Randomized Multicentric Proof-of-Concept Phase 2 Trial Doravirine in the Early Outpatient Management of West Nile Virus Infection in Patients at Risk of Progression - DORICO Trial

2025-521677-14-00 Protocol DORICO Therapeutic exploratory (Phase II) Authorised, recruitment pending

Status Authorised, recruitment pending · 1 EU/EEA countries · 2 sites · Protocol DORICO

Overview

Sponsor-declared trial summary

Phase Therapeutic exploratory (Phase II)
Status Authorised, recruitment pending
Participants planned 50
Countries 1
Sites 2

West Nile Virus Infection

Reduction of the time required for a 4-fold decline in viremia in patients with WNV infection and risk factors for progression through the use of doravirine.

Key facts

Sponsor
Azienda Socio Sanitaria Territoriale Degli Spedali Civili Di Brescia
Participant type
Patients
Age range
18-64 years, 65+ years
Gender
Male and Female
Therapeutic area
Diseases [C] - Virus Diseases [C02]
Decision date (initial)
2025-10-24
Transition trial
No
Low-intervention
No
Rare-disease indication
No
Vulnerable population
No

Trial design

CTIS Part I — objectives, methods, condition coding

Main objective

Scope: Therapy, Efficacy

Reduction of the time required for a 4-fold decline in viremia in patients with WNV infection and risk factors for progression through the use of doravirine.

Secondary objectives 1

  1. Reduction of the duration of symptoms in patients with WNV infection and risk factors for progression through the use of doravirine.

Conditions and MedDRA coding

West Nile Virus Infection

Eligibility criteria

Principal inclusion / exclusion criteria as submitted by sponsor

Inclusion criteria 4

  1. Age ≥ 18 years
  2. Confirmed diagnosis of WNV infection
  3. Presence of at least one risk factor for progression to WNND
  4. Signed informed consent

Exclusion criteria 4

  1. Age < 18 years
  2. Absence of risk factors for progression to WNND
  3. Lack of informed consent
  4. Concomitant treatment with carbamazepine, oxcarbazepine, phenobarbital, phenytoin, rifampicin, rifapentine, St. John’s Wort (Hypericum perforatum), mitotane, enzalutamide, or lumacaftor

Endpoints

Primary and secondary outcome measures (English text)

Primary endpoints 1

  1. To evaluate the percentage of patients in whom early treatment with Doravirine (DOR), administered to outpatients with West Nile Virus (WNV) infection and risk factors for progression, accelerates the 4-fold decline in viremia compared to the standard of care (SOC)

Secondary endpoints 1

  1. To evaluate the percentage of patients in whom early treatment with DOR, administered to outpatients with WNV infection and risk factors for progression, expedites the resolution of fever compared to SOC.

Investigational products

Investigational medicinal products (IMPs), comparators, placebo, auxiliary

Test 1

Pifeltro 100 mg film-coated tablets

PRD6790340 · Product

Active substance
Doravirine
Pharmaceutical form
FILM-COATED TABLET
Route of administration
ORAL USE
Max daily dose
100 mg milligram(s)
Max total dose
500 mg milligram(s)
Max treatment duration
5 Day(s)
Authorisation status
Authorised
ATC code
J05AG06 — -
Marketing authorisation
EU/1/18/1332/001
MA holder
MERCK SHARP & DOHME B.V.
MA country
EU
Paediatric formulation
No
Orphan designation
No
Modified vs. Marketing Authorisation
No

Sponsors and contacts

Sponsor organisations, regulatory contacts, third parties

Azienda Socio Sanitaria Territoriale Degli Spedali Civili Di Brescia

8 Total trials 2 Recruiting
Academic / Non-commercial
Sponsor organisation
Azienda Socio Sanitaria Territoriale Degli Spedali Civili Di Brescia
Address
Piazzale Spedali Civili 1
City
Brescia
Postcode
25123
Country
Italy

Scientific contact point

Organisation
Azienda Socio Sanitaria Territoriale Degli Spedali Civili Di Brescia
Contact name
Dr. Aldo M. Roccaro

Public contact point

Organisation
Azienda Socio Sanitaria Territoriale Degli Spedali Civili Di Brescia
Contact name
Dr. Aldo M. Roccaro

Locations

1 EU/EEA country · 2 investigational sites

By country

CountryMS statusPlanned subjectsSites
Italy Authorised, recruitment pending 50 2
Rest of world 0

Investigational sites

Italy

2 sites · Authorised, recruitment pending
Azienda Socio Sanitaria Territoriale Degli Spedali Civili Di Brescia
Tropical Infectious Diseases SSD, Piazzale Spedali Civili 1, 25123, Brescia
Azienda Socio Sanitaria Territoriale Degli Spedali Civili Di Brescia
Infectious Diseases Unit, Piazzale Spedali Civili 1, 25123, Brescia

Results and documents

Annex IV summary of results, Annex V layperson summary, and all documents registered in CTIS for this trial

Documents 8 files

Public protocol annexes, IB summaries, regulatory submissions and post-authorisation documents registered in CTIS.

TypeTitleVersion
Protocol (for publication) Protocol v1.1 16.09.2025_redacted 1.1
Recruitment arrangements (for publication) Template Informed consent and patient recruitment procedure 1
Subject information and informed consent form (for publication) ICF v1 del 2406 1
Subject information and informed consent form (for publication) Privacy V1 1
Summary of Product Characteristics (SmPC) (for publication) RCP_PIFELTRO 1
Summary of Product Characteristics (SmPC) (for publication) SmPC Pifeltro_EN 1
Synopsis of the protocol (for publication) SinossiIT_v1.1 16.09.2025_clean 1.1
Synopsis of the protocol (for publication) Synopsis_EN_v1.1 16.09.2025_clean 1.1

Application history

2 submissions — initial application plus substantial / non-substantial modifications

#TypeCodeSubmittedReference MSConclusionDecision date
1 INITIAL IN 2025-07-17 Italy Acceptable
2025-10-15
2025-10-24
2 NON SUBSTANTIAL MODIFICATION NSM-1 2026-03-05 Italy Acceptable
2025-10-15
2026-03-05