18 Moreover, unlike spontaneous tumors in CD2‐MYC mice, CD2‐RUNX2/CD2‐MYC early onset lymphoma cells display a low apoptotic index along with immunoblastic morphology, indicating that this potent oncogene combination overcomes the propensity of RUNX2 and MYC to induce, respectively, growth arrest and apoptosis.18 Here, CD2 is linked to lymphoma.