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Category: About XLH

What is XLH?

X-linked hypophosphatemia (XLH) is a rare condition, so it’s possible you've not heard of it before. Find out about XLH on this website, starting here.

Causes of XLH

A simple genetic change on the X-chromosome causes your body to produce too much fibroblast growth factor 23 (FGF23) – a hormone involved in phosphate control.

Why genes matter

XLH can happen spontaneously but, if it runs in your family, this section helps to explain how it's passed on from parent to child.

Diagnosis

Diagnosis of XLH usually happens in childhood, but can happen in infancy and adulthood too. Here's what to expect.

Childhood XLH symptoms

If you or another family member has XLH, you’re likely to know which symptoms to look out for. However, if no one else in your family has XLH, it may be harder to spot.

Adult XLH symptoms

XLH symptoms vary from person to person. However, there are a number of symptoms to look out for that affect many adults with XLH.

Top 10 facts

Being diagnosed with XLH is the beginning of a journey. With the right knowledge and support many people learn to manage their condition without it managing them.

Diagnosis checklist

If you think your child might be affected by XLH it's worth finding out about possible signs and symptoms before talking to your healthcare team.

Disclaimer This information is for educational purposes only and is not intended to provide medical advice. Your healthcare professional should always be your primary source of medical advice for any health, diagnosis or treatment practices. The external links and information provided are not controlled by, endorsed by, or affiliated with Kyowa Kirin Asia Pacific Pte Ltd or any of its affiiates and we make no representation as to the completeness or accuracy of the information contained in these sites. You enter third party websites at your own risk and are subject to their terms and conditions. By accessing and using this website, you agree to our Terms of Use and Privacy Policy.

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Date of preparation: June 2020

KKAP/BUR/0120