top of page
Hands Showing Support

Understanding Antibody-based Therapies

Understanding how antibody therapies work, why they differ from chemotherapy, and what to expect during treatment

Antibody-based therapies have transformed the treatment of many cancers and are among the most precise treatments available in modern oncology.

Unlike traditional chemotherapy, which affects rapidly dividing cells throughout the body, antibody therapies are designed to recognise specific targets found on cancer cells or within the tumour environment.

These treatments can improve outcomes while often reducing some of the broader side effects associated with conventional chemotherapy. However, they can still produce important side effects and require careful monitoring throughout treatment.

Understanding how antibody therapies work can help patients feel more informed and confident throughout their treatment journey.

What Are Antibody-based Therapies?

Antibody-based therapies have transformed the treatment of many cancers and are among the most precise treatments available in modern oncology.

​

Unlike traditional chemotherapy, which affects rapidly dividing cells throughout the body, antibody therapies are designed to recognise specific targets found on cancer cells or within the tumour environment.

​

These treatments can improve outcomes while often reducing some of the broader side effects associated with conventional chemotherapy. However, they can still produce important side effects and require careful monitoring throughout treatment.

Understanding how antibody therapies work can help patients feel more informed and confident throughout their treatment journey.

​

The "Smart Missile" Concept

Many patients find it helpful to think of antibody therapies as guided missiles.

Traditional chemotherapy circulates throughout the body and affects many rapidly dividing cells.

Antibody therapies, by contrast, are designed to identify a specific target and attach directly to it.

Once attached, they can:

  • Block important growth signals

  • Recruit the immune system

  • Deliver a treatment payload directly to the cancer cell

This targeted approach is one reason antibody therapies have become such an important part of modern cancer care.

​​​

How Do Antobody-based Therapies Work?

Different antibody therapies work in different ways.

​

Blocking Growth Signals

Some cancers depend on specific receptors to receive instructions to grow and divide.

Certain antibodies attach to these receptors and block those signals.

Examples include:

  • Trastuzumab (Herceptin)

  • Pertuzumab (Perjeta)

  • Cetuximab (Erbitux)

By blocking these pathways, cancer growth may slow or stop.

 

Helping the Immune System Recognise Cancer

Some antibodies act like markers.

Once attached to a cancer cell, they make it easier for the immune system to identify and destroy that cell.

In effect, they place a visible "target" on the cancer for immune cells to attack.

​

Blocking the Blood Supply

Tumours require oxygen and nutrients to grow.

Certain antibodies work by interfering with the development of new blood vessels.

Examples include:

  • Bevacizumab (Avastin)

​By reducing the tumour's blood supply, growth may be slowed.

 

Delivering Treatment Directly to Cancer Cells

Some of the newest antibody therapies combine an antibody with a powerful anti-cancer drug.

These treatments are known as Antibody-Drug Conjugates (ADCs)

The antibody acts as a guidance system, carrying the drug directly to the cancer cell.

Once attached, the drug is released where it is needed most.

Examples include:

  • Trastuzumab emtansine (T-DM1)

  • Trastuzumab deruxtecan (Enhertu)

This approach aims to maximise effectiveness while reducing exposure to healthy tissues

​

  • Breast cancer

  • Colorectal cancer

  • Lung cancer

  • Gastric cancer

  • Ovarian cancer

  • Lymphoma

  • Head and neck cancers

  • Several blood cancers

Which Cancers Can Be Treated With Antibody-based Therapies?

Antibody therapies are now used in many cancers, including:​​​​​​​​

​

Breast cancer

​

Colorectal cancer

​

Lung cancer​

​

Gastric cancer

Ovarian cancer

​

Lymphoma

​

Head and neck cancers

​

Several blood cancers

Whether an antibody therapy is appropriate depends on the specific characteristics of the tumour and the presence of particular molecular targets.

How Are Antibody-based Therapies Different From Chemotherapy?                                                            ​

Chemotherapy

Targets rapidly dividing cells

Acts broadly throughout the body

Often affects many healthy tissues

Hair loss is common with many regimens

Side effects often result from effects on rapidly dividing cellsUsually given in cycles         

Antibody Therapy

Targets specific proteins or receptors

Acts on selected targets

Generally more selective

Hair loss is less common with many antibody therapies

May be given regularly over many months or years

Although antibody therapies are often more precise, they can still cause significant side effects and require close monitoring.

Why Do Side Effects Occur?

 

Even though antibody therapies are designed to be selective, the targets they recognise may also be present in healthy tissues.

In addition, activating the immune system or interfering with normal biological pathways can sometimes affect healthy organs.

The pattern of side effects varies considerably depending on:

  • The specific antibody being used

  • The cancer being treated

  • Previous treatments

  • Individual biological factors

Common Side Effects of Antibody-based Therapies

​​​​​​​​​​​​

Not everyone experiences side effects, and many people tolerate treatment well.

However, some common challenges include:​​​​

​

When Should You Contact Your Oncology Team?​

 

Always follow the advice provided by your oncology team.

Contact your team promptly if you experience:

  • A temperature of 38°C or above

  • Shortness of breath

  • Chest pain

  • Significant skin reactions

  • Persistent diarrhoea

  • Severe fatigue

  • Rapidly worsening symptoms

  • Any symptom specifically highlighted by your treatment team

Early reporting often helps prevent more serious complications.

Why Early Support Matters​

 

Different antibody therapies are associated with different patterns of side effects.

Understanding the treatment pathway allows supportive care to be introduced proactively rather than waiting until symptoms significantly affect quality of life.

Depending on the treatment being received, early support may focus on:

  • Fatigue management

  • Maintaining physical function

  • Supporting recovery between treatments

  • Managing skin and soft tissue changes

  • Sleep support

  • Emotional resilience

  • Education and self-management strategies

The goal is to help individuals maintain function, independence and quality of life throughout treatment.

How Rowan Health Supports Patients

At Rowan Health, support is organised around personalised treatment-pathway support protocols rather than standardised treatment packages.

Different antibody therapies may be associated with different patterns of side effects and recovery challenges. Our approach aims to anticipate these challenges where possible and provide proactive support throughout treatment and recovery. This aligns with the wider Rowan Health model of tailoring support to the specific treatment pathway and likely areas of vulnerability.

Step 1 – Understanding the Immunotherapy Pathway
​

We begin by understanding:

  • The cancer diagnosis

  • The antibody therapy being received

  • Previous treatments

  • Current symptoms

  • Recovery goals

Step 2 - Identifying Areas of Vulnerability

​

We assess factors most likely to affect quality of life, including:

  • Fatigue

  • Skin and soft tissue changes

  • Digestive symptoms

  • Sleep disruption

  • Reduced physical function

  • Emotional wellbeing

Step 3 – Building a Personalised Support Protocol

​​​​​

Depending on the individual's needs, the protocol may combine:

  • Symptom management

  • Rehabilitation

  • Recovery support

  • Education and self-management strategies

  • Selected therapeutic interventions

Step 4 - Monitoring, Adapting & Supporting Recovery

​

Treatment and recovery are dynamic processes.

Protocols are reviewed and adapted as symptoms, treatment schedules and recovery priorities evolve.

Our Goal

​​Our objective is not simply to respond to symptoms as they arise.

It is to provide proactive, coordinated support that helps individuals:

  • Maintain function and independence

  • Improve quality of life

  • Strengthen resilience

  • Reduce the burden associated with treatment

  • Support recovery and rehabilitation

  • Navigate survivorship with greater confidence

​​

The type and severity of side effects varies according to the specific antibody therapy being used, the cancer being treated and the individual's overall health.

Not everyone experiences the same challenges. However, some of the most common areas where patients seek supportive care include:​​​​​​​​​​

​

Antibody-based Therapies – Specific Areas We Commonly Support

Understanding Treatment, Recovery and Support

Understanding cancer and its treatments can feel overwhelming. Our guides explain modern cancer treatments, common side effects, recovery and survivorship in clear, accessible language.

Managing Side Effects

​

➡ Why Side Effects Happen

➡ Cancer-Related Fatigue

➡ Chemo Brain

➡ Peripheral Neuropathy

➡ Xerostomia (Dry Mouth)

➡ Mucositis

➡ Skin and Nail Changes During Cancer Treatment

➡ Sleep Difficulties

Recovery & Support

 

➡ Cancer Support & Survivorship

➡ Cancer Support Partnership

➡ Carers' Wellbeing

➡ Supporting Recovery After Treatment

READY TO TALK ?

A free 10-minute conversation costs nothing.

Whether you are living with cancer, recovering after treatment, managing a chronic condition or supporting someone through serious illness, we would be delighted to discuss how Rowan Health may be able to help.

​

bottom of page