Skip to main content
Cancer Explained
Beginner 4 min read Verified

Clinical Trials for Children With Cancer

A plain-language explanation of how clinical trials work for children with cancer and why they have been central to progress in childhood cancer treatment. Based on the National Cancer Institute.

NCI source

Last reviewed: 2026-07-07

The short answer

Clinical trials are research studies that test whether new treatments are safe and work better than current care. Most progress in curing childhood cancers has come through trials, and many children are offered the chance to take part.

  • Clinical trials are research studies that test new treatments for safety and effectiveness.

  • Most progress in curing childhood cancers has come through clinical trials.

  • Trials for children usually compare a potentially better therapy with the current standard.

  • Taking part is voluntary, and families can ask questions before deciding.

Choose how you want to understand this

The full explanation.

The simple version

Clinical trials are research studies that test whether a new treatment is safe and works better than current care. Before any new treatment can be widely used, it must be studied in trials. For children, trials have been central to progress.

Why trials matter for children

Most of the progress in finding curative treatments for childhood cancers has been made through clinical trials. Trials for children and teens are generally designed to compare a potentially better therapy with the therapy that is currently accepted as standard.

Most progress against childhood cancer has come through clinical trials.

Taking part is a choice

Joining a trial is voluntary. Families can ask questions, take time to decide, and change their mind later. A child who does not join a trial still receives standard care. Ask about possible benefits, risks, and any extra visits or tests.

Learning about options

Your child's care team can discuss whether a trial is a good fit. NCI's Cancer Information Service at 1-800-4-CANCER can also help families learn about ongoing clinical trials for children with cancer.

Words to know

Tap any term to see what it means.

Browse the full glossary →

Common questions

What is a clinical trial?

A clinical trial is a research study in which a new treatment is tested to find out whether it is safe and works. New treatments must be studied this way before they can be widely used.

Why are trials important for children?

Most of the progress in identifying curative therapies for childhood cancers has been made through clinical trials. Many children treated at specialized centers are offered the chance to take part.

What do childhood cancer trials compare?

Trials for children and teens are generally designed to compare a potentially better therapy with the therapy that is currently accepted as standard.

Is joining a trial required?

No. Taking part is voluntary. Families can ask questions, take time to decide, and change their mind, and a child can still receive standard care if they do not join.

How can we learn about trials?

Your child's care team can discuss trial options, and NCI's Cancer Information Service (1-800-4-CANCER) can help identify ongoing clinical trials for children with cancer.

Questions to ask your doctor

Being prepared helps you get the most out of your appointments. Save or print these questions.

Open my question list

Tap a question to save it to your list (kept on this device).

Quick quiz

Test your knowledge

0 of 4 answered

  1. Q1.What is a clinical trial?
  2. Q2.Why have trials been important in childhood cancer?
  3. Q3.What do childhood cancer trials usually compare?
  4. Q4.Is joining a clinical trial required?

This quiz checks understanding of educational content only. It is not medical advice. Open this quiz on its own page.

Related learning map

How this explanation connects to 10 other things you can explore — related topics, terms, questions, practice, and its NCI source.

Clinical Trials for Children With Cancer