ALK and anaplastic large cell lymphoma: There is a correlation between stages of the disease, presence of the minimal disseminated disease, anti-ALK antibody titers, and risk of relapse with concentrations of cytokines including IL-6, interferon-γ (IFN-γ), IFN-γ induced protein as well as sIL-2R among ALK+ ALCL pediatric patients (114).