A Clinical Trial of Panitumumab in Combination With FOLFIRI Chemotherapy as Second Line Treatment in Subjects With Metastatic Colorectal Cancer Expressing Wild-type KRAS and Who Had Progressed ≥ 6 Months After the Last Dose of the First Line Chemotherapy

More than one previous chemotherapy regimen for mCRC consisting of first line chemotherapy based on fluoropyrimidines and/or oxaliplatin (patients receiving first-line chemotherapy based on irinotecan are not candidate for this study).

Progression of the disease during the first line treatment or less than 6 months after completing the last cycle of first line chemotherapy for mCRC.

Systemic chemotherapy, hormone treatment, immune therapy or experimental or approved antibodies/proteins (e.g. bevacizumab) ≤ 30 days prior to inclusion.

Unresolved toxicity from a prior systemic treatment which, in the investigator's opinion, makes the subject unsuitable for inclusion.

Metastasis in brain/central nervous system (exception: subjects who have been treated, have asymptomatic metastases in the central nervous system and have not been receiving steroids for at least the 30 days prior to inclusion in the study are eligible).

Significant cardiovascular disease, including unstable angina pectoris or myocardial infarction within the 6 months prior to the start of the study treatment, or history of ventricular arrhythmia.

Previous treatment with anti-EGFr antibodies (e.g. cetuximab) or treatment with small molecule Epidermal Growth Factor Receptor (EGFr) tyrosine kinase inhibitors (e.g. erlotinib).

History of interstitial pneumonia or pulmonary fibrosis or signs of interstitial pneumonia or pulmonary fibrosis on the baseline chest X-ray.

Treatment for systemic infection within the 14 days prior to starting the study treatment.

Radiotherapy ≤ 14 days prior to inclusion. Patients must have recovered from all radiotherapy-related toxicity.

Active inflammatory bowel or other intestinal disease causing chronic diarrhoea (defined as \> 4 loose bowel movements per day).

History of Gilbert's syndrome or dihydropyrimidine deficiency.

History of any disease which could increase the risks associated to participation in the study or interfere in the interpretation of the study results.

Known positive test for infection by human immune deficiency virus, hepatitis C, chronic active hepatitis B.

Subject allergic to the ingredients of the study medication of protein A of Staphylococcus.

Any comorbid disease which could increase the risk of toxicity.

The subject presents a disorder of any kind which compromises his/her ability to provide informed consent in writing and/or follow the study procedures.

Any investigational agent within the 30 days prior to inclusion.

Major surgery within the 28 days prior to study enrollment.

Pregnant or breastfeeding women.

Women or men of childbearing age who do not agree to use appropriate double barrier contraceptive methods (e.g. diaphragm plus condom) or remain abstinent throughout the study and for 6 months after the last administration of the study drug for women and 1 month for men.

Subjects who do not wish to meet the study requirements or are unable to do so.

What this study is about