ALA<unk><unk>  is inherited in an autosomal recessive manner. This means a defective gene responsible for the disorder is located on an autosome, and two copies of the defective gene (one inherited from each parent) are required in order to be born with the disorder. The parents of an individual with an autosomal recessive disorder both carry one copy of the defective gene, but usually do not experience any signs or symptoms of the disorder. In conditions where both parents are carriers: * The risk of having a child with ADP is 25% for each pregnancy. * The risk of having a child who is also a carrier is 50%. * The chance of having a child who is unaffected and is not a carrier is 25%.
Aminolevulinic acid dehydratase deficiency porphyria
Harderoporphyria
Pseudoporphyria
Hepatoerythropoietic porphyria
Donath–Landsteiner hemolytic anemia
Erythropoietic porphyria
Hepatic porphyria
Erythropoietic protoporphyria