Oncology 2 Flashcards
What are trageted therapy?
- They inhibi specific pathways that are actiavted in cancer
Targeted therapies have much more fewer ADRs than chemotherapies hwich are poisions. TRUE OR FALSE?
TRUE
What can cause cancer?
- External mutagens e.g UV light and smoking
- Internal mutagens e.g the enviornment
- Intrisic errors - which are errors in the DNA replications
- All these can lead to mutations and hence cancer
Germline mutations are inherited. TRUE OR FALSE?
TRUE
somatic mutations are individualised, but can be passed on during cell division. TRUE OR FALSE?
TRUE
What genes are affected in cancer?
- Oncogenes and tumour supressor genes
90% of cancer genes are dominant, 10% can be reccessive. TRUE OR FALSE?
TRUE
What does the Knudoson 2 hit hypothesis say?
- You need mutations to occur at both reccesive genes to have cancer
mutated cells (driver mutations) that lead to formation of tumours have a seletive advantage over the mutated cells that did not benefit from the mutation. TRUE OR FALSE?
TRUE
What are passenger mutations?
- They have a null effect (neither advs or disadv), but they also be seen with driver mutations but in fewer numbers
You can get resistance before treatment and resistance after treatment? TRUE OR FALSE?
TRUE
What kinase inhibitor drug was first shown to have efficacy in any cancer?
- Imitanib
Nilotinib is 30 times more potent than imitanib. TRUE OR FLASE/
TRUE
What are the indications of imatinib, nilotinib and desatinib?
- All indicated for chronic myeloid leukemia
- Imatinib is indicated for GIST
What are the ADRs for imatinib, nilotinib and desatinib?
- Cause myelosupression
- Nelotinib causes prolong QT interval
Chronic myeloid leukemia are primarily driven by BcrABl. treu or false?
true
What do proto-oncogenes do?
- Regulate critical cancer relevant pathways
Activation sof proto-oncogenes lead to the cancerous phenotype. true or flase?
true
proto-oncogenes are activated by somatic mutations. TRUE OR FLASE?
TRUE
Tumour supressors are ativated in cancer. TRUE OR FLASE?
FALSE
Drug targets are the regulators of the hallmark of cancer. TRUE OR FALSE?
TRUE
Cetuximab recognises the EGF-R
Trastuzumab recognises the HER2 receptor
True or flase?
true
-Gefitinib inhibits EGF-R
-Lapatinib inhibits EGF-R and HER2
TRUE OR FALSE?
TRUE
Gefitinib and elortinib both used for NSCLC. treu or flase?
true
What is cetuximab and trastuzumab indicated for?
- Cetixumab: Colorectal cancer with the wild type K-ras
- Trastuzumab: breast cancer and gastric
Gefitinib and elortinib are kinase inhibitors. treu or flase?
true
Cetuximab and trastuzumab are monoclonal antibodies. TRUE OR FLASE?
TRUE
gefitinib, elortinib interact with drugs decreasing gastric pH which leads to the kinase inhibiotrs becoming insoluble. true or false?
true
What is sorafenib indicated for?
- Hepocellular carcinoma
what is the mechanism of action for sorafenib?
- It inhibits several kinases
Verafenib and Dabrafenib are indicated for melanoma. TRUE OR FALSE?
TRUE
Everolimus is indicated for renal cancer. TRUE OR FALSE?
TRUE
what is the mechanism of action of Everolimus?
- Inhibits mTORC1 which regulates protein translation
Palbocibid inhibits Cdk4/6 and is indicated for breats cancer. TRUE OR FALSE?
TRUE
What us bevacizumab indicated for?
- Colecteral
- Breast
- NSCLC
- Renal cancer
hwo does bevacizumab work?
- Sequestrates VEGF
What is sunitib indicated for?
- GIST and Renal cancer
Sunitib inhibits VEGF receptor tyrosine kinase. TRUE OR FALSE?
TRUE
What are some ADRs of sunitib?
- yellow skin discoloration
Cancer cells are more sensitive to proteasome inhibition. TRUE OR FALSE?
TRUE
Proteosome protects the rest of the cell from degrading. true or flase?
true
Give an example of a proteosome inhibitor drug?
Bortezomib
What is bortezomib indicated for?
- multiple Myeloma
Name a DNA damage repair inhibitor?
- Olaparib
Olaparib a PARP inhibitor. true or false?
true
olaparib kills BRCA null cells. true or false?
true
what is synthetic lethality?
- combinding the factors leads to cell death
combindding olaparib and BRCA null cells leads to cell death. true or false?
- true
Single strand DNA damage repair pathay depend upon PARP. true or false?
true
Epigenic regulation is Covalent modifiation of histones and DNA that alter gene expression via mutations, amolification and deletion. TRUE OR FALSE?
TRUE
There are different residues within the histones that can become methylated or acetylated. TRUE OR FALSE?
TRUE
What are CpG island?
- Region in genome enriched in CG nucleotide repeats
If CgP genes become methylated this silences the gene expression
If not methylated thet promote gene expression leading to transcription. TRUE OR FALSE?
TRUE
How does Decitabine a demethylating agent work?
- Inhibits methylation of cytosines
vismodegib a hedgehog pathway is teratogenic. TRUE OR FALSE?
-TRUE
Ipilimab is a monoclonal antibody against CTLA4. true or false?
true
Ipilimab is teratogenic. true or false?
true
Rituximab is a non-hogkins indicated with B cell malignancies. true or false?
true