ClinicalTrials.gg
CompletedNCT00595205Updated Mar 19, 2012

Intussusception Surveillance After Rotarix Introduction in Mexico

An observational study in Intussusception (IS) and Rotavirus Vaccines, sponsored by GlaxoSmithKline. Completed at 1 site in Mexico. Open to participants aged Up to 364 Days. Per ClinicalTrials.gov, last updated 2012-03-19.

Sponsored by GlaxoSmithKline · Observational

Study type
Observational
Time perspective
Prospective
Enrollment
786
Ages
Up to 364 Days
Sex
All
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Study summary

GSK Biologicals' rotavirus vaccine, Rotarix™ has been recommended for universal use targeting infants through the Expanded Program on Immunization (EPI) in Mexico. This protocol describes a Phase IV safety study in Mexico designed to further evaluate the safety profile of Rotarix™ with regard to intussusception (IS). The data generated by this study will be useful for public health officers and policy makers in confirming the safety profile of Rotarix™.

Read the detailed description

Rationale for amendment 3:

The findings from the first year of the implementation of the active surveillance showed that most Lower Respiratory Tract-Related Post-Neonatal (LRTI) Mortality cases could not be included into the study, because most of the grieving parents refused to participate in the study. The European Medicines Agency Marketing Authorization Holders (EMEA MAH) also generated a substantial amount of additional clinical and post-marketing safety data throughout the world, which clearly indicated the absence of any safety signal when considering the LTRI-related fatalities. Therefore surveillance for LRTI mortality cases was removed from the study design. The number of sites was reduced from approximately 230 to about 60 to 90 in order to reflect the above mentioned change that reduced the need for so many sites. Additionally, passive surveillance for IS cases through the IMSS database was not feasible, due to restrictions of the IMSS internal policies and to the current limitations in the databases linkage and structure abilities.

Lastly, SAEs reporting procedures had to be adjusted according to the Council for International Organizations of Medical Sciences (CIOMS) Working Group V, 2001 publication such that there will be no expedited safety reporting for this study.

Design This is a post marketing ,Phase IV, observational, prospective, self-controlled case series, vaccine safety study including: a) hospital-based surveillance to monitor for the occurrence of IS through active surveillance; b) a self-controlled case series (SCCS) design/analysis to assess the temporal association with Rotarix™ of the IS ascertained through active surveillance.

The aim of the active hospital-based surveillance system is to identify all definite IS cases in children younger than one year of age (children ineligible on day of first birthday) among IMSS members. Surveillance will be conducted in approximately 60 to 90 IMSS health facilities with pediatric surgery service.

Study participation for children fitting the surveillance case definition of IS will include parental/guardian/legal representative interview, as well as a review of medical charts and vaccination records. Additional medical information will be collected through medical record review during hospitalization and after the child has been discharged.

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Conditions studied

  • Intussusception (IS)
  • Rotavirus Vaccines

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Keywords

  • vaccination
  • intussusception
  • Rotavirus
  • vaccine
03

In context

Intussusception

31 studies on the registry are indexed under Intussusception; 6 are open to participants now.

This study's enrollment of 786 is above the median of 250 across 15 observational studies indexed under Intussusception.

Browse Intussusception studies →

Lead sponsor

GlaxoSmithKline is the lead sponsor of 3,650 studies on the registry; 118 are open to participants now.

Of its 264 completed or terminated interventional studies of FDA-regulated products, 241 (91%) have results posted.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
Up to 364 Days
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Non-probability sample

Study population

All eligible children \< 1 year of age (children ineligible on day of first birthday) who are/have been treated at one of the study hospitals/medical facilities with definite intussusception.

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

A child's clinical episode will be defined as an IS case and deemed eligible for the study if he/she meets the following criteria:

  • Subject is an IMSS affiliate
  • Subject is being treated/has been treated/has been referred for treatment at one of the IMSS hospitals/medical facilities with IS during the study period.
  • Male or female child is \<one year of age at the time of diagnosis of the IS (child becomes ineligible on the day of their first birthday)
  • Subject is diagnosed with definite IS based on the Brighton criteria
  • Written is obtained from the parent/guardian/legal representative of the subject Subjects meeting the above criteria will be eligible for inclusion in this study regardless of whether or not the subject has had a radiographically or surgically confirmed case of IS prior to the current episode.

Exclusion criteria

Exclusion Criteria:

Not applicable

Terms in these criteria, in plain language(1)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

05

Study design

Time perspective
Prospective
Enrollment
786 participants (actual)

Groups and cohorts

  • Group IS

    Subjects \<1 year of age with definite intussusception cases who had received Rotarix™.

    Other: Hospital log review.

Interventions

  • OtherHospital log review.

    Reviewing of the hospital log to monitor for the occurrence of intussusception.

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What researchers measure

Primary outcomes

  1. Occurrence of definite IS episodes within Day 0 to Day 30 following vaccination

    Time frame: 0- 30 days following Rotarix vaccination

Secondary outcomes

  1. Occurrence of definite IS episodes within Day 0 to Day 15 following vaccination

    Time frame: Day 0 to Day 15 post Rotarix vaccination

  2. Yearly occurrence of definite IS episodes (regardless of vaccination status)

    Time frame: Assessed for the interim analysis and after study conclusion

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Study locations

1 site
  • GSK Investigational Site
    Mexico Df, 06720, Mexico
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References and documents

Publications

  • Velázquez FR et al. Postmarketing surveillance to assess risk of intussusception following introduction of the G1P[8] human rotavirus vaccine in Mexico. Abstract presented at the Excellence in Paediatrics (EXPE). London, UK, 2-4 December 2010.
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Timeline

Tracking since Sep 25, 2026
Not marked actual or estimatedDates not marked actual or estimated

The record gives a start of Jan 2008, a primary completion of Oct 2010 and a completion of Oct 2010. It does not say whether these dates are actual or estimated.

How these figures are worked out, and which studies are left out of them.

Registered
Jan 4, 2008
First posted
Jan 16, 2008
Start
Jan 2008
Primary completionActual
Oct 2010
CompletionActual
Oct 2010
Last update
Mar 19, 2012
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Mar 19, 2012, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT00595205
Lead sponsor
GlaxoSmithKline
Responsible party
Sponsor
First posted
Jan 16, 2008
Start date
Jan 2008
Primary completion
Oct 2010
Completion
Oct 2010
Last update
Mar 19, 2012

Study contacts

GSK Clinical Trials
study director · GlaxoSmithKline
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Feb 2011. You cannot join it, but the record below documents what was studied.

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