Showing posts with label EGFR. Show all posts
Showing posts with label EGFR. Show all posts

Saturday, July 27, 2019

Chemotherapy and Its Side Effects: Chapter 2 - Monoclonal antibodies (Cont'd)

G.1. Cetuximab (Erbitux, ImClone)

Mutation by chemicals, virus, radiation etc. could cause the over-expression of EGFR. Resulting in uncontrolled cell division and is associated with a number of cancers such as lung cancer, colon cancer, and glioblastoma multiforme (the most common and aggressive brain tumor).

Cetuximab is a recombinant mouse/human (chimeric) monoclonal antibody that binds to the extracellular domain of the EGFR, thereby blocking the activation of EGFR to achieve its anticancer effect. It is used for the treatment of EGFR-expressing metastatic colon cancer after failure of irinotecan (Irinotecan, a semisynthetic analogue of the natural alkaloid camptothecin, is a drug used for the treatment of colon cancer) and oxaliplatin-based regimens. Cetuximab is used in treating colon cancer patients, either alone or in combination with chemotherapy.


Cetuximab is administered by infusion and may cause serious infusion reactions including rapid onset of airway obstruction, hypotension, shock, loss of consciousness, myocardial infarction, or cardiac arrest. Cetuximab may also cause electrolyte depletion for months after initiation of erbitux therapy.

© Jiajiu Shaw, 2019

Disclaimer: This blog is written solely for informational purposes. It does not constitute the practice of any medical, nursing or other medical professional health care advice, diagnosis, or treatment. All contents posted are extracted from the book, "SIDE EFFECTS OF CHEMOTHERAPY AND RADIOTHERAPY", prepared by Dr. Jiajiu Shaw, Dr. Frederick Valeriote, and Dr. Ben Chen.

Saturday, May 18, 2019

Chemotherapy and Its Side Effects: Chapter 2 - Kinase Modulators (cont'd)

E.2. Afatinib (Gilotrif™, Giotrif®)

The commercial product of afatinib (Fig. 1.13) is an orally administered inhibitor of the ErbB family of tyrosine kinases. Afatinib also inhibits human epidermal growth factor receptor 2 (Her2) and epidermal growth factor receptor (EGFR). The inhibition is through the formation of a C-S covalent bond between afatinib and a cysteine in EGFR.


Fig. 1.13  Afatinib

Afatinib (Fig. 1.13) was first indicated for treating non-small cell lung cancer. In addition, it has been reported that afatinib may be useful to treat other cancers.

© Jiajiu Shaw, 2019

Disclaimer: This blog is written solely for informational purposes. It does not constitute the practice of any medical, nursing or other medical professional health care advice, diagnosis, or treatment. All contents posted are extracted from the book, "SIDE EFFECTS OF CHEMOTHERAPY AND RADIOTHERAPY", prepared by Dr. Jiajiu Shaw, Dr. Frederick Valeriote, and Dr. Ben Chen.