Efficacy of Tenofovir Disoproxil on Mother-to-child Transmission of HBV in Tokombéré, Cameroon in Pregnant Women
TOPCHIB
Sponsor study identifier
interventional
150
1 country
1
Study Start
August 22, 2023
Actual (reported)Primary Completion
August 2027
EstimatedPlanned date reported by the registry; this milestone is not confirmed as achieved.
Study Completion
February 2028
EstimatedPlanned date reported by the registry; this milestone is not confirmed as achieved.
Pregnant women with HBeAg-positive viral hepatitis b or high viral load will receive Tenofovir disoproxil fumarate (TDF) from the 28th week of amenorrhoea until 6 weeks after delivery. Their newborns will receive the hepatitis B vaccine, starting with one dose at birth and followed by three booster doses, according to the Expanded Programme on Immunisation. The investigators hypothesise that a short course of TDF could greatly reduce the risk of HBV MTCT in pregnant women at high risk of MTCT (HBeAg positive or with high viral load).
Registry-reported information. Elapsed time and enrollment totals alone do not measure study progress or recruitment pace.
February 2028
EstimatedPlanned date reported by the registry; this milestone is not confirmed as achieved.
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Dates and qualifiers reported by the registry. Estimated dates do not confirm that a milestone has occurred.
May 23, 2022
Actual (reported)June 3, 2022
Actual (reported)August 22, 2023
Actual (reported)August 2027
EstimatedPlanned date reported by the registry; this milestone is not confirmed as achieved.
February 2028
EstimatedPlanned date reported by the registry; this milestone is not confirmed as achieved.
Proportion of children with HBsAg positive at 9-12 months of life (W36 - W48) in the study population,
Proportion of HBsAg-positive children between 9 and 12 months of age in the study population, assessed by an automated test (mini VIDAS)
measured between 36 and 48 weeks of life of the child of the mothers included in the study
Proportion of eligible women who accepted the intervention among eligible women offered the intervention (acceptance rate)
measured from 7 months of pregnancy to 8 weeks postpartum
Compliance with treatment
from 28 weeks of pregnancy to 8 weeks postpartum
Progression of viral load
measured from 24 weeks of pregnancy until the end of treatment
Estimate the protection rate of children with anti-HBs antibody level > 10 mIU/mL
measured between 36 and 48 weeks of life of the child of the mothers included in the study
Assess the clinical and biological tolerance of TDF administration in mothers and children
measured from 28 weeks of pregnancy until the end of treatment
Participants will be started on tenofovir disoproxil fumarate (TDF) 245 mg one tablet per day from week 28 of pregnancy until 6 weeks postpartum.
all participants receive the intervention
Hôpital Privé de Tokombéré
Tokonbéré, Cameroon
Jean-Pierre ADOUKARA, MD
Hôpital de Tokombéré
First Submitted
May 23, 2022
First Posted
June 3, 2022
Study Start
August 22, 2023
Actual (reported)Primary Completion
August 2027
EstimatedPlanned date reported by the registry; this milestone is not confirmed as achieved.
Contact the study team to confirm eligibility.
Study Completion
February 2028
EstimatedPlanned date reported by the registry; this milestone is not confirmed as achieved.
Last Updated
October 14, 2026
Record last verified: 2026-10
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Source: ClinicalTrials.gov.
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