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® is an epidermal growth factor receptor (EGFR) antagonist indicated for treatment of: Head and Neck Cancer Locally or regionally advanced squamous cell carcinoma of the head and neck in combination with radiation therapy. ( 1.1 , 14.1 ) Recurrent locoregional disease or metastatic squamous cell carcinoma of the head and neck in combination with platinum-based therapy with fluorouracil. ( 1.1 , 14.1 ) Recurrent or metastatic squamous cell carcinoma of the head and neck progressing after platinum-based therapy. ( 1.1 , 14.1 ) Colorectal Cancer K-Ras wild-type, EGFR-expressing, metastatic colorectal cancer as determined by an FDA-approved test in combination with FOLFIRI for first-line treatment, in combination with irinotecan in patients who are refractory to irinotecan-based chemotherapy, as a single-agent in patients who have failed oxaliplatin- and irinotecan-based chemotherapy or who are intolerant to irinotecan. ( 1.2 , 5.7 , 12.1 , 14.2 ) Limitations of Use: ERBITUX is not indicated for treatment of Ras-mutant colorectal cancer or when the results of the Ras mutation tests are unknown. ( 5.7 ) BRAF V600E Mutation-Positive Metastatic Colorectal Cancer (CRC) in combination with encorafenib, for the treatment of adult patients with metastatic colorectal cancer (CRC) with a BRAF V600E mutation, as detected by an FDA-approved test, after prior therapy. ( 1.3 ) 1.1 Squamous Cell Carcinoma of the Head and Neck (SCCHN) ERBITUX ® is indicated: in combination with radiation …

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Infusion Reactions: Monitor patients following infusion. Immediately stop and permanently discontinue ERBITUX for serious infusion reactions. ( 2.5 , 5.1 ) Cardiopulmonary Arrest: Monitor serum electrolytes during and after ERBITUX. ( 5.2 , 5.6 ) Pulmonary Toxicity: Interrupt or permanently discontinue for acute onset or worsening of pulmonary symptoms. ( 2.5 , 5.3 ) Dermatologic Toxicity: Monitor for dermatologic toxicities or infectious sequelae. Limit sun exposure. ( 2.5 , 5.4 ) Hypomagnesemia and Accompanying Electrolyte Abnormalities: Monitor during treatment and for at least 8 weeks following the completion. Replete electrolytes as necessary. ( 5.6 ) Increased tumor progression, increased mortality, or lack of benefit observed in patients with Ras-mutant mCRC. ( 5.7 ) Embryo-Fetal Toxicity: Can cause fetal harm. Advise females of potential risk to the fetus and to use effective contraception. ( 5.8 , 8.1 , 8.3 ) 5.1 Infusion Reactions ERBITUX can cause serious and fatal infusion reactions. Infusion reactions of any grade occurred in 8.4% of 1373 patients who received ERBITUX across clinical trials. Severe (Grades 3 and 4) infusion reactions occurred in 2.2% of patients [see Adverse Reactions ( 6.1 )] . Signs and symptoms included rapid onset of airway obstruction (bronchospasm, stridor, hoarseness), hypotension, shock, loss of consciousness, myocardial infarction, and/or cardiac arrest. The risk of anaphylactic reactions may be increased in patients with a history of …

8.1 Pregnancy Risk Summary Based on findings from animal studies and its mechanism of action [see Clinical Pharmacology ( 12.1 )] , ERBITUX can cause fetal harm when administered to a pregnant woman. There are no available data for ERBITUX exposure in pregnant women. In an animal reproduction study, intravenous administration of cetuximab once weekly to pregnant cynomolgus monkeys during the period of organogenesis resulted in an increased incidence of embryolethality and abortion. Disruption or depletion of EGFR in animal models results in impairment of embryo-fetal development including effects on placental, lung, cardiac, skin, and neural development ( see Data ). Human IgG is known to …