Comparing Treatment Response Between Older and Younger Patients with Chronic Hepatitis C Virus Infection on

Alyssa K Francis1, Francesca L Beaudoin2, Safiya S Naidjate3

  • 1School of Public Health, Brown University, Providence, RI.

Insights

Older adults achieve high sustained virologic response 12 weeks post-treatment (SVR12) rates with direct-acting antiviral (DAA) therapy, similar to younger patients. This challenges the notion of older individuals being a difficult-to-treat population for hepatitis C virus (HCV) infection.

Area of Science:

  • Hepatology
  • Virology
  • Geriatric Medicine

Background:

  • Chronic hepatitis C virus (HCV) infection historically presented treatment challenges, particularly in older populations.
  • Direct-acting antiviral (DAA) agents have revolutionized HCV treatment, offering high cure rates.

Purpose of the Study:

  • To compare sustained virologic response 12 weeks post-treatment (SVR12) in older versus younger adults with chronic HCV receiving DAA therapy.
  • To evaluate patient characteristics associated with treatment outcomes in different age groups.

Main Methods:

  • Retrospective cohort study of 154 patients with chronic HCV treated with DAA agents between 2015-2018.
  • Comparison of SVR12 rates and patient characteristics between older (≥60 years) and younger (<60 years) adults.
  • Statistical analysis using chi-squared tests.

Main Results:

  • Overall SVR12 rate was 94.1%.
  • SVR12 rates were comparable between older adults (91.8%) and younger adults (95.6%), with no statistically significant difference (p=0.51).

Conclusions:

  • Older adults are not a "difficult-to-treat" subpopulation for HCV with modern DAA therapy.
  • DAA therapy ensures high treatment success rates across different age groups for hepatitis C virus infection.
Abstract

Related Concept Videos

Factors Affecting Drug Response: Overview01:21

Factors Affecting Drug Response: Overview

When it comes to infants and young children, they are typically administered smaller doses of medication in comparison to adults. This is primarily because their organ functions still need to fully develop, meaning their bodies are not as efficient at metabolizing or eliminating drugs. Additionally, their blood-brain barrier is more permeable than in adults. As a result, high concentrations of drugs can easily penetrate the central nervous system (CNS), potentially leading to neurological...
2.7K
Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Metabolism01:18

Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Metabolism

Geriatric patients show significant variation in how their bodies process medications, which can change how effective and safe treatments are. The liver is the primary organ where drug metabolism occurs, involving two main types of chemical reactions: phase I and II. Phase I metabolism is driven by the cytochrome P450 enzyme system, which includes key types such as CYP3A, CYP2D6, and CYP2C9. Research indicates that while aging doesn't notably alter the levels or activity of these enzymes, it...
131
Effect of Hepatic Disease on Pharmacokinetics: Dose Adjustments Due to Hepatic Impairment01:08

Effect of Hepatic Disease on Pharmacokinetics: Dose Adjustments Due to Hepatic Impairment

Hepatic impairment, characterized by decreased liver function, does not uniformly mandate adjustments in drug dosage. Whether dosage modifications are necessary depends on various factors related to the drug's metabolism and elimination pathways. If a drug is primarily excreted via the kidneys and bypasses significant hepatic processing, if it undergoes minimal metabolic transformation in the liver, or if it is volatile and primarily expelled through the lungs, dose adjustments may not be...
126
Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Excretion01:18

Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Excretion

In geriatric patients, renal physiology undergoes significant changes, including diminished renal blood flow and a lower glomerular filtration rate (GFR), leading to alterations in medication clearance. Drugs such as aminoglycoside antibiotics, lithium, and digoxin, which rely on glomerular filtration for removal from the body, particularly impact pharmacokinetics. These drugs tend to have slower clearance rates in older adults, necessitating careful dosage considerations.Evaluation of renal...
176
Pharmacodynamics in Geriatric Patients: Effects of Age01:27

Pharmacodynamics in Geriatric Patients: Effects of Age

Age-related pharmacokinetic changes are extensively documented, but understanding age-related pharmacodynamic alterations is relatively limited. This knowledge gap can be partly attributed to the complexity of developing appropriate measures of drug responses compared to bioanalytical methods for determining drug concentrations.Most information regarding age-related differences in human pharmacodynamics originates from cross-sectional studies. However, these studies assume that observed mean...
134
Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Absorption01:22

Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Absorption

As individuals age, their body's physiology evolves, affecting drug pharmacokinetics. The most apparent changes occur in the gastrointestinal tract, where an increase in gastric pH, a delay in gastric emptying, and a reduction in gastrointestinal motility are observed. Remarkably, these changes do not substantially modify the absorption of orally administered drugs, particularly those absorbed via passive diffusion.Transdermal drug delivery emerges as a highly viable method for older adults due...
157