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Clinical benefit of bone-targeted radiometabolic therapy with 153Sm-EDTMP combined with chemotherapy in patients with metastatic hormone-refractory prostate cancer

  • Sergio Ricci
  • Giuseppe Boni
  • Ilaria Pastina
  • Dario Genovesi
  • Claudia Cianci
  • Serena Chiacchio
  • Cinzia Orlandini
  • Mariano Grosso
  • Abedallatif AlSharif
  • Aldo Chioni
  • Samantha Di Donato
  • Francesco Francesca
  • Cesare Selli
  • Domenico Rubello
  • Giuliano MarianiEmail author
Original article

Abstract

Background

Bone metastases are responsible for most of the morbidity associated with hormone-refractory prostate cancer (HRPC). 153Sm-ethylenediaminetetramethylene phosphonate (153Sm-EDTMP) has been approved for palliation of painful skeletal metastases. We retrospectively investigated the possible synergistic effect on survival of 153Sm-EDTMP (given to HRPC patients for bone pain palliation) and chemotherapy.

Methods

Forty-five HRPC patients were evaluated, with a median age of 71 years. The number of metastatic bone sites was ≤10 in 25 patients and >10 in 20 patients. Median serum PSA was 224 ng/ml. Bone pain was mild in 6 patients, moderate in 16, severe in 22 and intolerable in 1. Fifteen patients were only treated with 153Sm-EDTMP (group A), while 30 patients also received chemotherapy (estramustine phosphate or mitoxantrone plus prednisone) at variable times: between 3 and 5 months after 153Sm-EDTMP (14 patients, group B) or within 1 month after 153Sm-EDTMP (16 patients, group C).

Results

Haematological toxicities observed after either regimen were in general mild, consistent with common observations after either 153Sm-EDTMP or chemotherapy, and without any additive adverse effects in the patients receiving both 153Sm-EDTMP and chemotherapy. Bone pain palliation to some degree was induced by 153Sm-EDTMP in 32/45 patients (71.1%), the proportion of patients with a favourable clinical response being significantly higher in group C than in group A (87.5% vs 53.3%, p = 0.0388). Also in terms of biochemical response (serum PSA levels), patients of group C performed significantly better than patients of group A (p = 0.0235). Overall median survival from the time of administration of 153Sm-EDTMP was 15 months in the total cohort of 45 patients, and was significantly longer in group C than in either group B (30 months vs 11 months, p = 0.023) or group A (30 months vs 10 months, p = 0.008).

Conclusion

The results of this study confirm that 153Sm-EDTMP is effective in terms of pain relief and PSA response, with minimal toxicity. When it was administered in combination with chemotherapy, prolonged survival indicated actual clinical benefit, while there were no additive toxicities. These results provide the rationale for future prospective evaluation of combined therapeutic strategies.

Keywords

Hormone-refractory prostate cancer 153Sm-EDTMP Chemotherapy Combination therapy Clinical benefit 

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Copyright information

© Springer-Verlag 2007

Authors and Affiliations

  • Sergio Ricci
    • 1
  • Giuseppe Boni
    • 2
  • Ilaria Pastina
    • 1
  • Dario Genovesi
    • 2
  • Claudia Cianci
    • 1
  • Serena Chiacchio
    • 2
    • 7
  • Cinzia Orlandini
    • 1
  • Mariano Grosso
    • 2
  • Abedallatif AlSharif
    • 2
    • 6
  • Aldo Chioni
    • 1
  • Samantha Di Donato
    • 1
  • Francesco Francesca
    • 3
  • Cesare Selli
    • 4
  • Domenico Rubello
    • 5
  • Giuliano Mariani
    • 2
    Email author
  1. 1.Division of Medical Oncology, Department of OncologyUniversity HospitalPisaItaly
  2. 2.Regional Center of Nuclear MedicineUniversity of Pisa Medical SchoolPisaItaly
  3. 3.Division of UrologyUniversity HospitalPisaItaly
  4. 4.Section of Urology, Department of SurgeryUniversity of Pisa Medical SchoolPisaItaly
  5. 5.Nuclear Medicine Service-PET Center“S. Maria della Misericordia” HospitalRovigoItaly
  6. 6.Division of Radiology and Nuclear Medicine, Department of Internal MedicineJordan University HospitalAmmanJordan
  7. 7.CNR Institute of Clinical PhysiologyPisaItaly

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