Task: Answer Verification
Input (English): Question: Is gRK5 Gln41Leu polymorphism associated with sensitivity to beta ( 1 ) -adrenergic blockade in humans?
Answer: The GRK5 Gln41Leu polymorphism does not affect sensitivity to the beta(1)-adrenergic blocker, atenolol, during acute physiological adrenergic stimulation, nor does it contribute to the ethnic differences in sensitivity to atenolol among black and Caucasian individuals.
Output (English): no