X-linked creatine transporter deficiency

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X-linked creatine transporter deficiency

ORPHA:52503Disease

Also called Creatine transporter deficiency · SLC6A8 deficiency

What it is

X-linked creatine transporter deficiency (CRTR-D) is a creatine deficiency syndrome characterized clinically by global developmental delay/ intellectual disability (DD/ID) with prominent speech/language delay, autistic behavior and seizures.

Key facts

Age of onset
Childhood, Infancy
Inheritance
Not applicable, X-linked recessive
Classified as
Disease

Signs and symptoms

These ranges are how often a sign appears across everyone diagnosed, not a prediction for one person — most people have some of these and not others. Orphanet also records findings that are specifically absent in this disease; those are in the data but not listed here.

Gene

SLC6A8Disease-causing germline mutation(s)

ICD-10 codes

E88.8filed under a broader ICD-10 category — shared with 91 other rare diseases

ICD-10 has no distinct code for most rare diseases, so many are filed under the nearest available one. A shared code identifies the group, not this disease — the ORPHAcode above is what identifies it.

Related health topics

Reached through the ICD-10 categories this disease is filed under, so these describe the broader group rather than this disease specifically.

Cross-references

GARD 1608MESH C535598MONDO 10305OMIM 300352UMLS C1845862

Orphadata Science: Free access data from Orphanet. © INSERM 1999. Data version 2026-06-23. Available under CC BY 4.0. This is a reference, not medical advice.

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