Klinefelter syndrome is a genetic condition in which males have an extra X chromosome, which usually leads to small testes, low testosterone, fertility challenges, and a broad spectrum of other symptoms. Testosterone replacement therapy and fertility treatments can reduce its impact.
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Joy Tanaka, PhD
Medical Reviewer
Joy Tanaka, PhD, specializes in clinical molecular genetics. She is dedicated to integrating excellent clinical care with cutting-edge medical research for patients with rare and u...
Anna C. E. Hurst, MD, is a medical geneticist with board certification in clinical genetics and pediatrics. She is an associate professor in the department of genetics at Universit...
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