What does growth factor support treat?

White-cell growth factors, often given as injections, stimulate the bone marrow to make and release neutrophils. These cells help the body respond to infection. An oncology team may use support after chemotherapy or other treatment when a low neutrophil count is expected, has occurred before, or has led to febrile neutropenia. The aim is to reduce the period of vulnerability and help the planned cancer treatment continue when clinically appropriate.

Growth factor support does not kill tumour cells, cure an infection, or replace antibiotics when an infection is suspected. It may also be considered in selected blood disorders, including some myelodysplastic syndromes, according to the treatment plan.

Follow the prescribed injection timing and storage instructions, and keep blood-test appointments so the team can check your counts. Ask which medicines or symptoms should be reported. Bone or muscle aches can occur as the marrow responds; your team can suggest suitable relief after considering your other medicines and health conditions. Never change the dose or schedule without guidance.

During or after cancer treatment, report a fever or feeling suddenly unwell using the urgent contact route given by your oncology team. Unexplained fever can be the first sign of infection when neutrophils are low. Seek emergency help for breathing difficulty, facial swelling, severe weakness, confusion, or collapse. Severe left upper abdominal or shoulder pain after an injection also needs urgent advice.

Why am I being offered growth factor support? When should each dose be given? Which temperature or symptoms require immediate contact? How will blood counts affect my next treatment? What pain relief is suitable if aches develop?