MTHFS-related developmental…

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MTHFS-related developmental delay-microcephaly-short stature-epilepsy syndrome

ORPHA:597874Disease

What it is

A rare, genetic, neurometabolic disease characterized by microcephaly, short stature, epilepsy, cerebral hypomyelination, severe global developmental delay, and progressive spasticity. Macrocytic anemia and hyperthermia have also been reported in association. Brain imaging reveals delayed myelination with minimal progression over time, mild cerebellar atrophy and/or thin corpus callosum.

Key facts

Prevalence
<1 / 1 000 000
Age of onset
Antenatal, Infancy, Neonatal
Inheritance
Autosomal recessive
Classified as
Disease

Prevalence figures describe populations, not individuals, and are often estimates from a single study. Where the figure is an incidence or a birth prevalence, it says so.

Gene

MTHFSDisease-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

MONDO 0032705OMIM 618367UMLS C5193057

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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