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CION Cancer Clinics
Withdrawing from a haematology trial: your rights and next steps | CION Cancer Clinics
You can withdraw from a clinical trial at any time, without giving a reason, and your right to standard care stays the same. The safe way is to tell the trial doctor first, not to simply stop the medicine or stop coming. This page explains why people leave, the steps to withdraw, what changes afterwards, and what happens to the information already collected. At CION Cancer Clinics, our haematology team supports patients and families through treatment, cost questions and life at home.
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Medically reviewed by Dr. Basudev PokhrelConsultant Haematologist · last reviewed September 2026, next review due September 2027
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On this page
- Can you leave a clinical trial after you have started?
- Why do people leave a blood cancer trial?
- How do you withdraw from a trial safely?
- What changes, and what stays the same, when you leave?
- What do families fear about leaving a trial?
- Which words on the consent form matter when you leave?
- What happens to your treatment next, and what can this page not tell you?
- Common questions about withdrawing from a trial
The short answer
Can you leave a clinical trial after you have started?
Yes. You can leave a clinical trial at any time, for any reason, and you do not have to explain why. Leaving should not change the respect or the standard care you receive, but tell the trial doctor first so the change is made safely.
Why this right exists
Taking part in a trial is voluntary from the first day to the last. In India, every trial must be approved by an ethics committee, and your consent form must say plainly that you are free to withdraw. Your signature on that form is not a contract that locks you in.
Why you should not simply stop coming
Some blood cancer treatments cannot be stopped suddenly without risk. Counts may need watching for a while after the last dose, and some medicines need a planned handover to something else. If you stop attending without a word, no one is watching for those problems. A short conversation protects you.
Who this page is written for
It is for a patient thinking about leaving, and for the son, daughter or spouse who is worried and wants to know what is allowed. It does not tell you whether you should leave. That is your choice, made with the facts in front of you.
Never stop, skip or change a trial medicine on your own while you decide. Ask the trial doctor what is safe.Common reasons
Why do people leave a blood cancer trial?
Every one of these is a legitimate reason. None of them needs to be defended.
Side effects feel too hard
Tiredness, infections or other effects can wear a person down. Tell the team early. Sometimes the problem can be eased within the trial, and sometimes leaving is the right answer.
The disease is not responding
If tests show the blood cancer is growing, the trial doctor may advise moving to another treatment. This is one of the most common reasons a trial ends for a person.
Travel and family pressure
Long journeys, lost wages and caring for children or parents at home can become too much over months. That is a real reason, not a weak one.
You simply changed your mind
You may feel differently after a few weeks, or after talking with family. You do not need a medical reason to leave.
The trial takes you off it
Sometimes the decision is not yours. The doctor or sponsor may withdraw you for safety, or the whole trial may close early.
Ask them
- Why this has happened
- What treatment comes next
Not sure whether this applies to you?
Ask an oncologistStep by step
How do you withdraw from a trial safely?
Tell the trial doctor or coordinator
Say that you want to leave. You can do it in person, by phone or in writing. A family member can help you say it. Ask them to note the date in your records.
Ask what is safe to do with your medicines
Do not stop the trial medicine on your own. The doctor will tell you whether it can stop straight away or needs a planned change, and what to do with any unused tablets.
Attend the safety check if you can
Most trials ask for a final visit to check blood counts and any side effects. You may say no, but this visit is mainly for your own safety.
Get a written handover
Ask for a summary of the treatment you received and your latest results. Take it to the haematologist who will look after you next, so nothing is lost between teams.
Before and after
What changes, and what stays the same, when you leave?
While in the trial
After you withdraw
You receive the trial medicine through the study
The trial medicine usually stops, with a plan for what replaces it
The sponsor pays for trial medicines and trial tests
Ongoing care is paid as ordinary treatment, through insurance or a scheme
Visits follow the trial calendar
Visits follow your new treating team's plan
Your right to respectful, standard care
Unchanged. Leaving must not count against you
Care for a trial-related injury
Still applies to harm caused while you were in the trial
Leave a number, we will call you
One field. No form to fill in, and no charge for the call.
Commonly believed
What do families fear about leaving a trial?
"If we leave, the doctors will refuse to treat us."
Your right to standard care does not depend on staying in a trial. Ethics rules protect this. If you ever feel treated differently after leaving, you can raise it with the ethics committee whose number is on your consent form.
"We signed the form, so we will have to repay the costs."
No. Leaving does not make you owe the sponsor for trial medicines or tests already given. What you pay for is treatment outside the trial from then on, as with any other care.
"Once we stop coming, the trial forgets about us."
Information already collected is usually kept, as the consent form explains. You can ask the team not to collect anything new. Ask what happens to stored blood or marrow samples, because you may be able to ask for those to be destroyed.
"Leaving means we have given up."
Leaving a trial is a change of plan, not an end to treatment. Many people move to standard treatment, another trial or supportive care. The decision is about what fits your life and health now.
On your consent form
Which words on the consent form matter when you leave?
- Informed consent
- Your agreement to take part after the trial has been explained. It can be taken back at any time.
- Withdrawal of consent
- Your decision to stop taking part. It may cover treatment only, or treatment and all further follow-up.
- Principal investigator
- The doctor in charge of the trial at that hospital. This is who you tell.
- Ethics committee
- An independent group that approved the trial and protects your rights. Its contact details should be on your form.
- Standard of care
- The usual treatment you would receive outside any trial.
- Safety follow-up
- Checks after the last trial dose, to catch late side effects.
Being straight with you
What happens to your treatment next, and what can this page not tell you?
After you leave, your haematologist plans the next step. That might be standard treatment, a different trial, a period of watching closely, or care focused on comfort. Which one fits depends on the type of blood cancer, how it has responded so far, and how well you are.
What this page cannot tell you
It cannot tell you whether leaving is the right choice for you, what your outlook will be, or what your particular trial allows. Those answers are in your consent form and with your trial doctor. If anything on the form is unclear, ask for it to be explained again, in Telugu or Hindi if that helps.
Getting a second view
If you are unsure, a review by another haematologist can help. CION's haematology team can read your trial summary and reports, discuss your case at a tumour board, and explain the options that remain. The team will not pressure you to stay in a trial or to leave one.
Costs after leaving depend on your treatment and cover. Aarogyasri, CGHS, ECHS, EHS, PM-JAY and cashless insurance may apply; scheme rules change, so check the current position.Questions we are asked
Common questions about withdrawing from a trial
Do I have to give a reason for leaving the trial?
No. You can leave without explaining why. The trial team may ask, because your reason can help them improve the study or spot a safety problem, but you are free not to answer. Your care should not change because you kept your reason to yourself.
Can I stop the trial tablets today and tell the team later?
Please do not. Some blood cancer medicines need a planned stop or a handover to another treatment, and counts may need checking. Call the trial doctor or coordinator first, even by phone, and ask what is safe. They can usually advise the same day.
Will my data and samples still be used after I leave?
Information collected before you left is usually kept and may still be used, as your consent form explains. New information is not collected unless you agree to follow-up. Ask what happens to stored blood or marrow samples, because in some trials you can ask for those to be destroyed.
Can I join the same trial again later?
Usually not. Most trials do not allow a person to re-enter once they have withdrawn, because it affects how results are read. You may still be eligible for a different trial. Ask your haematologist to look before you decide to leave, if that matters to you.
Will I have to pay for the treatment I already received?
No. Trial medicines and trial tests given while you took part are not charged back to you when you leave. From the point you withdraw, your treatment is paid as ordinary care, through insurance, a government scheme or yourself. Ask for an estimate before the new plan starts.
What if I am harmed by the trial after I leave?
Tell the trial team and your own doctor. Under Indian trial rules, care for injury caused by the trial should still be provided even after you leave. The consent form explains how. Keep your trial documents safe so the link between the harm and the trial can be shown.
Can my family withdraw me if I am too unwell to decide?
If a legally acceptable representative signed the consent for you, that person can usually withdraw you. Otherwise the trial doctor will discuss it with your family and act in your interest. Sharing your wishes with the family early makes this far easier for everyone.
Can CION help me decide whether to leave?
CION's haematology team can review your reports and trial summary, explain what the options are, and help plan treatment if you leave. The team cannot see inside a trial it does not run, and the final decision stays with you and your family.
Your Haematologist
Meet CION's haematologist. One specialist for your blood report and your plan.
Dr. Basudev Pokhrel reviews blood counts, transfusion needs and blood disorders, and works with the CION tumour board on blood cancers.
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Sources
- National Cancer Institute — Clinical trials information for patients and caregivers
- Cancer.Net — Clinical trials
- NHS — Clinical trials
- Indian Council of Medical Research — ICMR
This page is general information, not a prescription. Do not change or stop any treatment based on what you read here. If anything is worrying you, contact your own treating team — or call our helpline and we will help you reach the right specialist.
Keep reading
Related pages
Travelling for a Haematology TrialWhen the journeys are the reason you are thinking of leavingCosts Covered and Not Covered in a TrialWhat the sponsor pays for, and what it does notFinding a Blood Cancer Trial in IndiaLook for a different trial that may suit you betterClinical Trials in HaematologyThe full guide to trials for blood cancers
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