In order to find studies reporting the clinical importance of p38 expression in MM, the public database Gene Expression Omnibus (GEO), NCBI, (https://www.ncbi.nlm.nih.gov/geo/query/acc.cgi?acc=GSE146649, 18 August 2022) was searched by using the words “multiple myeloma” and “healthy donors” and selecting “homo sapiens” in the organism filter and “expression profiling by array” as the study type. This evidence concerns the gene MAPK14 and AL amyloidosis.