PD-L1	Programmed Death-Ligand 1
HRS	Hodgkin and Reed–Sternberg
cHL	Classical Hodgkin Lymphoma
TME	Tumor Immune Microenvironment
OS	Overall Survival
PFS	Progression-Free Survival
EBV	Epstein–Barr Virus
H-score	Histologic Score
CR	Complete Remission
IFN-γ	Interferon Gamma
PD-1	Programmed Cell Death 1
ICIs	Checkpoint Inhibitors
R/R	Relapsed/Refractory
IQR	Interquartile Range
MΦ	Macrophages
EBER	Epstein–Barr Virus-Encoded RNA
CI	Confidence Interval
ANOVA	Analysis of Variance
PET-CT	Positron Emission Tomography–Computed Tomography
ER	Evidence Ratio
CROHEM	Croatian Cooperative Group for Hematologic Diseases
NCCN	National Comprehensive Cancer Network
ABVD	Chemotherapy protocol: Doxorubicin, Bleomycin, Vinblastine, and Dacarbazine
BEACOPP	Bleomycin, Etoposide, Doxorubicin, Cyclophosphamide, Vincristine, Procarbazine, and Prednisone
OEPA	Vincristine, Etoposide, Prednisone, and doxorubicin
DHAP	Cisplatin, Cytarabine, and Dexamethasone
ICE	Ifosfamide, Carboplatin, and Etoposide
ISH	In Situ Hybridization
DAB	3,3’-diaminobenzidine
IHC	Immunohistochemistry