BRCA2 and gastroesophageal reflux disease: The disease name Hodgkin’s Lymphoma is as Hodgkin Lymphoma, Hodgkins Lymphoma, Hodgkin disease, and HL. Similarly, the entity name Mixed Cellularity Classical Hodgkin Lymphoma is found as Mixed Cellularity Hodgkin Lymphoma, Mixed Cellularity Hodgkins Lymphoma, and MCCHL. Moreover, there are many abbreviated forms of entity names, such as ALL, AML, BRCA2 (breast cancer type 2), CLL (chronic lymphocytic leukemia), CML (chronic myeloid leukemia), COPD (chronic obstructive pulmonary disease), DCIS (ductal carcinoma in situ), and GERD (gastroesophageal reflux disease).