Testosterone recovery after androgen deprivation therapy in localised prostate cancer: Long-term data from two...

Area of Science:

• Oncology
• Endocrinology
• Urology

Background:

• Androgen deprivation therapy (ADT) is a cornerstone treatment for localized prostate cancer.
• Understanding testosterone recovery post-ADT is crucial for managing treatment side effects and long-term patient outcomes.

Purpose of the Study:

• To investigate the rate and time of testosterone (T) recovery in prostate cancer patients after radiotherapy plus varying durations of ADT (0, 6, 18, 36 months).

Main Methods:

• Analysis of serum testosterone levels in 1230 prostate cancer patients from two phase III trials.
• Comparison of T recovery rates based on baseline T levels and ADT duration using Chi-square or Fisher's exact tests.
• Multivariable logistic regression to identify predictors of normal T recovery.

Main Results:

• Testosterone recovery rates decreased significantly with longer ADT durations: 87.4% (0 months) vs. 43.2% (36 months).
• Median time to T recovery increased substantially with ADT duration, from 0.31 years (0 months) to 5.0 years (36 months).
• Normal baseline T and younger age were associated with faster T recovery, while longer ADT duration and older age were linked to lower recovery rates.

Conclusions:

• Testosterone recovery post-ADT is influenced by ADT duration, baseline hormonal status, age, and comorbidities.
• ADT duration is the most critical factor affecting T recovery.
• These findings aid clinicians and patients in assessing ADT risks and benefits.