SIOPEN High Risk Neuroblastoma Study 2 (HR-2)


Chief Investigator: Dr Claudia Pasqualini

Sponsor: Institut Gustave Roussy, Paris

Funders / Charity: Institut National du Cancer, Solving Kids Cancer, Enfants Cancers Santé

International multicenter, open-label, randomized phase III trial including three sequential randomizations to assess the efficacy of induction and consolidation chemotherapies and radiotherapy for patients with high-risk neuroblastoma.


This study aims to improve the outcome for patients with newly diagnosed high-risk neuroblastoma.

The treatment of high-risk neuroblastoma is complex, and involves a number of phases:

  • Initial “induction” chemotherapy

  • Surgery to remove the primary tumour

  • "Consolidation" with high-dose chemotherapy followed by autologous stem cell rescue (ASCR)

  • Radiotherapy to the site of the primary tumour

  • Maintenance therapy with anti-GD2 immunotherapy and retinoic acid.

The SIOPEN HR-2 study aims to answer several questions:

  • To compare two different induction chemotherapy regimens: Rapid-COJEC and the GPOH.

  • To investigate the impact of giving more intensive consolidation: comparing standard single course of Busulfan-Melphalan (Bu-Mel) with two courses of high dose chemotherapy (Thiotepa followed by Bu-Mel), autologous stem each course being supported by ASCR

  • In patients with a macroscopic residue disease before radiotherapy, to evaluate the benefit of a radiotherapy boost to the residue ( total 36 Gy) in comparison to the standard 21 Gy dose delivered to the site of the primary tumour.

All patients enrolled in the trial must have newly diagnosed High Risk Neuroblastoma

The study opened in France in 2020, and aims to recruit 800 patients over 6 years. Other countries are in set up, with a plan to open in 26 countries, which includes a total of 270 sites: Germany, Austria, Belgium, Denmark, Greece, Ireland, Israel, Italy, The Netherlands, Poland, Spain, Switzerland, United Kingdom, Australia and New Zealand; Croatia; Finland; Hungary; Lithuania; Norway; Portugal; Czech Republic; Slovakia; Slovenia and Sweden. Currently, the study has already recruited 394 patients and is open in 122 sites.

There are no results available from the study yet.

Further details about the trial can be found at clinicaltrials.gov database: https://clinicaltrials.gov/ct2/show/NCT04221035


Patient information videos

Information introduction to HR Neuroblastoma

Information on Induction, Consolidation, and Maintenance treatments

Information on Stem Cell Harvest, Radiotherapy and Surgery.

What happens after treatment for HR Neuroblastoma?

Special thanks to the developers of these videos, the Children’s Cancer and Leukemia Group in partnership with Solving Kids Cancer National Neuroblastoma Nursing Group 2021.

Also, thanks to the UK group that produced the two videos summarizing the HRNBL2 trial.


STATUS OF HR-2 TRIAL: OPEN & RECRUITING

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SIOPEN Low and Intermediate Risk Neuroblastoma European Study (LINES)