Acid-suppressing Drugs Pregnancy Asthma Offspring Study

April 3, 2015 updated by: AstraZeneca

A Cohort Study on the Association Between Acid-suppressing Drugs in Pregnancy and Asthma in the Offspring

The purpose of this study is

  1. To estimate the association between prenatal exposure to proton pump inhibitors (PPIs) and the risk of asthma during childhood.
  2. To estimate the association between prenatal exposure to H2-receptor antagonists (H2RAs) and the risk of asthma during childhood.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

A cohort study on the association between acid-suppressing drugs in pregnancy and asthma in the offspring

Study Type

Observational

Enrollment (Actual)

10116

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Spain
      • Madrid, Spain
        • Research Site

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Child
  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Genders Eligible for Study

Female

Sampling Method

Non-Probability Sample

Study Population

All women aged 18-45 years and with at least one pregnancy between 1 January 1995 and 31 December 2010 who have been enrolled with their PCP (Primary Care Physician) for at least 1 year and have had a health contact in the year prior to the last menstrual period (LMP) of the respective pregnancy. The final study population will include pregnancies that can be unequivocally linked with live birth(s) and only the first pregnancy ascertained during the study period for each woman will be retained

Description

Inclusion Criteria:

- Females aged 18-45 years with at least one pregnancy between 1 January 1995 - 31 December 2010 (see study population description)

Exclusion Criteria:

- Males, females below age 18 and 45 years and above (see study population description)

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

Cohorts and Interventions

Group / Cohort
Intervention / Treatment
All women exposed to PPI at any time during pregnancy
Exposure to PPI defined as presence of at least one prescription of a PPI any time between last menstrual period and delievry date
Drug: Risk of asthma in offspring

Exposure to PPI or H2RA, respectively during pregnancy

No exposure to acid suppressing drugs during pregnancy
All women exposed to H2RA at any time during pregnancy
Exposure to H2RA defined as presence of at least one prescription of H2RA any time between last menstrual period and delivery date
Drug: Risk of asthma in offspring

Exposure to PPI or H2RA, respectively during pregnancy

No exposure to acid suppressing drugs during pregnancy
Pregnant women with no recorded use of acid suppressing drugs
Pregnant women with no recorded use of acid suppressing drugs at any time during pregnancy

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Relative risk of first asthma diagnosis associated with prenatal exposure to proton pump inhibitors
Time Frame: From 1 January 2005 till 31 December 2010, an expected average of 5 years.
From 1 January 2005 till 31 December 2010, an expected average of 5 years.
Relative risk of first asthma diagnosis associated with prenatal exposure to histamine-2 receptor antagonists
Time Frame: From 1 January 2005 till 31 December 2010, an expected average of 5 years
From 1 January 2005 till 31 December 2010, an expected average of 5 years

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

AstraZeneca

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

June 1, 2012

Primary Completion (Actual)

December 1, 2014

Study Completion (Actual)

December 1, 2014

Study Registration Dates

First Submitted

February 6, 2013

First Submitted That Met QC Criteria

February 6, 2013

First Posted (Estimate)

February 8, 2013

Study Record Updates

Last Update Posted (Estimate)

April 6, 2015

Last Update Submitted That Met QC Criteria

April 3, 2015

Last Verified

April 1, 2015

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • D9612N00018

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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