Abstract
Background
Validation of the prognostic value of the SIOPEN mIBG skeletal scoring system in two independent stage 4, mIBG avid, high-risk neuroblastoma populations.
Results
The semi-quantitative SIOPEN score evaluates skeletal meta-iodobenzylguanidine (mIBG) uptake on a 0–6 scale in 12 anatomical regions. Evaluable mIBG scans from 216 COG-A3973 and 341 SIOPEN/HR-NBL1 trial patients were reviewed pre- and post-induction chemotherapy. The prognostic value of skeletal scores for 5-year event free survival (5 yr.-EFS) was tested in the source and validation cohorts. At diagnosis, both cohorts showed a gradual non-linear increase in risk with cumulative scores. Several approaches were explored to test the relationship between score and EFS. Ultimately, a cutoff score of ≤3 was the most useful predictor across trials. A SIOPEN score ≤ 3 pre-induction was found in 15% SIOPEN patients and in 22% of COG patients and increased post-induction to 60% in SIOPEN patients and to 73% in COG patients. Baseline 5 yr.-EFS rates in the SIOPEN/HR-NBL1 cohort for scores ≤3 were 47% ± 7% versus 26% ± 3% for higher scores at diagnosis (p < 0.007) and 36% ± 4% versus 14% ± 4% (p < 0.001) for scores obtained post-induction. The COG-A3973 showed 5 yr.-EFS rates for scores ≤3 of 51% ± 7% versus 34% ± 4% for higher scores (p < 0.001) at diagnosis and 43% ± 5% versus 16% ± 6% (p = 0.004) for post-induction scores. Hazard ratios (HR) significantly favoured patients with scores ≤3 after adjustment for age and MYCN-amplification. Optimal outcomes were recorded in patients who achieved complete skeletal response.
Conclusions
Validation in two independent cohorts confirms the prognostic value of the SIOPEN skeletal score. In particular, patients with an absolute SIOPEN score > 3 after induction have very poor outcomes and should be considered for alternative therapeutic strategies.
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Abbreviations
- ASCT:
-
Autologous stem cell transplantation
- AUC:
-
Area under the curve
- CADO:
-
Cyclophosphamide, Adriamycin, Vincristine
- CBDCA:
-
Carboplatin
- CDDP:
-
Cisplatin
- CEM:
-
Carboplatin-Etoposide-Melphalan
- CI:
-
Confidence interval
- COG:
-
Children’s Oncology Group
- COJEC:
-
Rapid, platinum-containing induction schedule (CBDCA, CDDP, CYC, VCR, VP16)
- CR/PR:
-
Complete remission/partial remission
- CT:
-
Computed tomography
- CYC:
-
Cyclophosphamide
- DNA:
-
Deoxyribuncleic acid
- EFS:
-
Event free survival
- HDT:
-
High dose chemotherapy
- HR:
-
Hazard ratios
- HR-NBL:
-
High Risk Neuroblastoma
- INRG:
-
International Neuroblastoma Risk Group
- mIBG:
-
Metaiodobenzylguanidine
- MYCN:
-
Proto-oncogene
- PH:
-
Proportional hazard
- ROC:
-
Receiver operating characteristic
- SIOPEN:
-
Société International d’Oncologie Pédiatrique European Neuroblastoma
- SPECT:
-
Single-photon emission computed tomography
- TVD:
-
Topotecan, Vincristine, Doxorubicin
- VCR:
-
Vincristine
- VP16:
-
Etoposide
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Acknowledgements
We thank Marek Nykiel, Ingrid Pribill, PhD and Claudia Zeiner-Koglin, MSc at the Children’s Cancer Research Institute (CCRI) for their support.
Funding
This study was funded by the European Commission Community Research, Fifth Framework Program, Quality of Life and Management of living Resources: EC Grant No. QLRI-CT-2002-01768 (11. 2002–10. 2005) [https://www.siopen-r-net.org]; by the National Cancer Institute Paediatric and Adolescent Solid Tumour Steering Committee and received the following travel funding: Alex’s Lemonade Stand Foundation, Ben Towne Foundation, Children’s Neuroblastoma Cancer Foundation.
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Authors and Affiliations
Contributions
Ruth Ladenstein and Bieke Lambert share first authorship.
Conception and design.
Ruth Ladenstein, Ulrike Pötschger, Valerie Lewington, Gregory Yanik, Katherine K. Matthay, Julie Park, Susan G. Kreissman, Ariane Boubaker.
Provision of study material or patients.
Ruth Ladenstein, Bieke Lambert, Valerie Lewington, Zvi Bar-Sever, Aurore Oudoux, Anna Śliwińska, Katerina Taborska, Lorenzo Biassoni, Gregory Yanik, Arlene Naranjo, Marguerite T. Parisi, Barry L. Shulkin, Helene Nadel, Michael J. Gelfand, Julie Park, Susan G. Kreissman, Dominique Valteau-Couanet, Ariane Boubaker.
Collection and assembly of data.
Ruth Ladenstein, Bieke Lambert, Maria-Rita Castellani, Zvi Bar-Sever, Aurore Oudoux, Anna Śliwińska, Katerina Taborska, Lorenzo Biassoni, Gregory Yanik, Arlene Naranjo, Marguerite T. Parisi, Barry L. Shulkin, Helene Nadel, Michael J. Gelfand, Julie Park, Susan G. Kreissman, Dominique Valteau-Couanet, Ariane Boubaker.
Data analysis and interpretation.
Ruth Ladenstein, Bieke Lambert, Ulrike Pötschger, Maria-Rita Castellani.
mIBG reviewers.
Bieke Lambert, Maria-Rita Castellani, Zvi Bar-Sever, Aurore Oudoux, Anna Śliwińska, Katerina Taborska, Lorenzo Biassoni, Ariane Boubaker.
Manuscript writing.
Ruth Ladenstein, Bieke Lambert, Ulrike Pötschger, Gregory Yanik, Ariane Boubaker.
Final approval of manuscript.
Ruth Ladenstein, Bieke Lambert, Ulrike Pötschger, Valerie Lewington, Maria-Rita Castellani, Zvi Bar-Sever, Aurore Oudoux, Anna Śliwińska, Katerina Taborska, Lorenzo Biassoni, Gregory Yanik, Arlene Naranjo, Marguerite T. Parisi, Barry L. Shulkin, Helene Nadel, Michael J. Gelfand, Katherine K. Matthay, Julie Park,
Susan G. Kreissman, Dominique Valteau-Couanet, Ariane Boubaker.
Corresponding author
Ethics declarations
Disclosure of potential conflict of interest
All authors declare that they have no conflict of interest.
Ethical approval
All procedures performed in the analysis of the studies HR-NBL1/SIOPEN and COG-A3973 involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
Informed consent
Informed consent was obtained from all individual participants included in the study.
Additional information
Part of data previously presented:
ASCO Annual Meeting 2014, Chicago, USA, May 30–June 3; J Clin Oncol 32:5 s, 2014 (suppl; abstr 10,029); EANM Annual Meeting Congress 2014, Oct 20–23, Gothenburg, Sweden
Ruth Ladenstein and Bieke Lambert share first authorship
Annex
Annex
Annex 1: Consort Diagram
Annex 2
-
a)
Comparison of event-free survival (EFS) of patients on the SIOPEN trial and in the analysis mIBG review data set.
-
b)
Comparison of event-free survival (EFS) of patients on the COG A3973 trial and in the analysis mIBG review data set.
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Ladenstein, R., Lambert, B., Pötschger, U. et al. Validation of the mIBG skeletal SIOPEN scoring method in two independent high-risk neuroblastoma populations: the SIOPEN/HR-NBL1 and COG-A3973 trials. Eur J Nucl Med Mol Imaging 45, 292–305 (2018). https://doi.org/10.1007/s00259-017-3829-7
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DOI: https://doi.org/10.1007/s00259-017-3829-7