Klinefelter syndrome
Description
Klinefelter syndrome is a genetic condition where males have an extra X
Klinefelter syndrome increases the risk of testicular and breast cancers.
Also called 47,XXY syndrome.
Your trusted source for accurate cancer information
With support from readers like you, we can continue to provide the highest quality cancer information for over 100 types of cancer.
We’re here to ensure easy access to accurate cancer information for you and the millions of people who visit this website every year. But we can’t do it alone.
Every donation helps fund reliable cancer information, compassionate support services and the most promising research. Please give today because every contribution counts. Thank you.