Response will be assessed by computed tomography (CT) scan per the Lugano Classification. Computed tomography scan with contrast will occur as required by protocol, until progressive disease (PD), new anti-cancer therapy, withdrawal of consent, death, lost to follow-up, or end of study (EOS), whichever occurs first. Total body magnetic resonance imaging (MRI) is allowed if CT with contrast is contraindicated. Positron emission tomography (PET)/CT may be used in lieu of a CT with contrast only if the CT of the PET/CT has been performed with diagnostic quality and contrast is administered.