IL21R and neoplasm: Furthermore, we analysed IL21R gene expression in the Tumour Immunity Estimation Resource (TIMER) database (as mentioned by Anuraga et al. [42], https://cistrome.Shinyapps.io/timer/, accessed on 25 January 2024) and The University of Alabama at Birmingham Cancer Data Analysis Portal (UALCAN) database (as mentioned by Anuraga et al. [42], http://ualcan.path.uab.edu, accessed on 25 January 2024).