Valacyclovir for Mild Cognitive Impairment

NCT04710030 · Status: COMPLETED · Phase: PHASE2 · Type: INTERVENTIONAL · Enrollment: 50

Last updated 2026-03-31

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Summary

Anti-viral treatment in Mild Cognitive Impairment (MCI) is a Phase II, placebo-controlled, 52-week trial using oral valacyclovir 4 g/day in 50 HSV seropositive, AD biomarker-positive, amnestic mild cognitive impairment (MCI) patients (eMCI and lMCI). The trial will directly address the long-standing viral etiology hypothesis of Alzheimer's disease (AD) which posits that viruses, particularly the very common herpes simplex virus-1 (HSV1) and herpes simplex virus-2 (HSV2), may be etiologic or contribute to the pathology of AD. This trial will intervene at an earlier stage (MCI). We will compare the repurposed drug valacyclovir to placebo in patients with amnestic MCI (eMCI and lMCI) in a randomized, double-blind, two-arm parallel group 52-week pilot trial. Our Phase II trial will be the first antiviral drug trial conducted in MCI.

Conditions

Interventions

DRUG

Valacyclovir hydrochloride 500mg caplet

Active Comparator

DRUG

Placebo sugar pill caplet

Placebo Comparator

Sponsors & Collaborators

Principal Investigators

  • Davangere Devanand, MD · Columbia University

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
TRIPLE
Model
PARALLEL

Eligibility

Min Age
50 Years
Max Age
95 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2021-02-01
Primary Completion
2024-10-23
Completion
2024-12-23
FDA Drug
Yes

Countries

  • United States

Study Locations

More Related Trials

Entities

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT04710030 on ClinicalTrials.gov