Adenosine deaminase deficiency can be permanently cured by which of the following methods ?

Options

A. Bone marrow transplantation
B. Enzyme replacement therapy
C. Gene therapy at early embryonic stages
D. All of these

Answer

C

Explanation

Adenosine deaminase (ADA) deficiency can be treated by bone marrow transplantation, or by enzyme replacement therapy, in which functional, ADA is given to the patient by injection. But permanent treatment can be done by the introduction of genes isolated from bone marrow cells, which produces ADA, into the cells of the patient at an early embryonic stage.