A cancer diagnosis often leads to a long list of treatment terms that can be difficult to understand. Immunotherapy and targeted therapy are two important types of modern cancer treatment, but they work in different ways and are suitable for different clinical situations.

The choice between them is not usually a simple matter of deciding which treatment is "better." Doctors consider the type of cancer, stage of disease, pathology findings, molecular or biomarker results, previous treatments, overall health and the goals of treatment before recommending a treatment plan. The National Cancer Institute notes that biomarker testing can help identify characteristics of a cancer that may influence whether certain targeted therapies or immunotherapies are appropriate.

Medicover Cancer Institute, Arilova, Visakhapatnam lists both immunotherapy and targeted therapy among its medical oncology treatment options. Its oncology services also include chemotherapy, hormone therapy, surgery and radiation therapy, allowing treatment planning to be based on the individual cancer rather than on a single treatment method.

This guide explains the difference between immunotherapy and targeted therapy, how doctors evaluate these options, what testing may be needed, and what patients should discuss with their oncology team.

What Is Immunotherapy?

Immunotherapy is a type of cancer treatment that helps the body's immune system recognise or respond to cancer.

Cancer cells can sometimes avoid being detected or effectively attacked by the immune system. Certain immunotherapy medicines alter immune-system activity so that cancer cells can be recognised or attacked more effectively.

One important group of immunotherapies is immune checkpoint inhibitors. These medicines interfere with signals that can prevent immune cells from attacking cancer. Other forms of immunotherapy work through different mechanisms.

Importantly, immunotherapy is not appropriate for every cancer or every patient. Its use depends on factors such as the cancer type, stage, previous treatment, biomarkers and individual health circumstances.

When may immunotherapy be considered?

Depending on the cancer, immunotherapy may be considered:

• As an initial treatment
• After another treatment
• Together with other cancer therapies
• For advanced or metastatic disease
• For selected cancers with relevant biomarkers
• As part of a combination treatment plan

The exact role of immunotherapy varies substantially between different cancers.

What Is Targeted Therapy?

Targeted therapy uses medicines designed to act on specific molecular or cellular features that help cancer cells grow, divide or spread.

Unlike treatments that broadly affect rapidly dividing cells, targeted therapies are designed around particular biological characteristics of a cancer.

Many targeted therapies act on proteins or molecular pathways involved in cancer growth. Some are small-molecule medicines, while others are monoclonal antibodies.

Because targeted therapy depends on the presence of a relevant target, doctors may recommend biomarker or molecular testing before deciding whether a particular targeted medicine is appropriate.

For example, certain genetic changes or protein abnormalities may identify a potential target for a specific medicine. However, the presence or absence of a biomarker is only one part of treatment decision-making.

Immunotherapy vs Targeted Therapy: What Is the Difference?

The easiest way to understand the difference is to look at what each treatment is trying to influence.

Neither treatment is universally appropriate for all patients.

How Does Immunotherapy Work?

The immune system naturally identifies abnormal cells, but cancer can develop mechanisms that allow it to avoid immune attack.

Some immunotherapies help remove these barriers.

For example, immune checkpoint inhibitors target proteins involved in immune regulation. Blocking certain checkpoints can allow immune cells to become more active against cancer cells.

However, increasing immune activity can also affect healthy tissues. This is why immunotherapy has a distinct set of potential side effects.

Patients may experience problems involving the:

• Skin
• Digestive system
• Liver
• Lungs
• Endocrine system
• Kidneys
• Heart
• Nervous system

Not every patient develops these complications, and their severity varies. Some immune-related reactions require prompt medical treatment.

How Does Targeted Therapy Work?

Targeted therapy focuses on a particular biological feature that contributes to cancer growth or survival.

Depending on the medicine, targeted treatment may:

• Block a protein involved in cancer growth
• Interrupt a signalling pathway
• Prevent tumour cells from receiving growth signals
• Interfere with blood-vessel formation
• Help the immune system recognise cancer cells
• Deliver a cancer-killing substance to cells carrying a particular target

Because cancer cells can change over time, resistance to targeted therapy can sometimes develop. This may happen when the target changes or when cancer cells find another way to continue growing.

That is one reason ongoing monitoring is an important part of cancer treatment.

When Might Doctors Consider Immunotherapy?

Immunotherapy may be considered when the patient's cancer has characteristics associated with a potential response to an immunotherapy approach.

The decision can depend on:

Cancer Type

Different cancers respond differently to immunotherapy. A treatment that is appropriate for one cancer may not have the same role in another.

Cancer Stage

The stage of cancer helps determine how extensive the disease is and influences the overall treatment strategy.

Biomarkers

Some biomarkers can help identify patients who may be candidates for particular immunotherapies.

Previous Treatment

Doctors may consider whether the patient has already received chemotherapy, radiation therapy, surgery, targeted treatment or other systemic therapies.

Overall Health

The patient's general health, existing medical conditions, medications and ability to tolerate treatment can also influence the treatment plan.

When Might Doctors Consider Targeted Therapy?

Targeted therapy generally requires evidence that the cancer contains a relevant treatment target.

This may involve molecular or biomarker testing.

According to the National Cancer Institute, biomarker testing can examine genes, proteins and other substances in cancer that may provide information useful for treatment selection. Some targeted therapies only work when particular biomarkers are present.

Doctors may therefore consider:

• Cancer type
• Pathology results
• Molecular alterations
• Protein expression
• Biomarker results
• Cancer stage
• Previous treatments
• Overall health
• Available approved treatment options

A patient should not assume that having a particular cancer automatically means that targeted therapy will be suitable.

Can Immunotherapy and Targeted Therapy Be Used Together?

In some cancers, different treatment approaches may be combined.

Depending on the diagnosis, doctors may consider combinations involving:

• Immunotherapy
• Targeted therapy
• Chemotherapy
• Radiation therapy
• Surgery
• Hormone therapy

The combination depends on the cancer and the evidence supporting that treatment strategy.

At Medicover Cancer Institute, the published Medical Oncology information includes chemotherapy, targeted therapy, immunotherapy and hormone therapy as systemic cancer-treatment options, with treatment selection based on cancer type, stage, pathology, molecular characteristics and the patient's overall health.

How Doctors Choose Between Immunotherapy and Targeted Therapy

There is no single test that determines the treatment for every cancer.

Instead, oncologists generally evaluate multiple pieces of information.

1. Confirming the Cancer Diagnosis

Before treatment begins, doctors need an accurate diagnosis.

This may involve:

• Biopsy
• Histopathology
• Immunohistochemistry
• Blood tests
• Imaging
• Other diagnostic investigations

The precise diagnostic pathway depends on the suspected cancer.

2. Determining the Cancer Stage

Staging helps determine how far the cancer has developed or spread.

Depending on the cancer, doctors may use imaging such as:

• CT
• MRI
• PET-CT
• Ultrasound
• X-ray

Medicover Cancer Institute lists 4D PET-CT, MRI, CT, ultrasound, digital X-ray and nuclear medicine among its cancer diagnostic and medical-technology capabilities.

3. Reviewing Biomarker and Molecular Results

This can be particularly important when considering targeted therapy and some immunotherapy approaches.

Biomarker testing can identify genetic changes, proteins or other characteristics of a tumour that may influence treatment selection.

The results do not automatically determine treatment. They need to be interpreted alongside the patient's diagnosis and clinical situation.

4. Considering Previous Treatment

A patient who has already received treatment may have different options from someone who has just been diagnosed.

Doctors may review:

• Previous chemotherapy
• Radiation therapy
• Surgery
• Targeted therapy
• Immunotherapy
• Treatment response
• Previous side effects
• Disease recurrence or progression

5. Considering Overall Health

Two people with the same cancer may not receive identical treatment.

The oncology team may consider:

• Age
• General health
• Other medical conditions
• Organ function
• Current medications
• Previous treatment tolerance
• Performance status
• Patient preferences

6. Discussing Treatment Goals

Treatment goals can vary.

Depending on the situation, treatment may aim to:

• Eliminate cancer
• Reduce tumour size
• Control cancer growth
• Reduce the risk of recurrence
• Delay progression
• Relieve symptoms
• Maintain quality of life

The treatment objective should be clearly explained before therapy begins.

Tests That May Be Needed Before Treatment

The exact tests depend on the cancer.

A cancer treatment evaluation may involve:

Biopsy and Pathology

A tissue sample may be examined to confirm the cancer and identify its characteristics.

Immunohistochemistry

This can help identify specific proteins in tumour cells and may contribute to classification and treatment planning.

Molecular or Biomarker Testing

These tests can identify certain genetic or molecular characteristics that may influence treatment choices.

Blood Tests

Blood investigations may help assess overall health and establish whether a patient is ready for a particular treatment.

Imaging

Imaging can help determine tumour location, extent and response to treatment.

The important point is that not every patient needs every test. The treating oncologist determines which investigations are clinically appropriate.

What Are the Side Effects?

Both treatments can cause side effects, but their patterns can differ.

Immunotherapy Side Effects

Because immunotherapy activates or modifies the immune response, some side effects occur when the immune system affects healthy tissues.

Possible problems include:

• Skin rash
• Fatigue
• Diarrhea
• Nausea
• Fever
• Inflammation of organs
• Breathing problems
• Hormonal disturbances

More serious immune-related complications can affect organs such as the lungs, liver, kidneys, heart or digestive system.

Patients should report new or worsening symptoms to their oncology team rather than assuming they are normal treatment effects.

Targeted Therapy Side Effects

Side effects depend on the particular targeted medicine.

Possible effects include:

• Diarrhea
• Liver problems
• Fatigue
• Skin changes
• Rash
• Mouth sores
• Nail changes
• High blood pressure
• Problems with blood clotting or wound healing

Not every patient experiences these effects, and the risks vary significantly between different targeted medicines.

Which Treatment Is Better: Immunotherapy or Targeted Therapy?

There is no universally better treatment.

The clinically relevant question is:

Which treatment, if any, is appropriate for this particular cancer and patient?

For one patient, biomarker testing may identify a target that makes targeted therapy an option. For another, the cancer may have characteristics that make immunotherapy worth considering. Some patients may receive chemotherapy, radiation, surgery, hormone therapy or combinations of treatments instead.

In some situations, neither immunotherapy nor targeted therapy will be appropriate.

That is why treatment decisions should be made by a qualified oncology team after reviewing the complete clinical picture.

Cancer Treatment at Medicover Cancer Institute, Arilova, Visakhapatnam

Medicover Cancer Institute in Arilova provides a multidisciplinary cancer-care setting that includes Medical Oncology, Surgical Oncology, Radiation Oncology, Hemato-Oncology, Breast Oncology, Thoracic Oncology, Uro Oncology and Oncoplastic Surgery. The institute also lists bone marrow and stem-cell transplant services and pediatric oncology.

Its Medical Oncology service specifically lists chemotherapy, targeted therapy, immunotherapy and hormone therapy among systemic treatment options.

The institute also lists advanced cancer technologies including 4D PET-CT, MRI, CT, ultrasound, digital X-ray, nuclear medicine, IMRT, IGRT, SBRT and SRS, which can support diagnosis, staging and treatment planning where clinically appropriate.

For patients considering cancer treatment in Visakhapatnam, the relevant specialist and treatment pathway should be confirmed after reviewing the diagnosis, pathology, imaging and other medical records.

Preparing for an Oncology Consultation

If you are seeking an oncology opinion, particularly after receiving treatment or a diagnosis elsewhere, take as many relevant medical records as possible.

Useful documents may include:

• Biopsy report
• Histopathology report
• Immunohistochemistry results
• Molecular or biomarker reports
• CT/MRI/PET-CT reports
• Previous scan images where available
• Blood-test results
• Previous treatment summaries
• Chemotherapy records
• Radiation treatment records
• Surgical reports
• Current medication list
• Previous discharge summaries

For patients travelling from another city or country, organizing these records before the consultation can make the initial assessment more efficient.

The Medicover Cancer Institute's oncology information also recommends bringing previous scans, pathology reports, laboratory results, prescriptions and treatment summaries when seeking specialist evaluation.

Questions to Ask Your Oncologist

Before starting immunotherapy, targeted therapy or another cancer treatment, consider asking:

1. What type and stage of cancer do I have?
2. What do my pathology results show?
3. Do I need biomarker or molecular testing?
4. Is immunotherapy appropriate for my cancer?
5. Is targeted therapy an option for my cancer?
6. What does my biomarker report mean?
7. Could more than one treatment be appropriate?
8. What is the goal of the proposed treatment?
9. What side effects should I watch for?
10. Which symptoms require urgent medical attention?
11. How will we monitor whether treatment is working?
12. How often will I need follow-up?
13. Are there alternative treatment approaches I should discuss?
14. Would a second oncology opinion be useful in my situation?

These questions can help patients understand why a particular treatment is being recommended, rather than simply asking which treatment is strongest.

When Should You Contact Your Cancer Care Team Urgently?

Patients receiving cancer treatment should know which symptoms require immediate medical attention.

Seek urgent medical assessment for symptoms such as:

• Severe difficulty breathing
• New or severe chest pain
• Severe allergic-type reaction
• Significant confusion or sudden neurological symptoms
• Persistent high fever
• Severe or rapidly worsening diarrhea
• Severe vomiting or inability to keep fluids down
• Significant bleeding
• Severe weakness or fainting
• New severe abdominal pain
• Rapidly worsening symptoms after treatment

Immunotherapy can cause immune-related inflammation affecting different organs, while cancer treatments more generally can produce a range of serious complications. Patients should receive specific emergency instructions from their treating team based on the medicine they are receiving.

Conclusion

Immunotherapy and targeted therapy are different approaches to cancer treatment, and neither is automatically the right choice for every patient.

Immunotherapy works by modifying the immune response to cancer, while targeted therapy is designed to act on specific molecular or cellular features involved in cancer growth. Biomarker testing can be an important part of determining whether certain targeted therapies or immunotherapies may be appropriate.

The most appropriate treatment depends on the cancer type, stage, pathology, biomarkers, previous treatment, overall health and treatment goals.

If you or a family member has received a cancer diagnosis, discuss the available options with a qualified oncologist and bring your previous medical records, pathology reports and imaging results to the consultation.

For patients seeking cancer specialist care in Visakhapatnam, Medicover Cancer Institute, Arilova provides Medical Oncology alongside Surgical Oncology, Radiation Oncology, Hemato-Oncology and other cancer-focused services.

7. FAQs

Is immunotherapy the same as targeted therapy?

No. Immunotherapy works by modifying or strengthening aspects of the immune response against cancer, while targeted therapy acts on specific molecular or cellular targets involved in cancer growth. Some treatments can interact with immune mechanisms, so the exact classification depends on the medicine.

How do doctors decide between immunotherapy and targeted therapy?

Doctors consider the cancer type, stage, pathology, biomarker or molecular results, previous treatments, overall health and treatment goals. Biomarker testing can help determine whether a cancer has characteristics that make certain targeted treatments or immunotherapies appropriate.

Does targeted therapy require genetic testing?

Not always, but many targeted treatments require identification of a relevant molecular or protein target. Depending on the cancer and medicine being considered, doctors may recommend molecular or biomarker testing using tumour tissue, blood or another appropriate sample.

Can immunotherapy and targeted therapy be given together?

In selected cancers and treatment situations, different systemic therapies may be combined. However, this is not appropriate for everyone. The treatment combination depends on the cancer, biomarkers, previous treatment and available clinical evidence.

How long does immunotherapy or targeted therapy last?

There is no single treatment duration. The schedule depends on the specific medicine, cancer type, stage, treatment response, side effects and the treatment plan developed by the oncology team.

What side effects should patients watch for during immunotherapy?

Side effects can include fatigue, rash, diarrhea, nausea and inflammation involving different organs. Some immune-related reactions can become serious, so new or worsening symptoms should be reported promptly to the treating team.

Can I get a second opinion before starting cancer treatment?

Yes. A second oncology opinion can help a patient better understand the diagnosis and available treatment options, particularly when treatment is complex or involves several possible approaches. Previous pathology, imaging and treatment records should be provided for meaningful review.

Is immunotherapy available at Medicover Cancer Institute, Arilova?

Yes. Medicover Cancer Institute's published Medical Oncology information lists immunotherapy as one of its cancer-treatment options. The hospital also lists targeted therapy, chemotherapy and hormone therapy. Suitability for a particular patient must be determined by the treating oncology team.

8. Medical Disclaimer

Medical Disclaimer: This article is intended for general educational and informational purposes only. It does not replace professional medical consultation, diagnosis or treatment. Cancer treatment decisions are highly individual and depend on factors including cancer type, stage, pathology, biomarkers, previous treatment, overall health and other clinical considerations. Immunotherapy, targeted therapy or any other treatment should only be started, changed or stopped under the guidance of a qualified healthcare professional. If you experience severe or rapidly worsening symptoms during cancer treatment, seek appropriate medical attention promptly.