Ann Orren

1.3k total citations
49 papers, 976 citations indexed

About

Ann Orren is a scholar working on Immunology, Microbiology and Hematology. According to data from OpenAlex, Ann Orren has authored 49 papers receiving a total of 976 indexed citations (citations by other indexed papers that have themselves been cited), including 41 papers in Immunology, 20 papers in Microbiology and 17 papers in Hematology. Recurrent topics in Ann Orren's work include Complement system in diseases (39 papers), Bacterial Infections and Vaccines (20 papers) and Blood groups and transfusion (17 papers). Ann Orren is often cited by papers focused on Complement system in diseases (39 papers), Bacterial Infections and Vaccines (20 papers) and Blood groups and transfusion (17 papers). Ann Orren collaborates with scholars based in United Kingdom, South Africa and Ireland. Ann Orren's co-authors include Reinhard Würzner, Paul C. Potter, Robert L. Binder, John J. Stegeman, M. J. Hobart, B A Fernie, B. Paul Morgan, R Cooper, E. D. du Toit and P J Lachmann and has published in prestigious journals such as The Lancet, Journal of Clinical Investigation and The Journal of Immunology.

In The Last Decade

Ann Orren

48 papers receiving 950 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Ann Orren United Kingdom	18	659	360	282	208	131	49	976
J L Van Snick Belgium	10	195 0.3×	28 0.1×	150 0.5×	52 0.3×	63 0.5×	11	708
Xiaorong Liu China	18	711 1.1×	14 0.0×	229 0.8×	75 0.4×	30 0.2×	56	1.2k
Michael A. Fournel United States	16	278 0.4×	14 0.0×	380 1.3×	247 1.2×	84 0.6×	30	1.1k
P. W. Mathieson United Kingdom	16	413 0.6×	8 0.0×	93 0.3×	67 0.3×	105 0.8×	30	1.0k
Martin Vokurka Czechia	18	99 0.2×	14 0.0×	428 1.5×	226 1.1×	372 2.8×	48	1.2k
Pascale Cornillet France	14	206 0.3×	11 0.0×	210 0.7×	106 0.5×	90 0.7×	22	838
María Rosa Moya‐Quiles Spain	18	403 0.6×	18 0.1×	53 0.2×	152 0.7×	14 0.1×	88	969
Hilaire J. Meuwissen United States	16	272 0.4×	12 0.0×	96 0.3×	151 0.7×	32 0.2×	32	689
Ina S. Klasen Netherlands	18	519 0.8×	13 0.0×	68 0.2×	72 0.3×	36 0.3×	45	1.1k
James S. Wild United States	8	434 0.7×	43 0.1×	25 0.1×	58 0.3×	9 0.1×	14	927

Countries citing papers authored by Ann Orren

Since Specialization

Citations

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

Fields of papers citing papers by Ann Orren

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Ann Orren

This figure shows the co-authorship network connecting the top 25 collaborators of Ann Orren. A scholar is included among the top collaborators of Ann Orren 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 Ann Orren. Ann Orren 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

Franco‐Jarava, Clara, David Comas, Ann Orren, M. Hernández, & Roger Colobrán. (2017). Complement factor 5 (C5) p.A252T mutation is prevalent in, but not restricted to, sub-Saharan Africa: implications for the susceptibility to meningococcal disease. Clinical & Experimental Immunology. 189(2). 226–231. 5 indexed citations

Owen, E., Reinhard Würzner, Felicity Leisegang, et al.. (2014). A complement C5 gene mutation, c.754G>A:p.A252T, is common in the Western Cape, South Africa and found to be homozygous in seven percent of Black African meningococcal disease cases. Molecular Immunology. 64(1). 170–176. 14 indexed citations

Thomas, Andrew D., Ann Orren, J J Connaughton, et al.. (2011). Characterization of a large genomic deletion in four Irish families with C7 deficiency. Molecular Immunology. 50(1-2). 57–59. 2 indexed citations

Roberts, Andrew, Andrew D. Thomas, Reinhard Würzner, et al.. (2007). Prevalence of mutations leading to complete C6 deficiency (C6Q0) in the Western Cape, South Africa and detection of novel mutations leading to C6Q0 in an Irish family. Molecular Immunology. 44(10). 2756–2760. 16 indexed citations

Orren, Ann, Ann M. O’Hara, B. Paul Morgan, Anthony P. Moran, & Reinhard Würzner. (2003). An abnormal but functionally active complement component C9 protein found in an Irish family with subtotal C9 deficiency. Immunology. 108(3). 384–390. 5 indexed citations

Orren, Ann. (2003). Screening for Complement Deficiency. Humana Press eBooks. 150. 139–158. 1 indexed citations

O’Hara, Ann M., Anthony P. Moran, Reinhard Würzner, & Ann Orren. (2001). Complement‐mediated lipopolysaccharide release and outer membrane damage in Escherichia coli J5: requirement for C9. Immunology. 102(3). 365–372. 22 indexed citations

Hobart, M. J., et al.. (1998). The molecular basis of C6 deficiency in the western Cape, South Africa. Human Genetics. 103(4). 506–512. 28 indexed citations

Hobart, M. J., et al.. (1998). Heterogeneity in the genetic basis of human complement C9 deficiency. Immunogenetics. 48(2). 144–147. 14 indexed citations

10.

Fernie, B A, et al.. (1997). Molecular bases of C7 deficiency: three different defects. The Journal of Immunology. 159(2). 1019–1026. 30 indexed citations

11.

Fernie, B A, Reinhard Würzner, Ann Orren, et al.. (1996). Molecular bases of combined subtotal deficiencies of C6 and C7: their effects in combination with other C6 and C7 deficiencies. The Journal of Immunology. 157(8). 3648–3657. 29 indexed citations

12.

Würzner, Reinhard, Alexander E. Platonov, Alexei Pereverzev, et al.. (1996). How partial C7 deficiency with chronic and recurrent bacterial infections can mimic total C7 deficiency: temporary restoration of host C7 levels following plasma transfusion. Immunology. 88(3). 407–411. 18 indexed citations

13.

Fernie, B A, Reinhard Würzner, Ann Orren, & M. J. Hobart. (1996). A new intronic polymorphism in the C7 gene 36 bp from the common expressed C7 M/N polymorphism. Annals of Human Genetics. 60(2). 179–182. 9 indexed citations

14.

Würzner, Reinhard, M. J. Hobart, B A Fernie, et al.. (1995). Molecular basis of subtotal complement C6 deficiency. A carboxy-terminally truncated but functionally active C6.. Journal of Clinical Investigation. 95(4). 1877–1883. 37 indexed citations

15.

Fernie, B A, Ann Orren, Reinhard Würzner, et al.. (1995). Complement component C6 and C7 haplotypes associated with deficiencies of C6. Annals of Human Genetics. 59(2). 183–195. 12 indexed citations

16.

Hobart, M. J., et al.. (1994). C6 haplotypes: associations of a Dde I site polymorphism to complement deficiency genes and the Msp I restriction fragment length polymorphism (RFLP). Clinical & Experimental Immunology. 95(2). 351–356. 6 indexed citations

17.

Potter, Paul C., et al.. (1993). Association of a 12.5-kilobase allele of the MspI restriction fragment length polymorphism of the C6 gene in patients with total deficiency of the sixth component of complement.. PubMed. 10(1). 38–44. 9 indexed citations

18.

Lehner, Paul J., José L. Cohen, Kevin Davies, et al.. (1992). Meningococcal septicaemia in a C6-deficient patient and effects of plasma transfusion on lipopolysaccharide release. The Lancet. 340(8832). 1379–1381. 59 indexed citations

19.

Orren, Ann, Reinhard Würzner, Paul C. Potter, et al.. (1992). Properties of a low molecular weight complement component C6 found in human subjects with subtotal C6 deficiency.. PubMed. 75(1). 10–6. 29 indexed citations

20.

Potter, Paul C., et al.. (1990). Prophylaxis against Neisseria meningitidis Infections and Antibody Responses in Patients with Deficiency of the Sixth Component of Complement. The Journal of Infectious Diseases. 161(5). 932–937. 47 indexed citations

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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