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The Safety of Anti-viral Therapy in Preventing HBV MTCT in Pregnant Women After Discontinuation

27 agosto 2018 aggiornato da: Chao-Shuang Lin, Third Affiliated Hospital, Sun Yat-Sen University

The Safety of Anti-viral Therapy in Preventing Mother-to-child Transmission of Hepatitis B Virus in Pregnant Women After Discontinuation

Mother-to-child transmission (MTCT) is the most common mode of perpetuating chronic hepatitis B virus (HBV) infection in endemic countries. Many studies have demonstrated antepartum anti-viral therapy (AVT) is a advisable option to reduce mother-to-child transmission and the risk of vaccination breakthrough in infants who received passive-active immunoprophylaxis. However, several controversies over antiviral treatment have not been resolved, that is, optimal duration, effect of postpartum therapy, and risk of postpartum alanine aminotransferase (ALT) flare after withdrawal. Will the risk of postpartum hepatitis flares increase after short-term AVT in late pregnancy for maternal HBV infection is discontinued? Is there any correlation between postpartum hepatitis flares and withdrawal time? Will the proportion of postpartum flares be reduced if extending the duration of AVT after delivery? There is an urgent need in this area. This study mainly investigated the safety of antiviral therapy in preventing HBV mother-to-child transmission in pregnant women after discontinuation.

Panoramica dello studio

Stato

Completato

Condizioni

Intervento / Trattamento

Descrizione dettagliata

Between June 2015 and December 2017, 111 mothers were enrolled during their visit to the Department of Gynecology and Obstetrics or the Department of Infectious Diseases of the Third Affiliated Hospital of Sun Yat-Sen University in Guangzhou, Guangdong province, China. Pregnant women fulfilling the inclusion and exclusion criteria were offered participation in the study. All pregnant women who opted for AVT need to sign a consent form and started on oral telbivudine (LDT) 600 mg or tenofovir disoproxil fumarate (TDF) 300 mg (as per patients' wishes) daily between gestational weeks 24 and 28. Serum levels of HBV DNA, HBsAg, HBsAb, HBeAg, HBeAb, liver function tests, haematology and renal biochemistry were measured at baseline(i.e. at screening), every 4 weeks after treatment begins, at the time of delivery, and at 1, 2, 3, 6, 12 month postpartum. After delivery, treatment with LDT or TDF was immediately withdrew to the patients with an intention of breastfeeding, while the other patients, without desire of breastfeeding, would subsequently extend antiviral treatment duration to postpartum 6 weeks. All infants were vaccinated with genetically engineered HBV vaccine 20 ug according to a standard vaccination regimen (i.e. within 12h of birth, at week 4 and at week 24) and 200 IU doses of hepatitis B immunoglobulin immediately (within 2h) after birth and at day 15. The infant's HBV serologic status and HBV DNA were tested at birth (before immunization) and again at 7 months. The investigators discussed the postpartum liver function after withdrawal and evaluated the impact of extending the postpartum duration of AVT administered for the prevention of perinatal transmission.

Tipo di studio

Interventistico

Iscrizione (Effettivo)

111

Fase

  • Fase 4

Criteri di partecipazione

I ricercatori cercano persone che corrispondano a una certa descrizione, chiamata criteri di ammissibilità. Alcuni esempi di questi criteri sono le condizioni generali di salute di una persona o trattamenti precedenti.

Criteri di ammissibilità

Età idonea allo studio

Da 18 anni a 45 anni (Adulto)

Accetta volontari sani

No

Sessi ammissibili allo studio

Femmina

Descrizione

Inclusion Criteria:

  • Gestational age between 24 and 28 weeks
  • Detectable serum HBsAg at the Screening visit and at least 6 months prior
  • Serum HBV DNA level >1,000,000 IU/mL at Screening visit
  • Alanine aminotransferase (ALT) below the upper limit of normal (ULN; 40 IU/mL)

Exclusion Criteria:

  • Patient is co-infected with hepatitis A virus, hepatitis C virus, hepatitis delta virus, hepatitis E virus or HIV.
  • Patient has a history of antiviral treatment or concurrent treatment with immunomodulators, cytotoxic drugs, or steroids.
  • Patient has clinical signs of threatened miscarriage in early pregnancy.
  • Patient has evidence of hepatocellular carcinoma or cirrhosis.
  • Patient has evidence of fetal deformity by 3-dimensional ultrasound examination.
  • Patient has a husband infected with HBV.

Piano di studio

Questa sezione fornisce i dettagli del piano di studio, compreso il modo in cui lo studio è progettato e ciò che lo studio sta misurando.

Come è strutturato lo studio?

Dettagli di progettazione

  • Scopo principale: Prevenzione
  • Assegnazione: Non randomizzato
  • Modello interventistico: Assegnazione parallela
  • Mascheramento: Nessuno (etichetta aperta)

Armi e interventi

Gruppo di partecipanti / Arm
Intervento / Trattamento
Sperimentale: Early cessation
Pregnant mothers who opted for antiviral therapy would start on oral LDT 600 mg or TDF 300 mg (as per patients' wishes) daily between gestational weeks 24 and 28. Antiviral therapy was discontinued in intrapartum.
Droga: Telbivudine 600mg
Pregnant mothers who opted for antiviral therapy would start on oral LDT 600 mg daily between gestational weeks 24 and 28.
Altri nomi:
  • Sebivo
Droga: Tenofovir disoproxil fumarate 300mg
Pregnant mothers who opted for antiviral therapy would start on oral TDF 300 mg daily between gestational weeks 24 and 28.
Altri nomi:
  • Viread
Sperimentale: Late cessation
Pregnant mothers who opted for antiviral therapy would start on oral LDT 600 mg or TDF 300 mg (as per patients' wishes) daily between gestational weeks 24 and 28. After delivery, mothers ceased antiviral treatment at postpartum 6 weeks.
Droga: Telbivudine 600mg
Pregnant mothers who opted for antiviral therapy would start on oral LDT 600 mg daily between gestational weeks 24 and 28.
Altri nomi:
  • Sebivo
Droga: Tenofovir disoproxil fumarate 300mg
Pregnant mothers who opted for antiviral therapy would start on oral TDF 300 mg daily between gestational weeks 24 and 28.
Altri nomi:
  • Viread
Nessun intervento: Control
Eligible patients who refused antiviral therapy but consented to the study were assigned to the control arm.

Cosa sta misurando lo studio?

Misure di risultato primarie

Misura del risultato
Misura Descrizione
Lasso di tempo
Postpartum flare incidence
Lasso di tempo: From baseline to postpartum 12 months.
Time-to-event measures. Postpartum flare was defined as an alanine aminotransferase (ALT) rise to three times baseline level or five times ULN (40U/L) within 12 months post-delivery. Maternal would be recorded if postpartum flare occured. At the end of postpartum 12-month follow-up period, postpartum flare incidence was measured.
From baseline to postpartum 12 months.

Misure di risultato secondarie

Misura del risultato
Misura Descrizione
Lasso di tempo
Time of flare onset
Lasso di tempo: Baseline (i.e. at screening); at the time of delivery; at 1,2,3,6,12 month postpartum.
Time-to-event measures. Time of the onset of postpartum liver damage.
Baseline (i.e. at screening); at the time of delivery; at 1,2,3,6,12 month postpartum.
Proportion of severe flares
Lasso di tempo: Baseline (i.e. at screening); at the time of delivery; at 1,2,3,6,12 month postpartum.
As per protocol, ALT flares (>5 times baseline level or >10 times ULN) were considered severe adverse events (SAEs).
Baseline (i.e. at screening); at the time of delivery; at 1,2,3,6,12 month postpartum.
Peak ALT during flare
Lasso di tempo: Baseline (i.e. at screening); at the time of delivery; at 1,2,3,6,12 month postpartum.
Peak ALT during postpartum flare.
Baseline (i.e. at screening); at the time of delivery; at 1,2,3,6,12 month postpartum.
The rate of perinatal transmission
Lasso di tempo: 7 months after birth.
Perinatal transmission was established by detectable HBV DNA and HBsAg levels in the peripheral blood of infants at 7 months.
7 months after birth.
HBV kinetics in patients
Lasso di tempo: Baseline (i.e. at screening); at 4-week intervals after treatment was begun up to delivery; at the time of delivery; at 1,2,3,6,12 month postpartum.
Changes of HBV viral load in patients treated and not treated with antiviral agents.
Baseline (i.e. at screening); at 4-week intervals after treatment was begun up to delivery; at the time of delivery; at 1,2,3,6,12 month postpartum.
The liver function normalization rate
Lasso di tempo: Baseline (i.e. at screening); at 4-week intervals after treatment was begun up to delivery; at the time of delivery; at 1,2,3,6,12 month postpartum.
Normal liver function was defined as the value of ALT level lower 40U/L.
Baseline (i.e. at screening); at 4-week intervals after treatment was begun up to delivery; at the time of delivery; at 1,2,3,6,12 month postpartum.
Maternal HBsAg loss/seroconversion rate
Lasso di tempo: Baseline (i.e. at screening); at 4-week intervals after treatment was begun up to delivery; at the time of delivery; at 1,2,3,6,12 month postpartum.
Measurement of the proportion of maternal hepatitis B surface antigen loss and seroconversion.
Baseline (i.e. at screening); at 4-week intervals after treatment was begun up to delivery; at the time of delivery; at 1,2,3,6,12 month postpartum.
Incidence of perinatal and partum complications
Lasso di tempo: Baseline (i.e. at screening); at 4-week intervals after treatment was begun up to delivery; at the time of delivery; at 1,2,3,6,12 month postpartum.
Perinatal and partum complications included hypertensive disorders in pregnancy, gestational diabetes mellitus, fetal growth retardation, premature delivery, premature rupture of membrane, and postpartum hemorrhage.
Baseline (i.e. at screening); at 4-week intervals after treatment was begun up to delivery; at the time of delivery; at 1,2,3,6,12 month postpartum.
Birth height
Lasso di tempo: At the time of delivery.
Measurement of infants' height at the time of delivery.
At the time of delivery.
Birth weight
Lasso di tempo: At the time of delivery.
Measurement of infants' weight at the time of delivery.
At the time of delivery.
Neonate apgar score at 1 minute
Lasso di tempo: At 1 minute after birth.
Apgar scores of neonates included activity, pulse, grimace, appearance and respiration.
At 1 minute after birth.
Neonate apgar score at 5 minutes
Lasso di tempo: At 5 minutes after birth.
Apgar scores of neonates included activity, pulse, grimace, appearance and respiration.
At 5 minutes after birth.
Incidence of deformity
Lasso di tempo: At the time of delivery; at 1, 7, 12 month postpartum.
The incidence of baby deformity was recorded during the postpartum follow-up period.
At the time of delivery; at 1, 7, 12 month postpartum.
Breastfeeding rate
Lasso di tempo: At birth, at 1 and 7 month follow-up.
Breast feeding status was assessed in all infants during the postpartum follow-up period.
At birth, at 1 and 7 month follow-up.

Collaboratori e investigatori

Qui è dove troverai le persone e le organizzazioni coinvolte in questo studio.

Sponsor

Third Affiliated Hospital, Sun Yat-Sen University

Investigatori

  • Cattedra di studio: Zhi-liang Gao, PhD, Third Affiliated Hospital, Sun Yat-Sen University

Studiare le date dei record

Queste date tengono traccia dell'avanzamento della registrazione dello studio e dell'invio dei risultati di sintesi a ClinicalTrials.gov. I record degli studi e i risultati riportati vengono esaminati dalla National Library of Medicine (NLM) per assicurarsi che soddisfino specifici standard di controllo della qualità prima di essere pubblicati sul sito Web pubblico.

Studia le date principali

Inizio studio (Effettivo)

1 giugno 2015

Completamento primario (Effettivo)

31 dicembre 2017

Completamento dello studio (Effettivo)

31 dicembre 2017

Date di iscrizione allo studio

Primo inviato

21 gennaio 2018

Primo inviato che soddisfa i criteri di controllo qualità

12 marzo 2018

Primo Inserito (Effettivo)

19 marzo 2018

Aggiornamenti dei record di studio

Ultimo aggiornamento pubblicato (Effettivo)

29 agosto 2018

Ultimo aggiornamento inviato che soddisfa i criteri QC

27 agosto 2018

Ultimo verificato

1 agosto 2018

Maggiori informazioni

Termini relativi a questo studio

Parole chiave

Termini MeSH pertinenti aggiuntivi

Altri numeri di identificazione dello studio

  • Safety of anti-viral agents

Piano per i dati dei singoli partecipanti (IPD)

Hai intenzione di condividere i dati dei singoli partecipanti (IPD)?

NO

Descrizione del piano IPD

Individual participant data (IPD) is not available to other researchers.

Informazioni su farmaci e dispositivi, documenti di studio

Studia un prodotto farmaceutico regolamentato dalla FDA degli Stati Uniti

No

Studia un dispositivo regolamentato dalla FDA degli Stati Uniti

No

Queste informazioni sono state recuperate direttamente dal sito web clinicaltrials.gov senza alcuna modifica. In caso di richieste di modifica, rimozione o aggiornamento dei dettagli dello studio, contattare register@clinicaltrials.gov. Non appena verrà implementata una modifica su clinicaltrials.gov, questa verrà aggiornata automaticamente anche sul nostro sito web .

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Sedi

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