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01.12.2012 | Research | Ausgabe 1/2012 Open Access

World Journal of Surgical Oncology 1/2012

Suboptimal chemotherapy is an adverse prognostic factor in osteosarcoma

Zeitschrift:
World Journal of Surgical Oncology > Ausgabe 1/2012
Autoren:
Bicheng Yong, Pingxian Tan, Junqiang Yin, Changye Zou, Xianbiao Xie, Jin Wang, Gang Huang, Qianyong Wang, Jingnan Shen
Wichtige Hinweise

Electronic supplementary material

The online version of this article (doi:10.​1186/​1477-7819-10-191) contains supplementary material, which is available to authorized users.
Bicheng Yong, Pingxian Tan contributed equally to this work.

Competing interests

We declare that we have no conflicts of interest.

Authors’ contributions

JNS and JW conceived the study. BCY, PXT, CYZ did the chart review. BCY and YQW followed up the patients and obtained the survival information. GH and BCY performed the statistical analysis and interpreted the results. BCY, XBX and JQY performed the literature review and wrote the manuscript. All authors read and approved the final manuscript.

Abstract

Background

We sought to determine whether suboptimal chemotherapy compromised the prognosis of osteosarcoma patients.

Methods

A total of 132 eligible patients who underwent chemotherapy between 1998 and 2008 were identified in our database. Information regarding patient demographics, clinical characteristics, and survival status were extracted for analysis. Optimal chemotherapy was defined as receipt of ≥80% of the planned dose intensity of prescribed agents within the planned durations.

Results

The use of optimal chemotherapy resulted in an overall survival benefit with P = 0.006. Patients who failed to complete the optimal chemotherapy protocol had a dismal prognosis of 30.8% overall survival over five years, whereas those who completed the optimal chemotherapy had an overall survival rate over five years of 65.3%. Based on multivariate analysis, patients who were treated with a suboptimal protocol had a higher risk of relapse, metastasis and mortality. The hazard ratio (HR) of recurrence or death for the suboptimal chemotherapy group was as high as 2.512 over that of the optimal chemotherapy group (HR = 2.512, 95% confidence interval = 1.242 to 3.729).

Conclusions

Chemotherapy is a significant independent prognostic variable, and suboptimal chemotherapy was found to have a detrimental effect on the outcome of patients with osteosarcoma.
Zusatzmaterial
Authors’ original file for figure 1
12957_2012_1185_MOESM1_ESM.tiff
Authors’ original file for figure 2
12957_2012_1185_MOESM2_ESM.tiff
Literatur
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