I recently miscarried at 7 weeks. diagnosed with iga and possibly igg deficiency . also have bicornuate uterus. can igg and iga def. cause miscarriage?

Clarification: See your doctor to go over the test results to get clarification. It is unclear here if your doctor was testing IgG and IgA as part of an antiphospholipid antibody workup for miscarriage or if you are referring to the genetic disorder of the immune system referred to as IgA deficiency. The impact on pregnancy depends on the diagnosis.