Christopher A. Callahan

5.5k total citations · 3 hit papers
18 papers, 3.6k citations indexed

About

Christopher A. Callahan is a scholar working on Molecular Biology, Cellular and Molecular Neuroscience and Genetics. According to data from OpenAlex, Christopher A. Callahan has authored 18 papers receiving a total of 3.6k indexed citations (citations by other indexed papers that have themselves been cited), including 15 papers in Molecular Biology, 7 papers in Cellular and Molecular Neuroscience and 5 papers in Genetics. Recurrent topics in Christopher A. Callahan's work include Hedgehog Signaling Pathway Studies (8 papers), Neurobiology and Insect Physiology Research (5 papers) and Developmental Biology and Gene Regulation (5 papers). Christopher A. Callahan is often cited by papers focused on Hedgehog Signaling Pathway Studies (8 papers), Neurobiology and Insect Physiology Research (5 papers) and Developmental Biology and Gene Regulation (5 papers). Christopher A. Callahan collaborates with scholars based in United States, United Kingdom and France. Christopher A. Callahan's co-authors include Frédéric J. de Sauvage, John B. Thomas, M. Armstrong‐James, Robert L. Yauch, Stephen E. Gould, Charles M. Rudin, Jeremy Stinson, Jennifer A. Low, Christine L. Hann and Thomas Holcomb and has published in prestigious journals such as Nature, Science and New England Journal of Medicine.

In The Last Decade

Christopher A. Callahan

18 papers receiving 3.5k 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.

Inhibition of Dll4 signalling inhibits tumour growth by deregulating angiogenesis

2006 765 citations John Brady Ridgway, Gu Zhang et al. Nature profile →
Treatment of Medulloblastoma with Hedgehog Pathway Inhibitor GDC-0449

2009 761 citations Charles M. Rudin, Christine L. Hann et al. New England Journal of Medicine profile →
Smoothened Mutation Confers Resistance to a Hedgehog Pathway Inhibitor in Medulloblastoma

2009 670 citations Robert L. Yauch, Gerrit J.P. Dijkgraaf et al. Science profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Christopher A. Callahan United States	16	2.9k	816	574	410	372	18	3.6k
Ruthild G. Weber Germany	33	2.0k 0.7×	477 0.6×	247 0.4×	859 2.1×	927 2.5×	72	3.7k
Nadia Dahmane United States	31	3.9k 1.3×	779 1.0×	317 0.6×	974 2.4×	894 2.4×	66	5.3k
Cláudia Gaspar Canada	29	2.1k 0.7×	709 0.9×	753 1.3×	298 0.7×	276 0.7×	54	3.3k
An Zwijsen Belgium	35	3.4k 1.2×	357 0.4×	312 0.5×	454 1.1×	457 1.2×	87	4.7k
Violeta Silva-Vargas United States	16	2.0k 0.7×	595 0.7×	605 1.1×	208 0.5×	445 1.2×	17	3.7k
Amin Fazeli United States	10	2.7k 0.9×	1.7k 2.0×	926 1.6×	493 1.2×	153 0.4×	11	4.1k
Marko Rehn Finland	30	2.0k 0.7×	742 0.9×	173 0.3×	260 0.6×	141 0.4×	53	3.2k
Rebecca A. Ihrie United States	25	1.5k 0.5×	449 0.6×	476 0.8×	239 0.6×	470 1.3×	54	2.7k
Della Yee United States	25	3.4k 1.2×	518 0.6×	393 0.7×	864 2.1×	88 0.2×	36	4.4k
Giorgio Corte Italy	38	2.7k 0.9×	836 1.0×	525 0.9×	501 1.2×	528 1.4×	69	4.3k

Countries citing papers authored by Christopher A. Callahan

Since Specialization

Citations

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

Fields of papers citing papers by Christopher A. Callahan

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Christopher A. Callahan. 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 Christopher A. Callahan. The network helps show where Christopher A. Callahan may publish in the future.

Co-authorship network of co-authors of Christopher A. Callahan

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

All Works

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18 of 18 papers shown

Jubb, Adrian M., Navneet Ratti, Laura A Strickland, et al.. (2012). Neuropilin‐2 expression in cancer. Histopathology. 61(3). 340–349. 29 indexed citations

Tang, Tracy, Jean Y. Tang, Dongwei Li, et al.. (2011). Targeting Superficial or Nodular Basal Cell Carcinoma with Topically Formulated Small Molecule Inhibitor of Smoothened. Clinical Cancer Research. 17(10). 3378–3387. 53 indexed citations

Chen, Weiwei, Tracy Tang, Jeff Eastham-Anderson, et al.. (2011). Canonical hedgehog signaling augments tumor angiogenesis by induction of VEGF-A in stromal perivascular cells. Proceedings of the National Academy of Sciences. 108(23). 9589–9594. 93 indexed citations

Yauch, Robert L., Gerrit J.P. Dijkgraaf, Bruno Alicke, et al.. (2009). Smoothened Mutation Confers Resistance to a Hedgehog Pathway Inhibitor in Medulloblastoma. Science. 326(5952). 572–574. 670 indexed citations breakdown →

Tian, Hua, Christopher A. Callahan, Kelly DuPree, et al.. (2009). Hedgehog signaling is restricted to the stromal compartment during pancreatic carcinogenesis. Proceedings of the National Academy of Sciences. 106(11). 4254–4259. 332 indexed citations

Rudin, Charles M., Christine L. Hann, John Laterra, et al.. (2009). Treatment of Medulloblastoma with Hedgehog Pathway Inhibitor GDC-0449. New England Journal of Medicine. 361(12). 1173–1178. 761 indexed citations breakdown →

Yauch, Robert L., Thomas Januario, Ling Fu, et al.. (2009). Abstract A44: Predictive biomarkers of efficacy to the hedgehog pathway inhibitor, GDC-0449, in advanced basal cell carcinoma and medulloblastoma in phase I studies. Molecular Cancer Therapeutics. 8(12_Supplement). A44–A44. 1 indexed citations

Yan, Minhong, John Brady Ridgway, Gu Zhang, et al.. (2007). Blocking of DLL4/Notch signaling deregulates tumor angiogenesis. Cancer Research. 67. 1621–1621. 1 indexed citations

Ridgway, John Brady, Gu Zhang, Yan Wu, et al.. (2006). Inhibition of Dll4 signalling inhibits tumour growth by deregulating angiogenesis. Nature. 444(7122). 1083–1087. 765 indexed citations breakdown →

10.

Callahan, Christopher A., Tyler Ofstad, Lily Horng, et al.. (2004). MIM/BEG4, a Sonic hedgehog-responsive gene that potentiates Gli-dependent transcription. Genes & Development. 18(22). 2724–2729. 128 indexed citations

11.

Callahan, Christopher A. & Anthony E. Oro. (2001). Monstrous attempts at adnexogenesis: regulating hair follicle progenitors through Sonic hedgehog signaling. Current Opinion in Genetics & Development. 11(5). 541–546. 65 indexed citations

12.

Callahan, Christopher A., Shingo Yoshikawa, & John B. Thomas. (1998). Tracing axons. Current Opinion in Neurobiology. 8(5). 582–586. 25 indexed citations

13.

Callahan, Christopher A., et al.. (1996). derailed is required for muscle attachment site selection in Drosophila. Development. 122(9). 2761–2767. 70 indexed citations

14.

Callahan, Christopher A., et al.. (1995). Control of neuronal pathway selection by a Drosophila receptor protein-tyrosine kinase family member. Nature. 376(6536). 171–174. 151 indexed citations

15.

Callahan, Christopher A., et al.. (1995). Control of neuronal pathway selection by the Drosophila LIM homeodomain gene apterous. Development. 121(6). 1769–1773. 171 indexed citations

16.

Callahan, Christopher A., et al.. (1993). Single-minded regulation of genes in the embryonic midline of the Drosophila central nervous system. Mechanisms of Development. 41(2-3). 129–138. 32 indexed citations

17.

Armstrong‐James, M. & Christopher A. Callahan. (1991). Thalamo‐cortical processing of vibrissal information in the rat. II. Spatiotemporal convergence in the thalamic ventroposterior medial nucleus (VPm) and its relevance to generation of receptive fields of S1 cortical “Barrel” neurones. The Journal of Comparative Neurology. 303(2). 211–224. 126 indexed citations

18.

Armstrong‐James, M., Christopher A. Callahan, & Michael Friedman. (1991). Thalamo‐cortical processing of vibrissal information in the rat. I. Intracortical origins of surround but not centre‐receptive fields of layer IV neurones in the rat S1 barrel field cortex. The Journal of Comparative Neurology. 303(2). 193–210. 132 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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