Treatment Outcomes Among Osteosarcoma Patients Treated in Clinical Trial of Palliative Radiotherapy and Intra-tumoral Autologous NK Cells

PatientAge (years)Total NK Cells Injected (× 106)ToxicityStatusSurvival Time (months)Cause of Deatha6-Month Metastasis-Free Survivalb
114.830.3Dead2.4MetastasesNo
29.125.34Infection at injection siteAlive8.1n/aYes
39.1547Alive11.2n/aYesc
45.8254.33Alive6.0n/aYes
51.2102.63Grade 3 fever/chills/dehydration attributed to rhIL-2 reaction; Infection at injection site requiring surgeryDead8.1MetastasesYes
66.3216.4Infection at injection site requiring surgeryDead4.1Perforated ulcerNo
77.5234Dead2.9Pathologic fracture/ metastasesNo
85.0305Dead1.6Pathologic fractureNo
98.9355Alive7.6n/aYes
1010.2132Dead5.0MetastasesNo

aAnimals were euthanized at owner’s request following diagnosis of index event

bFreedom from pulmonary metastasis 6 months after enrollment was the primary endpoint of the clinical trial

cPatient demonstrated resolution of suspicious pulmonary nodule post-radioimmunotherapy