Questions About Cancer? 1-800-4-CANCER
  • Print
  • email
  • Facebook
  • Twitter
  • Google+
  • Pinterest

Table 9. Children’s Oncology Group (COG) Neuroblastoma Stage 4S Group Assignment Schema Used for COG-P9641, COG-A3961, and COG-A3973 Studiesa

INSS Stage  Age  MYCN Status  INPC Classification  DNA Ploidyb Risk Group 
4Sc<365 dNonamplifiedFavorable>1Low
<365 dNonamplifiedAny=1Intermediate
<365 dNonamplifiedUnfavorableAnyIntermediate
<365 dAmplifiedAnyAnyHigh

INPC = International Neuroblastoma Pathologic Classification; INSS = International Neuroblastoma Staging System.
aThe COG-P9641, COG-A3961, and COG-A3973 trials established the current standard of care for neuroblastoma patients in terms of risk group assignment and treatment strategies.
bDNA Ploidy: DNA Index (DI) > 1 is favorable, = 1 is unfavorable; hypodiploid tumors (with DI < 1) will be treated as a tumor with a DI > 1 (DI < 1 [hypodiploid] to be considered favorable ploidy).
cINSS stage 4S infants with favorable biology and clinical symptoms are treated with immediate chemotherapy until asymptomatic or according to protocol guidelines. Clinical symptoms include the following: respiratory distress with or without hepatomegaly or cord compression and neurologic deficit or inferior vena cava compression and renal ischemia; or genitourinary obstruction; or gastrointestinal obstruction and vomiting; or coagulopathy with significant clinical hemorrhage unresponsive to replacement therapy.