Task: Answer Verification
Input (English): Question: Do tNF-α inhibitors impair sperm quality in males with ankylosing spondylitis after short-term or long-term treatment?
Answer: Sperm quality in patients with active AS and after receiving short- and long-term TNF-α blocker therapy is comparable to sperm quality in healthy controls. Our study confirms that the disease process of AS does not have a major impact on sperm quality and that treatment with anti-TNF has no negative impact on sperm quality even under long-term treatment.
Output (English): no