What is HER2-Positive Breast Cancer?

The transmembrane receptor tyrosine kinase HER2, which stimulates cell division and proliferation, is overexpressed in HER2-positive breast cancer. HER2-positive breast cancers account for 15-20% of all cases. Compared to HER2-negative breast cancers, it is an extremely aggressive form of cancer with rapidly expanding tumors and a significant risk of metastasis and recurrence. In the past, HER2-positive breast cancer had been regarded as having poor prognostic results.

However, considerable progress in precision oncology has changed the approach to treating this condition. Owing to the development of medications that target the HER2 protein, such as monoclonal antibodies, antibody-drug conjugates, and tyrosine kinase inhibitors, the effectiveness of treatment, progression-free survival, and overall survival rates have significantly increased.

Breast cancer treatment has been revolutionized by precision surgery and targeted therapies in combination with chemotherapy, radiation treatment, and personalized care. Proper diagnosis and a multidisciplinary approach are also extremely important factors in successful treatment.

Due to the recent developments in targeted HER2 therapies, previously extremely aggressive cancer has become one of the most treatable types of breast cancer in many cases.

What is HER2?

HER2 is an abbreviation that denotes Human Epidermal Growth Factor Receptor 2 - a protein involved in regulating cell growth and repair in the breast.

Characteristics of HER2-positive breast cancer:

• Excessive HER2 protein production
• Rapid tumor growth
• Rapid cell division
• Malignancy and fast progression

HER2-positive breast cancers account for 15-20% of all cases.

What is the overview of HER2-positive breast cancer?

HER2-positive breast cancer might occur in:

• Early-stage breast cancer
• Locally advanced breast cancer
• Metastatic breast cancer

This type of breast cancer can impact:

• The younger population
• The older population
• Men with breast cancer (rare occurrence)

Targeted treatments can help destroy cancerous cells without damaging healthy cells.

What causes HER2-positive breast cancer?

The causes of HER2-positive breast cancer are still unknown, yet a few contributing factors could increase the probability of this type of cancer developing.

Genetic Changes

Genetic mutations inherited by people can trigger the development of breast cancer.

Hormonal and Reproductive Risks

Some hormones may influence breast cancer progression.

Age

With aging, there is an increased likelihood of developing breast cancer.

Lifestyle Risk Factors

Risk factors could be associated with:

• The prevalence of obesity
• Insufficient physical activity
• Tobacco smoking
• Consuming large amounts of alcohol.

Family History of Breast Cancer

Having a family history of breast cancer increases the general breast cancer risk.

What are the symptoms of HER2-positive breast cancer?

They are similar to those found in other types of breast cancers and may consist of:

• Breast lump or thickening
• Breast changes in shape or size
• Nipple discharge
• Breast skin changes (dimpling, puckering)
• Swelling or redness
• Underarm lump
• Breast pain or discomfort

Sometimes, symptoms may be absent at an early stage of the disease.

Why is early diagnosis important for HER2-positive breast cancer?

It is crucial for a favorable outcome and successful treatment. Screening assists in diagnosing breast cancer before symptoms occur.

Key screenings are as follows:

• Mammography
• Examination of the breast by the doctor
• Breast ultrasound
• Breast MRI imaging in select patients

Regular breast health checks are required for high-risk women.

How is HER2-positive breast cancer diagnosed?

Diagnostics and genetic testing are critical since treatment largely depends on them.

Clinical Breast Examination

Doctors examine the breast and axillary lymph nodes for abnormalities.

Mammography

The procedure can help identify:

• Breast mass suspicion
• Calculi
• Breast structural abnormalities

Digital mammography is more precise.

Breast Ultrasound

The test can be useful for examining:

• Suspicious lumps
• Dense breast tissue

MRI Breast Imaging

MRI provides highly accurate images that can show:

• Tumor boundaries
• Bilateral breast involvement
• Other lesions

Biopsy

This helps confirm the presence of breast cancer.

The following are determined by analyzing the tissue samples:

• The type of tumor
• The grading of the tumor
• Molecular features

HER2 Testing

Laboratory tests help establish if the cancer is HER2-positive.

Common Tests for HER2 Positivity include:

• Immunohistochemistry (IHC)
• Fluorescence In Situ Hybridization (FISH)

Hormone Receptors

The tumors may also show:

• Estrogen receptor (ER) positive status
• Progesterone receptors (PRs) positive status

How is HER2-positive breast cancer staged?

It describes:

• Size of the tumor
• Involvement of the lymph nodes
• Distant organ involvement

It may involve staging from early stages to later stages, which include:

• Local cancer
• Locally advanced cancer
• Metastatic breast cancer

Staging provides information required for appropriate treatment.

How is HER2-positive breast cancer treated?

Personalized treatments using various modalities are very common.

Surgery for HER2-Positive Breast Cancer

Surgeries are common in the early stages of cancer.

Breast-Conserving Surgery (lumpectomy)

This involves removing the tumor but saving the rest of the breast.

Mastectomy

It means eliminating the entire breast.

Sentinel Lymph Node Biopsy

Procedure to examine if cancer has spread to the lymph nodes while making minimal incisions during surgery.

Reconstructive Breast Surgery

Advancements in reconstructive surgery make it possible to restore breast appearance and provide emotional comfort after a surgical procedure.

Targeted Therapy for HER2-Positive Breast Cancer

Targeted therapy is an innovative solution that makes HER2-positive breast cancer treatment more efficient.

Targeted therapy drugs aim to treat only HER2-positive cancer cells, helping:

• to inhibit tumor growth
• to decrease the recurrence risk
• to increase survival rates

Targeted therapy can be prescribed before or after surgery, as well as for advanced cases.

Chemotherapy

In combination with targeted therapy, chemotherapy improves treatment outcomes.

Types of Chemotherapy:

• Pre-surgical chemotherapy
• Post-surgical chemotherapy
• Chemotherapy for metastatic disease

The chemotherapy used depends on the specific cancer.

Radiation Therapy

Radiation therapy may be a necessity after surgery to avoid cancer recurrence.

Advanced Types of Radiation Therapy Include:

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

Hormonal Therapy

Hormonal therapy can be a part of a personalized treatment plan in case of hormone receptor-positive tumors.

Immunotherapy

In some aggressive advanced stages of breast cancer, immunotherapy can be applied.

What new technologies treat HER2-positive breast cancer?

The emergence of new technologies in oncology has greatly transformed the treatment of breast cancer.

Emerging Breast Cancer Imaging Modalities

The following breast cancer imaging methods improve:

• Tumor detection
• Localizing the tumor
• Evaluating treatment effectiveness

• Digital Mammography
• MRI
• Ultrasound
• PET-CT

Precision Molecular Oncology

Tests include HER2 Testing and molecular characterization.

Minimally Invasive & Onco-plastic Surgery

Modern surgical methods enhance:

• Cosmesis
• Preservation of healthy tissue
• Recovery process

Precision Radiation Oncology

Improved radiation oncology reduces radiation exposure to surrounding healthy tissues, such as the heart and lungs.

What are breast cancer centers of excellence?

Centers offer comprehensive treatment of breast cancer using specialized multidisciplinary techniques.

Multidisciplinary Breast Cancer Treatment Team

Planning a personalized treatment plan may involve the collaboration of:

• Breast Surgical Oncologist
• Medical Oncologist
• Radiation Oncologist
• Radiologists
• Pathologists
• Plastic Reconstructive Surgeons
• Rehabilitation Specialists

Rehabilitation & Survivorship Care

Rehabilitation may include:

• Physiotherapy and arm rehabilitation
• Lymphedema management
• Nutrition counseling
• Psychosocial Counseling
• Long-Term Survivorship Surveillance

What is the prognosis for HER2-positive breast cancer?

Earlier, it used to be that patients with HER2-positive breast cancer faced an extremely poor prognosis.

However, nowadays, due to the development of targeted therapies, there has been a marked improvement in the following areas:

• Survival rates
• Control of disease
• Overall prognosis

HER2-positive breast cancer patients can respond very well to therapy today.

What is the importance of Long-Term Follow-Up?

Long-term follow-up for a patient with HER2 breast cancer is essential to:

• Evaluate recovery
• Monitor for any recurrence of the condition.
• Consider the adverse effects of the treatment received.

Why choose Tender Palm Super-Speciality Hospital for HER2-Positive Breast Cancer treatment in Lucknow, India?

 

To seek an Expert consultation for HER2-Positive Breast Cancer treatment in Lucknow, India:

Call us at +91-9076972161
Email at care@tenderpalm.com

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