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Activity of Valomaciclovir in Infectious Mononucleosis Due to Primary Epstein-Barr Virus Infection

Randomized, Placebo-Controlled, Double-Blind Study to Assess Clinical and Antiviral Activity of Valomaciclovir (EPB 348) in Infectious Mononucleosis Due to Primary Epstein-Barr Virus Infection (Mono 6)

Status
Completed
Phases
Phase 1Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00575185
Acronym
Mono6
Enrollment
23
Registered
2007-12-18
Start date
2007-11-30
Completion date
2010-02-28
Last updated
2017-03-22

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Infectious Mononucleosis

Keywords

Mono, Mononucleosis, Epstein-Barr virus

Brief summary

This will be a randomized, placebo-controlled, double-blind single-center proof of concept study to evaluate the anti-EBV activity of 4 grams of valomaciclovir (2 grams BID) for 21 days in subjects with infectious mononucleosis documented to be caused by primary EBV infection. Otherwise healthy subjects (≥15 years old) referred to us with a clinical diagnosis of primary infectious mononucleosis will be screened and those with laboratory-confirmed primary EBV infection will be enrolled.

Detailed description

Subjects will be seen 2 times a week for 3 weeks and then weekly for 3 weeks. Clinical findings, clinical lab tests, EBV viral loads, and EBV antibody titers will be obtained at each clinic visit.

Interventions

DRUGValomaciclovir

4 grams orally of valomaciclovir (2 grams BID) for 21 days.

DRUGplacebo

Placebo tablets orally twice daily for 21 days.

Sponsors

Epiphany Biosciences
CollaboratorINDUSTRY
University of Minnesota
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender
ALL
Age
15 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Age 15 years or older * Within 14 days of initial symptoms of present illness diagnosed by a health care provider as infectious mononucleosis and confirmed to be due to primary EBV by antibody profile. The criteria for antibody confirmation of primary EBV at the screening visit are: 1)Positive for anti-EBV VCA IgM antibody and negative for anti-EBV EBNA1 IgG antibody; 2)EBV antibody testing will be done in the Clinical Virology Research Laboratory using commercial ELISA kits (Diamedix Corporation, Miami, FL). * Willingness to sign the Informed Consent Form (ICF) * Willingness to contribute samples of blood and oral washings at regular intervals * Males and females must use effective contraception during treatment and for at least 90 days following treatment * Negative pregnancy test result at the Screening Visit for females of childbearing potential (including females who have had a bilateral tubal ligation). Female patients of childbearing potential must be willing to use an approved method of double-barrier contraception (hormonal plus barrier or barrier plus barrier, eg, diaphragm plus condom) from the time of first dose administration until 90 days after completion of dosing and male patients with female partners of childbearing potential must be willing to use a condom. Patients who are sterile or infertile (defined as those who are postmenopausal or have undergone a complete hysterectomy) are eligible. * Estimated creatinine clearance (Cockcroft and Gault method) ≥ 60 ml/min * Absolute neutrophil count ≥ 1000 cells/microliter * Platelets ≥ 100,000/microliter * Hemoglobin ≥ 9.5 g/dL

Exclusion criteria

* Previous history of infectious mononucleosis-like illness * Immunosuppressed due to medical disease and/or immunosuppressive or immunomodulating medications (e.g., corticosteroids prior to enrollment, cytotoxic drugs, interferons) * Another intercurrent viral infection (including HIV), based on history or referring physician medical evaluation * More than 7 days elapsed since onset of illness (including screening time) * The following concomitant medications are prohibited: probenecid, trimethoprim, myelosuppressive therapies, and medications known to be nephrotoxic * Breast feeding during the study * Corticosteroids are not permitted. If they are prescribed by the subject's primary physician for treatment of this acute disease after the subject has enrolled, the subject will be replaced.

Design outcomes

Primary

MeasureTime frameDescription
Number of Participants With Improvement in Clinical Symptoms and Reductions in Viral Burden From Baseline21 daysAll subjects had confirmed cases of EB and will be assessed for Improvement of clinical symptoms (ie: tiredness, nausea etc)and reduction in viral burden from baseline

Secondary

MeasureTime frameDescription
Number of Participants Who Experienced Adverse Events During the Study Safety and Tolerability15 daysAssessing adverse events in participants to see if this drug causes more or less side effects

Countries

United States

Participant flow

Recruitment details

University of Minnesota students that contracted Mono and wsere seen at the student health center

Participants by arm

ArmCount
Valomaciclovir
Valomaciclovir 2 grams orally twice daily for 21 days Valomaciclovir : 4 grams orally of valomaciclovir (2 grams BID) for 21 days.
12
Placebo
placebo 2 tablets twice daily for 21 days placebo : Placebo tablets orally twice daily for 21 days.
11
Total23

Baseline characteristics

CharacteristicValomaciclovirPlaceboTotal
Age, Customized
<=18 years
0 particpants0 particpants0 particpants
Age, Customized
>=65 years
0 particpants0 particpants0 particpants
Age, Customized
Between 18 and 65 years
12 particpants11 particpants23 particpants
Region of Enrollment
United States
12 participants11 participants23 participants
Sex: Female, Male
Female
5 Participants5 Participants10 Participants
Sex: Female, Male
Male
7 Participants6 Participants13 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
— / —— / —
other
Total, other adverse events
7 / 125 / 11
serious
Total, serious adverse events
1 / 120 / 11

Outcome results

Primary

Number of Participants With Improvement in Clinical Symptoms and Reductions in Viral Burden From Baseline

All subjects had confirmed cases of EB and will be assessed for Improvement of clinical symptoms (ie: tiredness, nausea etc)and reduction in viral burden from baseline

Time frame: 21 days

ArmMeasureValue (NUMBER)
ValomaciclovirNumber of Participants With Improvement in Clinical Symptoms and Reductions in Viral Burden From Baseline12 participants
PlaceboNumber of Participants With Improvement in Clinical Symptoms and Reductions in Viral Burden From Baseline11 participants
Secondary

Number of Participants Who Experienced Adverse Events During the Study Safety and Tolerability

Assessing adverse events in participants to see if this drug causes more or less side effects

Time frame: 15 days

ArmMeasureValue (NUMBER)
ValomaciclovirNumber of Participants Who Experienced Adverse Events During the Study Safety and Tolerability12 participants
PlaceboNumber of Participants Who Experienced Adverse Events During the Study Safety and Tolerability11 participants

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026