Question

CD59 marker of which disease

• A. PNH
• B. PTEN
• C. BRR
• D. Cowden syndrome

Answer 1

The Correct Option is A

The CD59 marker is associated with the disease Paroxysmal Nocturnal Hemoglobinuria (PNH). CD59 is a protein that regulates the complement system by inhibiting the formation of the membrane attack complex (MAC) on cell surfaces. In PNH, a genetic mutation affects the surface proteins that normally anchor CD59, leading to an increased susceptibility of red blood cells to be lysed by the complement system.

Disease	Associated Marker
PNH	CD59
PTEN	Not associated
BRR	Not associated
Cowden syndrome	Not associated