{"denomUnitsSelected":"Participants","description":"A multivariate Cox proportional hazards regression model will test to see if the dinutuximab serum level, HACA titer, effector cell function, or serum marker for effector cell activation are associated with EFS or OS.","reportingStatus":"NOT_POSTED","timeFrame":"Baseline to up to 10 years","title":"Change in Tumor Biology","type":"OTHER_PRE_SPECIFIED"}