EGFR-Positive Lung Cancer: Causes, Symptoms, and Treatment
Medically reviewed by Achuta Uppu, MD, Internal Medicine. Last reviewed: October 23, 2026.
What kind of doctor treats EGFR-Positive Lung Cancer?
An oncologist, a doctor who treats cancer, usually treats EGFR-positive lung cancer. A pulmonologist, a lung doctor, often helps with diagnosis and breathing problems. A direct primary care or concierge doctor can be a first stop for an evaluation and can refer you to a specialist when needed.
What is EGFR-positive lung cancer?
In lung cancer, certain cells in the lungs become abnormal and multiply out of control to form a tumor. Some lung cancers have changes in a gene called EGFR.
These gene changes make a receptor protein that is constantly turned on. Cells then keep getting signals to grow and survive, which leads to tumors.
Symptoms
Lung cancer may not cause signs or symptoms in its early stages. It may be found during a chest x-ray done for another condition. Signs can also come from other conditions. Possible signs include:
- A cough that doesn't go away or gets worse over time.
- Wheezing or mild trouble breathing.
- Weight loss for no known reason, or tiredness.
Coughing up blood and chest pain are also possible signs, but they are emergencies. See the 911 line under When to see a doctor.
Causes and who gets it
Nearly all EGFR changes happen during a person's lifetime. They are present only in cancer cells. In nearly all cases, you do not inherit these gene changes from your parents.
These changes most often occur in non-small cell lung cancer, in a form called adenocarcinoma. They are most common in people with the disease who have never smoked.
Among people with lung cancer, EGFR changes occur in 30 to 40 percent of Asians and 10 to 15 percent of whites.
Smoking is the major risk factor for non-small cell lung cancer in general. Other things that can damage DNA include radon gas and air pollution.
How doctors diagnose it
Doctors usually diagnose non-small cell lung cancer with tests that make pictures of the lung. These include a chest x-ray and a CT scan.
If lung cancer is suspected, you will have a biopsy. A biopsy is a procedure that collects a sample of tissue to look at.
Lung cancer genetic tests look for changes in the genes of cancer cells. The test may use a sample of tumor tissue or, in some cases, blood. Your provider can use the results to decide how best to treat the cancer.
Cancer cells can change over time, so testing may be repeated to look for new gene changes.
Treatment
Lung cancers with EGFR changes tend to respond to treatments that target the overactive EGFR protein. This is called targeted therapy. Targeted therapy may have fewer side effects than chemotherapy or radiation therapy.
The FDA has approved several targeted therapy drugs for non-small cell lung cancer. They include osimertinib, erlotinib, gefitinib, afatinib, dacomitinib, and lazertinib. Your doctor picks a drug based on the gene changes found in your tumor.
Other treatments for non-small cell lung cancer include surgery, radiation therapy, chemotherapy, and immunotherapy.
Treatment options depend on the stage of the cancer. They also depend on whether the cancer has changes in certain genes, such as EGFR. Your general health matters too.
You may want to get a second opinion to confirm your diagnosis and treatment plan. You may also want to think about taking part in a clinical trial.
When to see a doctor
Call your doctor if you have a cough that does not go away or gets worse over time, wheezing or mild trouble breathing, weight loss for no known reason, or tiredness. Signs can be caused by lung cancer or by other conditions.
Call 911 or go to the emergency room if you have severe trouble breathing, chest pain or discomfort that lasts two minutes or more, fainting, coughing up blood, or sudden weakness or trouble speaking.
How a direct primary care or concierge doctor fits in
A direct primary care doctor charges a flat monthly fee instead of billing insurance, while a concierge doctor usually charges more and often works alongside insurance. A direct primary care doctor can review your symptoms, order first tests, and help you keep up with visits to your cancer team. They can also help with follow-up care.
Common questions
What does EGFR-positive mean?
It means the cancer cells have a change in the EGFR gene. These changes are present only in cancer cells.
How do doctors find an EGFR change?
They use a lung cancer genetic test. The test may use a sample of tumor tissue or, in some cases, blood.
Is EGFR-positive lung cancer inherited?
In almost all cases, no. Nearly all of these gene changes happen during a person's lifetime and are present only in cancer cells.
Can EGFR-positive lung cancer be treated with targeted therapy?
Yes, these cancers tend to respond to targeted treatments. Targeted therapy uses drugs to attack specific cancer cells.
Sources
- National Cancer Institute - Non-Small Cell Lung Cancer Treatment
- MedlinePlus Genetics - EGFR gene
- MedlinePlus - Lung Cancer Genetic Tests
- National Cancer Institute - Drugs Approved for Lung Cancer
Medical Disclaimer
This content is for general educational and informational purposes only and is not medical advice. It is not a substitute for professional medical advice, diagnosis, or treatment, and reading it does not create a doctor-patient relationship. Always seek the advice of your physician or another qualified health provider with any questions about a medical condition, and never disregard or delay seeking professional advice because of something you read here. If you think you may have a medical emergency, call 911 (or your local emergency number) immediately.
