Biology Biotechnology and Its Application All Topic Question For Revision Test Single Correct MCQ
Published on: August 13, 2026

The first clinical gene therapy was given in 1990 to a 4 years old girl with enzyme deficiency of

A
adenosine deaminase (ADA)
B
tyrosine oxidase
C
monoamine oxidase
D
glutamate dehydrogenase

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The correct answer is:
A

The first successful clinical gene therapy (1990) was given to a child suffering from Adenosine Deaminase (ADA) deficiency, which causes severe combined immunodeficiency (SCID).

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