What role do drug transporters play in pharmacogenomics?

Question

BlackTom AI · Accepted Answer

To understand the question, we start by identifying what drug transporters do in the context of pharmacogenomics.
Option 1 suggests that transporters change the genetic code to better suit drug therapy. In reality, transporters do not alter DNA sequences or gene coding; their role is functional, affecting how drugs are moved across cellular membranes, not genetic material itself.
Option 2 states that transporters influence drug absorption, distribution, metabolism, and excretion (ADME). This aligns with established pharmacokinetic principles: transporters can affect how drugs enter cells (absorption), how they reach target tissues or are distributed within the body, how they interact with metabolic enzymes and other pathways, and how they are eliminated (excretion).
Option 3 claims transporters increase the immunogenicity of a drug. Immunogenicity relates to immune recognition and antigenicity, not the transport of drugs across membranes; transporter activity is not a primary driver of a drug’s immunogenic potential.
Option 4 asserts transporters alter the pH levels in the stomach to improve drug solubility. Transporters do not regulate gastric pH; acid-base balance in the stomach is governed by other physiological processes and secretions, not transporter function.
Overall, the most accurate characterization is that drug transporters modulate the ADME processes, impacting how drugs are absorbed, distributed, metabolized, and excreted, which has direct implications for pharmacogenomics and individual variability in drug response.

PCOL2021 2025 Module 3 Practice quiz

What role do drug transporters play in pharmacogenomics?

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