J Korean Med Sci.  2016 Jul;31(7):1055-1062. 10.3346/jkms.2016.31.7.1055.

High-Dose Chemotherapy and Autologous Stem Cell Transplantation in Children with High-Risk or Recurrent Bone and Soft Tissue Sarcomas

• Choi YB
• Yi ES
• Lee JW
• Yoo KH
• Sung KW
• Koo HH

• KMID: 2373723
• DOI: http://doi.org/10.3346/jkms.2016.31.7.1055

Abstract

Despite increasing evidence that high-dose chemotherapy and autologous stem cell transplantation (HDCT/auto-SCT) might improve the survival of patients with high-risk or recurrent solid tumors, therapy effectiveness for bone and soft tissue sarcoma treatment remains unclear. This study retrospectively investigated the feasibility and effectiveness of HDCT/auto-SCT for high-risk or recurrent bone and soft tissue sarcoma. A total of 28 patients (18 high-risk and 10 recurrent) underwent single or tandem HDCT/auto-SCT between October 2004 and September 2014. During follow-up of a median 15.3 months, 18 patients exhibited disease progression and 2 died of treatment-related toxicities (1 veno-occlusive disease and 1 sepsis). Overall, 8 patients remained alive and progression-free. The 3-year overall survival (OS) and event-free survival (EFS) rates for all 28 patients were 28.7% and 26.3%, respectively. In the subgroup analysis, OS and EFS rates were higher in patients with complete or partial remission prior to HDCT/auto-SCT than in those with worse responses (OS, 39.1% vs. 0.0%, P = 0.002; EFS, 36.8% vs. 0.0%, P < 0.001). Therefore, careful selection of patients who can benefit from HDCT/auto-SCT and maximal effort to reduce tumor burden prior to treatment will be important to achieve favorable outcomes in patients with high-risk or recurrent bone and soft tissue sarcomas.

Keyword

Bone and Soft Tissue Sarcoma; Children; High-Dose Chemotherapy; Autologous Stem Cell Transplantation

MeSH Terms

Adolescent
Antineoplastic Combined Chemotherapy Protocols/*therapeutic use
Bone Neoplasms/mortality/pathology/*therapy
Child
Child, Preschool
Disease-Free Survival
Female
Follow-Up Studies
Humans
Infant
Male
Retrospective Studies
Sarcoma/mortality/pathology/*therapy
Soft Tissue Neoplasms/mortality/pathology/*therapy
*Stem Cell Transplantation
Survival Rate
Transplantation, Autologous
Treatment Outcome
Young Adult

Figure

• 

  Fig. 1 Overview of treatment flow and outcome. Treatment flow and outcome of all patients were illustrated. Overall, 8 patients (4 high-risk and 4 recurrent tumor) who achieved complete remission to prior therapy remained progression-free after high dose chemotherapy. CR, complete remission; PR, partial remission; SD, stable disease; PD, progressive disease; HDCT, high-dose chemotherapy; NED, no evidence of disease; DOD, died of disease; TRM, treatment-related mortality; AWD, alive with disease. *This patient showed increased enhancing lesion after the HDCT/auto-SCT and seemed to have PD, but the lesion decreased without any treatment. The increased enhancing lesion was retrospectively suspected as radiotherapy related change.

• 

  Fig. 2 Survival graph of all patients. The overall survival (OS) and event-free survival (EFS) rates, which were calculated from the date of transplantation, for all 28 patients are 28.7% (95% confidence interval [CI], 23.1%–45.7%) and 26.3% (95% CI, 13.4%–34.5%), respectively (A). There are no differences in OS and EFS between high-risk and recurrent tumors (B). The OS and EFS rates are significantly higher in patients who achieved complete remission (CR) or partial remission (PR) to prior therapy compared with those in patients who had stable disease (SD) or progressive disease (PD) after prior therapy (C).

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