Tomofumi Ishikawa

694 citations

34 papers · 524 indexed · h-index 13

Co-authors: Masahiko Yamaguchi Takaaki Suzuki Mieko Arisawa Taku Obara Nariyasu Mano Hidekazu Nishigori Nobuo Yaegashi Keiko Miyakoda
Topics: Pregnancy and Medication Impact (13 papers)Maternal Mental Health During Pregnancy and Postpartum (7 papers)Pregnancy and preeclampsia studies (6 papers)
Cited by: Pharmaceutical Science Obstetrics and Gynecology Organic Chemistry
Journals: Journal of the American Chemical SocietySHILAP Revista de lepidopterologíaAnnals of Oncology
Partner nations: Japan United States Canada

In The Last Decade

Tomofumi Ishikawa

29 papers receiving 518 citations

Peers

Countries citing papers authored by Tomofumi Ishikawa

Since Specialization

Citations

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

Fields of papers citing papers by Tomofumi Ishikawa

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Tomofumi Ishikawa

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

#	Work	Indexed citations
1	Efficacy and safety of rimegepant for the preventive treatment of migraine in Japan: A double‐blind, randomized controlled trial 2025 ·Headache The Journal of Head and Face Pain ·(unknown),Yasuhiko Matsumori,(unknown),Tomofumi Ishikawa,(unknown),Hiroki‎ Yoshimatsu,Alexandra Thiry,(unknown),Robert Croop,Terence Fullerton,Fumihiko Sakai,Takao Takeshima	3
2	Plain Language Summary Publication: Efficacy and safety of rimegepant for the preventive treatment of migraine in Japan: A double‐blind, randomized controlled trial 2025 ·Headache The Journal of Head and Face Pain ·(unknown),Yasuhiko Matsumori,(unknown),Tomofumi Ishikawa,(unknown),Hiroki‎ Yoshimatsu,Alexandra Thiry,(unknown),Robert Croop,Terence Fullerton,Fumihiko Sakai,Takao Takeshima	0
3	Efficacy and safety of rimegepant for the acute treatment of migraine in Japan: A dose‐ranging, double‐blind, randomized controlled trial 2025 ·Headache The Journal of Head and Face Pain ·Koichi Ikeda,Yasuhiko Matsumori,Masako Kudo,Tomofumi Ishikawa,Yuko Hoshino,Hiroki‎ Yoshimatsu,Alexandra Thiry,(unknown),Robert Croop,Terence Fullerton,Fumihiko Sakai,Takao Takeshima	2
4	Association of Quinolone Exposure in the First‐Trimester of Pregnancy and the Risk of Major Congenital Malformations: A Health Administrative Database Study in Japan 2025 ·Pharmacoepidemiology and Drug Safety ·(unknown),Taku Obara,Tomofumi Ishikawa,(unknown),(unknown),Noriyuki Iwama,(unknown),Aoi Noda,Masatsugu Orui,Mami Ishikuro,Hiroshi Kawame,Nariyasu Mano,Shinichi Kuriyama	0
5	Prescribing in pregnant women with inflammatory bowel disease and its relationship to congenital malformations in Japan 2024 ·Journal of Gastroenterology and Hepatology ·S Takahashi,Yoichi Kakuta,Taku Obara,Tomofumi Ishikawa,(unknown),(unknown),Takeo Naito,Rintaro Moroi,Hisashi Shiga,Nariyasu Mano,Yoshitaka Kinouchi,Atsushi Masamune	3
6	Association between exposure to atypical antipsychotics during pregnancy and risk of miscarriage 2024 ·Acta Psychiatrica Scandinavica ·Tomofumi Ishikawa,(unknown),Noriyuki Iwama,(unknown),(unknown),(unknown),Aoi Noda,Mami Ishikuro,Saya Kikuchi,Natsuko Kobayashi,Hiroaki Tomita,(unknown),Hidekazu Nishigori,Shinichi Kuriyama,Nariyasu Mano,Taku Obara	2
7	Real‐world prevalence, time of diagnosis, and co‐occurrence patterns of birth defects in live‐born infants, 2014–2020: A health administrative database study in Japan 2023 ·Birth Defects Research ·Tomofumi Ishikawa,Hiroshi Kawame,Nariyasu Mano,Taku Obara	4
8	Risk of major congenital malformations associated with first-trimester antihypertensives, including amlodipine and methyldopa: A large claims database study 2010–2019 2023 ·Pregnancy Hypertension ·Tomofumi Ishikawa,Hidekazu Nishigori,Manabu Akazawa,Keiko Miyakoda,Aoi Noda,Mami Ishikuro,Hirohito Metoki,Noriyuki Iwama,Masatoshi Saito,Junichi Sugawara,Hiroshi Kawame,Nobuo Yaegashi,Shinichi Kuriyama,Nariyasu Mano,Taku Obara	14
9	Birth Outcomes of Anticancer Drug Prescriptions during Pregnancy: A Case Series from a Japanese Claims Database 2023 ·SHILAP Revista de lepidopterología ·(unknown),Tomofumi Ishikawa,Masami Tsuchiya,Masafumi Kikuchi,Taku Obara,Nariyasu Mano	0
10	Development and validation of claims-based algorithms to identify pregnancy based on data from a university hospital in Japan 2022 ·Current Medical Research and Opinion ·(unknown),Tomofumi Ishikawa,Aoi Noda,(unknown),(unknown),Ryusuke Inoue,Noriyuki Iwama,Hidekazu Nishigori,Junichi Sugawara,Masatoshi Saito,Taku Obara,Nariyasu Mano	2
11	Validity of Administrative Data for Identifying Birth-Related Outcomes with the End Date of Pregnancy in a Japanese University Hospital 2022 ·International Journal of Environmental Research and Public Health ·(unknown),Tomofumi Ishikawa,(unknown),Aoi Noda,(unknown),Ryusuke Inoue,Noriyuki Iwama,Hidekazu Nishigori,Junichi Sugawara,Masatoshi Saito,Taku Obara,Nariyasu Mano	8
12	Long-Term Safety and Effectiveness of PF-05280014 (a Trastuzumab Biosimilar) Treatment in Patients with HER2-Positive Metastatic Breast Cancer: Updated Results of a Randomized, Double-Blind Study 2022 ·BioDrugs ·Rubi K. Li,Eriko Tokunaga,Hryhoriy Adamchuk,Vladimir Vladimirov,Eduardo Yáñez,Keun Seok Lee,Igor Bondarenko,(unknown),Fiona Hilton,Tomofumi Ishikawa,(unknown),Oleg Lipatov	12
13	Risk of major congenital malformations associated with first‐trimester exposure to propulsives: A health administrative database study in Japan 2021 ·Pharmacoepidemiology and Drug Safety ·Tomofumi Ishikawa,Taku Obara,Manabu Akazawa,Aoi Noda,(unknown),(unknown),Keiko Miyakoda,Hidekazu Nishigori,Hiroshi Kawame,Nobuo Yaegashi,Shinichi Kuriyama,Nariyasu Mano	11
14	Validity of congenital malformation diagnoses in healthcare claims from a university hospital in Japan 2021 ·Pharmacoepidemiology and Drug Safety ·Tomofumi Ishikawa,(unknown),Taku Obara,Aoi Noda,(unknown),(unknown),Ryusuke Inoue,Hiroshi Kawame,Nariyasu Mano	14
15	Real-World Anticancer Medications for Reproductive-Age Women with Breast Cancer by Using a Claims Database in Japan 2021 ·Future Oncology ·(unknown),Masami Tsuchiya,Tomofumi Ishikawa,Taku Obara,Nariyasu Mano	2
16	Folic acid prescribed to prenatal and postpartum women who are also prescribed antiepileptic drugs in Japan: Data from a health administrative database 2020 ·Birth Defects Research ·Tomofumi Ishikawa,Taku Obara,Kazutaka Jin,Hidekazu Nishigori,Keiko Miyakoda,Manabu Akazawa,Nobukazu Nakasato,Nobuo Yaegashi,Shinichi Kuriyama,Nariyasu Mano	6
17	Examination of the prescription of antiepileptic drugs to prenatal and postpartum women in Japan from a health administrative database 2019 ·Pharmacoepidemiology and Drug Safety ·Tomofumi Ishikawa,Taku Obara,Kazutaka Jin,Hidekazu Nishigori,Keiko Miyakoda,(unknown),(unknown),Manabu Akazawa,Nobukazu Nakasato,Nobuo Yaegashi,Shinichi Kuriyama,Nariyasu Mano	30
18	Antihypertensives prescribed for pregnant women in Japan: Prevalence and timing determined from a database of health insurance claims 2018 ·Pharmacoepidemiology and Drug Safety ·Tomofumi Ishikawa,Taku Obara,Hidekazu Nishigori,Keiko Miyakoda,Mami Ishikuro,Hirohito Metoki,Takayoshi Ohkubo,Junichi Sugawara,Nobuo Yaegashi,Manabu Akazawa,Shinichi Kuriyama,Nariyasu Mano	22
19	Update on the prevalence and determinants of folic acid use in Japan evaluated with 91,538 pregnant women: the Japan Environment and Children’s Study 2018 ·The Journal of Maternal-Fetal & Neonatal Medicine ·Tomofumi Ishikawa,Taku Obara,Hidekazu Nishigori,Toshie Nishigori,Hirohito Metoki,Mami Ishikuro,Nozomi Tatsuta,Satoshi Mizuno,Kasumi Sakurai,Ichiko Nishijima,(unknown),Ikuma Fujiwara,Takahiro Arima,Kunihiko Nakai,Nobuo Yaegashi,Shinichi Kuriyama,Nariyasu Mano	14
20	Development of algorithms to determine the onset of pregnancy and delivery date using health care administrative data in a university hospital in Japan 2018 ·Pharmacoepidemiology and Drug Safety ·Tomofumi Ishikawa,Taku Obara,Hidekazu Nishigori,Keiko Miyakoda,Ryusuke Inoue,Tetsuro Hoshiai,Masatoshi Saito,Nobuo Yaegashi,Nariyasu Mano	24

About Tomofumi Ishikawa

Tomofumi Ishikawa is a scholar working on Obstetrics and Gynecology, Public Health, Environmental and Occupational Health and Pediatrics, Perinatology and Child Health, having authored 34 papers that have together received 524 indexed citations. Recurring topics across this work include Pregnancy and Medication Impact (13 papers), Maternal Mental Health During Pregnancy and Postpartum (7 papers) and Pregnancy and preeclampsia studies (6 papers). The work is most often cited by research in Pharmaceutical Science (63 citations), Obstetrics and Gynecology (73 citations) and Organic Chemistry (196 citations). Tomofumi Ishikawa has collaborated with scholars based in Japan, United States and Canada. Frequent co-authors include Masahiko Yamaguchi, Takaaki Suzuki, Mieko Arisawa, Taku Obara, Nariyasu Mano, Hidekazu Nishigori, Nobuo Yaegashi, Keiko Miyakoda, Shinichi Kuriyama and Manabu Akazawa. Their work appears in journals such as Journal of the American Chemical Society, SHILAP Revista de lepidopterología and Annals of Oncology.

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