Trisomy X
Synonyms: 47,XXX syndrome | Triple X syndrome | Triplo-X syndrome | XXX syndrome
Trisomy X is a sex chromosome anomaly with a variable phenotype caused by the presence of an extra X chromosome in females (47,XXX instead of 46,XX).
Data from Orphanet are used to provide information on a disease's name, synonym(s), and overview.
Reference: Access aggregated data from Orphanet at Orphadata.
Orphadata: Free access data from Orphanet. © INSERM 1999. Available on http://www.orphadata.org. Data version April 2024
Newly diagnosed with
Trisomy X?
Our RARE Concierge Services Guides are available to assist you by providing information, resources and connections as you navigate your rare disease journey.
Advocacy Organizations
AXYS
The mission of AXYS is to help individuals with one or more extra X and/or Y chromosomes and their families to lead fuller, more productive lives. The X and Y variations include the trisomies of 47,XXY (Klinefelter syndrome), 47,XYY, and 47,XXX (Trisomy X). Also included are the more rare 48- and 49-chromosome variations 48,XXYY, 48, XXXY and similar conditions.
Rare Chromosome Disorder Support Group – Unique
Providing support and information to anyone affected by a rare chromosome or gene disorder, their families and the professionals caring for them.
Syndromes Without A Name (SWAN) Australia
Provide information, support and advocacy to families caring for a child with an undiagnosed or rare genetic condition.
Clinical Trials
For a list of clinical trials in this disease area, please click here.