U.S., Nov. 14 -- ClinicalTrials.gov registry received information related to the study (NCT07936526) titled 'Differences in FGF2 Levels by Sperm Retrieval Success in Non-Obstructive Azoospermia' on Oct. 22.

Brief Summary: The goal of this observational study is to determine whether fibroblast growth factor 2 (FGF2) expression in testicular tissue differs between men with non-obstructive azoospermia (NOA) who have successful and unsuccessful sperm retrieval during microdissection testicular sperm extraction (micro-TESE).

The main questions it aims to answer are:

1. Does FGF2 expression differ between participants with and without successful sperm retrieval?

2. Is FGF2 expression associated with lower levels of follicle-stimulating hormon...