PD-L1 Expression Less than or Equal to 50 Percent

**Semantic type:** Laboratory or Test Result

**Definition:** An immunohistochemical finding indicating that at most 50 percent of the cells in a sample are expressing PD-L1.

**Synonyms:** - B7 Homolog 1 Expression Less than or Equal to 50 Percent - B7-H1 Expression Less than or Equal to 50 Percent - B7H1 Expression Less than or Equal to 50 Percent - CD274 50 Percent or Less - CD274 Antigen Expression Less than or Equal to 50 Percent - CD274 Expression Less than or Equal to 50 Percent - CD274 Less than or Equal to 50 Percent - CD274 Molecule Expression Less than or Equal to 50 Percent - PD-L1 50 Percent or Less - PD-L1 Less than or Equal to 50 Percent - PDCD1 Ligand 1 Expression Less than or Equal to 50 Percent - PDCD1L1 Expression Less than or Equal to 50 Percent - PDCD1LG1 Expression Less than or Equal to 50 Percent - PDL1 Expression Less than or Equal to 50 Percent - Programmed Cell Death 1 Ligand 1 Expression Less than or Equal to 50 Percent - Programmed Death Ligand 1 Expression Less than or Equal to 50 Percent