MY-T study: Symptom-based titration decisions when using testosterone nasal gel, Natesto®

madman

Super Moderator
Abstract

Introduction: Natesto®, testosterone nasal gel (TNG), is a testosterone therapy (TTh) indicated for adult male hypogonadism.1 This study allowed titration decisions to be based on physicians’ assessment of patient symptoms.

Methods: Hypogonadal males on active topical testosterone therapy (TThE) or naive to any form of testosterone therapy (TThN) were treated with 22 mg TNG daily (11 mg twice daily) for 90 days. Titration was determined by the physician at Day 90 wherein the dose was increased to 33 mg daily if symptoms were not properly managed. Total testosterone (TT) levels were collected at Day 90 and 120 and the quantitative Androgen Deficiency in the Aging Male (qADAM) symptom questionnaire was administered on Days 0, 30, 60, 90, and 120.

Results: At study endpoint, 77.0% of all patients were in the normal TT range. Mean qADAM scores increased from 30.8 at baseline to 35.5 (6.6) at Day 90. Physician assessments resulted in 37% patients being up-titrated for an additional 30 days, however, qADAM scores did not change significantly at the higher dose.

Conclusions: The majority of patients achieved the normal range of testosterone with TNG when physicians based their titration decision on an assessment of symptoms. Sexual function and energy-related symptoms were predictive of improvements resulting from treatment. These symptoms were the most relevant indicators for physicians in making decisions relating to titration.














Conclusion
Titration based on symptoms was successful in achieving normal levels of TT in 77% of patients. Statistically significant improvements in symptoms were observed for treatment naïve patients, as well as for patients switching from a topical form of testosterone. Interestingly, 63% of patients remained at the starting 22 mg dose, while 37% were up-titrated. Patients who would most likely benefit from an increased dose can be identified based on assessment of libido, energy and strength/endurance, which correlated well with testosterone level improvements and symptom reduction. Symptom-based titration facilitates titration decisions without increased risk to patients. Finally, a significant proportion of patients (61%) in the trial who were either initiated on or switched to TNG reportedly sought to continue treatment with TNG as a medication of choice after completion of the treatment phase, suggesting that overall treatment outcomes with TNG, as well as the requirement for repeat dosing, were acceptable to patients.
 
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BMI: mody masss index; ITT: intention to treat; SD: standard deviation; TThE: active topical testosterone therapy; TThN: naive to testosterone therapy.
 

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Scientific Reference

Lakshman KM, Kaplan B, Travison TG, Basaria S, Knapp PE, Singh AB, LaValley MP, Mazer NA, Bhasin S. The effects of injected testosterone dose and age on the conversion of testosterone to estradiol and dihydrotestosterone in young and older men. J Clin Endocrinol Metab. 2010 Aug;95(8):3955-64.

DOI: 10.1210/jc.2010-0102 | PMID: 20534765 | PMCID: PMC2913038

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