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Clinical Trial Summary

Maintenance therapy with trabectedin versus observation after first line treatment with doxorubicin of patients with advanced or metastatic soft tissue sarcoma.

This is a prospective, multicenter, randomized, open label Phase III trial investigating whether a maintenance treatment with trabectedin, as compared to the observational approach, can prolong progression-free survival in patients with advanced, inoperable and/or metastatic STS after response or stabilisation during first line treatment with doxorubicin.


Clinical Trial Description

Progression free survival will be estimated by the Kaplan-Meier method. The median survival time and its associated 95% non-parametric CI will be provided. Rates at 3 month intervals will be estimated using the log-log transformation of the Kaplan-Meier estimates and the standard deviation of the Kaplan Meier estimate based on the Greenwood formula.

For the primary analysis, PFS from randomization will be compared between the two arms using the score test from a Cox proportional hazards model adjusted for histology (stratification factor). The corresponding estimate of the treatment effect (hazard ratio) and 95% CI will be provided.

Secondary analyses include:

- the primary comparison of PFS repeated using methods for interval-censored data to adjust for deviations from the planned imaging scheduled, if any.

- the above mentioned analyses performed for PFS measured from date of starting firstline doxorubicin treatment.

Overall survival and time to second progression (PFS2) measured from randomization and from starting firstline doxorubicin treatment will be estimated by the Kaplan-Meier method. The median times and their associated 95% non-parametric CI will be calculated. Rates at 3 month intervals will be estimated using the log-log transformation of the Kaplan-Meier estimates and the standard deviation of the Kaplan Meier estimate based on the Greenwood formula. They will be compared between the two arms using an adjusted Cox proportional hazards model; the corresponding estimates of the hazard ratio and 95% CI will be provided. The above mentioned PFS2 comparison will also be repeated using methods for interval-censored data.

The adverse events related to the treatment (excluding those declared not reasonably possibly related to the treatment, but including those with relationship not assessable) will be described in the safety population. Worst grade of the AEs will be tabulated. Whenever a CTCAE code exists, the grade will be displayed according to that system, otherwise the values will be coded in up to three categories as below lower limit of normal (LLN), within normal range, and above upper limit of normal (ULN), as deemed appropriate.

The percentage of patients presenting severe treatment-related AE (grade ≥ 3), of patients reported to have died of toxicity and of patients who stopped treatment due to toxicity will be calculated and the 95% confidence interval will be presented. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT02929394
Study type Interventional
Source European Organisation for Research and Treatment of Cancer - EORTC
Contact
Status Terminated
Phase Phase 3
Start date November 7, 2017
Completion date June 5, 2020

See also
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