The search strategy used the following Boolean logic: (“Non-Hodgkin Lymphoma” OR “NHL” OR “Diffuse Large B-Cell Lymphoma” OR “T-Cell Lymphoma”) AND (“Bone Involvement” OR “Skeletal Lesions” OR “Osteolytic Lesions” OR “Bone Metastases”) AND (“Hypercalcemia” OR “Paraneoplastic Hypercalcemia” OR “PTHrP” OR “Osteolysis”) AND (“Case Report” OR “Case Series”). This evidence concerns the gene PTHLH and hypercalcemia disease.