Conversely, the HLA types associated with low muscle mass (HLA-B*27:05 OR 1.079, 95% CI 1.04–1.12, p = 1.64*10–5; HLA-C*01:02 OR 1.093, 95% CI 1.05–1.13, p = 1.65*10–6, and HLA-C*02:02 OR 1.059, 95% CI 1.02–1.10, p = 1.46*10–3) were distinct from those associated with the EWGSOP definition of sarcopenia. Here, HLA-B is linked to sarcopenia.