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

Methods for Objective Selection of Competent Sperm (MACS)

This study has been completed.
Information provided by (Responsible Party):
Marcos Meseguer, Instituto Valenciano de Infertilidad, IVI VALENCIA Identifier:
First received: October 8, 2010
Last updated: August 4, 2014
Last verified: August 2014

In spite of the achievements and developement of the assisted reproduction techniques in the last years, there is still an elevated percentage of unsuccessful treatments, needing sometimes repeated attempts to reach pregnancy.

The molecular physiology of sperm is being better characterized, and some reports have demonstrated the implication of different molecular processes in the pathophysiology of male infertility.

Recently, different sperm selection methods have been based on these molecular differences, showing a better quality of the sperm population after selection.

The main objective of this research project is to clinically apply these techniques in order to increase the pregnancy rates per cycle in infertile couples attending assisted reproduction treatments.

Condition Intervention
Sperm Selection Other: Negative selection

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Triple (Participant, Care Provider, Outcomes Assessor)
Primary Purpose: Treatment

Further study details as provided by Marcos Meseguer, Instituto Valenciano de Infertilidad, IVI VALENCIA:

Primary Outcome Measures:
  • Gestation [ Time Frame: 14 days ]
    Sperm selection and blood sample confirming gestation

Enrollment: 237
Study Start Date: October 2010
Study Completion Date: December 2012
Primary Completion Date: December 2012 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
No Intervention: Control
No sperm selection
Experimental: Annexine V negative
Sperm selection with Annexine V protein
Other: Negative selection
Sperm selection to continue the treatment with healthy sperm


Ages Eligible for Study:   18 Years to 37 Years   (Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:


- >3million sperm after swimming process


  • < 37 YEARS OLD

Exclusion Criteria:

  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: NCT01265329

IVI Valencia
Valencia, Spain, 46015
Sponsors and Collaborators
Instituto Valenciano de Infertilidad, IVI VALENCIA
Principal Investigator: Nicolas Garrido, PhD IVI Valencia
  More Information

Responsible Party: Marcos Meseguer, Embryologist IVI Valencia, Instituto Valenciano de Infertilidad, IVI VALENCIA Identifier: NCT01265329     History of Changes
Other Study ID Numbers: 0810-C-051-MM
Study First Received: October 8, 2010
Last Updated: August 4, 2014 processed this record on September 21, 2017