Will Selective Androgen Receptor Modulators Ever Reach The Clinic?

Area of Science:

• Pharmacology and Endocrinology
• Biochemistry of Androgen Receptor Modulation

Background:

• Selective androgen receptor modulators (SARMs) are designed for anabolic effects with reduced androgenicity.
• SARMs offer potential therapeutic applications for muscle wasting, osteoporosis, hypogonadism, and frailty due to tissue selectivity and oral availability.

Purpose of the Study:

• To review the chemical basis, clinical potential, and regulatory hurdles of SARMs.
• To assess the current status of SARMs in clinical development for aging-related conditions.

Main Methods:

• Literature review of SARM chemistry, preclinical data, and clinical trial outcomes.
• Analysis of efficacy in increasing lean body mass and functional parameters.
• Evaluation of safety profiles, including hepatotoxicity and cardiovascular risks.

Main Results:

• SARMs effectively increase lean body mass in clinical trials.
• Consistent improvements in functional outcomes (strength, mobility) are limited.
• Significant safety concerns, including hepatotoxicity and cardiovascular risks, persist.

Conclusions:

• SARMs show potential for niche applications in aging populations, the frail, and those with lean mass loss.
• Widespread regulatory approval requires further trials demonstrating both efficacy and long-term safety.
• Ongoing research focuses on SARMs for sarcopenia and age-related muscle decline.