[204] examined the frequency and function of peripheral blood, healthy liver tissue, tumor margins, and tumor‐infiltrating MAIT cells in 21 CRLM patients, reporting that CD3ε+Vα7.2+CD161++ or CD3ε+MR1 tetramer+ MAIT cells exist in both healthy and tumor‐affected liver tissues. Here, MR1 is linked to neoplasm.