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A Study in Adolescent Females to Explore Cytomegalovirus Infection

1 апреля 2021 г. обновлено: GlaxoSmithKline
The purpose of this study is to estimate the incidence of Cytomegalovirus (CMV) secondary infections (re-infections/re-activations) and the incidence of CMV primary infections in adolescent females.

Обзор исследования

Тип исследования

Интервенционный

Регистрация (Действительный)

369

Фаза

  • Непригодный

Контакты и местонахождение

В этом разделе приведены контактные данные лиц, проводящих исследование, и информация о том, где проводится это исследование.

Места учебы

    • Morelos
      • Jojutla, Morelos, Мексика, 62900
        • GSK Investigational Site
    • Alabama
      • Birmingham, Alabama, Соединенные Штаты, 35233
        • GSK Investigational Site
    • Michigan
      • Stevensville, Michigan, Соединенные Штаты, 49127
        • GSK Investigational Site
      • Helsinki, Финляндия, 00260
        • GSK Investigational Site
      • Oulu, Финляндия, 90220
        • GSK Investigational Site

Критерии участия

Исследователи ищут людей, которые соответствуют определенному описанию, называемому критериям приемлемости. Некоторыми примерами этих критериев являются общее состояние здоровья человека или предшествующее лечение.

Критерии приемлемости

Возраст, подходящий для обучения

От 10 лет до 17 лет (Ребенок)

Принимает здоровых добровольцев

Нет

Полы, имеющие право на обучение

Женский

Описание

Inclusion Criteria:

  • A female adolescent between, and including 10 and 17 years at the time of enrolment regardless of pregnancy status and contraception method used or not used.
  • Subjects who the investigator believes that the subject and/or the subject's parent(s)/Legally Acceptable Representative(s) (LAR[s]) can and will comply with the requirements of the protocol.
  • Written informed assent and/or consent obtained from the subject and/or the parent(s)/LAR(s) of the subject.
  • Subject is likely to remain in the area and/or return for required study Site Visits and complete Sample Collection Visits.

Exclusion Criteria:

  • Child in care.
  • Use or planned use of any investigational or non-registered antiviral drug or vaccine during the study period.
  • Known medical history of any recurrent clinical herpes episodes requiring episodic or chronic suppressive treatment with oral or parenteral antiviral treatment such as acyclovir, famciclovir, valacyclovir or any other anti-herpes virus anti-viral during the year preceding enrolment. Topical anti-viral are allowed.
  • Subjects with history of previous vaccination against CMV.
  • Chronic administration of immunosuppressants or other immune-modifying drugs within 6 months prior to Visit 1 or planned administration during the study. Inhaled and topical steroids are allowed.
  • Administration of immunoglobulins and/or any blood products within 3 months prior to Visit 1 or planned administration during the study.
  • Any confirmed or suspected immunosuppressive or immunodeficient condition including HIV-infection, based on medical history and physical examination (no laboratory testing required).
  • Any major congenital defects, serious chronic illness or organ transplantation.

Учебный план

В этом разделе представлена ​​подробная информация о плане исследования, в том числе о том, как планируется исследование и что оно измеряет.

Как устроено исследование?

Детали дизайна

  • Основная цель: Скрининг
  • Распределение: Нерандомизированный
  • Интервенционная модель: Параллельное назначение
  • Маскировка: Нет (открытая этикетка)

Оружие и интервенции

Группа участников / Армия
Вмешательство/лечение
Экспериментальный: Group S+
Cytomegalovirus (CMV) seropositive subjects aged between 10-17 years at enrollment in the study.
Samples collected at Months 0, 4, 8, 12, 16, 20, 24, 28, 32, and 36.
Samples collected at Months 0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, and 36.
Samples collected at Months 0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, and 36.
Экспериментальный: Group S-
Cytomegalovirus (CMV) seronegative subjects aged between 10-17 years at enrollment in the study.
Samples collected at Months 0, 4, 8, 12, 16, 20, 24, 28, 32, and 36.
Samples collected at Months 0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, and 36.
Samples collected at Months 0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, and 36.
Экспериментальный: Missing serostatus Group
Subjects with no confirmed serostatus, aged between 10-17 years at enrollment in the study.
Samples collected at Months 0, 4, 8, 12, 16, 20, 24, 28, 32, and 36.
Samples collected at Months 0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, and 36.
Samples collected at Months 0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, and 36.

Что измеряет исследование?

Первичные показатели результатов

Мера результата
Мера Описание
Временное ограничение
Number of CMV Seropositive Subjects With Appearance or Increase of Anti-CMV Tegument Protein IgG Antibodies in Serum.
Временное ограничение: At Month 4
This outcome was part of the assessment of occurrence of CMV secondary infections determined in all seropositive subjects. Two-fold and above increases" category = subjects that had two-fold and above increases of anti-CMV Immunoglobulin G (IgG) concentration. "Four-fold and above increases" = subjects that had four-fold and above increases of anti-CMV IgG concentration. The cut-off of the assay = 1.136 ELISA unit (EU)/mL. A seropositive subject is a subject for whom anti-CMV IgG antibodies were detected in serum sample collected at Month 0. CMV secondary infections are defined as either a viral reactivation or a re-infection with a new strain of CMV.
At Month 4
Number of CMV Seropositive Subjects With Appearance or Increase of Anti-CMV Tegument Protein IgG Antibodies in Serum.
Временное ограничение: At Month 8
This outcome was part of the assessment of occurrence of CMV secondary infections determined in all seropositive subjects. Two-fold and above increases" category = subjects that had two-fold and above increases of anti-CMV IgG concentration. "Four-fold and above increases" = subjects that had four-fold and above increases of anti-CMV IgG concentration. The cut-off of the assay = 1.136 ELISA unit (EU)/mL. A seropositive subject is a subject for whom anti-CMV IgG antibodies were detected in serum sample collected at Month 0. CMV secondary infections are defined as either a viral reactivation or a re-infection with a new strain of CMV.
At Month 8
Number of CMV Seropositive Subjects With Appearance or Increase of Anti-CMV Tegument Protein IgG Antibodies in Serum.
Временное ограничение: At Month 12
This outcome was part of the assessment of occurrence of CMV secondary infections determined in all seropositive subjects. Two-fold and above increases" category = subjects that had two-fold and above increases of anti-CMV IgG concentration. "Four-fold and above increases" = subjects that had four-fold and above increases of anti-CMV IgG concentration. The cut-off of the assay = 1.136 ELISA unit (EU)/mL. A seropositive subject is a subject for whom anti-CMV IgG antibodies were detected in serum sample collected at Month 0. CMV secondary infections are defined as either a viral reactivation or a re-infection with a new strain of CMV.
At Month 12
Number of CMV Seropositive Subjects With Appearance or Increase of Anti-CMV Tegument Protein IgG Antibodies in Serum.
Временное ограничение: At Month 16
This outcome was part of the assessment of occurrence of CMV secondary infections determined in all seropositive subjects. Two-fold and above increases" category = subjects that had two-fold and above increases of anti-CMV IgG concentration. "Four-fold and above increases" = subjects that had four-fold and above increases of anti-CMV IgG concentration. The cut-off of the assay = 1.136 ELISA unit (EU)/mL. A seropositive subject is a subject for whom anti-CMV IgG antibodies were detected in serum sample collected at Month 0. CMV secondary infections are defined as either a viral reactivation or a re-infection with a new strain of CMV.
At Month 16
Number of CMV Seropositive Subjects With Appearance or Increase of Anti-CMV Tegument Protein IgG Antibodies in Serum.
Временное ограничение: At Month 20
This outcome was part of the assessment of occurrence of CMV secondary infections determined in all seropositive subjects. Two-fold and above increases" category = subjects that had two-fold and above increases of anti-CMV IgG concentration. "Four-fold and above increases" = subjects that had four-fold and above increases of anti-CMV IgG concentration. The cut-off of the assay = 1.136 ELISA unit (EU)/mL. A seropositive subject is a subject for whom anti-CMV IgG antibodies were detected in serum sample collected at Month 0. CMV secondary infections are defined as either a viral reactivation or a re-infection with a new strain of CMV.
At Month 20
Number of CMV Seropositive Subjects With Appearance or Increase of Anti-CMV Tegument Protein IgG Antibodies in Serum.
Временное ограничение: At Month 24
This outcome was part of the assessment of occurrence of CMV secondary infections determined in all seropositive subjects. Two-fold and above increases" category = subjects that had two-fold and above increases of anti-CMV IgG concentration. "Four-fold and above increases" = subjects that had four-fold and above increases of anti-CMV IgG concentration. The cut-off of the assay = 1.136 ELISA unit (EU)/mL. A seropositive subject is a subject for whom anti-CMV IgG antibodies were detected in serum sample collected at Month 0. CMV secondary infections are defined as either a viral reactivation or a re-infection with a new strain of CMV.
At Month 24
Number of CMV Seropositive Subjects With Appearance or Increase of Anti-CMV Tegument Protein IgG Antibodies in Serum.
Временное ограничение: At Month 28
This outcome was part of the assessment of occurrence of CMV secondary infections determined in all seropositive subjects. Two-fold and above increases" category = subjects that had two-fold and above increases of anti-CMV IgG concentration. "Four-fold and above increases" = subjects that had four-fold and above increases of anti-CMV IgG concentration. The cut-off of the assay = 1.136 ELISA unit (EU)/mL. A seropositive subject is a subject for whom anti-CMV IgG antibodies were detected in serum sample collected at Month 0. CMV secondary infections are defined as either a viral reactivation or a re-infection with a new strain of CMV.
At Month 28
Number of CMV Seropositive Subjects With Appearance or Increase of Anti-CMV Tegument Protein IgG Antibodies in Serum.
Временное ограничение: At Month 32
This outcome was part of the assessment of occurrence of CMV secondary infections determined in all seropositive subjects. Two-fold and above increases" category = subjects that had two-fold and above increases of anti-CMV IgG concentration. "Four-fold and above increases" = subjects that had four-fold and above increases of anti-CMV IgG concentration. The cut-off of the assay = 1.136 ELISA unit (EU)/mL. A seropositive subject is a subject for whom anti-CMV IgG antibodies were detected in serum sample collected at Month 0. CMV secondary infections are defined as either a viral reactivation or a re-infection with a new strain of CMV.
At Month 32
Number of CMV Seropositive Subjects With Appearance or Increase of Anti-CMV Tegument Protein IgG Antibodies in Serum.
Временное ограничение: At Month 36
This outcome was part of the assessment of occurrence of CMV secondary infections determined in all seropositive subjects. Two-fold and above increases" category = subjects that had two-fold and above increases of anti-CMV IgG concentration. "Four-fold and above increases" = subjects that had four-fold and above increases of anti-CMV IgG concentration. The cut-off of the assay = 1.136 ELISA unit (EU)/mL. A seropositive subject is a subject for whom anti-CMV IgG antibodies were detected in serum sample collected at Month 0. CMV secondary infections are defined as either a viral reactivation or a re-infection with a new strain of CMV.
At Month 36
Anti-CMV Tegument Protein IgG Antibody Concentration in Serum (ELISA).
Временное ограничение: At Month 0
This outcome was part of the assessment of occurrence of CMV secondary infections determined in all seropositive subjects. A seropositive subject is a subject for whom anti-CMV IgG antibodies were detected in serum sample collected at Month 0. CMV secondary infections are defined as either a viral reactivation or a re-infection with a new strain of CMV. Antibody concentrations were tabulated as geometric mean concentrations (GMC) and expressed as ELISA units (EU)/mL. The cut-off of the assay = 1.136 EU/mL.
At Month 0
Anti-CMV Tegument Protein IgG Antibody Concentration in Serum (ELISA).
Временное ограничение: At Month 4
This outcome was part of the assessment of occurrence of CMV secondary infections determined in all seropositive subjects. A seropositive subject is a subject for whom anti-CMV IgG antibodies were detected in serum sample collected at Month 0. CMV secondary infections are defined as either a viral reactivation or a re-infection with a new strain of CMV. Antibody concentrations were tabulated as geometric mean concentrations (GMC) and expressed as ELISA units (EU)/mL. The cut-off of the assay = 1.136 EU/mL. GMC was calculated on subjects meeting a two-fold increase or above (i.e.: subjects that had two-fold and above increases [including four-fold] of CMV anti-tegument IgG compared with previous time point).
At Month 4
Anti-CMV Tegument Protein IgG Antibody Concentration in Serum (ELISA).
Временное ограничение: At Month 8
This outcome was part of the assessment of occurrence of CMV secondary infections determined in all seropositive subjects. A seropositive subject is a subject for whom anti-CMV IgG antibodies were detected in serum sample collected at Month 0. CMV secondary infections are defined as either a viral reactivation or a re-infection with a new strain of CMV. Antibody concentrations were tabulated as geometric mean concentrations (GMC) and expressed as ELISA units (EU)/mL. The cut-off of the assay = 1.136 EU/mL. GMC was calculated on subjects meeting a two-fold increase or above (i.e.: subjects that had two-fold and above increases [including four-fold] of CMV anti-tegument IgG compared with previous time point).
At Month 8
Anti-CMV Tegument Protein IgG Antibody Concentration in Serum (ELISA).
Временное ограничение: At Month 12
This outcome was part of the assessment of occurrence of CMV secondary infections determined in all seropositive subjects. A seropositive subject is a subject for whom anti-CMV IgG antibodies were detected in serum sample collected at Month 0. CMV secondary infections are defined as either a viral reactivation or a re-infection with a new strain of CMV. Antibody concentrations were tabulated as geometric mean concentrations (GMC) and expressed as ELISA units (EU)/mL. The cut-off of the assay = 1.136 EU/mL. GMC was calculated on subjects meeting a two-fold increase or above (i.e.: subjects that had two-fold and above increases [including four-fold] of CMV anti-tegument IgG compared with previous time point).
At Month 12
Anti-CMV Tegument Protein IgG Antibody Concentration in Serum (ELISA).
Временное ограничение: At Month 16
This outcome was part of the assessment of occurrence of CMV secondary infections determined in all seropositive subjects. A seropositive subject is a subject for whom anti-CMV IgG antibodies were detected in serum sample collected at Month 0. CMV secondary infections are defined as either a viral reactivation or a re-infection with a new strain of CMV. Antibody concentrations were tabulated as geometric mean concentrations (GMC) and expressed as ELISA units (EU)/mL. The cut-off of the assay = 1.136 EU/mL. GMC was calculated on subjects meeting a two-fold increase or above (i.e.: subjects that had two-fold and above increases [including four-fold] of CMV anti-tegument IgG compared with previous time point).
At Month 16
Anti-CMV Tegument Protein IgG Antibody Concentration in Serum (ELISA).
Временное ограничение: At Month 20
This outcome was part of the assessment of occurrence of CMV secondary infections determined in all seropositive subjects. A seropositive subject is a subject for whom anti-CMV IgG antibodies were detected in serum sample collected at Month 0. CMV secondary infections are defined as either a viral reactivation or a re-infection with a new strain of CMV. Antibody concentrations were tabulated as geometric mean concentrations (GMC) and expressed as ELISA units (EU)/mL. The cut-off of the assay = 1.136 EU/mL. GMC was calculated on subjects meeting a two-fold increase or above (i.e.: subjects that had two-fold and above increases [including four-fold] of CMV anti-tegument IgG compared with previous time point).
At Month 20
Anti-CMV Tegument Protein IgG Antibody Concentration in Serum (ELISA).
Временное ограничение: At Month 24
This outcome was part of the assessment of occurrence of CMV secondary infections determined in all seropositive subjects. A seropositive subject is a subject for whom anti-CMV IgG antibodies were detected in serum sample collected at Month 0. CMV secondary infections are defined as either a viral reactivation or a re-infection with a new strain of CMV. Antibody concentrations were tabulated as geometric mean concentrations (GMC) and expressed as ELISA units (EU)/mL. The cut-off of the assay = 1.136 EU/mL. GMC was calculated on subjects meeting a two-fold increase or above (i.e.: subjects that had two-fold and above increases [including four-fold] of CMV anti-tegument IgG compared with previous time point).
At Month 24
Anti-CMV Tegument Protein IgG Antibody Concentration in Serum (ELISA).
Временное ограничение: At Month 28
This outcome was part of the assessment of occurrence of CMV secondary infections determined in all seropositive subjects. A seropositive subject is a subject for whom anti-CMV IgG antibodies were detected in serum sample collected at Month 0. CMV secondary infections are defined as either a viral reactivation or a re-infection with a new strain of CMV. Antibody concentrations were tabulated as geometric mean concentrations (GMC) and expressed as ELISA units (EU)/mL. The cut-off of the assay = 1.136 EU/mL. GMC was calculated on subjects meeting a two-fold increase or above (i.e.: subjects that had two-fold and above increases [including four-fold] of CMV anti-tegument IgG compared with previous time point)
At Month 28
Anti-CMV Tegument Protein IgG Antibody Concentration in Serum (ELISA).
Временное ограничение: At Month 32
This outcome was part of the assessment of occurrence of CMV secondary infections determined in all seropositive subjects. A seropositive subject is a subject for whom anti-CMV IgG antibodies were detected in serum sample collected at Month 0. CMV secondary infections are defined as either a viral reactivation or a re-infection with a new strain of CMV. Antibody concentrations were tabulated as geometric mean concentrations (GMC) and expressed as ELISA units (EU)/mL. The cut-off of the assay = 1.136 EU/mL. GMC was calculated on subjects meeting a two-fold increase or above (i.e.: subjects that had two-fold and above increases [including four-fold] of CMV anti-tegument IgG compared with previous time point).
At Month 32
Anti-CMV Tegument Protein IgG Antibody Concentration in Serum (ELISA).
Временное ограничение: At Month 36
This outcome was part of the assessment of occurrence of CMV secondary infections determined in all seropositive subjects. A seropositive subject is a subject for whom anti-CMV IgG antibodies were detected in serum sample collected at Month 0. CMV secondary infections are defined as either a viral reactivation or a re-infection with a new strain of CMV. Antibody concentrations were tabulated as geometric mean concentrations (GMC) and expressed as ELISA units (EU)/mL. The cut-off of the assay = 1.136 EU/mL. GMC was calculated on subjects meeting a two-fold increase or above (i.e.: subjects that had two-fold and above increases [including four-fold] of CMV anti-tegument IgG compared with previous time point).
At Month 36
Geometric Mean CMVpp65 Antibody Concentration in Subjects Based on Number of CMV Deoxyribonucleic Acid (DNA) Copies (pp65 Gene) in Urine
Временное ограничение: At Month 4
This outcome was part of the assessment of occurrence of CMV secondary infections determined in all seropositive subjects. The concentration of DNA copies was assessed by quantitative Polymerase Chain Reaction (qPCR), for CMV seropositive subjects with appearance of CMV DNA (>0 copies/mL) and DNA copies=0 in prior urine sample (category="> 0 Copies/mL") and for CMV seropositive subjects with increase of CMV DNA (≥6720 copies/mL) and 0<DNA copies <LLOQ (6720 copies/mL) in prior urine sample (category name= "≥6720 copies/mL").
At Month 4
Geometric Mean CMVpp65 Antibody Concentration in Subjects Based on Number of CMV DNA Copies (pp65 Gene) in Urine
Временное ограничение: At Month 8
This outcome was part of the assessment of occurrence of CMV secondary infections determined in all seropositive subjects. The concentration of DNA copies was assessed by quantitative Polymerase Chain Reaction (qPCR),for CMV seropositive subjects with appearance of CMV DNA (>0 copies/mL) and DNA copies=0 in prior urine sample (category="> 0 Copies/mL") and for CMV seropositive subjects with increase of CMV DNA (≥6720 copies/mL) and 0<DNA copies <LLOQ (6720 copies/mL) in prior urine sample (category name= "≥6720 copies/mL").
At Month 8
Geometric Mean CMVpp65 Antibody Concentration in Subjects Based on Number of CMV DNA Copies (pp65 Gene) in Urine
Временное ограничение: At Month 12
This outcome was part of the assessment of occurrence of CMV secondary infections determined in all seropositive subjects. The concentration of DNA copies was assessed by quantitative Polymerase Chain Reaction (qPCR),for CMV seropositive subjects with appearance of CMV DNA (>0 copies/mL) and DNA copies=0 in prior urine sample (category="> 0 Copies/mL").
At Month 12
Geometric Mean CMVpp65 Antibody Concentration in Subjects Based on Number of CMV DNA Copies (pp65 Gene) in Urine
Временное ограничение: At Month 16
This outcome was part of the assessment of occurrence of CMV secondary infections determined in all seropositive subjects. The concentration of DNA copies was assessed by quantitative Polymerase Chain Reaction (qPCR),for CMV seropositive subjects with appearance of CMV DNA (>0 copies/mL) and DNA copies=0 in prior urine sample (category="> 0 Copies/mL").
At Month 16
Geometric Mean CMVpp65 Antibody Concentration in Subjects Based on Number of CMV DNA Copies (pp65 Gene) in Urine
Временное ограничение: At Month 20
This outcome was part of the assessment of occurrence of CMV secondary infections determined in all seropositive subjects. The concentration of DNA copies was assessed by quantitative Polymerase Chain Reaction (qPCR),for CMV seropositive subjects with appearance of CMV DNA (>0 copies/mL) and DNA copies=0 in prior urine sample (category="> 0 Copies/mL").
At Month 20
Geometric Mean CMVpp65 Antibody Concentration in Subjects Based on Number of CMV DNA Copies (pp65 Gene) in Urine
Временное ограничение: At Month 24
This outcome was part of the assessment of occurrence of CMV secondary infections determined in all seropositive subjects. The concentration of DNA copies was assessed by quantitative Polymerase Chain Reaction (qPCR),for CMV seropositive subjects with appearance of CMV DNA (>0 copies/mL) and DNA copies=0 in prior urine sample (category="> 0 Copies/mL").
At Month 24
Geometric Mean CMVpp65 Antibody Concentration in Subjects Based on Number of CMV DNA Copies (pp65 Gene) in Urine
Временное ограничение: At Month 28
This outcome was part of the assessment of occurrence of CMV secondary infections determined in all seropositive subjects. The concentration of DNA copies was assessed by quantitative Polymerase Chain Reaction (qPCR),for CMV seropositive subjects with appearance of CMV DNA (>0 copies/mL) and DNA copies=0 in prior urine sample (category="> 0 Copies/mL") and for CMV seropositive subjects with increase of CMV DNA (≥6720 copies/mL) and 0<DNA copies <LLOQ (6720 copies/mL) in prior urine sample (category name= "≥6720 copies/mL").
At Month 28
Geometric Mean CMVpp65 Antibody Concentration in Subjects Based on Number of CMV DNA Copies (pp65 Gene) in Urine
Временное ограничение: At Month 32
This outcome was part of the assessment of occurrence of CMV secondary infections determined in all seropositive subjects. The concentration of DNA copies was assessed by quantitative Polymerase Chain Reaction (qPCR),for CMV seropositive subjects with appearance of CMV DNA (>0 copies/mL) and DNA copies=0 in prior urine sample (category="> 0 Copies/mL").
At Month 32
Geometric Mean CMVpp65 Antibody Concentration in Subjects Based on Number of CMV DNA Copies (pp65 Gene) in Urine
Временное ограничение: At Month 36
This outcome was part of the assessment of occurrence of CMV secondary infections determined in all seropositive subjects. The concentration of DNA copies was assessed by quantitative Polymerase Chain Reaction (qPCR),for CMV seropositive subjects with appearance of CMV DNA (>0 copies/mL) and DNA copies=0 in prior urine sample (category="> 0 Copies/mL").
At Month 36

Вторичные показатели результатов

Мера результата
Мера Описание
Временное ограничение
Number of CMV Seronegative Subjects With Appearance of Anti-CMV Tegument Protein IgG Antibodies in Serum.
Временное ограничение: From study Month 0 to Month 36
This outcome was part of the assessment of occurrence of CMV primary infections determined in all seronegative subjects, on samples collected during the 4-month site visits until study conclusion. A seronegative subject is a subject for whom anti-CMV IgG antibodies were not detected in serum sample collected at Month 0. CMV primary infection is defined as the first infection with CMV in subjects who were seronegative at enrollment.
From study Month 0 to Month 36
Anti-CMV Tegument Protein IgG Antibody Concentration of Seronegative Subjects
Временное ограничение: From study Month 0 to Month 36
This outcome is part of the assessment of occurrence of CMV primary infections determined in all seronegative subjects, on samples collected during the 4-month site visits until study conclusion. A seronegatve subject is a subject for whom anti-CMV IgG antibodies were not detected in serum sample collected at Month 0. CMV primary infection is defined as the first infection with CMV in subjects who were seronegative at enrollment. Antibody concentrations were tabulated as geometric mean concentrations (GMC) and expressed as ELISA units (EU)/mL. The cut-off of the assay = 1.136 EU/mL.
From study Month 0 to Month 36

Соавторы и исследователи

Здесь вы найдете людей и организации, участвующие в этом исследовании.

Спонсор

Даты записи исследования

Эти даты отслеживают ход отправки отчетов об исследованиях и сводных результатов на сайт ClinicalTrials.gov. Записи исследований и сообщаемые результаты проверяются Национальной медицинской библиотекой (NLM), чтобы убедиться, что они соответствуют определенным стандартам контроля качества, прежде чем публиковать их на общедоступном веб-сайте.

Изучение основных дат

Начало исследования (Действительный)

5 октября 2012 г.

Первичное завершение (Действительный)

8 апреля 2017 г.

Завершение исследования (Действительный)

8 апреля 2017 г.

Даты регистрации исследования

Первый отправленный

13 сентября 2012 г.

Впервые представлено, что соответствует критериям контроля качества

20 сентября 2012 г.

Первый опубликованный (Оценивать)

25 сентября 2012 г.

Обновления учебных записей

Последнее опубликованное обновление (Действительный)

27 апреля 2021 г.

Последнее отправленное обновление, отвечающее критериям контроля качества

1 апреля 2021 г.

Последняя проверка

1 марта 2021 г.

Дополнительная информация

Термины, связанные с этим исследованием

Планирование данных отдельных участников (IPD)

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Нет

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