To visualized analysis the overall trend of immunotherapy for gallbladder cancer by scientometrics.

Relevant studies (articles or reviews) related to immunotherapy for gallbladder cancer were searched in the Web of Science Core Collection (WoSCC) database from January 1, 2000 to December 31, 2021, and input into VOSviewer 1.6.18.0 and CiteSpace 5.1.R8 SE (32-bit) software in plain-text format. All data were processed by using scientometrics. Authors, countries, institutions, highly cited publication, co-citation, keywords and references were subject to visualization analysis, and the research hotspots and trends were obtained.

121 studies were retrieved, including 860 authors, 306 institutions, 21 countries/regions and 82 journals. The data showed that the United States was the country with the largest number of published articles in the field of immunotherapy for gallbladder cancer (n=40), followed by China (n=36) and Japan (n=14). The top three authors with the largest number of published articles were Valle JW (n=5), Javle M (n=4) and Zhu AX (n=4). Chinese Academy of Medical Sciences (Peking Union Medical College), Christie NHS Foundation Trust, Nanjing Medical University and the University of Manchester were the institutions with the largest number of published articles. Cancers was the journal with the largest number of published articles in this field. Keyword analysis indicated that "immunotherapy", "cholangiocarcinoma" and "gallbladder cancer" were the high-frequency keywords. Current research hotspots gradually focused on immunotherapy, targeted therapy and drug use for gallbladder cancer.

In recent 21 years, the number of published articles in the field of immunotherapy for gallbladder cancer has been gradually increased, which has become a potential hotspot. The United States, China and Japan occupy a central position in this field.