Cancer Biology Glossary
100 terms total — 24 showing — Last updated 15 Sep 2026
Adoptive Cell Therapy ACT
Treatment approach involving the extraction, modification, and reinfusion of a patient's immune cells to enhance anti-tumor activity.
cytotoxic T-lymphocyte-associated protein 4
A protein receptor that acts as an immune checkpoint, downregulating immune responses.
Desmoplastic Reaction
Proliferation of fibrous connective tissue around a tumor, creating a dense stromal matrix that can influence drug penet...
differentiation
The degree to which cancer cells resemble normal cells in appearance and function, with well-differentiated tumors appea...
Differentiation Therapy
Treatment approach that promotes cancer cell maturation toward a more differentiated, less aggressive phenotype rather t...
dormancy
State of cancer cell quiescence where tumor growth is temporarily arrested.
dose-limiting toxicity
The adverse effects that prevent further dose escalation in cancer treatment, typically defined in clinical trials to es...
driver mutation
A genetic alteration that directly contributes to cancer development and progression.
durable response
A sustained tumor response to treatment that persists for an extended period beyond typical expectations.
Eastern Cooperative Oncology Group
A cooperative research group that develops cancer treatment protocols and performance status assessment scales.
ECOG Performance Status
A standardized scale measuring a cancer patient's functional ability and quality of life during treatment.
epithelial-mesenchymal transition
Cellular process where epithelial cells acquire mesenchymal characteristics, promoting metastasis.
Extranodal Extension
Tumor growth extending beyond the capsule of lymph nodes into surrounding soft tissues, indicating advanced local diseas...
FISH
A molecular technique using fluorescent probes to detect specific DNA sequences or chromosomal abnormalities in cancer c...
Gleevec Resistance
Development of insensitivity to imatinib (Gleevec) therapy in chronic myeloid leukemia or gastrointestinal stromal tumor...
hereditary cancer syndrome
A genetic condition caused by inherited mutations that significantly increase cancer risk.
Hypermutated Tumor
Malignancy characterized by an unusually high mutation rate, often associated with defective DNA repair mechanisms and e...
hyperprogression
Accelerated tumor growth following immunotherapy initiation, exceeding the natural progression rate.
IDH mutation
Genetic alteration in isocitrate dehydrogenase genes, particularly important in brain tumors and acute myeloid leukemia.
immune checkpoint inhibitor
A class of cancer drugs that block inhibitory signals to enhance immune system attack on tumors.
immune escape
Mechanisms by which cancer cells evade detection and destruction by the immune system.
immune-related adverse event
Side effects from immunotherapy caused by excessive immune activation against normal tissues.
Immune-Related RECIST
Modified response evaluation criteria designed to account for unique response patterns seen with immunotherapy treatment...
immunohistochemistry
Laboratory technique using antibodies to detect specific proteins in tissue sections.
invasion front
The leading edge of a tumor where cancer cells actively invade surrounding tissue.