Cabazitaxel Activity in Patients With Advanced AdrenoCortical-Carcinoma Progressing After Previous Chemotherapy Lines

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    Azienda Socio Sanitaria Territoriale degli Spedali Civili di Brescia
Updated on 5 December 2022
cytotoxic chemotherapy
neutrophil count


Adrenocortical cancer (ACC) is a rare aggressive tumor. The treatment of metastatic ACC is challenging and the current available treatments are mitotane, chemotherapy or the combination of both. Prognosis in locally advanced inoperable and metastatic ACC patients still remains poor, the 5-year overall survival being <15%. New treatment strategies are therefore needed. The taxanes are a class of drugs targeting the microtubules that have shown to be effective in the treatment of several malignancies but have not been fully developed in patients with ACC. Cabazitaxel is a new taxoid which promotes the tubulin assembly in vitro and stabilizes microtubules against cold-induced depolymerization as efficiently as docetaxel. Cabazitaxel was selected for development based on a better antiproliferative activity on resistant cell lines than docetaxel. The activity of the drug against several malignancies is currently tested in ongoing prospective studies, but to our knowledge neither preclinical nor clinical studies are currently testing cabaztaxel in ACC. This study is aimed to demonstrate that cabazitaxel is active in ACC, but the drug was never tested before in this clinical setting. A prospective, non-randomized, multicentre, open label, single arm, phase II study will be conducted in patients with advanced ACC. The phase II study will be conducted in 2 different Italian Institutions that are reference centers for ACC.


CABAZITAXEL ADMINISTRATION Cabazitaxel will be administered at dose of 25 mg/m2 every 3 weeks, administered by IV route in 1 hour, for a maximum of 6 total cycles. The drug will be provided by Sanofi -Aventis S.p.A. Concomitant mitotane therapy will not be permitted however mitotane will be maintained in patients with hormone secreting tumors. Cycle length for cabazitaxel is 3 weeks. New cycles of therapy may not begin until Absolute Neutrophil Count (ANC) 1500/mm3, platelet count 75 000/mm3, and non-hematological toxicities (except alopecia) have recovered to baseline.

A maximum of 2 weeks delay is allowed between 2 treatment cycles.

PHARMACOKINETIC STUDY Another study aims will be to assess the toxicity of cabazitaxel therapy in ACC patients. As mitotane notoriously interfere with the metabolism of several drugs (11), an ancillary study will be conducted to assess the pharmacokinetic profile of cabazitaxel in the patient population with hormone secreting tumors that will maintain mitotane administration vs patients with non secreting ACC in which mitotane will be stopped. Blood samples will be collected in lithium heparinized tubes at fixed time points before and after drug infusion: Cycles 1 on Day 1 just before infusion, 30 min after start of infusion, 5 min before the end of 1-hour infusion (Tmax), 24 h, 48h and 96 h post-infusion. Cabazitaxel serum concentrations will be measured in plasma using a validated liquid chromatography-tandem mass spectrometry method: the Agilent 1260 Infinity LC equipped with an Agilent 6460 Triple Quadrupole Mass Spectrometer (QQQ) in electrospray mode systems.

STATISTICAL ANALYSIS All data collected at baseline, including recorded and derived variables will be described on all patients by means of summary descriptive statistics: mean, standard deviation, median, min, max, 25th and 75th percentiles for continuous variables; absolute and relative frequency for categorical variables. The relative frequencies will be calculated on the total patients with and without missing data. Whenever possible the data will be described by visit.

Chi square ore Fisher test, when applicable will be employed to compare categorical variables. Student T-test and analysis of variance for parametric or Wilcoxon's matched pairs signed-rank test and Friedman analysis of variance for non parametric data will be used to compare paired data. Simple correlation analysis will be performed by Spearman rho (coefficient of Spearman's rank correlation) for nonparametric distribution. Two-tailed tests will be used for all comparisons and p <0.05. All survival functions will computed using the Kaplan-Meier method. Survival curves will be compared with the log rank test.

CONCOMITANT MEDICATION Concurrent treatment with strong inhibitors and strong inducers of cytochrome P450 3A4 is not permitted. For patients who were receiving treatment with such agents, a 2-week washout period is required prior to randomization. Concurrent participation in another clinical trial or treatment with any other anti-cancer therapy is also not permitted. The Investigator may prescribe any other concomitant medications as deemed necessary.

Condition Adenocarcinoma, Malignant Adenoma, Adenocarcinoma, Adrenocortical carcinoma, Malignant Adenoma
Treatment Cabazitaxel
Clinical Study IdentifierNCT03257891
SponsorAzienda Socio Sanitaria Territoriale degli Spedali Civili di Brescia
Last Modified on5 December 2022

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