Malignancies other than NSCLC within 5 years prior to randomization, with the exception of those with a negligible risk of metastasis or death treated expected curative outcome History of malignancy other than gastric or gastroesophageal junction carcinoma within 2 years prior to screening, with the exception of those with a negligible risk of metastasis or death; Malignancies other than TNBC within 5 years prior to randomization, with the exception of those with a negligible risk of metastasis or death and treated with expected curative outcome (such as adequately treated carcinoma in situ of the cervix, non-melanoma skin carcinoma, or Stage I uterine cancer) Active malignancies within 12 months with the exception of those with a negligible risk of metastasis or death treated with expected curative outcome History of other malignancy within 5 years prior to screening, with the exception of those with a negligible risk of metastasis or death Malignancies other than head and neck cancer within 5 years prior to Day 1 of treatment, with the exception of those with a negligible risk of metastasis or death treated with expected curative outcome Malignancies other than UCa within 3 years prior to Day 0, with the exception of those with negligible risk of metastasis or death treated with expected curative outcome; Concurrent malignancies other than BCC, other than those with negligible risk of metastases or death Malignancies other than disease under study within 5 years prior to Day 1 of Cycle 1 except those with a negligible risk of metastasis or death Active malignancies within 3 years except for those with a negligible risk of metastasis or death treated with expected curative outcome. History of malignancy other than pancreatic carcinoma within 2 years prior to screening, with the exception of those with a negligible risk of metastasis or death History of malignancy other than NSLCL within 5 years prior to screening with the exception of malignancies with negligible risk of metastasis or death Malignancies other than SCLC within 5 years prior to randomization, with the exception of those with a negligible risk of metastasis or death treated with expected curative outcome Malignancies other than NSCLC within 5 years prior to enrollment, except for those curatively treated with negligible risk of metastasis or death Malignancies other than NSCLC within 5 years prior to randomization, with the exception of those with a negligible risk of metastasis or death treated with expected curative outcome Malignancies other than urothelial bladder cancer within 5 years prior to Cycle 1, Day 1, with the exception of those with a negligible risk of metastasis or death treated with expected curative outcome or incidental prostate cancer Malignancies other than NSCLC within 5 years prior to randomization, with the exception of those with negligible risk of metastases or death and treated with expected curative outcome Active malignancies within the past 12 months except negligible risk of metastasis or death treated with expected curative outcome. History of malignancy other than HCC within 5 years prior to screening, with the exception of malignancies with a negligible risk of metastasis or death Active malignancies within 12 months with the exception of those with a negligible risk of metastasis or death Any other malignancies within 5 years except those with negligible risk of metastasis or death Malignancies other than disease under study within 5 years prior to Cycle 1, Day 1, with the exception of those with a negligible risk of metastasis or death Concurrent history of malignancy other than cervical cancer within 3 years of first planned dose of REGN2810, except for tumors with negligible risk of metastasis Active malignancies within 12 months with the exception of those with a negligible risk of metastasis or death treated with expected curative outcome. Malignancies other than NSCLC within 5 years prior to randomization, with the exception of those with a negligible risk of metastasis or death treated with expected curative outcome History of malignancy, including prior SCCHN primary tumors within 5 years prior to screening, with the exception of malignancies with a negligible risk of metastasis or death Malignancies other than triple negative breast cancer (TNBC) within 5 years prior to randomization, with the exception of those with a negligible risk of metastasis or death and treated with expected curative outcome (such as adequately treated carcinoma in situ of the cervix or basal or squamous cell skin cancer) Malignancies within 5 years prior to enrollment, with the exception of those with a negligible risk of metastasis or death and treated with expected curative outcome