A study looking at chemotherapy, pembrolizumab and lenvatinib for neuroendocrine tumours (PELICAN)

Cancer type:

Neuroendocrine tumour (NET)

Status:

Open

Phase:

Phase 2

This study is looking at standard chemotherapy and pembrolizumab followed by lenvatinib and pembrolizumab.

It is for people with neuroendocrine tumours who:

  • have cancer cells that look very different to normal cells – this is also called high grade cancer
  • are well enough to have treatment that reaches the whole body (systemic treatment)
  • haven’t started treatment yet

More about this trial

Researchers are looking for ways to improve treatment for people who have neuroendocrine tumours.

In this study they are looking at pembrolizumab and lenvatinib.

Pembrolizumab is a type of immunotherapy Open a glossary item. It helps the immune system Open a glossary item to find and kill cancer cells.

Lenvatinib is a cancer growth blocker Open a glossary item. It stops signals that cancer cells use to divide and grow. It also stops cancer cells from forming new blood vessels, which they need to keep growing.

In this study, these drugs are used with carboplatin and etoposide chemotherapy. Carboplatin and etoposide is a type of standard treatment Open a glossary item for high grade neuroendocrine tumours. These chemotherapy drugs destroy quickly dividing cells, such as cancer cells.

Pembrolizumab and lenvatinib are already used in the UK to treat other types of cancer. But not in combination with each other or with carboplatin and etoposide. They are not as yet used to treat high grade neuroendocrine tumours.

In this study everyone has treatment with etoposide, carboplatin and pembrolizumab. And then lenvatinib and pembrolizumab as maintenance treatment Open a glossary item.

The main aims of the study are to find out:

  • how well this treatment combination works for people with high grade neuroendocrine tumours
  • how safe the treatment is
  • more about the side effects of treatment
  • how treatment affects the quality of life Open a glossary item of people taking part

Who can enter

The following bullet points are a summary of the entry conditions for this study. Talk to your doctor or the study team if you are unsure about any of these. They will be able to advise you. 

Who can take part

You may be able to join this study if all of the following apply. You:

  • have a neuroendocrine tumour and the cancer cells look very abnormal. This is also called a grade 3 (high grade) poorly differentiated neuroendocrine carcinoma (NEC).
  • have a measurement score called a Ki-67 index of more than 20% - this means that more than 2 in every 10 cancer cells (20%) are dividing. Your doctor will know this.
  • have cancer that a doctor can measure on a scan
  • have not had treatment that reaches your whole body (systemic treatment) for cancer that has spread to another part of the body
  • have satisfactory blood test results
  • are willing to use reliable contraception during treatment and for a period afterwards if there is any chance you or your partner could become pregnant
  • are well enough to be up and about for at least half the day but might not be able to work (performance status 0, 1 or 2
  • are at least 18 years old

Who can’t take part

Cancer related
You cannot join this study if any of these apply. You:

  • have either small cell lung cancer (SCLC) or large cell lung cancer
  • have Merckel cell cancer
  • have had had radiotherapy within 2 weeks of starting treatment or you have certain ongoing radiotherapy side effects. You might be able to take part if you have had radiotherapy a week before starting treatment if it was for symptom control.
  • have cancer that has spread to the brain, or spinal cord unless it isn’t causing symptoms, has been treated and is stable
  • have had any other cancer unless you’ve had treatment with no sign of your cancer for at least 3 years since starting treatment. This is apart from successfully treated carcinoma in situ Open a glossary item of the cervix, non melanoma skin cancer Open a glossary item, early non invasive bladder cancer or other very early cancers. Your doctor will know more.
  • have had certain checkpoint inhibitors Open a glossary item before, these are anti PD-1, anti PD-L1 or anti PD-L2 drugs. Your doctor will know this.

Medical conditions
You cannot join this study if any of these apply. You:

  • have a problem with your immune system Open a glossary item or have had treatment that damps down the immune system. This includes steroids Open a glossary itemwithin one week of starting study treatment unless it is a low dose.
  • have an active infection that needs treatment that reaches your whole body (systemic treatment)
  • have HIV, hepatitis B, active hepatitis C or active tuberculosis (TB)
  • have had pneumonitis Open a glossary item which was not caused by infection and needed steroid treatment. Or you have pneumonitis at the moment.
  • have scarring of the lungs called interstitial lung disease
  • have an active autoimmune condition Open a glossary item that needed treatment in the past 2 years apart from certain ones. Your doctor will know this.
  • have high blood pressure that isn’t well controlled with medication
  • have had a major heart problem Open a glossary item such as a heart attack in the 6 months before starting the study treatment
  • have a bleeding or clotting Open a glossary item problem which means you are at risk of a severe bleed
  • have protein in your urine. Your doctor will check this.
  • have had major surgery within 3 weeks of your first dose of study treatment
  • have any other medical condition or mental health condition that might affect you taking part in the study

Other
You cannot join this study if any of these apply. You:

  • have had a live vaccine Open a glossary item within 30 days of the start of study treatment. Please note that the COVID-19 vaccine is allowed as it isn’t a live vaccine.
  • have taken part in another study looking at an experimental drug or device within 4 weeks of having treatment in this study
  • are allergic to lenvatinib, pembrolizumab, carboplatin or etoposide. Or anything that they contain.
  • are pregnant or breastfeeding

Trial design

This is a phase 2 study. The researchers would like around 20 people to take part.

Everyone has the same treatment. You usually have treatment as an outpatient Open a glossary item.

Chemotherapy and pembrolizumab
You have etoposide, carboplatin and pembrolizumab as cycles of treatment Open a glossary item. Each cycle is 21 days.

You have pembrolizumab, etoposide and carboplatin as a drip into a vein. You have these drugs on day 1 of each treatment cycle. Your healthcare team will let you know how long each drip takes.

On day 2 and day 3 of your treatment cycle you have etoposide as either:

  • capsules twice a day
  • a drip into a vein

You then have a break until you start your next treatment cycle.

 You have up to 4 cycles of treatment.

Pembrolizumab and lenvatinib maintenance
You have pembrolizumab as a drip into a vein. You have it once every 3 weeks. This is one cycle of treatment.

Lenvatinib is a capsule. You take it once a day every day.

You have treatment for up to 2 years as long as it is working, and the side effects aren’t too bad.

After the 2 years you might be able to continue with lenvatinib if it’s working well. Your doctor will talk to you about this.

Blood and tissue samples
The researchers ask you to give some extra blood, urine and poo samples. Where possible, you have these at the same time as your routine blood tests. 

When you join the study, they ask to use a sample of tissue from a recent biopsy Open a glossary item or for you to give a new biopsy sample if needed.

They also ask for permission to take an extra biopsy sample:

  • when you join the study
  • once during treatment

They plan to use the samples to:

  • see how well the treatment is working 
  • look at genes Open a glossary item to understand more about neuroendocrine tumours  
  • look for substances called biomarkers Open a glossary item to help work out why treatment might work for some people and not for others

You do not have to agree to give these extra samples. You can say no and still take part in the study.

Quality of life
The study team ask you to fill out a questionnaire:

  • before you start treatment
  • at set times during treatment

The questionnaire asks about side effects and how you’ve been feeling. This is called a quality of life study.

Hospital visits

You see the doctor and have tests before you can take part. These include:

  • blood tests
  • a physical examination Open a glossary item
  • urine test
  • biopsy Open a glossary item - if there is not a recent sample available that the study team can access
  • CT scan
  • heart trace (ECG)

You see the study team for regular check ups and blood tests during treatment.

You have a CT scan:

  • around 3 weeks after you finish your last chemotherapy and pembrolizumab treatment
  • every 9 weeks while you are on maintenance treatment

When you finish treatment, you see the doctor 1 month later for a check up and you have some of the same tests you have had before.

Follow up
The study team follow you up every 8 weeks for up to 2 years. The team give you a phone call. This is to see how you are getting on.

Side effects

The study team monitor you during treatment and afterwards. Contact your advice line or tell your doctor or nurse if any side effects are bad or not getting better.

Pembrolizumab can affect the immune system Open a glossary item. This may cause inflammation Open a glossary item and other reactions in different parts of the body. For many people the inflammation and reactions are not too bad. For some people they can cause serious side effects. 

These side effects could happen during treatment or months after treatment has finished. Rarely, these side effects could be life threatening. Your doctor or nurse can explain what these side effects are, the risk of them happening and what to look out for.
 
If you have any of these side effects tell your doctor or nurse as soon as possible. You should tell them that you are on or have been on an immunotherapy
.

 
The most common side effects of pembrolizumab are:
  • skin rash, itchy skin or loss of skin colour
  • diarrhoea 
  • cough
  • joint, back or stomach pain
  • high temperatures (fever)
  • not enough thyroid Open a glossary item hormone so you may feel tired, gain weight, feel cold or have constipation 
  • low levels of salt in the blood that may cause tiredness, confusion, headaches, muscle cramps or feeling or being sick

The most common side effects of lenvatinib are:

  • high or low blood pressure
  • loss of appetite, weight loss or taste changes 
  • feeling or being sick
  • constipation or diarrhoea
  • tiredness or weakness (fatigue)
  • stomach pain 
  • indigestion
  • dry, sore or inflamed mouth or throat
  • high levels of protein in your urine
  • hoarse voice
  • headache
  • sore or red palms of the hand and or soles of the feet (hand foot syndrome
  • joint, muscle, back, arm or leg pain
  • a cough
  • an increased risk of bruising or bleeding
  • swelling of the legs
  • not enough thyroid Open a glossary item hormone causing tiredness, weakness, dry skin, hair loss and feeling cold 
  • skin rash
  • feeling dizzy
  • problems with sleeping 
  • hair loss
  • urine infections – you might find it painful to wee or you’re weeing more often
  • low levels of calcium and potassium in the blood which can cause problems with your heartbeat
Please note, there are some other serious side effects of lenvatinib. In some cases, these could be life threatening. You doctor will tell you more about these and what to watch out for. You should tell your study doctor or go to the hospital straight away if you have any of them.
 
These include:
  • having a stroke Open a glossary item or a mini stroke causing symptoms such as weakness or numbness on one side of the body 
  • blood clots in the legs causing a warm or swollen calf
  • blood clots in the lungs causing shortness of breath 
  • heart problems such as a rapid heartbeat or a heart attack 
  • bleeding inside the body causing black or bloody poo
  • a fistula Open a glossary item
  • low levels of fluid in the body (dehydration) and your kidneys not working well
  • heart failure which may cause severe shortness of breath
  • liver damage which may cause yellowing of the skin or eyes (jaundice), tiredness or sickness, loss of appetite, tummy pain or high temperature
  • brain swelling that may cause confusion, drowsiness, poor concentration or loss of consciousness

The study doctor will talk to you about all the possible side effects of treatment. You will have a chance to ask any questions you may have. 

We have more information about:

Location

London
Manchester

Recruitment start:

Recruitment end:

How to join a clinical trial

Please note: In order to join a trial you will need to discuss it with your doctor, unless otherwise specified.

Please note - unless we state otherwise in the summary, you need to talk to your doctor about joining a trial.

Chief Investigator

Dr David Pinato

Supported by

Imperial College Healthcare NHS Trust
Merck, Sharp & Dohme LLC

If you have questions about the trial please contact our cancer information nurses

Freephone 0808 800 4040

Last review date

CRUK internal database number:

19803

Please note - unless we state otherwise in the summary, you need to talk to your doctor about joining a trial.

Last reviewed:

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