Breast cancer is one of the most common cancers affecting women in India, but significant advances in diagnosis and treatment have greatly improved survival rates. Today, treatment is no longer based solely on the stage of cancer. Doctors now use precision medicine, genetic testing, and molecular profiling to choose therapies that offer better outcomes with fewer side effects.

Personalized Treatment Based on Cancer Type

Modern breast cancer treatment begins with identifying the cancer subtype, including:

• Hormone Receptor (HR)-Positive
• HER2-Positive
• Triple-Negative Breast Cancer (TNBC)
• BRCA Mutation-Associated Breast Cancer

This personalized approach helps oncologists recommend the most effective treatment for each patient.

Breast-Conserving Surgery

Many women with early-stage breast cancer can now undergo breast-conserving surgery (lumpectomy) instead of complete breast removal. Combined with radiation therapy, this approach offers excellent cancer control while preserving the breast whenever medically appropriate. Sentinel lymph node biopsy has also reduced the need for extensive lymph node removal, lowering the risk of arm swelling (lymphedema).

Targeted Therapy for HER2-Positive Breast Cancer

Targeted therapy has transformed treatment for HER2-positive breast cancer.

Common targeted medicines available in India include:

• Trastuzumab
• Pertuzumab
• Biosimilar trastuzumab
• Trastuzumab Deruxtecan (Enhertu) for eligible advanced HER2-low and HER2-ultralow breast cancers following recent approval.

These drugs specifically attack cancer cells while causing less damage to healthy tissues compared with traditional chemotherapy.

Hormone Therapy

For hormone receptor-positive breast cancer, hormone therapy remains one of the most effective long-term treatments.

Common medications include:

• Tamoxifen
• Letrozole
• Anastrozole
• Exemestane

In advanced disease, these medicines are often combined with CDK4/6 inhibitors, improving progression-free survival in many patients.

Immunotherapy

Immunotherapy has become an important option, particularly for selected patients with triple-negative breast cancer (TNBC).

Immune checkpoint inhibitors such as pembrolizumab may be combined with chemotherapy in eligible patients, helping the body’s immune system recognize and destroy cancer cells more effectively. Treatment decisions depend on specific biomarker testing.

Precision Medicine and Genetic Testing

Genetic testing is increasingly recommended for patients with:

• Strong family history of breast cancer
• Young age at diagnosis
• Bilateral breast cancer
• Triple-negative breast cancer diagnosed at a younger age

Testing for BRCA1 and BRCA2 mutations helps doctors determine inherited risk and identify patients who may benefit from specific targeted therapies and preventive strategies.

Advanced Radiation Therapy

Radiotherapy has also evolved significantly.

Modern techniques such as:

• Intensity-Modulated Radiation Therapy (IMRT)
• Image-Guided Radiation Therapy (IGRT)

allow highly precise treatment while minimizing radiation exposure to the heart, lungs, and surrounding healthy tissues.

Why Early Detection Still Matters

Even with advanced treatments, early diagnosis remains the biggest factor influencing survival.

Women should seek medical evaluation if they notice:

• A breast lump
• Nipple discharge
• Changes in breast shape
• Skin dimpling
• Persistent breast pain
• Swelling in the armpit

Regular breast self-examination, clinical breast examination, and mammography for eligible women can help detect cancer at an early, more treatable stage.

Conclusion

The landscape of breast cancer treatment in India has changed dramatically. From breast-conserving surgery and targeted therapy to immunotherapy, genetic testing, and precision medicine, patients today have access to world-class treatment options across many leading cancer centers. Early diagnosis, expert evaluation, and personalized treatment planning remain the keys to achieving the best possible outcomes.