What are classical EGFR mutations?

Classical EGFR mutations are the common activating alterations in non–small cell lung cancer, chiefly exon 19 deletions and the exon 21 L858R point mutation. These alterations increase EGFR kinase activity and typically confer sensitivity to EGFR tyrosine kinase inhibitors. They are most frequent in adenocarcinomas, especially among non‑smokers, females, and East Asian patients; other uncommon variants can affect treatment response.

What is HER2 mutation?

HER2 mutation refers to changes in the ERBB2 gene that lead to overproduction or abnormal activity of the HER2 receptor, a cell-surface tyrosine kinase. This drives rapid cell growth and is implicated especially in certain breast and gastric cancers. HER2 alterations affect prognosis and guide use of targeted therapies (for example, trastuzumab, pertuzumab, tyrosine kinase inhibitors) to block HER2-driven signaling.

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EGFR Mutation Study (10 Common Mutations), in Gurugram

Q: What is the most common EGFR resistance mutation?

The most common EGFR resistance mutation is T790M — a threonine-to-methionine substitution at amino acid 790. It arises in roughly 50–60% of patients with acquired resistance to first- and second‑generation EGFR tyrosine kinase inhibitors, increases ATP affinity at the kinase “gatekeeper” residue, and reduces drug binding. Detection guides use of third‑generation inhibitors effective against T790M.

This test looks for ten common changes (mutations) in the EGFR gene. Book EGFR Mutation Study (10 Common Mutations) in Sector 57, Gurugram at GetVisit, NABL labs in Sector 57 and South City, home collection, same-day results and cashless OPD.

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What is a EGFR Mutation Study (10 Common Mutations) Test in Gurugram ?

What is EGFR Mutation Study (10 Common Mutations)?

This test looks for ten common changes (mutations) in the EGFR gene. EGFR helps control how cells grow and divide. It is particularly important for people with diabetes or hypertension , the two leading causes of chronic kidney disease in India, responsible for over 60% of cases requiring dialysis.

What does EGFR Mutation Study (10 Common Mutations) measure?

Certain mutations can make cells grow uncontrollably and drive cancers, especially non-small cell lung cancer. Finding these mutations is important because specific medicines can target them. Doctors use results to choose targeted treatments, predict likely response, and watch for resistance during therapy. Results can affect treatment plans and help avoid ineffective medicines.

What symptoms suggest EGFR Mutation Study (10 Common Mutations) may be needed?

A doctor may recommend EGFR Mutation Study (10 Common Mutations) when a patient reports ankle or leg swelling, reduced urine output, frothy or foamy urine, persistent fatigue, loss of appetite, nausea, persistent itching, muscle cramps, and high blood pressure. GetVisit makes testing convenient in Gurugram, with lab slots and home collection in DLF Phase 3, DLF Phase 1, and nearby areas.

How is EGFR Mutation Study (10 Common Mutations) performed?

This test is performed on a swab or fluid sample collected by a trained healthcare professional, not on a routine blood draw. Collection is quick and done at a GetVisit-partnered lab or collection point in DLF Phase 3 or DLF Phase 1, Gurugram, after which the sample is dispatched to the NABL-accredited lab for processing.

How accurate is EGFR Mutation Study (10 Common Mutations)?

Samples collected in DLF Phase 3 or DLF Phase 1, Gurugram are processed at NABL-accredited labs using validated methods and internal quality control. Accuracy depends on correct collection technique by a trained professional, which GetVisit's partnered centres follow. Reports are accepted by hospitals, specialists, and insurers across India.

Are there any risks to EGFR Mutation Study (10 Common Mutations)?

Risk is minimal. Swab, sputum, or fluid collection by a trained professional in DLF Phase 3 or DLF Phase 1, Gurugram may cause brief, mild discomfort but no lasting effects. Any specific precaution for your test will be explained at the collection centre.

Did you know?

Common EGFR mutations include exon 19 deletions and the exon 21 L858R point mutation (both sensitizing to EGFR inhibitors).

EGFR Mutation Study (10 Common Mutations) Test Preparation in Gurugram

Your medicines:

Tell your doctor if you take painkillers such as ibuprofen or diclofenac, or ACE inhibitors, as these can nudge kidney readings; a short, safe pause may be advised.

Before you come:

This test can be done at any time of day with no fasting. Keep to your usual meals and medicines, and drink water normally.

Booking your slot:

An early slot works best, especially for fasting tests. Home collection is available across Sector 45, MG Road, and the rest of Gurugram.

Documents and clothing:

Have your doctor's referral and photo ID ready; earlier reports for the same test are useful for tracking trends.

EGFR Mutation Study (10 Common Mutations) Test Parameters in Gurugram

Exon 19 deletions; L858R (Exon 21); T790M (Exon 20); G719A/C/S (Exon 18); S768I; L861Q; Exon 20 insertions; E709X; other Exon 18/21 point mutations; common activating/resistance EGFR variants

Why Take a EGFR Mutation Study (10 Common Mutations) Test in Gurugram ?

When does a doctor order EGFR Mutation Study (10 Common Mutations)?

EGFR Mutation Study (10 Common Mutations) is part of molecular panels used for suspected or confirmed non-small cell lung cancer. Doctors may order it when imaging or symptoms suggest lung cancer or when a biopsy is available.

Who should get EGFR Mutation Study (10 Common Mutations) done in Gurugram?

Gurugram's extreme summer heat, variable water quality in fast-growing sectors, and high diabetes and hypertension rates raise kidney-stone and chronic kidney-disease risk. Those who benefit most from regular EGFR Mutation Study (10 Common Mutations) testing include diabetics, hypertensives, older adults, and anyone with swelling, frothy urine, or a previous abnormal kidney result. Early detection in Gurugram allows intervention long before symptoms of kidney failure appear.

What conditions can EGFR Mutation Study (10 Common Mutations) help diagnose?

It helps diagnose and guide targeted therapy, monitor treatment response, and detect resistance. Abnormal results usually reflect acquired or inherited changes in the tumor’s DNA rather than lifestyle. A strong family history of cancer or unusual clinical features may prompt testing.

What do EGFR Mutation Study (10 Common Mutations) results mean?

Results are interpreted in context, not in isolation. GetVisit shows your measured value next to the laboratory reference range, and your doctor reads it together with your clinical picture and any earlier results. See the FAQs below for what typical high or low values can mean for this test.

How often should EGFR Mutation Study (10 Common Mutations) be repeated?

Adults with no risk factors and a normal result: annually from age 30. Diabetics and hypertensives: at least once a year, often every 6 months. Patients with known kidney disease: at the interval set by their nephrologist. Anyone starting a drug cleared by the kidneys: at baseline and periodically thereafter.

What happens after EGFR Mutation Study (10 Common Mutations) results are ready?

After the lab authorises your results, the report is uploaded to your GetVisit account and saved for future comparison. If anything falls outside the expected range, your doctor can advise whether it needs a repeat test, a lifestyle change, or a specialist opinion.

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What are the common mutations in EGFR?

Common EGFR mutations include exon 19 deletions and the exon 21 L858R point mutation (both sensitizing to EGFR inhibitors). Other frequent alterations are exon 20 insertions and the T790M resistance mutation (exon 20). Less common activating variants include G719X (exon 18), S768I (exon 20), and L861Q (exon 21). These mutations guide targeted therapy choices.

What is the most common EGFR resistance mutation?

The most common EGFR resistance mutation is T790M , a threonine-to-methionine substitution at amino acid 790. It arises in roughly 50–60% of patients with acquired resistance to first- and second‑generation EGFR tyrosine kinase inhibitors, increases ATP affinity at the kinase “gatekeeper” residue, and reduces drug binding. Detection guides use of third‑generation inhibitors effective against T790M.

What is the EGFR mutation test?

The EGFR mutation test detects changes in the EGFR gene in cancer cells, usually from a tumor biopsy or a blood (liquid biopsy) sample. It identifies mutations (for example exon 19 deletions, L858R, T790M) that predict response or resistance to EGFR-targeted therapies, helping oncologists choose appropriate tyrosine kinase inhibitors and guide prognosis and treatment planning.

What are EGFR exon 20 insertion mutations?

EGFR exon 20 insertion mutations are in-frame insertions within exon 20 of the epidermal growth factor receptor gene that alter the kinase domain’s shape, producing constitutive receptor activation. They occur in a subset of non-small cell lung cancers and are generally less sensitive to first- and second-generation EGFR tyrosine kinase inhibitors, often requiring newer targeted agents developed specifically for this mutation class.

Can I exercise before EGFR Mutation Study (10 Common Mutations)?

Avoid strenuous exercise for 12 to 24 hours before EGFR Mutation Study (10 Common Mutations), since intense activity can temporarily change several blood markers. Light everyday movement is fine.

Can menstruation affect EGFR Mutation Study (10 Common Mutations) results?

Some tests, such as iron studies and certain hormone panels, can be influenced by your menstrual cycle. If you are on your period, mention it so your doctor can judge whether timing matters for EGFR Mutation Study (10 Common Mutations).

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Usha Parvathy

Partner at Deloitte

A big thank you to Shikhar from the Visit app for going above and beyond to arrange a last-minute appointment during an urgent situation. His seamless coordination truly made a difference.

Tejas Baxix

Associate Vice President

A clean facility enhances experience. Quick checkups are a plus. Miss Rinku from Aditya Birla Health Insurance provided excellent service and handled our files well.

Sadaanand Asai

Employee

“The service was excellent—she was helpful, efficient, and made my recovery smooth and stress-free. Her support made a real difference.”

Ishan Kaul

Manager Administration

“Thank you, Shared Gupta, for the great support with my reimbursement claims and Wipro health packages. Truly appreciated!”

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Employee

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