Co-Trimoxazole Allergy, also known as trimethoprim/sulfamethoxazole allergy, is related to cephalosporin allergy and solitary mastocytoma of the skin. An important gene associated with Co-Trimoxazole Allergy is ENPP3 (Ectonucleotide Pyrophosphatase/Phosphodiesterase 3), and among its related pathways/superpathways are Cytokine Signaling in Immune system and Development Angiotensin activation of ERK. Related phenotypes are Decreased viability and Decreased substrate adherent cell growth