Mafenide (usually as mafenide acetate, trade name Sulfamylon) is a sulfonamide-type medication used as an antibiotic. Mafenide is used to treat severe burns. It is used topically as an adjunctive therapy for second- and third-degree burns. It is bacteriostatic against many gram-positive and gram-negative organisms.Wikipedia
The FDA-approved drug label  for mafenide states that fatal hemolytic anemia with disseminated intravascular coagulation has been reported following treatment with mafenide, possibly related to a G6PD-deficiency. However, no particular precaution, warning or test is discussed.
|Genotype/Genoset||Diplotype||Gene||Drug Use/Category/Class||Medical Field||Summary||Descriptive Sentence|
|gs309||WT/WT||G6PD||Anti-microbial||Infectious Disease||Normal Response Expected||You do not appear to carry any G6PD mutations linked to an unwanted side effect (hemolytic anemia).|
|gs307||Carrier||G6PD||Anti-microbial||Infectious Disease||Use with Caution||You carry a G6PD mutation that might lead to an unwanted side effect (hemolytic anemia) when taking mafenide.|
|gs308||G6PD-deficient||G6PD||Anti-microbial||Infectious Disease||Use with Caution||You carry a G6PD mutation potentially linked to an unwanted side effect (hemolytic anemia) when taking mafenide; be aware of this possibility.|