Sandra Close

6.9k total citations · 5 hit papers
39 papers, 4.7k citations indexed

About

Sandra Close is a scholar working on Cardiology and Cardiovascular Medicine, Surgery and Oncology. According to data from OpenAlex, Sandra Close has authored 39 papers receiving a total of 4.7k indexed citations (citations by other indexed papers that have themselves been cited), including 16 papers in Cardiology and Cardiovascular Medicine, 11 papers in Surgery and 11 papers in Oncology. Recurrent topics in Sandra Close's work include Antiplatelet Therapy and Cardiovascular Diseases (15 papers), Lipoproteins and Cardiovascular Health (10 papers) and Cancer Genomics and Diagnostics (10 papers). Sandra Close is often cited by papers focused on Antiplatelet Therapy and Cardiovascular Diseases (15 papers), Lipoproteins and Cardiovascular Health (10 papers) and Cancer Genomics and Diagnostics (10 papers). Sandra Close collaborates with scholars based in United States, Germany and South Korea. Sandra Close's co-authors include Stephen D. Wiviott, Jessica L. Mega, Marc S. Sabatine, Elliott M. Antman, John T. Brandt, Joseph R. Walker, Eugene Braunwald, Richard D. Hockett, William L. Macias and Lei Shen and has published in prestigious journals such as New England Journal of Medicine, The Lancet and Circulation.

In The Last Decade

Sandra Close

36 papers receiving 4.6k citations

Hit Papers

5 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.

Cytochrome P-450 Polymorphisms and Response to Clopidogrel

2008 1.7k citations Jessica L. Mega, Sandra Close et al. profile →
Common polymorphisms of CYP2C19 and CYP2C9 affect the pharmacokinetic and pharmacodynamic response to clopidogrel but not prasugrel

2007 553 citations John T. Brandt, Sandra Close et al. Journal of Thrombosis and Haemostasis profile →
Pharmacodynamic effect and clinical efficacy of clopidogrel and prasugrel with or without a proton-pump inhibitor: an analysis of two randomised trials

2009 500 citations Eugene Braunwald, Elliott M. Antman et al. profile →
Cytochrome P450 Genetic Polymorphisms and the Response to Prasugrel

2009 467 citations Jessica L. Mega, Sandra Close et al. Circulation profile →
Genetic variants in ABCB1 and CYP2C19 and cardiovascular outcomes after treatment with clopidogrel and prasugrel in the TRITON–TIMI 38 trial: a pharmacogenetic analysis

2010 437 citations Jessica L. Mega, Sandra Close et al. profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Sandra Close United States	17	3.5k	1.7k	980	931	775	39	4.7k
Joseph R. Walker United States	14	2.5k 0.7×	1.2k 0.7×	765 0.8×	610 0.7×	572 0.7×	27	3.1k
Vera H.M. Deneer Netherlands	31	1.9k 0.5×	1.1k 0.6×	408 0.4×	730 0.8×	505 0.7×	88	4.5k
Joseph A. Jakubowski United States	48	7.1k 2.0×	3.6k 2.1×	904 0.9×	977 1.0×	2.2k 2.8×	145	8.6k
Dietmar Trenk Germany	31	4.4k 1.3×	2.2k 1.3×	562 0.6×	562 0.6×	1.1k 1.5×	161	5.3k
Rita Paniccia Italy	34	3.1k 0.9×	1.5k 0.9×	515 0.5×	559 0.6×	1.1k 1.5×	100	4.4k
Giulia Renda Italy	27	1.9k 0.5×	746 0.4×	276 0.3×	610 0.7×	350 0.5×	111	3.5k
Christopher D. Payne United States	29	2.8k 0.8×	1.3k 0.8×	635 0.6×	631 0.7×	777 1.0×	45	3.5k
Willibald Hochholzer Germany	34	5.4k 1.5×	2.2k 1.3×	530 0.5×	409 0.4×	811 1.0×	103	6.2k
Francesca Catella-Lawson United States	11	1.3k 0.4×	518 0.3×	145 0.1×	2.1k 2.3×	292 0.4×	15	3.1k
Danielle M. Brennan United States	38	2.4k 0.7×	2.8k 1.7×	890 0.9×	244 0.3×	353 0.5×	90	5.4k

Countries citing papers authored by Sandra Close

Since Specialization

Citations

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

Fields of papers citing papers by Sandra Close

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Sandra Close

This figure shows the co-authorship network connecting the top 25 collaborators of Sandra Close. A scholar is included among the top collaborators of Sandra Close 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 Sandra Close. Sandra Close 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:

20 of 20 papers shown

Roschewski, Mark, David M. Kurtz, Jason R. Westin, et al.. (2025). Remission Assessment by Circulating Tumor DNA in Large B-Cell Lymphoma. Journal of Clinical Oncology. 43(34). 3652–3661.

Goldstein, Jordan, Mark Roschewski, Won-Seog Kim, et al.. (2024). Baseline Prognostic Factors Do Not Predict End of Treatment Ctdna MRD Status and Have Limited Impact on MRD Prognostic Performance in DLBCL. Blood. 144(Supplement 1). 651–651.

Roschewski, Mark, David M. Kurtz, Jason R. Westin, et al.. (2023). MRD‐NEGATIVITY AFTER FRONTLINE DLBCL THERAPY: POOLED ANALYSIS OF 6 CLINICAL TRIALS. Hematological Oncology. 41(S2). 177–179. 5 indexed citations

Nagy, Ákos, Gregory J. Hogan, Jacob J. Chabon, et al.. (2023). Phased Variants Allow Robust Profiling of Circulating Tumor DNA in Untreated Follicular Lymphomas. Blood. 142(Supplement 1). 1626–1626. 1 indexed citations

Mok, Tony, Sarayut Lucien Geater, Wu‐Chou Su, et al.. (2016). A Randomized Phase 2 Study Comparing the Combination of Ficlatuzumab and Gefitinib with Gefitinib Alone in Asian Patients with Advanced Stage Pulmonary Adenocarcinoma. Journal of Thoracic Oncology. 11(10). 1736–1744. 41 indexed citations

Close, Sandra, Michael Man, Scott S. Sundseth, et al.. (2015). PON1 Q192R genetic variant and response to clopidogrel and prasugrel: pharmacokinetics, pharmacodynamics, and a meta-analysis of clinical outcomes. Journal of Thrombosis and Thrombolysis. 41(3). 374–383. 22 indexed citations

Close, Sandra. (2011). Clopidogrel pharmacogenetics: metabolism and drug interactions. Drug metabolism and drug interactions. 26(2). 45–51. 13 indexed citations

Jakubowski, Joseph A., et al.. (2011). TRITON and Beyond: New Insights into the Profile of Prasugrel. Cardiovascular Therapeutics. 30(4). e174–82. 13 indexed citations

Mega, Jessica L., Sandra Close, Stephen D. Wiviott, et al.. (2011). Abstract 11255: PON1 Q192R (rs662) Genetic Variant and Response to Clopidogrel and Prasugrel. Circulation. 124. 101–12. 1 indexed citations

10.

Kelly, Ronan P., Sandra Close, Nagy A. Farid, et al.. (2011). Pharmacokinetics and pharmacodynamics following maintenance doses of prasugrel and clopidogrel in Chinese carriers of CYP2C19 variants. British Journal of Clinical Pharmacology. 73(1). 93–105. 42 indexed citations

11.

Mega, Jessica L., Sandra Close, Stephen D. Wiviott, et al.. (2010). ABCB1 GENETIC VARIANTS, PHARMACODYNAMIC RESPONSE, AND CARDIOVASCULAR OUTCOMES FOLLOWING TREATMENT WITH CLOPIDOGREL AND PRASUGREL. Journal of the American College of Cardiology. 55(10). A113.E1056–A113.E1056. 4 indexed citations

12.

Man, Michael, Mark W. Farmen, Carmen M. Dumaual, et al.. (2010). Genetic Variation in Metabolizing Enzyme and Transporter Genes: Comprehensive Assessment in 3 Major East Asian Subpopulations With Comparison to Caucasians and Africans. The Journal of Clinical Pharmacology. 50(8). 929–940. 170 indexed citations

13.

Hockett, Richard D. & Sandra Close. (2010). Regulation of Laboratory-Developed Tests: The Case for Utilizing Professional Associations. Clinical Pharmacology & Therapeutics. 88(6). 743–745. 8 indexed citations

14.

Mega, Jessica L., Sandra Close, & Stephen D. Wiviott. (2009). Cytochrome P-450 Polymorphisms and Response to Clopidogrel. Journal of Vascular Surgery. 49(4). 1083–1083. 5 indexed citations

15.

Varenhorst, Christoph, Stefan James, David Erlinge, et al.. (2009). Genetic variation of CYP2C19 affects both pharmacokinetic and pharmacodynamic responses to clopidogrel but not prasugrel in aspirin-treated patients with coronary artery disease. European Heart Journal. 30(14). 1744–1752. 191 indexed citations

16.

Sullivan, Patrick F., D. Y. Lin, Edwin van den Oord, et al.. (2008). Genomewide association for schizophrenia in the CATIE study: results of stage 1. Molecular Psychiatry. 13(6). 570–584. 265 indexed citations

17.

Adams, David H., et al.. (2008). Dopamine receptor D3 genotype association with greater acute positive symptom remission with olanzapine therapy in predominately caucasian patients with chronic schizophrenia or schizoaffective disorder. Human Psychopharmacology Clinical and Experimental. 23(4). 267–274. 31 indexed citations

18.

Bromley, Christina M., Sandra Close, Nadine Cohen, et al.. (2008). Designing pharmacogenetic projects in industry: practical design perspectives from the Industry Pharmacogenomics Working Group. The Pharmacogenomics Journal. 9(1). 14–22. 14 indexed citations

19.

Brandt, John T., Sandra Close, Stephen J. Iturria, et al.. (2007). Common polymorphisms of CYP2C19 and CYP2C9 affect the pharmacokinetic and pharmacodynamic response to clopidogrel but not prasugrel. Journal of Thrombosis and Haemostasis. 5(12). 2429–2436. 553 indexed citations breakdown →

20.

Counsell, David, et al.. (1997). Audit of opioid prescribing: the effect of hospital guidelines. Anaesthesia. 52(8). 745–749. 17 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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