John Nick Nikitas, MD

Nikitas J, Jamshidian P, Tree AC, Hall E, Dearnaley D, Michalski JM, Lee WR, Nguyen PL, Sandler HM, Catton CN, Lukka HR, Supiot S, Crehange G, Latorzeff I, Roy S, Malone S, Horwitz E, Wong JK, Arcangeli S, Sanguineti G, Romero T, Sun Y, Steinberg ML, Valle LF, Neylon J, Weidhaas JB, Spratt DE, Telesca D, Kishan AU Correlation of Biochemical Recurrence With Adverse Late Toxic Events Following Prostate Radiation Therapy (COBALT Study): An Individual Patient Data Meta-Analysis of 7 Randomized Trials , Int J Radiat Oncol Biol Phys, 125(4): 2026,1140-1148

Nikitas J, Holzgreve A, Juarez J, Kimura K, Lira S, Alam H, Contreras M, Theus L, Nguyen AT, Ells Z, Zhu S, Grogan T, Elashoff DA, Unterrainer LM, Dahlbom M, Allen-Auerbach M, Czernin J, Calais J Phase 2 Prospective Trial of Retreatment with [177Lu]Lu-PSMA-617 Molecular Radiotherapy for Metastatic Castration-Resistant Prostate Cancer-RE-LuPSMA , J Nucl Med, 67(5): 2026,674-680

Nikitas J, Vapiwala N Redefining Salvage Therapy for Localized Radiorecurrent Prostate Cancer-In More Ways Than One , JAMA Oncol, 12(4): 2026,373-374

Nikitas J, Smith CP, Armstrong WR, Murthy V, Grogan T, Clark K, Moore J, Roberts M, Farolfi A, Reiter RE, Rettig MB, Shen J, Valle LF, Nickols NG, Steinberg ML, Czernin J, Kishan AU, Calais J Five-Year Outcomes After Prostate-Specific Membrane Antigen PET/CT-Guided Salvage Radiotherapy Following Radical Prostatectomy , J Natl Compr Canc Netw, 24(2): 2026,11-18

Kishan AU, Juarez Casillas JE, Sargos P, Kalbasi TR, Chabaud S, Brihoum M, Sachdeva A, Nikitas JN, Ma TM, Karasik D, Ballas LK, Lock D, Valle L, Taparra K, Reiter RE, Saigal C, Chamie K, Donin N, Chin AI, Rettig M, Nickols NG, Sun Y, Spratt D, Lamb JM, Cao M, Pommier P, Steinberg ML Stereotactic Intensity-modulated Radiotherapy After Radical Prostatectomy (SCIMITAR): 4-Year Outcomes of a Phase 2 Clinical Trial , Eur Urol, 89(1): 2026,12-17

Holzgreve A, Delker A, Ells Z, Brosch-Lenz J, Unterrainer LM, Nikitas J, Zhu S, Contreras MM, Alam H, Nabong RM, Lira S, Vasilyev A, Chen L, Grogan T, Elashoff D, Meyer CA, Dahlbom M, Czernin J, Calais J Randomized Phase 2 Trial of an Extended and Flexible Dosing Schedule of 177Lu-PSMA Molecular Radiotherapy in Patients with Metastatic Castration-Resistant Prostate Cancer (FLEX-MRT): Study Protocol , J Nucl Med, 66(10): 2025

Juarez Casillas JE, Nikitas J, Rettig MB, Reiter RE, Lee A, Steinberg ML, Valle L, Kalbasi TR, Calais J, Czernin J, Eala MA, Tsai S, Kane N, Solanki AA, Sexton R, Duriseti S, Berenji GR, Aronson WJ, Garraway IP, Chang MG, Kwon R, Lee SP, Nickols NG, Kishan AU Pooled Analysis of the SOLAR and SATURN Clinical Trials Comparing Progression of Synchronous Versus Metachronous Prostate-specific Membrane Antigen-defined Oligometastatic Prostate Cancer Following Systemic and Tumor-directed Therapy , Eur Urol Oncol, 8(4): 2025,893-898

Nikitas J, Ballas LK, Romero T, Lynch C, Ma TM, Valle LF, Sachdeva A, Chong N, Basehart V, Franco A, Reiter R, Saigal C, Chamie K, Litwin MS, Donin NM, Rettig M, Nickols NG, Cao M, Liauw SL, Steinberg ML, Kishan AU Patient-Reported Outcomes With Stereotactic Intensity Modulated Radiotherapy After Radical Prostatectomy: A Nonrandomized Clinical Trial , JAMA Oncol, 11(7): 2025,726-734

Nikitas J, Jamshidian P, Tree AC, Hall E, Dearnaley D, Michalski JM, Lee WR, Nguyen PL, Sandler HM, Catton CN, Lukka HR, Incrocci L, Heemsbergen W, Pos FJ, Roy S, Malone S, Horwitz E, Wong JK, Arcangeli S, Sanguineti G, Romero T, Sun Y, Steinberg ML, Valle LF, Weidhaas JB, Spratt D, Telesca D, Kishan AU The interplay between acute and late toxicity among patients receiving prostate radiotherapy: an individual patient data meta-analysis of six randomised trials , Lancet Oncol, 26(3): 2025,378-386

Ong WL, Romero T, Roy S, Nikitas J, Joseph D, Zapatero A, Malone S, Morgan SC, Steinberg ML, Valle LF, Zaorsky NG, Martin Ma T, Rettig MB, Nickols N, Jiang T, Reiter RE, Eleswarapu SV, Maldonado X, Sun Y, Nguyen PL, Millar JL, Martin JM, Spratt DE, Kishan AU; MARCAP Consortium Investigators Testosterone Recovery Following Androgen Suppression and Prostate Radiotherapy (TRANSPORT): A Pooled Analysis of Five Randomized Trials from the Meta-Analysis of Randomized Trials in Cancer of the Prostate (MARCAP) Consortium , Eur Urol, 87(1): 2025,49-57