What Does EGFR+ Lung Cancer Mean?
EGFR stands for epidermal growth factor receptor. EGFR is a protein that helps cells grow. However, a change (mutation) in the gene for EGFR can cause cells to grow too fast. This abnormal growth can cause cancer.1,2
Having EGFR+ lung cancer means a person with non-small lung cell cancer (NSCLC) has tested positive for the EGFR mutation. In the United States, about 10 to 15 percent of people have EGFR+ lung cancer.1,2
EGFR was the first mutation discovered as a target for personalized treatment in lung cancer. Now there are various treatment options for people living with EGFR+ lung cancer.2
Treatment options for EGFR+ lung cancer
Besides chemotherapy and radiation therapy, there are other treatments available for EGFR+ lung cancer. These include:1,2
For early-stage EGFR+ lung cancer, surgery may be an option to completely remove the lung cancer. Unfortunately, lung cancer is often diagnosed at a later stage. Therefore, treatment aims to slow the growth of the cancer and decrease symptoms.1-3
An EGFR inhibitor is a type of targeted therapy. It is also called a tyrosine kinase inhibitor (TKI) and comes in pill form. EGFR inhibitors block the EGFR protein from telling cells to grow. This can help stop the spread of cancer. EGFR inhibitors include:1,2
- For early and advanced EGFR+ lung cancer
- Tagrisso® (osimertinib)
- For advanced EGFR+ lung cancer
- Golotrif® (afatinab)
- Vizimpro® (dacomitinib)
- Tarceva® (erlotinib)
- Iressa® (gefitinib)
Tagrisso is often the first treatment prescribed for EGFR+ lung cancer. It can help combat the spread of cancer to the brain. Last, some people receive Tagrissob after surgery or chemotherapy. This can help prevent lung cancer from coming back (recurrence).1,4,6
In some cases, Tarceva is given along with Cyramza® (ramucirumab). Cyramza is a type of angiogenesis inhibitor. It works by preventing the formation of blood vessels that feed cancer growth. Together, Tarceva and Cyramza can help control cancer.1
Side effects of EGFR inhibitors
Common side effects of using an EGFR inhibitor include:5
- Skin issues, such as an acne-like rash
- Loss of appetite
- Mouth sores
Resistance to EGFR inhibitors
Cancer cells are constantly changing. This can lead to the development of new mutations. These new mutations may be resistant to the EGFR inhibitor being used. This is called treatment resistance. This can happen within several months or even years.1
When treatment resistance occurs, a repeat biomarker test is recommended. This test can reveal if there is a new mutation and which treatment option will be best going forward.1
For instance, some lung cancers have an EGFR mutation called exon 20 insertion mutation. This mutation requires a different treatment approach than other EGFR mutations.1
Treating lung cancer with an exon 20 insertion mutation
Typical EGFR inhibitors are less effective on the exon 20 insertion mutation. Chemotherapy remains a treatment option but there are also 2 targeted therapies available. These include:5
- RybrevantTM (amivantamab) – This drug is the first targeted therapy developed for the exon 20 insertion mutation. It is given as an IV infusion. Amivantamab blocks the action of 2 proteins that help cancer cells grow, EGFR and MET.
- ExkivityTM (mobocertinib) – Mobocertinib is an EGFR inhibitor specifically designed for the exon 20 insertion mutation. It is available as a pill like other EGFR inhibitors.
There are few targeted therapies for the exon 20 insertion mutation. But many clinical trials are trying to change that. They are researching potential drugs that can treat this mutation more effectively. Talk to your doctor regarding these trials. You may be eligible to participate.2
Do you considered yourself to be a well-informed lung cancer patient?