Quiz: Selective IgA Deficiency
Question 1 of 3  

Which of the following findings increases a patient’s risk of having selective IgA deficiency by about 50 times?

  • A.

    Deletion of a gene in the major histocompatibility complex class III region

  • B.

    Family member with the disorder

  • C.

    Mutation in the TACI gene

  • D.

    Phenytoin in their medication regimen

Am I correct?