This site became the new on June 19th. Learn more.
Show more Menu IMPORTANT: Listing of a study on this site does not reflect endorsement by the National Institutes of Health. Talk with a trusted healthcare professional before volunteering for a study. Read more... Menu IMPORTANT: Talk with a trusted healthcare professional before volunteering for a study. Read more... Menu
Give us feedback

Unexplained Infertility Among Asthmatic and Atopic Patients

The recruitment status of this study is unknown. The completion date has passed and the status has not been verified in more than two years.
Verified February 2013 by Elisabeth Juul Gade, Bispebjerg Hospital.
Recruitment status was:  Recruiting
Danish Medical Association
Information provided by (Responsible Party):
Elisabeth Juul Gade, Bispebjerg Hospital Identifier:
First received: February 8, 2013
Last updated: NA
Last verified: February 2013
History: No changes posted

Unexplained infertility is defined as the lack of thec ability to become pregnant during the first year, although the periods of the woman, the semen from the man and the laparoscopic findings are normal. In Denmark do roughly every fifth to seven couple in the fertile age have problems becoming pregnant for a various kind of reasons, of these are 10-15 % unexplained infertile.

Many factors are pointed out as imported. In particularly lifestyle factors such as the diet, smocking, obesity, lack of physic activity and alcohol. The causal connection is yet to be found, but it is assumed that there is a link between infertility and endocrine, neurological and immunological factors.

Asthma and allergy are some of the most common diseases among young people in western world .The development of these diseases are caused by both hereditary factors, and factors that also seem to be important in infertility.

It is clinically observed that many unexplained infertile patients simultaneously suffer from asthma and allergy. Furthermore this group of patients seems harder to treat in terms of becoming pregnant during fertility treatment then healthy not asthmatic and non allergic persons.

There is limited available data about this subject and the data that is already collected does not show a clear tendency.

Hypothesis: Atopic asthma is characterized by a systemic inflammation and can therefore be the reason for infertility among this group of patients.

The aim:

The aim of this study is to examine whether female asthmatics and allergic are less fertile then healthy females- whether there is there a link between asthma and infertility. Furthermore if an optimal asthma treatment during fertility treatment reduces time to pregnancy.

Atopics Unexplained Infertility

Study Type: Observational
Study Design: Observational Model: Cohort
Time Perspective: Prospective
Official Title: Unexplained Infertility Among Asthmatic and Atopic Patients

Resource links provided by NLM:

Further study details as provided by Elisabeth Juul Gade, Bispebjerg Hospital:

Primary Outcome Measures:
  • Time to pregnancy [ Time Frame: 12 month ]

Biospecimen Retention:   Samples Without DNA
whole blod, serum

Estimated Enrollment: 396
Study Start Date: December 2011
Estimated Study Completion Date: October 2014
Estimated Primary Completion Date: December 2013 (Final data collection date for primary outcome measure)
  Show Detailed Description


Ages Eligible for Study:   18 Years to 45 Years   (Adult)
Sexes Eligible for Study:   Female
Accepts Healthy Volunteers:   Yes
Sampling Method:   Probability Sample
Study Population
young healthy wemon that are unexplained infetile and have asthma, atopic ezcema or allergy

Inclusion Criteria:

  • unexplained infertile

Exclusion Criteria:

  • no other diseases of the lung then asthma
  • non- smoking
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT01788735

Respiratory Research Unit, Bispebjer Hospital Recruiting
Copenhagen, Denmark, 2400
Contact: Elisabeth Juul Gade, M.D    +4526149695   
Sponsors and Collaborators
Elisabeth Juul Gade
Danish Medical Association
Principal Investigator: Vibeke Backer, Professor Bispebjerg Hospital
  More Information

Publications automatically indexed to this study by Identifier (NCT Number):
Responsible Party: Elisabeth Juul Gade, MD, Bispebjerg Hospital Identifier: NCT01788735     History of Changes
Other Study ID Numbers: AF
Study First Received: February 8, 2013
Last Updated: February 8, 2013

Keywords provided by Elisabeth Juul Gade, Bispebjerg Hospital:
unexplained infertility

Additional relevant MeSH terms:
Genital Diseases, Male
Genital Diseases, Female processed this record on September 18, 2017