	111 0.4×	196 0.8×	94	2.6k
Francisco Ramı́rez Spain	31	1.5k 2.6×	230 0.5×	189 0.5×	93 0.4×	774 3.4×	128	2.9k
Denis Roy Canada	20	647 1.2×	616 1.2×	246 0.7×	254 1.0×	177 0.8×	38	2.4k
R J Dowsett United States	17	861 1.6×	345 0.7×	513 1.4×	85 0.3×	101 0.4×	66	1.7k
Robert G. Hooper United States	28	906 1.6×	473 1.0×	213 0.6×	61 0.2×	536 2.3×	83	1.9k
Anders P. Tøttrup Denmark	39	2.2k 4.0×	604 1.2×	925 2.6×	229 0.9×	426 1.8×	154	4.3k

Countries citing papers authored by Niklas Zar

Since Specialization

Citations

This map shows the geographic impact of Niklas Zar'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 Niklas Zar with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Niklas Zar more than expected).

Fields of papers citing papers by Niklas Zar

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Niklas Zar. 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 Niklas Zar. The network helps show where Niklas Zar may publish in the future.

Co-authorship network of co-authors of Niklas Zar

This figure shows the co-authorship network connecting the top 25 collaborators of Niklas Zar. A scholar is included among the top collaborators of Niklas Zar 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 Niklas Zar. Niklas Zar is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

Sort: Min cites: Since: Top N: Style:

16 of 16 papers shown

Olsen, Renate Slind, Emina Vorkapić, Roland E. Andersson, et al.. (2015). CD93 gene polymorphism is associated with disseminated colorectal cancer. International Journal of Colorectal Disease. 30(7). 883–890. 25 indexed citations

Olsen, Renate Slind, Roland E. Andersson, Niklas Zar, et al.. (2015). Prognostic significance of PLA2G4C gene polymorphism in patients with stage II colorectal cancer. Acta Oncologica. 55(4). 474–479. 8 indexed citations

Kodeda, Karl, Robert Johansson, Niklas Zar, et al.. (2015). Time trends, improvements and national auditing of rectal cancer management over an 18‐year period. Colorectal Disease. 17(9). O168–79. 72 indexed citations

Dimberg, Jan, Renate Slind Olsen, Marita Skarstedt, et al.. (2014). Polymorphism of the p38β gene in patients with colorectal cancer. Oncology Letters. 8(3). 1093–1095. 2 indexed citations

Dimberg, Jan, Marita Skarstedt, Sture Löfgren, Niklas Zar, & Andreas Matussek. (2014). Protein expression and gene polymorphism of CXCL10 in patients with colorectal cancer. Biomedical Reports. 2(3). 340–343. 15 indexed citations

Dimberg, Jan, Thai Trinh Hong, Marita Skarstedt, et al.. (2014). Novel and differential accumulation of mitochondrial DNA deletions in Swedish and vietnamese patients with colorectal cancer.. PubMed. 34(1). 147–52. 14 indexed citations

Song, Nguyễn Văn, Marita Skarstedt, Sture Löfgren, et al.. (2013). Gene polymorphism of matrix metalloproteinase-12 and -13 and association with colorectal cancer in Swedish patients.. PubMed. 33(8). 3247–50. 21 indexed citations

Dimberg, Jan, Thai Trinh Hong, Marita Skarstedt, et al.. (2013). Detection of cytomegalovirus DNA in colorectal tissue from Swedish and Vietnamese patients with colorectal cancer.. PubMed. 33(11). 4947–50. 27 indexed citations

Dimberg, Jan, Thai Trinh Hong, Marita Skarstedt, et al.. (2012). Analysis of APC and IGFBP7 promoter gene methylation in Swedish and Vietnamese colorectal cancer patients. Oncology Letters. 5(1). 25–30. 20 indexed citations

10.

Dimberg, Jan, et al.. (2011). DNA promoter methylation status and protein expression of interleukin-8 in human colorectal adenocarcinomas. International Journal of Colorectal Disease. 27(6). 709–714. 24 indexed citations

11.

Dimberg, Jan, et al.. (2011). Expression of the serine protease inhibitor serpinA3 in human colorectal adenocarcinomas. Oncology Letters. 2(3). 413–418. 27 indexed citations

12.

Landerholm, Kalle, Niklas Zar, Roland E. Andersson, Sture Falkmer, & Johannes Järhult. (2011). Survival and prognostic factors in patients with small bowel carcinoid tumour. British journal of surgery. 98(11). 1617–1624. 62 indexed citations

13.

Wågsäter, Dick, Sture Löfgren, Niklas Zar, Anders Hugander, & Jan Dimberg. (2010). Pigment Epithelium-Derived Factor Expression in Colorectal Cancer Patients. Cancer Investigation. 28(8). 872–877. 12 indexed citations

14.

Zar, Niklas, Hans Garmo, Lars Holmberg, & Per Hellman. (2008). Risk of second primary malignancies and causes of death in patients with adenocarcinoma and carcinoid of the small intestine. European Journal of Cancer. 44(5). 718–725. 21 indexed citations

15.

Zar, Niklas, Hans Garmo, Lars Holmberg, Jonas Rastad, & Per Hellman. (2004). Long‐term Survival of Patients with Small Intestinal Carcinoid Tumors. World Journal of Surgery. 28(11). 1163–1168. 40 indexed citations

16.

Zar, Niklas, Lars Holmberg, Erik Wilander, & Jonas Rastad. (1996). Survival in small intestinal adenocarcinoma. European Journal of Cancer. 32(12). 2114–2119. 1210 indexed citations breakdown →

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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