"Tumor regression" refers to the shrinking or reduction in size of a tumor, which can occur naturally or as a result of medical treatment. Full definition
Further injections, however, safely drive tumor regression. (sciencedaily.com)
A PD -1-specific monocolonal antibody induces frequent tumor regressions in patients with advanced melanoma, renal cancer, lung cancer, and colon cancer with very low rates of toxicity. (cancerresearch.org)
Notably, in mice bearing breast cancer cell line - derived tumors, administration of OTSSP167 significantly impaired the growth of basal breast tumors, or even caused tumor regression; by contrast, the growth of luminal tumors were largely unaffected by the treatment (Figure 7E, 7F). (elifesciences.org)