Health condition
Severe congenital neutropenia adults
Severe congenital neutropenia is a genetic failure of neutrophil production, now survivable into adulthood thanks to G-CSF; adults live with infection risk, dental disease and a real long-term risk of leukaemic transformation that structured surveillance addresses.
Why trust this guide
- 01
Editorial team
Written by our editorial team from the UK sources listed on each page.
- 02
Sourced from guidance
Checked against current NHS and UK specialist society guidance at the time of review.
- 03
Current for 2026
Reviewed on 2026-09-27 with the next review scheduled for 2027-09-27.
Key facts
The essentials at a glance.
The symptoms to recognise, when to seek help, which specialist to see, and what treatment usually involves.
-
Lifelong severe neutropenia from birth, most often due to ELANE or HAX1 mutations
-
Long-term G-CSF keeps most patients largely infection-free
-
Annual marrow surveillance monitors for MDS or leukaemia, especially in high-dose G-CSF users
-
Transplant is considered for transformation or inadequate G-CSF response
Understanding the condition
What it is and what happens next.
What causes it, how it is diagnosed, and the treatment routes available in the UK.
What it is and how it feels
Before growth factor therapy, this diagnosis rarely permitted adult life; today, clinics follow a growing cohort of adults whose neutrophil counts are maintained by daily or intermittent G-CSF injections. The residue of childhood - scarred gums, dental loss, past deep infections - varies, but the ongoing rhythm is stable: prompt antibiotics for fevers, dental care as genuine preventive medicine, and vigilance rather than fear.
Diagnosis and treatment routes
The adult-specific issue is clonal evolution: a subset of patients acquire mutations that progress toward myelodysplasia or acute leukaemia, with risk concentrated in those needing the highest G-CSF doses. Annual marrow examination with genetic monitoring exists precisely to catch this early, when transplant - the definitive answer - works best. Pregnancy is achievable with continued G-CSF under specialist supervision. In many parts of the UK, routine NHS referrals for this kind of problem can take months, whereas an initial appointment with a private consultant is typically available within around two weeks.
Seeing a specialist
Who to see, and how quickly you can be seen.
The specialist for this condition is usually a consultant haematologist. Your GP can refer you on the NHS, or you can arrange a private consultation directly.
A quiet reminder
This guide is for information, not medical advice.
Your GP knows your history and can tell you which parts apply to you. If in doubt, see them - and seek urgent care for any of the emergency symptoms described above.
Frequently asked
Common questions about Severe congenital neutropenia adults.
Quick, plain-English answers to what people ask us most.
-
What is severe congenital neutropenia?
Severe congenital neutropenia is a genetic failure of neutrophil (infection-fighting white cell) production, now survivable into adulthood thanks to G-CSF treatment, allowing adults with the condition to live with manageable infection risk.
-
What causes severe congenital neutropenia?
It results from genetic mutations affecting the bone marrow's ability to produce mature neutrophils, present from birth, though various different specific genetic causes have been identified.
-
How do adults with severe congenital neutropenia manage infection risk?
Regular G-CSF (a medication that stimulates neutrophil production) treatment, prompt attention to any signs of infection, and close monitoring form the core of ongoing management into adulthood.
-
Are there long-term risks for adults with severe congenital neutropenia?
Yes, there is an increased long-term risk of developing myelodysplasia or leukaemia, which is why regular specialist monitoring including bone marrow assessment continues throughout life.
-
How is severe congenital neutropenia treated?
Treatment is with regular G-CSF injections to boost neutrophil production, with dosing adjusted based on response, alongside prompt antibiotic treatment for any infections.
-
When should I see a specialist about severe congenital neutropenia?
Ongoing specialist haematology follow-up is essential for anyone with this condition. A private consultant haematologist can typically be seen within about two weeks if a review is needed.