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Impact of neurofibromatosis type 1 with plexiform neurofibromas on the health-related quality of life and work productivity of adult patients and caregivers in the UK: a cross-sectional survey

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Hyun Kyoo Yoo, Alex Porteous, Alvin Wei Tian Ng, Keval Haria, Annabel Griffiths, Andrew J. Lloyd, Xiaoqin Yang, Gbenga Kazeem, Volkan Barut

A condition affecting nerves can reshape daily life for both the person who has it and the family member who helps care for them. This survey found the burden reaches far beyond the tumour itself.

Abstract

Background Plexiform neurofibromas (PN) are complex, benign nerve-sheath tumours that occur in 30–50% of patients with neurofibromatosis type 1 (NF1), a rare, genetic disorder. PN are associated with substantial, heterogeneous morbidities that impact health-related quality of life (HRQoL), including affecting motor function and causing pain, though HRQoL and work productivity data are scarce. This UK cross-sectional study explored HRQoL and work productivity in adult patients with NF1 PN and caregivers of paediatric patients. Methods Adult patients and caregivers of paediatric patients self-enrolled in an online survey (March–April 2021). Outcomes included EQ-5D-5L, PROMIS® GH and INF1-QOL (adult patients only), and EQ-5D-5L, CarerQol and WPAI (caregivers only). Utilities were estimated from EQ-5D-5L responses using the UK crosswalk value set. Linear regression models explored univariable associations between adult patient characteristics and HRQoL. Results Mean (± standard deviation) EQ-5D utility in adult patients with NF1 PN was 0.65 (± 0.29; n = 35; age-/sexmatched norm: 0.89 [± 0.04]). Moderate–extreme pain/discomfort and anxiety/depression were reported by 14/35 (40.0%) and 18/35 (51.4%) patients, respectively. Mean PROMIS® GH physical and mental health scores were 43.6 (± 9.19) and 41.7 (± 11.5; n = 35; matched norm: 50.0 [± 10.0]). Mean INF1-QOL score was 11.03 (± 6.02; n = 33). Chronic itching, at least one symptom, at least one comorbidity, PN location at extremities (arms/legs) and pain were associated with worse HRQoL scores. Mean caregiver EQ-5D utility was 0.72 (± 0.24; n = 8; age-/sex-matched norm: 0.88 [± 0.03]). Moderate pain/discomfort and moderate–severe anxiety/depression were reported by 4/8 (50.0%) and 2/8 (25.0%) caregivers, respectively. Mean CarerQol score was 69.3 (± 13.9; n = 8). Mean WPAI regular activity productivity loss was 36.3% (± 31.6%; n = 8). Conclusions NF1 PN worsens adult patient and caregiver HRQoL compared to the general population, notably affecting pain and discomfort, anxiety and depression and caregiver productivity.

Transcript

A condition affecting nerves can reshape daily life for both the person who has it and the family member who helps care for them. This survey found the burden reaches far beyond the tumour itself. Neurofibromatosis type one is a progressive genetic disorder. A common feature is plexiform neurofibromas, benign but often growing tumours arising from nerves that can occur anywhere on the body.

Their effects depend on size, location and how deeply they grow. They can cause pain, changes in appearance and movement problems, and sometimes dangerous blockage of the airway. The study set out to measure how these nerve growths affect patients’ health and quality of life, and how caring for children with them affects caregivers’ ability to work.

It also examined how patient characteristics were related to quality of life. To make the burden visible, the study used two anonymous surveys: one for adults with these nerve growths and one for caregivers of children with them.

This was a snapshot taken during March and April of twenty twenty-one, so it describes people’s experiences at that time rather than following changes over years. For adults with these nerve growths, the average health score was substantially worse than the score for people of the same age and sex in the general population.

Pain or discomfort reached moderate to extreme levels for many patients, and anxiety or depression was also commonly reported. The burden also reached caregivers. Their average health score was substantially worse than that of the matched general population, and half reported moderate pain or discomfort.

Half also reported problems ranging from slight to severe anxiety or depression. Caregiving affected work as well. Almost a quarter of worktime was missed because of caregiving, while productivity during work was impaired by forty percent.

Across work and daily activities, caregiving was linked with substantial productivity loss. The findings need careful interpretation because the number of participants was low, especially in the caregiver survey, creating uncertainty around the estimates.

Because this was an exploratory snapshot, it could not establish that the nerve growths caused every reported problem. Taken together, patients experienced pain and other health problems affecting both mental and physical health, while caregivers also reported substantial productivity loss from caring.

Both groups had worse health than the general population, especially around pain, discomfort, anxiety and depression. The practical message is a need for better management that reduces the burden on patients and caregivers. The study found worse health and daily functioning for adults with these growths, and a serious spillover into caregivers’ lives and productivity.

That makes support for both people part of care.

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