{{Genotype
|rsid=2272783
|allele1=C
|allele2=T
|magnitude=2.2
|repute=Bad
|summary=Low expression variant of FECH enzyme
}}
If your other FECH allele is normal, you are most likely asymptomatic. However, if you harbor this rs2272783(C;T) genotype AND your other FECH allele is actually nonfunctional, you are likely to have symptoms associated with Erythropoietic protoporphyria.