To explore the potential associations between expression levels of various TP53 isoform mRNA and the presence of infiltrating CD20+ B cells, CD3+ T cells and CD68+ macrophages, we carried out rank ordered hierarchical clustering on normalised TP53 isoform expression from 36 RA samples, of which we had immune cell infiltration data for 33. Here, CD68 is linked to rheumatoid arthritis.