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Clinical and Biological factors associated with relapse and length of survival following relapse in UK neuroblastomas

Study ID: 32515
Short Title: Clinical & biological factors associated with relapsed neuroblastoma
Trust Name: UHS
Recruitment Site: Southampton General Hospital
Disease Area: CYP
Phase: N/A
Expected End Date: 30/09/2024
Postcode: SO16 6YD
Contact Name: Amanda Pattie
Contact Email: studysupport1and3.crnwessex@nihr.ac.uk
Active: Yes

All cases of relapsed/refractory neuroblastoma in the UK and Ireland diagnosed in children and young people aged 0-40 years from the year 2000 onwards. For the second aim of work package I of the study we will include all cases of high risk neuroblasoma who are registered on the high risk trial and who have had genetic studies in addition to MYCN undertaken at diagnosis. Based on numbers of patients registered on the current high risk neuroblastoma trial to date from the UK (around 500) and the numbers on which genetic analyses have been performed (around 250) it will be possible to identify at least 100 relapsed and non-relapsed patients (based on 50% relapse rate). Work package II - cases of neuroblastoma where the tumour cell content is > 30% (30 cases) from diagnosis and relapse (partly from a previous study from our group) and the remainder from the neuroblastoma genetic reference centre work undertaken in Dr Nick Bown's laboratory).

N/A

Neuroblastoma is an embryonal childhood tumour derived from cells which go on to form the sympathetic nervous system. It most often develops in the adrenal medulla but can occur anywhere from the neck to the pelvis. It is one of the most difficult childhood cancers to cure with around 40% five-year survival in high risk cases (50% of all cases). Despite advances in neuroblastoma therapy relapse still occurs in 50% of high risk cases and in most high risk cases cure is no longer possible. Knowledge of factors which influence subsequent response and length of survival following relapse in neuroblastoma are important to determine which, if any, treatment at relapse is appropriate in individual cases, and may significantly affect the results obtained when evaluating new therapies for neuroblastoma in Phase I and II clinical trials. Recent studies report an increased frequency of recurrent, genetic abnormalities at relapse including segmental chromosomal abnormalities (SCA) and gene mutations for which a targeted treatment exists. The present study is a retrospective epidemiological and genetic study which aims to determine clinical and genetic factors associated with neuroblastoma relapse and length of survival following relapse. This will be done by linking epidemiological data, clinical and existing genetic data analysed by multiplex ligation PCR dependent amplification (MLPA) or array comparative genomic hybridisation on recurrent chromosomal losses and gains and treatment information. We will also compare existing genetic profiles on patients on the current high risk neuroblastoma trial who have relapsed with those who haven’t to determine whether particular types and number of segmental chromosomal abnormalities are associated with an increased risk of relapse. The study will also investigate whether the median survival time following relapse is associated with the time interval from diagnosis to relapse. The outcomes from this study will be used to inform future Phase I, II and III clinical trials for children with neuroblastoma.

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