Understanding Medical Terms
Comprehensive definitions of pharmaceutical, oncology, and immunotherapy terms to help you understand your treatment options.
C
CD30
BiomarkerA cell membrane protein expressed on activated T and B cells, and highly expressed in Hodgkin lymphoma and some other lymphomas.
Checkpoint Inhibitor
ImmunotherapyA type of immunotherapy drug that blocks checkpoint proteins from binding with their partner proteins, preventing the 'off' signal from being sent and allowing T cells to kill cancer cells.
Chronic Myeloid Leukemia
OncologyA type of blood cancer characterized by increased production of myeloid cells in the bone marrow and accumulation in the blood.
Complete Response
TreatmentThe disappearance of all signs of cancer in response to treatment, though cancer may still be present in the body.
H
HER2-Positive Cancer
OncologyA type of cancer that tests positive for HER2 protein, which promotes the growth of cancer cells.
Head and Neck Cancer
OncologyCancers that start in the squamous cells lining the moist surfaces inside the head and neck, including the mouth, nose, and throat.
Hodgkin Lymphoma
OncologyA type of lymphoma (cancer of the lymphatic system) characterized by the presence of Reed-Sternberg cells.
I
Immune-Related Adverse Event
TreatmentSide effects caused by immunotherapy when the activated immune system attacks normal organs and tissues.
Immunotherapy
TreatmentA type of cancer treatment that helps the immune system fight cancer by using substances made by the body or in a laboratory to boost or restore immune system function.
Intravenous Infusion
AdministrationA method of delivering medication directly into a vein over a period of time, typically 30-90 minutes.
M
MSI-H/dMMR
BiomarkerMicrosatellite instability-high (MSI-H) or mismatch repair deficient (dMMR) tumors have defects in DNA repair mechanisms, making them highly responsive to immunotherapy.
Melanoma
OncologyA type of skin cancer that develops from melanocytes, the pigment-producing cells in the skin.
Monoclonal Antibody
PharmacologyA laboratory-made protein that acts like human antibodies in the immune system, designed to attach to specific targets on cells.
P
PD-1 Inhibitor
ImmunotherapyA type of immunotherapy that blocks the PD-1 protein on immune cells, allowing them to attack cancer cells more effectively.
PD-L1 Expression
BiomarkerThe level of PD-L1 protein present on tumor cells or immune cells, used as a biomarker to predict response to immunotherapy.
PD-L1 Inhibitor
ImmunotherapyA type of immunotherapy that blocks the PD-L1 protein on cancer cells, preventing it from binding to PD-1 on immune cells.
Progression-Free Survival
TreatmentThe length of time during and after treatment that a patient lives with cancer without it getting worse.
T
About This Glossary
Our medical glossary provides clear, accurate definitions of pharmaceutical and oncology terms. Whether you're researching treatment options, trying to understand your diagnosis, or learning about immunotherapy, this resource can help.
All definitions are reviewed for medical accuracy and written in plain language. Click any term to see detailed explanations, related medications, and connected concepts.