Prognostic value of International Neuroblastoma Pathology Classification in localized resectable peripheral neuroblastic tumors: a histopathologic study of localized neuroblastoma European Study Group 94.01 Trial and Protocol.
OBJECTIVE
To assess the prognostic value of clinical, biologic, and morphologic data in peripheral neuroblastic tumors, International Neuroblastoma Staging System (INSS) stages 2A and 2B MYCN nonamplified, a multinational protocol entitled Localized Neuroblastoma European Study Group trial 94.01, with a trial of surgery as the only treatment, was initiated in 1995. We present the prognostic value of the revised International Neuroblastoma Pathology Classification (INPC) applied to the patients included in this protocol until its closure in 1999.


METHODS
A total of 120 neuroblastic tumors from trial patients were reviewed by the European International Society of Pediatric Oncology neuroblastoma pathology panel and assigned to a favorable or unfavorable prognostic category according to the INPC guidelines. Overall survival and relapse-free survival (RFS) were estimated by the Kaplan-Meier method and compared by the log-rank test.


RESULTS
A total of 115 of 120 patients were assessable and were assigned to the favorable (90 patients; 78.3%) or unfavorable (25 patients; 21.7%) category. The 60-month survival rate was 97.7% in favorable patients compared with 73.8% in unfavorable patients (P = .0002). RFS analysis showed a 60-month relapse rate of 13.4% and 32% in favorable and unfavorable patients (P < .025), respectively. Statistical analysis demonstrated a significant association of unfavorable INPC category and high lactate dehydrogenase level (P < .045).


CONCLUSIONS
This European study shows for the first time that the INPC prognostic categorization has a significant impact on outcome prediction in INSS stage 2 localized peripheral neuroblastic tumors.
Navarro
Samuel
S
Departamento de Patologia, Universidad de Valencia, Spain. samuel.navarro@uv.es
Amann
Gabriele
G
Beiske
Klaus
K
Cullinane
Catherine J
CJ
d'Amore
Emanuele S G
ES
Gambini
Claudio
C
Mosseri
Véronique
V
De Bernardi
Bruno
B
Michon
Jean
J
Peuchmaur
Michel
M
D018572:Disease-Free Survival; D005060:Europe; D018305:Ganglioneuroblastoma / Q000473:pathology; D006801:Humans; D007770:L-Lactate Dehydrogenase / Q000097:blood; D009447:Neuroblastoma / Q000145:classification* / Q000201:enzymology / Q000473:pathology* / Q000601:surgery / Q000628:therapy; D011237:Predictive Value of Tests; D011379:Prognosis; D016019:Survival Analysis; D016896:Treatment Outcome
D007770:L-Lactate Dehydrogenase