Thomas O’Leary

829 total citations
27 papers, 562 citations indexed

About

Thomas O’Leary is a scholar working on Public Health, Environmental and Occupational Health, Pediatrics, Perinatology and Child Health and Molecular Biology. According to data from OpenAlex, Thomas O’Leary has authored 27 papers receiving a total of 562 indexed citations (citations by other indexed papers that have themselves been cited), including 14 papers in Public Health, Environmental and Occupational Health, 11 papers in Pediatrics, Perinatology and Child Health and 9 papers in Molecular Biology. Recurrent topics in Thomas O’Leary's work include Reproductive Biology and Fertility (10 papers), Assisted Reproductive Technology and Twin Pregnancy (10 papers) and Pluripotent Stem Cells Research (9 papers). Thomas O’Leary is often cited by papers focused on Reproductive Biology and Fertility (10 papers), Assisted Reproductive Technology and Twin Pregnancy (10 papers) and Pluripotent Stem Cells Research (9 papers). Thomas O’Leary collaborates with scholars based in United States, Belgium and Netherlands. Thomas O’Leary's co-authors include L. Scott, Björn Heindryckx, Petra De Sutter, Susana M. Chuva de Sousa Lopes, Joseph A. Hill, Sylvie Lierman, Dieter Deforce, Katharine V. Jackson, Catherine Racowsky and Margot Van der Jeught and has published in prestigious journals such as Nature Biotechnology, Nature Protocols and Human Reproduction.

In The Last Decade

Thomas O’Leary

25 papers receiving 549 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Thomas O’Leary United States 12 323 310 208 173 41 27 562
Masaya Yamanaka Japan 12 267 0.8× 154 0.5× 103 0.5× 142 0.8× 22 0.5× 34 379
G. Giritharan United States 11 377 1.2× 332 1.1× 298 1.4× 140 0.8× 102 2.5× 22 680
Federica Innocenti Italy 11 246 0.8× 104 0.3× 185 0.9× 157 0.9× 35 0.9× 27 397
Sophie Loubersac France 5 150 0.5× 376 1.2× 78 0.4× 51 0.3× 52 1.3× 12 506
D. Smotrich United States 10 277 0.9× 137 0.4× 245 1.2× 258 1.5× 85 2.1× 16 547
José V. Medrano Spain 14 383 1.2× 557 1.8× 98 0.5× 313 1.8× 229 5.6× 25 788
Martin A. George United Kingdom 13 350 1.1× 251 0.8× 96 0.5× 192 1.1× 78 1.9× 18 482
Cristina Lagalla Italy 13 552 1.7× 230 0.7× 386 1.9× 304 1.8× 68 1.7× 23 675
En‐Hui Cheng Taiwan 11 298 0.9× 99 0.3× 333 1.6× 145 0.8× 91 2.2× 31 517
J. Gebhardt United States 9 427 1.3× 137 0.4× 263 1.3× 310 1.8× 23 0.6× 25 516

Countries citing papers authored by Thomas O’Leary

Since Specialization
Citations

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

Fields of papers citing papers by Thomas O’Leary

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Thomas O’Leary. 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 Thomas O’Leary. The network helps show where Thomas O’Leary may publish in the future.

Co-authorship network of co-authors of Thomas O’Leary

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

All Works

20 of 20 papers shown
1.
Garg, Bharti, Stephanie Powell, Thomas O’Leary, et al.. (2025). Patients with a body mass index of ≥45 kg/m2 can safely undergo oocyte retrievals and anticipate similar assisted reproductive technology outcomes. Fertility and Sterility. 124(3). 468–477. 1 indexed citations
2.
O’Leary, Thomas, et al.. (2024). UNDERSTANDING THE UNTAPPED POTENTIAL OF CHAOTIC EMBRYOS: A SINGLE SITE’S EXPERIENCE. Fertility and Sterility. 122(4). e279–e280. 1 indexed citations
3.
Garg, Bharti, Thomas O’Leary, Maureen K. Baldwin, et al.. (2024). Unhealthy air quality secondary to wildfires is associated with lower blastocyst yield. Fertility and Sterility. 121(5). 842–852. 4 indexed citations
4.
O’Leary, Thomas, et al.. (2023). Mifepristone-misoprostol combination treatment for early pregnancy loss after embryo transfer: a case series. F&S Reports. 4(1). 93–97. 2 indexed citations
5.
6.
Garg, Bharti, Diana Wu, David Lee, et al.. (2021). WILDFIRE SMOKE EXPOSURE IS ASSOCIATED WITH DECREASED TOTAL MOTILE SPERM COUNT. Fertility and Sterility. 116(3). e89–e89. 2 indexed citations
7.
Masterson, Keith, et al.. (2020). Conditions to optimise the developmental competence of immature equine oocytes*. Reproduction Fertility and Development. 32(11). 1012–1021. 11 indexed citations
8.
Siegel, Molly, Bharti Garg, Paula Amato, et al.. (2020). OBESITY DOES NOT IMPACT ANEUPLOIDY RATES OR MITOCHONDRIAL DNA COPY NUMBER IN PATIENTS UNDERGOING PREIMPLANTATION GENETIC TESTING FOR ANEUPLOIDY. Fertility and Sterility. 114(3). e485–e485. 1 indexed citations
9.
Ghimire, Sabitri, Björn Heindryckx, Margot Van der Jeught, et al.. (2014). Inhibition of Transforming Growth Factor β Signaling Promotes Epiblast Formation in Mouse Embryos. Stem Cells and Development. 24(4). 497–506. 12 indexed citations
10.
O’Leary, Thomas, Björn Heindryckx, Sylvie Lierman, et al.. (2013). Derivation of human embryonic stem cells using a post–inner cell mass intermediate. Nature Protocols. 8(2). 254–264. 22 indexed citations
11.
Jeught, Margot Van der, Björn Heindryckx, Thomas O’Leary, et al.. (2013). Treatment of human embryos with the TGF  inhibitor SB431542 increases epiblast proliferation and permits successful human embryonic stem cell derivation. Human Reproduction. 29(1). 41–48. 24 indexed citations
12.
Jeught, Margot Van der, Thomas O’Leary, Sabitri Ghimire, et al.. (2012). The Combination of Inhibitors of FGF/MEK/Erk and GSK3β Signaling Increases the Number of OCT3/4- and NANOG-Positive Cells in the Human Inner Cell Mass, But Does Not Improve Stem Cell Derivation. Stem Cells and Development. 22(2). 296–306. 24 indexed citations
13.
O’Leary, Thomas, Björn Heindryckx, Sylvie Lierman, et al.. (2012). Tracking the progression of the human inner cell mass during embryonic stem cell derivation. Nature Biotechnology. 30(3). 278–282. 97 indexed citations
14.
O’Leary, Thomas, Galbha Duggal, Sylvie Lierman, et al.. (2012). The influence of patient and cohort parameters on the incidence and developmental potential of embryos with poor quality traits for use in human embryonic stem cell derivation. Human Reproduction. 27(6). 1581–1589. 10 indexed citations
15.
Jeught, Margot Van der, Thomas O’Leary, Galbha Duggal, et al.. (2012). Effect of Small Molecule Supplements during In Vitro Culture of Mouse Zygotes and Parthenogenetic Embryos on Hypoblast Formation and Stem Cell Derivation. Stem Cell Reviews and Reports. 8(4). 1088–1097. 1 indexed citations
16.
Heindryckx, Björn, Thomas O’Leary, Ilse De Croo, et al.. (2011). Slow controlled-rate freezing of human in vitro matured oocytes: effects on maturation rate and kinetics and parthenogenetic activation. Fertility and Sterility. 96(3). 624–628. 15 indexed citations
17.
O’Leary, Thomas, Björn Heindryckx, Sylvie Lierman, et al.. (2010). The Influence of Early Embryo Traits on Human Embryonic Stem Cell Derivation Efficiency. Stem Cells and Development. 20(5). 785–793. 20 indexed citations
18.
Jun, Sunny H., Thomas O’Leary, Katharine V. Jackson, & Catherine Racowsky. (2006). Benefit of intracytoplasmic sperm injection in patients with a high incidence of triploidy in a prior in vitro fertilization cycle. Fertility and Sterility. 86(4). 825–829. 16 indexed citations
19.
20.
Racowsky, Catherine, et al.. (2003). Day 3 and day 5 morphological predictors of embryo viability. Reproductive BioMedicine Online. 6(3). 323–331. 123 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.

Explore authors with similar magnitude of impact

Breakdown of academic impact, for papers by Masaya Yamanaka Breakdown of academic impact, for papers by G. Giritharan Breakdown of academic impact, for papers by Federica Innocenti Breakdown of academic impact, for papers by Sophie Loubersac Breakdown of academic impact, for papers by D. Smotrich Breakdown of academic impact, for papers by José V. Medrano Breakdown of academic impact, for papers by Martin A. George Breakdown of academic impact, for papers by Cristina Lagalla Breakdown of academic impact, for papers by En‐Hui Cheng Breakdown of academic impact, for papers by J. Gebhardt
Rankless by CCL
2026