Fragile X syndrome

Fragile X syndrome is also known by the following names:

• X-linked mental retardation and macroorchidism
• Martin-Bell syndrome
• fragile X mental retardation
• FRAXA syndrome
• fra(X) syndrome
• marker X syndrome
• Escalante's syndrome
• FXS

There are multiple names for fragile X syndrome, so it is important to make sure families and doctors are on the same page and using the same name. If a doctor is using an unfamiliar term, ask them if they are using a different name for fragile X syndrome. Another reliable source for alternative names for fragile X syndrome is the Genetics Home Reference website, which can be found at Genetics Home Reference Fragile X Synonyms.