Drug General Information (ID: DDIJ4Z8S6U)
Drug Name			Cetuximab		Drug Info		Methoxsalen		Drug Info
Drug Type		Monoclonal antibody				Small molecule
Therapeutic Class		Antineoplastics				Antineoplastics

Mechanism of Cetuximab-Methoxsalen Interaction (Severity Level: Moderate)
Increased risk of photosensitivity reactions Click to Show/Hide Mechanism Graph
Drug Name		Cetuximab				Methoxsalen
Mechanism		Photosensitivity reactions				Photosensitivity reactions
Key Mechanism Factor 1
		Factor Name		Photosensitivity reactions
		Factor Description		Drug-induced photosensitivity reactions occur when certain photosensitizing drugs cause unexpected sunburn or dermatitis (dry, bumpy or blistering rash) on sun-exposed skin (face, neck, arms, backs of hands, and often lower legs and feet). The rash may or may not be itchy.
Mechanism Description		Increased risk of photosensitivity reactions by the combination of Cetuximab and Methoxsalen

Recommended Action
Management		Caution is advised and pharmacologic response to methoxsalen therapy should be carefully monitored if concomitant use of other photosensitizing agents cannot be avoided. Patients should be advised to avoid sun exposure, even through window glass or cloud cover, for at least 8 hours after methoxsalen ingestion and during the 24 hours following photochemotherapy or photopheresis treatment.

References
1	Cerner Multum, Inc. "Australian Product Information.".
2	Multum Information Services, Inc. Expert Review Panel.
3	Product Information. Nulibry (fosdenopterin). Origin Biosciences Inc, Boston, MA.
4	Product Information. Oxsoralen (methoxsalen). ICN Pharmaceuticals Inc, Costa Mesa, CA.
5	Product Information. Uvadex (methoxsalen). Therakos Inc, Exton, PA.