Cluster 16: anticipated expectancy life months greater weeks time lymphodepletion ecog screening Cluster 226: expectancy life greater months equal physician morbid assessed treating determined Cluster 1114: estimated expectancy life months greater investigator patients entry treating physician Cluster 1208: expectancy life investigator opinion months weeks determined greater judgment assessed Cluster 1396: tolerate inability opinion treating procedures investigator imaging physician predispose rapidly Cluster 1641: medically fit undergo stable patients physician determined inoperable unstable receive Cluster 2472: physician treating determined opinion discretion patients deemed medical judged treatment