While highly expressed in spermatocytes of benign testes (HScore = 1.98 + 0.15), all cancerous testes had extremely low or no nuclear HOXA10 expression with HScores = 0.067 + 0.019 in seminoma, 0.207 + 0.06 in spermatocytic tumor, and 0 in non-seminoma. This evidence concerns the gene HOXA10 and seminoma.