30. Which of the following statements about X-linked Severe Combined
Immunodeficiency (X-SCID) is correct?
(A) X-SCID is an autosomal dominant disorder characterized by a fully
functional immune system but increased susceptibility to autoimmune diseases.
(B) X-SCID is characterized by an overactive immune response, leading to
chronic inflammation and autoimmunity due to the dysregulation of T and B
lymphocytes.
(C) X-SCID is caused by a mutation in the IL2RG gene on the X chromosome,
leading to a severe defect in both T and B lymphocyte function.
(D) The most effective treatment for X-SCID is long-term administration of
antibiotics and antiviral medications to manage infections.
(E) X-SCID patients are generally resistant to common viral infections due to
compensatory mechanisms in the innate immune system.