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Efficacy of Sofosbuvir as treatment for Yellow Fever

Efficacy of Sofosbuvir as treatment for Yellow Fever: randomized clinical trial (SOFFA trial) - SOFFA

Status
Recruiting
Phases
Unknown
Study type
Interventional
Source
REBEC
Registry ID
RBR-93dp9n
Enrollment
Unknown
Registered
2018-05-14
Start date
2018-03-05
Completion date
Unknown
Last updated
2025-10-27

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

Conditions

Yellow fever

Interventions

Regimen 1 - Intervention: 45 patients will receive Sofosbuvir 400 mg once a day per 10 days + clinical intervention at attending physician´s discretion Regimen 2 - Control: 45 patients will receive cl
Drug

Sponsors

Fundação Faculdade de Medicina
Lead Sponsor
Fundação Faculdade de Medicina
Collaborator

Eligibility

Age
18 Years to No maximum

Inclusion criteria

Inclusion criteria: Age above 18 years, admission in one of the recruiting centers, fever (axillary temperature above 37.8°C), coming from a risk region with epizootic or confirmed human cases (defined according to updated epidemiological bulletins), transaminases above 500 U/L.

Exclusion criteria

Exclusion criteria: amiodarone use in the last 72 hours, current pregnancy, women who do not accept interruption of breastfeeding, current use of sofosbuvir for hepatitis C treatment, negative RT-PCR for yellow fever, alternative diagnosis that justifies the symptoms on admission.

Design outcomes

Primary

MeasureTime frame
Reduction in the viral load of the yellow fever virus (blood), measured 72 hours after the randomization, tested by quantitative polymerase chain reaction. ;Time for polymerase chain reaction negativation. The polymerase chain reaction test will be collected each study visit until its negativation.

Secondary

MeasureTime frame
Attainment of clinical criteria for intensive care: AST or ALT >3000 U/L, RNI > 1.5, Platelets 1.2 mg/dL ou 50% increase in baseline creatinin), homorragy, encefalopathy over grade 1 or seizures. Those criteria will be assessed in the visits of the sutdy.;Liver transplantation. Assessed by the proportion of patients who were transplanted.;In-hospital mortality. Assessed by the proportion of patients who died during hospitalization.;Mortality within 60 days. Assessed by the proportion of patients who died during the first 60 studied days.

Countries

Brazil

Contacts

Public ContactClaudia Mello

Instituto de Infectologia Emílio Ribas

claudiamello@ymail.com+55-011-983019837

Outcome results

None listed

Source: REBEC (via WHO ICTRP) · Data processed: Feb 20, 2026