Annals of oncology : official journal of the European Society for Medical Oncology · 2007
First-line single-agent cetuximab in patients with advanced colorectal cancer.
Клиническое исследование II фазыСтатьяПоддержка исследования: вне правительства СШАНазвание и аннотация: Перевод пока не подготовлен
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Pessino A, Artale S, Sciallero S, Guglielmi A, Fornarini G, Andreotti I C, Mammoliti S, Comandini D, Caprioni F, Bennicelli E, Andretta V, Siena S, Sobrero A
Аннотация
BACKGROUND: The anti-epidermal growth factor receptor (EGFR) antibody cetuximab is active in heavily pretreated patients with metastatic colorectal cancer (mCRC) both in monotherapy and in combination with chemotherapy (CT). This study assesses the antitumor activity of single-agent cetuximab in CT-naive patients.
PATIENTS AND METHODS: Phase II clinical trial was used. Patients were EGFR positive by immunohistochemistry and were not candidate for radical surgery, even in the case of substantial tumor shrinkage. Cetuximab was administered weekly.
RESULTS: Thirty-nine patients were treated and evaluated. The most common adverse event was skin toxicity (89% any grade; 48% grade 1; 31% grade 2; 10% grade 3). One patient had a complete response and three obtained partial responses (10% overall response rate). Thirteen patients had stable disease (34%). Twenty-two patients experienced progressive disease (56%). Overall median time to progression (TTP) was 2 months, and the responders individual TTP was 12, 9, 9, and 6 months.
CONCLUSIONS: Even in chemo-naive patients, cetuximab as single agent is active only in a small fraction of mCRC, similarly to what has been reported for heavily pretreated patients. The extent of benefit when response occurs is, however, such that it is mandatory to intensify the search for the predictive markers of response to cetuximab therapy.
PATIENTS AND METHODS: Phase II clinical trial was used. Patients were EGFR positive by immunohistochemistry and were not candidate for radical surgery, even in the case of substantial tumor shrinkage. Cetuximab was administered weekly.
RESULTS: Thirty-nine patients were treated and evaluated. The most common adverse event was skin toxicity (89% any grade; 48% grade 1; 31% grade 2; 10% grade 3). One patient had a complete response and three obtained partial responses (10% overall response rate). Thirteen patients had stable disease (34%). Twenty-two patients experienced progressive disease (56%). Overall median time to progression (TTP) was 2 months, and the responders individual TTP was 12, 9, 9, and 6 months.
CONCLUSIONS: Even in chemo-naive patients, cetuximab as single agent is active only in a small fraction of mCRC, similarly to what has been reported for heavily pretreated patients. The extent of benefit when response occurs is, however, such that it is mandatory to intensify the search for the predictive markers of response to cetuximab therapy.
Предметные рубрики MeSH
AdenocarcinomaAgedAged, 80 and overAntibodies, MonoclonalAntibodies, Monoclonal, HumanizedAntineoplastic AgentsBiomarkers, TumorCetuximabColorectal NeoplasmsDisease ProgressionDisease-Free SurvivalDrug Administration ScheduleDrug EruptionsErbB ReceptorsFemaleHumansImmunohistochemistryMaleMiddle AgedNail DiseasesPredictive Value of TestsPyodermaSkinSkin DiseasesTreatment Outcome