ERectile Dysfunctions, gOnadotoxicity and Sexual Health Assessment in Men With Lung Cancer

This study looks at how lung cancer and its treatments affect sexual health and hormone function in men. Researchers want to understand if treatments for advanced non-small cell lung cancer (NSCLC) cause problems like erectile dysfunction or changes in hormone levels — and how often these issues occur — so that doctors can better support male patients going through treatment. **You may be eligible if...** - You have been diagnosed with advanced or metastatic non-small cell lung cancer (NSCLC) - You are a man aged 18 to 75 - You were sexually active in the 30 days before starting treatment - You are starting active cancer treatment - You are in reasonably good health (ECOG 0-1) **You may NOT be eligible if...** - You have a history of hormone disorders (other than controlled thyroid disease) - You take medications known to affect sexual function (such as opioids, antidepressants, beta-blockers, or certain diuretics) - You have conditions that make sexual activity impossible (such as spinal cord compression or serious nerve issues) - You have a major psychological disorder that would interfere with the study - You previously received chemotherapy that caused lasting damage to your reproductive system (such as cisplatin) Talk to your doctor to see if this trial is right for you.