Cancer Immunotherapy Flashcards
Cancer Immunosurveillance
decreases cancer rates through inhibition of carcinogenesis and maintaing of cellular homeostasis
Cancer can escape immunosurveillance by?
expression of immune checkpoint molecules (lowers MHC 1 expression0
Cancer Immunotherapy is
biological therapy
helps restore immune system and does NOT target cancer cells directly
Checkpoint Inhibitors?
takes brakes off immune system and attacks cancer cells
are all antibodies
Chimeric antigen T-cell therapy
Cellular Immunotherapy
Cytokines
IFNa and IL-2
IFN a use?
completely resected high risk melanoma and refractory cancers
IFN-a does what?
activates CD8 T cells and reduces Treg infiltration into tumor proliferation
AE: flu like
IL2 use?
metastatic renal cell cancer and melanoma
IL2 AE?
flu like symptoms
high doses=capillary leak syndrome or vascular leak —>low BP/swelling
Give=Glucocorticoids and IV fluids
What are 2 important immune checkpoints?
CTLA-4 and PD-1
When proteins interact with CTLA-4 and PD-1 the T-cells ______?
fall into sleep mode and dont attack the tumor
Ipilimumab MOA?
blocks interaction of CTLA-4 with B7 ligands on APCs and augments T-cell activation
Ipilimumab Use?
metastatic melanoma
Ipilimumab AE?
inflammatory toxicities-immune related
Nivolumab MOA?
blocks the interaction between PD-1 and PD-L1
Nivolumab is more effective and safer than Ipilimumab
True
Are immune AE less common with Nivolumab?
Yes
Nivolumab Use?
For previously treated advanced NSCLC and RCC
Cancers with mismatch repair deficiency or high microsatellite instability give?
Pembrolizumab
Give Pembrolizumab for?
Unresectable or metastatic melanoma previously treated with Ipilmumab
Pembrolizumab AE?
Fetal risk
Atezolimumab AE?
potential embryo fetal toxicity
PD-L1 is expressed in _______?
Cancer cells
Combo treatment with Anti-PD1 and Anti-CTLA4 does what?
improves efficacy