Chemotherapy for children — protocols, cycles & ports

A chemotherapy protocol (also called a regimen) is a pre-planned schedule of which medicines your child will receive, in what order, at what doses, and on which days. Protocols for childhood cancers are designed from decades of large international clinical trials conducted specifically in children — they are not adapted from adult regimens. Each cancer type in children has its own protocol because different tumour cells respond to different combinations of medicines. Your oncologist will explain which protocol your child is on and what each phase of it involves. Sticking to the protocol schedule as closely as possible gives treatment the best chance of working.

A chemotherapy port (also called a central venous access device or central line) is a small device placed under the skin — usually on the chest — that connects to a large vein. It allows the team to give chemotherapy, draw blood samples, and deliver fluids without repeated needle sticks to the arm. Not every child needs a port, but for children who will have many cycles of chemotherapy, or whose veins are small and difficult to access, a port is usually recommended. Placement is a minor surgical procedure done under general anaesthesia. The port is removed when treatment is complete. Many children find that having a port makes the overall experience of chemotherapy much more manageable.

The number of cycles depends on the type of cancer your child has, the specific protocol being used, how the cancer responds after each cycle, and whether additional treatment such as surgery or radiation is also planned. Some protocols run for a few months; others — particularly those for leukaemia — continue for two to three years in different phases (induction, consolidation, maintenance). Your oncologist will outline the planned number of cycles at the start and will review the plan after key scans to see how the cancer is responding. The schedule can be adjusted if your child needs extra recovery time between cycles.

The gap between cycles — called the recovery period — is deliberately built into the protocol to allow your child's blood counts to recover. Chemotherapy affects the bone marrow, which produces the blood cells your child needs to fight infection, carry oxygen, and clot blood. A blood test (usually a full blood count) is done before each new cycle to check that counts are high enough to start again safely. During this recovery window, many children feel better and can resume some normal activities, including school when their blood counts allow. The team will give you clear guidance on which symptoms to watch for and when to come in between cycles.

This is one of the most important questions parents ask, and the honest answer is: some chemotherapy medicines, particularly when combined with radiation to certain areas, can affect growth, learning, heart function, hearing, kidney health, or fertility in the long term. Modern paediatric protocols are designed to minimise these late effects — for example, by choosing combinations that control the cancer while sparing organs wherever possible, and by avoiding or reducing radiation where evidence supports doing so. After treatment ends, your child will be monitored through a structured long-term follow-up programme to catch any late effects early and manage them. Your oncologist will explain which late effects are relevant for your child's specific regimen.

At CION Cancer Clinics, every child's case is reviewed by a tumour board — a group of medical, surgical, and radiation oncologists who agree on the most appropriate protocol together. Your child's 45-minute consultation gives the oncologist time to explain the protocol, cycles, port options, and what to expect in detail. The team includes a dedicated paediatric oncology nurse, a nutrition counsellor, and access to psycho-oncology support for both your child and your family. Throughout chemotherapy, blood counts are monitored carefully before every cycle and dose adjustments are made if needed. Costs are explained upfront and the team will help you navigate insurance and Aarogyasri where applicable.