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Junco JA, Rodríguez R, Fuentes F, Baladrón I, Castro MD, Calzada L, Valenzuela C, Bover E, Pimentel E, Basulto R, Arteaga N, Cid-Arregui A, Sariol F, González L, Porres-Fong L, Medina M, Rodríguez A, Garay AH, Reyes O, López M, de Quesada L, Alvarez A, Martínez C, Marrero M, Molero G, Guerra A, Rosales P, Capote C, Acosta S, Vela I, Arzuaga L, Campal A, Ruiz E, Rubio E, Cedeño P, Sánchez MC, Cardoso P, Morán R, Fernández Y, Campos M, Touduri H, Bacardi D, Feria I, Ramirez A, Cosme K, Saura PL, Quintana M, Muzio V, Bringas R, Ayala M, Mendoza M, Fernández LE, Carr A, Herrera L, Guillén G. Safety and Therapeutic Profile of a GnRH-Based Vaccine Candidate Directed to Prostate Cancer. A 10-Year Follow-Up of Patients Vaccinated With Heberprovac. Front Oncol 2019; 9:49. [PMID: 30859088 PMCID: PMC6397853 DOI: 10.3389/fonc.2019.00049] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2018] [Accepted: 01/17/2019] [Indexed: 12/25/2022] Open
Abstract
Heberprovac is a GnRH based vaccine candidate containing 2.4 mg of the GnRHm1-TT peptide as the main active principle; 245 μg of the very small size proteoliposomes adjuvant (VSSP); and 350 μL of Montanide ISA 51 VG oil adjuvant. The aim of this study was to assess the safety and tolerance of the Heberprovac in advanced prostate cancer patients as well as its capacity to induce anti-GnRH antibodies, the subsequent effects on serum levels of testosterone and PSA and the patient overall survival. The study included eight patients with histologically-proven advanced prostate cancer with indication for hormonal therapy, who received seven intramuscular immunizations with Heberprovac within 18 weeks. Anti-GnRH antibody titers, testosterone and PSA levels, as well as clinical parameters were recorded and evaluated. The vaccine was well tolerated. Significant reductions in serum levels of testosterone and PSA were seen after four immunizations. Castrate levels of testosterone were observed in all patients at the end of the immunization schedule, which remained at the lowest level for at least 20 months. In a 10-year follow-up three out of six patients who completed the entire trial survived. In contrast only one out eight patients survived in the same period in a matched randomly selected group receiving standard anti-hormonal treatment. Heberprovac vaccination showed a good security profile, as well as immunological, biochemical and, most importantly, clinical benefit. The vaccinated group displayed survival advantage compared with the reference group that received standard treatment. These results warrant further clinical trials with Heberprovac involving a larger cohort.
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Affiliation(s)
- Jesús A. Junco
- Center for Genetic Engineering and Biotechnology of Camaguey, Camagüey, Cuba
| | - Ranfis Rodríguez
- Uro-oncology Department of National Institute of Oncology and Radiobiology (INOR), Havana, Cuba
| | - Franklin Fuentes
- Center for Genetic Engineering and Biotechnology of Camaguey, Camagüey, Cuba
| | - Idania Baladrón
- Center for Genetic Engineering and Biotechnology, Havana, Cuba
| | - Maria D. Castro
- Center for Genetic Engineering and Biotechnology of Camaguey, Camagüey, Cuba
| | - Lesvia Calzada
- Center for Genetic Engineering and Biotechnology of Camaguey, Camagüey, Cuba
| | | | - Eddy Bover
- Center for Genetic Engineering and Biotechnology of Camaguey, Camagüey, Cuba
| | | | - Roberto Basulto
- Center for Genetic Engineering and Biotechnology of Camaguey, Camagüey, Cuba
| | - Niurka Arteaga
- Center for Genetic Engineering and Biotechnology of Camaguey, Camagüey, Cuba
| | | | | | | | | | - María Medina
- Oncologic Hospital of Camaguey, Marie Curie, Camagüey, Cuba
| | - Ayni Rodríguez
- Department of Pharmacology of Camaguey Medical University, Camagüey, Cuba
| | - A. Hilda Garay
- Center for Genetic Engineering and Biotechnology, Havana, Cuba
| | - Osvaldo Reyes
- Center for Genetic Engineering and Biotechnology, Havana, Cuba
| | - Matilde López
- Center for Genetic Engineering and Biotechnology, Havana, Cuba
| | | | | | | | | | | | - Alfredo Guerra
- Department of Pharmacology of Camaguey Medical University, Camagüey, Cuba
| | - Pedro Rosales
- Oncologic Hospital of Camaguey, Marie Curie, Camagüey, Cuba
| | - Carlos Capote
- Amalia Simoni Clinical-Surgical Hospital, Camagüey, Cuba
| | - Sahily Acosta
- Oncologic Hospital of Camaguey, Marie Curie, Camagüey, Cuba
| | - Idania Vela
- Oncologic Hospital of Camaguey, Marie Curie, Camagüey, Cuba
| | - Lina Arzuaga
- Oncologic Hospital of Camaguey, Marie Curie, Camagüey, Cuba
| | - Ana Campal
- Center for Genetic Engineering and Biotechnology of Camaguey, Camagüey, Cuba
| | - Erlán Ruiz
- Oncologic Hospital of Camaguey, Marie Curie, Camagüey, Cuba
| | - Elier Rubio
- Oncologic Hospital of Camaguey, Marie Curie, Camagüey, Cuba
| | - Pável Cedeño
- Oncologic Hospital of Camaguey, Marie Curie, Camagüey, Cuba
| | - María Carmen Sánchez
- Clinical Laboratory of the Oncologic Hospital of Camaguey, Marie Curie, Camagüey, Cuba
| | - Pedro Cardoso
- Oncologic Hospital of Camaguey, Marie Curie, Camagüey, Cuba
| | - Rolando Morán
- Center for Genetic Engineering and Biotechnology of Camaguey, Camagüey, Cuba
| | - Yairis Fernández
- Department of Pharmacology of Camaguey Medical University, Camagüey, Cuba
| | - Magalys Campos
- Center for Genetic Engineering and Biotechnology, Havana, Cuba
| | - Henio Touduri
- Department of Pharmacology of Camaguey Medical University, Camagüey, Cuba
| | - Dania Bacardi
- Center for Genetic Engineering and Biotechnology, Havana, Cuba
| | - Indalecio Feria
- Clinical Trials Department of Oncologic Hospital Marie Curie of Camaguey, Marie Curie, Camagüey, Cuba
| | - Amilcar Ramirez
- Department of Pharmacology of Camaguey Medical University, Camagüey, Cuba
| | - Karelia Cosme
- Center for Genetic Engineering and Biotechnology, Havana, Cuba
| | | | | | - Verena Muzio
- Center for Genetic Engineering and Biotechnology, Havana, Cuba
| | - Ricardo Bringas
- Center for Genetic Engineering and Biotechnology, Havana, Cuba
| | - Marta Ayala
- Center for Genetic Engineering and Biotechnology, Havana, Cuba
| | - Mario Mendoza
- Oncologic Hospital of Camaguey, Marie Curie, Camagüey, Cuba
| | | | | | - Luis Herrera
- Center for Genetic Engineering and Biotechnology, Havana, Cuba
- BioCubafarma, Havana, Cuba
| | - Gerardo Guillén
- Center for Genetic Engineering and Biotechnology, Havana, Cuba
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