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Published in: Clinical and Translational Oncology 4/2020

01-04-2020 | Neutropenia | Research Article

First-line panitumumab plus docetaxel and cisplatin in advanced gastric and gastro-oesophageal junction adenocarcinoma: results of a phase II trial

Authors: G. Quintero Aldana, M. Salgado, S. Candamio, J. C. Méndez, M. Jorge, M. Reboredo, L. Vázquez Tuñas, C. Romero, M. Covela, A. Fernández Montes, M. Carmona, Y. Vidal Insua, R. López, the Galician Oncological Research Group (GGIO)

Published in: Clinical and Translational Oncology | Issue 4/2020

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Abstract

Purpose

Panitumumab is extensively used for RAS-WT metastatic colorectal cancer. This study assessed the efficacy and safety of panitumumab plus first-line chemotherapy [docetaxel (DOC) and cisplatin (CIS)] in treatment-naïve advanced gastric or gastro-oesophageal junction (GEJ) adenocarcinoma (ADC) patients.

Methods

Phase II, open-label, single-arm study includes treatment-naïve advanced gastric or GEJ-ADC patients from ten Spanish centres. Patients received panitumumab (6 mg/kg) plus DOC and CIS (50 mg/m2 both) every 2 weeks until disease progression, unacceptable toxicity, or patient withdrawal. Primary endpoint: objective response rate (ORR); main secondary endpoints: disease control rate (DCR), duration of response (DoR), time to progressive disease (TTP), progression-free-survival (PFS), overall survival (OS), and safety.

Results

Forty-four patients were included; median age: 67.8 (range 43.3–82.7) years, 68.2% male. The ORR was 27.3% (95% CI 15.0, 42.8); median PFS and OS: 5.0 (95% CI 3.6, 6.9) and 7.2 (5.5, 9.0) months, respectively. Median TTP, DCR and DoR: 5.3 (range 3.8–7.0) months, 70.5% (95% CI 54.8, 83.2%), and 4.8 (1.8, NE) months. Median panitumumab treatment duration: 11.9 (range 0.1–34.9) weeks; 25.0% patients had a dose reduction and 40.9% discontinued treatment. Grade 3–4 adverse events (AEs): 68.2%/22.2% patients. Most common AEs: asthenia (75.0%) and mucosal inflammation (54.5%). Serious AEs were experienced by 54.6% patients; 9.1%, 13.6%, and 15.9% related to panitumumab, DOC, and CIS, respectively. Three (6.8%) patients died due to AEs not related to study treatment.

Conclusions

The addition of panitumumab to standard chemotherapy as the first-line treatment in advanced gastric or GEJ-ADC does not appear to improve the efficacy outcomes.
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Metadata
Title
First-line panitumumab plus docetaxel and cisplatin in advanced gastric and gastro-oesophageal junction adenocarcinoma: results of a phase II trial
Authors
G. Quintero Aldana
M. Salgado
S. Candamio
J. C. Méndez
M. Jorge
M. Reboredo
L. Vázquez Tuñas
C. Romero
M. Covela
A. Fernández Montes
M. Carmona
Y. Vidal Insua
R. López
the Galician Oncological Research Group (GGIO)
Publication date
01-04-2020
Publisher
Springer International Publishing
Published in
Clinical and Translational Oncology / Issue 4/2020
Print ISSN: 1699-048X
Electronic ISSN: 1699-3055
DOI
https://doi.org/10.1007/s12094-019-02151-6

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