Use of Semen TEX101 to Improve Sperm Retrieval Rates for Men With Non-obstructive Azoospermia

NCT ID: NCT02851966

Last Updated: 2019-03-12

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

UNKNOWN

Clinical Phase

NA

Total Enrollment

200 participants

Study Classification

INTERVENTIONAL

Study Start Date

2016-02-29

Study Completion Date

2020-12-31

Brief Summary

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The investigators hypothesize that sperm production varies with time in men with no sperm in semen (non-obstructive azoospermia, NOA) and that the semen protein, TEX101, is able to monitor these changes. The investigators further hypothesize that TEX101 levels may be used to predict the optimum time for microsurgical testicular sperm extraction (mTESE) to provide the highest successful rates of sperm retrieval.

Detailed Description

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This is a non-randomized pilot study. All men with NOA, who may or may not consider having mTESE, will be approached to enter this study.

Recruited men will have a semen test performed at the initial visit (time 0) to measure semen TEX101 levels using an ELISA assay.

For men who are not considering a mTESE to retrieve sperm, the TEX101 semen levels will be measured monthly for three months to determine the variability of semen TEX101.

For men who are considering a mTESE in an attempt to retrieve sperm, the mTESE procedure to retrieve sperm will be booked. If the level of TEX101 is detectable at time 0, then the men will have semen testing monthly. If the TEX101 is persistently detectable then the men will have surgery at the time originally scheduled. If the TEX101 drops on any subsequent test to be undetectable, then the semen testing for TEX101 will continue monthly for a maximum of 3 additional months. If the TEX101 remains undetectable for all tests, the men will have the mTESE at the end of the additional 3 months. If the TEX101 is detectable on a subsequent test, then the men will undergo an immediate mTESE (\< 2 weeks).

If the initial TEX101 is undetectable, then the men will have monthly semen testing for TEX101 for a maximum of 3 additional tests. If the TEX101 remains persistently undetectable, then a mTESE will be performed as originally booked. If the TEX101 is detected on a subsequent test, then an immediate mTESE (\< 2 weeks) is performed.

Conditions

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Non-obstructive Azoospermia

Study Design

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Allocation Method

NA

Intervention Model

SINGLE_GROUP

Primary Study Purpose

BASIC_SCIENCE

Blinding Strategy

NONE

Study Groups

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TEX101

This is a single arm study. All patients will be asked to provide multiple semen samples and all samples will be tested with TEX101 ELISA assay. Timing of mTESE maybe changed according to the assay results.

Group Type OTHER

mTESE

Intervention Type PROCEDURE

mTESE time may be postponed or advanced.

Interventions

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mTESE

mTESE time may be postponed or advanced.

Intervention Type PROCEDURE

Eligibility Criteria

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Inclusion Criteria

* Diagnosed with NOA by standard clinical means with a minimum of 2 semen tests confirming that the man is azoospermic
* Ability to understand the study and consent
* Ability to deliver semen samples

Exclusion Criteria

* Men do not have NOA
* Cannot understand the study and consent
* Cannot provide semen samples
Minimum Eligible Age

18 Years

Eligible Sex

MALE

Accepts Healthy Volunteers

No

Sponsors

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Canadian Institutes of Health Research (CIHR)

OTHER_GOV

Sponsor Role collaborator

Weill Medical College of Cornell University

OTHER

Sponsor Role collaborator

McGill University

OTHER

Sponsor Role collaborator

University of California, San Francisco

OTHER

Sponsor Role collaborator

The Physicians' Services Incorporated Foundation

OTHER

Sponsor Role collaborator

Mount Sinai Hospital, Canada

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Keith Jarvi, MD

Role: PRINCIPAL_INVESTIGATOR

Mount Sinai Hospital, Canada

Locations

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University of California, San Francisco

San Francisco, California, United States

Site Status

Weill Cornell Medical College

New York, New York, United States

Site Status

St. Mary's Hospital

Montreal, Quebec, Canada

Site Status

Countries

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United States Canada

Other Identifiers

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CAN-TEX-P1

Identifier Type: -

Identifier Source: org_study_id

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