In GEL-TGCT-0053, a post-chemotherapy lymph node metastasis, LOH was detected in both HLA-A and HLA-B, and although LOH could not be established in this case where two highly similar HLA-C haplotypes were observed (C07:02 and C07:01), the ordering of HLA genes suggested it was likely that there was also loss of HLA-C. This evidence concerns the gene HLA-C and metastatic malignant neoplasm in the lymph nodes.