Natesto Effects on Testosterone, Luteinizing Hormone, Follicle Stimulating Hormone and Semen Parameters

September 28, 2021 updated by: Ranjith Ramasamy, MD, University of Miami
Low testosterone affects more than 10% of men worldwide, with high incidence in the elderly.This will be a prospective case study. The investigators will identify men with hypogonadism in our clinic interested in Natesto for testosterone replacement therapy (TRT). Natesto is a relatively new form of testosterone replacement therapy that is delivered intranasal to men diagnosed with low testosterone. Current advantages to Natesto include ease of delivery and decreased risk of transference. Recently Natesto 4.5% (125 uL/nostril, 11.0mg testosterone/dose), three times a day (TID) dosing was shown to also increase serum testosterone while maintaining normal, though decreased, serum levels of Luteinizing Hormone (LH) and Follicle-Stimulating Hormone(FSH). 40 participants will be enrolled and receive treatment with Natesto.The study will identify men with confirmed hypogonadism (testosterone (T) <350 on 2 consecutive Testosterone samples collected greater than 1.5 hours apart between 6am and 10am with demonstrated symptoms of hypogonadism). Participants with a history of prostate cancer, testis cancer, azoospermia, or genetic cause of hypogonadism will be excluded.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

Low testosterone affects more than 10% of men worldwide, with high incidence in the elderly). While Natesto has been shown to have positive effects on Testosterone while maintaining LH and FSH, the impact on sperm count has not yet been proven.

Study Design and Duration of Treatment: Participants will take Natesto 11g intra nasally there times a day (TID) for 16 weeks (120 days) between serum and semen evaluations.

Subject Population: The study will identify men with confirmed hypogonadism (testosterone (T) <350 on 2 consecutive Testosterone samples collected greater than 1.5 hours apart between 6am and 10am with demonstrated symptoms of hypogonadism). Subjects with a history of prostate cancer, testis cancer, azoospermia, or genetic cause of hypogonadism will be excluded.

Number of subjects: 40 participants will be enrolled and receive treatment with Natesto.

Study Duration:Total participation in the study will be approximately 24-28 weeks.

Study Procedures: Participants will undergo a total of six study visits. At the first visit, subjects will undergo screening procedures which will include signing of the consent form, physical exam, assessment for inclusion and exclusion criteria, Sexual Health Inventory in Men (SHIM) and quality of life questionnaire, blood sample for clinical laboratory assessment, and a semen analysis. At visit 2, subjects will undergo a second semen analysis and blood analysis for T. After 12 weeks (90 days), Participants will return for a third visit for blood sample and semen analysis as well as safety monitoring. The Participants will also be given SHIM and quality of life questionnaires. This procedure will be repeated at week 24 to get a final blood and semen analysis.

Study Endpoints: The primary endpoint will be change in FSH, LH, Estradiol, T, and Semen Analysis after 12 weeks and 24 weeks of treatment with Natesto. The secondary endpoint will be monitoring for adverse events

Statistical Methods: Analyses will consist of summaries of the values and total change from baseline in each value (visit value versus baseline value) using descriptive statistics (sample size, mean, median, standard deviation, 95% confidence interval, minimum, and maximum). The change from baseline in each endpoint will compared using a two-sample t-test, or the Wilcoxon rank sum test if distributional assumptions are violated. The primary time point of interest for assessing hormone effects is the week 12 visit.

Study Type

Interventional

Enrollment (Actual)

60

Phase

  • Phase 4

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

  • United States
    • Florida
      • Miami, Florida, United States, 33136
        • University of Miami

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

18 years to 55 years (ADULT)

Accepts Healthy Volunteers

No

Genders Eligible for Study

Male

Description

Inclusion Criteria:

  • Voluntarily sign and date the study consent form(s) which have been approved by an Institutional Review Board (IRB). Written consent must be obtained prior to the initiation of any study procedures.
  • Male between 18 and 55 years of age, inclusive, with documented onset of hypogonadism prior to age 55.
  • Documented diagnosis of primary hypogonadism (congenital or acquired) or hypogonadotropic hypogonadism (congenital or acquired).
  • Serum total testosterone < 350 ng/dL based on 2 consecutive blood samples obtained at least 1.5 hours apart between 6:00 am and 10:00 am following an appropriate washout of current androgen replacement therapy.
  • Naïve to androgen replacement or has discontinued current treatment and completed a washout of 4 weeks following androgen treatment (excluding Testopel). Washout must be completed prior to collection of baseline serum testosterone samples to determine study eligibility.
  • Judged to be in good general health as determined by the principal investigator based upon the results of a medical history, physical examination, vital signs, laboratory profile and a 12-lead electrocardiogram (ECG).

Exclusion Criteria:

  • History of significant sensitivity or allergy to androgens, castor oil or product excipients.
  • Clinically significant findings in the prestudy examinations including abnormal breast examination requiring follow-up, abnormal ECG.
  • Abnormal prostate digital rectal examination (DRE) with palpable nodule(s) or International Prostate Symptoms Score (I-PSS) > 19 points.
  • Body mass index (BMI) ≥ 30 kg/m2.

  • Clinically significant abnormal laboratory value, in the opinion of the investigator, in serum chemistry, hematology, or urinalysis including but not limited to:

    1. Baseline hemoglobin < 11.5 g/dL or > 16 g/dL
    2. Hematocrit < 35% or > 54%
    3. Serum transaminases > 2.5 times upper limit of normal
    4. Serum bilirubin > 2.0 mg/dL
    5. Creatinine > 2.0 mg/dL f. Prostate-Specific Antigen (PSA) > 2 ng/mL
  • History of seizures or convulsions, including febrile, alcohol or drug withdrawal seizures.
  • History of any clinically significant illness, infection, or surgical procedure within 4 weeks prior to study drug administration.
  • History of stroke or myocardial infarction within the past 5 years.
  • History of, or current or suspected, prostate or breast cancer.
  • History of diagnosed, severe, untreated, obstructive sleep apnea.
  • History of abuse of alcohol or any drug substance in the opinion of the investigator within the previous 2 years.
  • Donation or loss of 550 mL or more blood volume (including plasmapheresis) or receipt of a transfusion of any blood product within 12 weeks prior to the start of treatment.
  • Inadequate venous access for collection of serial blood samples required for pharmacokinetic profiles.
  • Receipt of any investigational product within 4 weeks or within 5 half-lives prior to the start of treatment.
  • Inability to understand and provide written informed consent for the study.
  • Considered by the investigator or the sponsor-designated physician, for any reason, that the subject is an unsuitable candidate to receive Natesto.

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

  • Primary Purpose: TREATMENT
  • Allocation: NA
  • Interventional Model: SINGLE_GROUP
  • Masking: NONE

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
OTHER: Natesto
Participants in this group will receive Natesto for a 24 consecutive weeks treatment course.
Drug: Natesto
4.5% nasal testosterone. 11.0 mg testosterone administered per dose (2 pump actuations, 1 pump per nostril) applied intranasally three times a day.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Change in Testosterone Levels From Baseline to 27 Weeks
Time Frame: Baseline, 27 Weeks
Testosterone levels measured in ng/dL analyzed from peripheral venous puncture blood draw
Baseline, 27 Weeks
Change in Estradiol Levels From Baseline to 27 Weeks
Time Frame: Baseline, 27 Weeks
Estradiol levels measured in pg/mL analyzed from peripheral venous puncture blood draw
Baseline, 27 Weeks
Change in Gonadotropin Levels From Baseline to 27 Weeks
Time Frame: Baseline, 27 Weeks
Luteinizing Hormone (LH) and Follicle Stimulating Hormone (FSH) levels, both measured in mIU/mL analyzed from peripheral venous puncture blood draw
Baseline, 27 Weeks
Number of Participants With an Increase in SF-36 QOL Scores From Baseline
Time Frame: 27 Weeks
The number of participants with an increase of at least 1 point from their SF-36 QOL scores from baseline will be reported. Short Form-36 (SF-36) Quality of Life (QOL) questionnaire has a proprietary scoring system that ranges from 1-5 and each domain is individually assessed
27 Weeks
Change in Sperm Counts From Baseline to 27 Weeks
Time Frame: Baseline, 27 Weeks
Sperm count measured in million sperm/mL analyzed from semen sample
Baseline, 27 Weeks
Incidence of Adverse Events
Time Frame: 27 Weeks
Incidence of adverse events as assessed per treating physician
27 Weeks

Collaborators and Investigators

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

Sponsor

University of Miami

Collaborators

Acerus Pharmaceuticals Corporation

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

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 (ACTUAL)

October 27, 2017

Primary Completion (ACTUAL)

June 1, 2020

Study Completion (ACTUAL)

June 1, 2020

Study Registration Dates

First Submitted

June 22, 2017

First Submitted That Met QC Criteria

June 26, 2017

First Posted (ACTUAL)

June 29, 2017

Study Record Updates

Last Update Posted (ACTUAL)

October 19, 2021

Last Update Submitted That Met QC Criteria

September 28, 2021

Last Verified

September 1, 2021

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 20170462

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

Yes

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

No

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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