Task: Answer Verification
Input (English): Question: Is omeprazole-induced acute interstitial nephritis related to CYP2C19 genotype or CYP2C19 phenotype?
Answer: There was discordance between CYP2C19 genotype and phenotype. However, up to 45% of healthy elderly subjects have a poor metabolizer phenotype. Thus neither CYP2C19 poor metabolizer genotype nor phenotype is a risk factor for OIAIN.
Output (English): no