To the Editor, A longitudinal approach should be employed for research and development (R&D) on allergic and immunological diseases across all life stages. To strategically use limited public funds in promoting such R&D, their characteristics of long-term research support and societal implementation should be considered. 1 However, outcomes of the funding research evaluation have focused on conventional, shortsighted indicators. To determine the kind of indicators needed for the funding strategy, we compared the research impact of funding agencies (FAs) in the UK, US, and Japan, utilizing indices related to research substantiality 2 and analyzing index words/abstracts connected with the national strategy for allergy and immunology. 3 We used AMEDfind-an open database of top-down R&D projects funded by AMED-and selected 53 awards for a Practical Research Project for Allergic Diseases and Immunology (AMED-PPAI) (Figure S1). 1053 papers with verified PubMed IDs were included. As the controls, we selected the Hypersensitivity, Autoimmune, and Immune-mediated Diseases Study Section (NIH-HAI), an immunology-focused project in the Americas, and Human Immunology Unit (MRC-HIU), that in Europe, extracting 373 US papers and 118 UK papers, published in 2015-2019, respectively (see Appendix S1 for all methods).The Field-Weighted Citation Impact (FWCI)-evaluating research paper quality-was highest for MRC-HIU following NIH-HAI and AMED-PPAI (Table 1, Figure 1A). Although the international co-authorship rate was lowest in the AMED-PPAI, the annual trend showed a gradual increase (Figure 1B, Table 1). The number of top 10% most cited papers 2 /value, evaluating funding efficiency, was highest for MRC-HIU (Table 1).To characterize these outputs, we performed natural language analyses of the top 50 FWCI papers from three FAs and top 100 papers on this topic during 2015-2019 (Figure 1C-E). 4 Although all FAs produced mainly basic allergy/immunology study papers (e.g., clusters 0, 1, 2, and 9 in Figure 1D), AMED-PPAI produced relativelyThis is an open access article under the terms of the Creative Commons Attribution-NonCommercial License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.