NCT04778033

Brief Summary

In this study the investigators will explore the effect of the BNT162b2 COVID-19 Vaccine on semen analysis parameters among 75 fertile men. Fertile men will be regarded as such if they previously successfully impregnated their partners without the use of artificial reproductive technology, or men who previously had a normal sperm analysis exam by WHO criteria (2010). Those recruited will supply a single sperm sample 1-2 months following the second dose of the vaccination. In addition, the participants will fill a brief questionnaire with information regarding their medical and reproductive history. The investigators will examine the macroscopic and microscopic properties of the semen samples and compare them to the WHO semen analysis reference range in an attempt to ascertain whether the vaccine influences sperm parameters.

Trial Health

43
At Risk

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Trial has exceeded expected completion date
Enrollment
75

participants targeted

Target at P50-P75 for all trials

Timeline
Completed

Started Feb 2021

Shorter than P25 for all trials

Geographic Reach
1 country

1 active site

Status
unknown

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

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Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

February 8, 2021

Completed
1 day until next milestone

Study Start

First participant enrolled

February 9, 2021

Completed
21 days until next milestone

First Posted

Study publicly available on registry

March 2, 2021

Completed
1 month until next milestone

Primary Completion

Last participant's last visit for primary outcome

April 10, 2021

Completed
21 days until next milestone

Study Completion

Last participant's last visit for all outcomes

May 1, 2021

Completed
Last Updated

March 2, 2021

Status Verified

February 1, 2021

Enrollment Period

2 months

First QC Date

February 8, 2021

Last Update Submit

February 27, 2021

Conditions

Outcome Measures

Primary Outcomes (10)

  • Sperm Concentration (10^6/ml)

    Semen concentration (10\^6/ml)

    1-2 months after the second COVID-19 vaccine

  • Sperm Motility (%)

    Sperm percentage with proper forward progression

    1-2 months after the second COVID-19 vaccine

  • White Blood Cells (10^6/ml) in Semen

    Amount of white blood cells (10\^6/ml) in semen

    1-2 months after the second COVID-19 vaccine

  • Sperm Morphology (%)

    Sperm morphology (%)

    1-2 months after the second COVID-19 vaccine

  • Sperm Vitality (%)

    Sperm vitality (%)

    1-2 months after the second COVID-19 vaccine

  • Semen Liquefaction (normal/abnormal)

    Macroscopic appearance - Semen liquefaction appearance

    1-2 months after the second COVID-19 vaccine

  • Semen Viscosity (normal/abnormal)

    Macroscopic appearance - Semen viscosity appearance

    1-2 months after the second COVID-19 vaccine

  • Semen Color

    Macroscopic appearance - Semen color appearance

    1-2 months after the second COVID-19 vaccine

  • Semen PH

    Semen PH

    1-2 months after the second COVID-19 vaccine

  • Semen Volume (ml)

    Semen Volume (ml)

    1-2 months after the second COVID-19 vaccine

Study Arms (1)

Vaccinated Men

Fertile men who were vaccinated with the BNT162b2 COVID-19 Vaccine

Other: Sperm collection

Interventions

Those recruited will supply a single sperm sample 1-2 months following the second dose of the vaccination. The sample will be analyzed for macroscopic and microscopic features in the IVF laboratory and will be discarded immediately afterwards.

Vaccinated Men

Eligibility Criteria

Age18 Years - 45 Years
Sexmale
Healthy VolunteersYes
Age GroupsAdult (18-64)
Sampling MethodNon-Probability Sample
Study Population

Fertile men 1-2 months following the second dose of BNT162b2 COVID-19 Vaccine

You may qualify if:

  • Previously impregnated their partner without the use of assisted reproduce technology, or previously had a normal sperm analysis exam by WHO 2010 criteria.
  • months following the second dose of BNT162b2 COVID-19 Vaccine.

You may not qualify if:

  • Known abnormal semen parameters.
  • Age above 45.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Sheba medical center

Ramat Gan, Israel

RECRUITING

Biospecimen

Retention: SAMPLES WITHOUT DNA

Semen

MeSH Terms

Conditions

COVID-19Infertility

Condition Hierarchy (Ancestors)

Pneumonia, ViralPneumoniaRespiratory Tract InfectionsInfectionsVirus DiseasesCoronavirus InfectionsCoronaviridae InfectionsNidovirales InfectionsRNA Virus InfectionsLung DiseasesRespiratory Tract DiseasesGenital DiseasesUrogenital Diseases

Central Study Contacts

Study Design

Study Type
observational
Observational Model
COHORT
Time Perspective
PROSPECTIVE
Sponsor Type
OTHER GOV
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Senior Gynecologist and Obstetrician

Study Record Dates

First Submitted

February 8, 2021

First Posted

March 2, 2021

Study Start

February 9, 2021

Primary Completion

April 10, 2021

Study Completion

May 1, 2021

Last Updated

March 2, 2021

Record last verified: 2021-02

Data Sharing

IPD Sharing
Will not share

Locations