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Hypomyelinating leukodystrophy 3(HLD3)

MedGen UID:
342403
Concept ID:
C1850053
Disease or Syndrome
Synonyms: HLD3; Perinatal Sudanophilic leukodystrophy
Modes of inheritance:
Autosomal recessive inheritance
MedGen UID:
141025
Concept ID:
C0441748
Intellectual Product
Source: Orphanet
A mode of inheritance that is observed for traits related to a gene encoded on one of the autosomes (i.e., the human chromosomes 1-22) in which a trait manifests in individuals with two pathogenic alleles, either homozygotes (two copies of the same mutant allele) or compound heterozygotes (whereby each copy of a gene has a distinct mutant allele).
 
Gene (location): AIMP1 (4q24)
 
Monarch Initiative: MONDO:0009843
OMIM®: 260600
Orphanet: ORPHA280293

Definition

Hypomyelinating leukodystrophy-3 (HLD3) is an autosomal recessive severe neurologic disorder characterized by early infantile onset of global developmental delay, lack of development, lack of speech acquisition, and peripheral spasticity associated with decreased myelination in the central nervous system (summary by Feinstein et al., 2010). The disorder is phenotypically similar to X-linked Pelizaeus-Merzbacher disease (PMD; 312080), which is caused by mutation in the PLP1 gene (300401). For a general phenotypic description and a discussion of genetic heterogeneity of HLD, see 312080. [from OMIM]

Clinical features

From HPO
Failure to thrive
MedGen UID:
746019
Concept ID:
C2315100
Disease or Syndrome
Failure to thrive (FTT) refers to a child whose physical growth is substantially below the norm.
Projectile vomiting
MedGen UID:
67442
Concept ID:
C0221151
Sign or Symptom
Vomiting that ejects the gastric contents with great force.
Schilder disease
MedGen UID:
3324
Concept ID:
C0007795
Disease or Syndrome
Schilder's disease is a progressive demyelinating disorder of the central nervous system.
Leukodystrophy
MedGen UID:
6070
Concept ID:
C0023520
Disease or Syndrome
Leukodystrophy refers to deterioration of white matter of the brain resulting from degeneration of myelin sheaths in the CNS. Their basic defect is directly related to the synthesis and maintenance of myelin membranes. Symmetric white matter involvement at MRI is a typical finding in patients with leukodystrophies.
Seizure
MedGen UID:
20693
Concept ID:
C0036572
Sign or Symptom
A seizure is an intermittent abnormality of nervous system physiology characterized by a transient occurrence of signs and/or symptoms due to abnormal excessive or synchronous neuronal activity in the brain.
Spastic paraparesis
MedGen UID:
52432
Concept ID:
C0037771
Sign or Symptom
Mild or moderate loss of motor function accompanied by spasticity in the lower extremities. This condition is a manifestation of CENTRAL NERVOUS SYSTEM DISEASES that cause injury to the motor cortex or descending motor pathways.
EEG abnormality
MedGen UID:
56235
Concept ID:
C0151611
Finding
Abnormality observed by electroencephalogram (EEG), which is used to record of the brain's spontaneous electrical activity from multiple electrodes placed on the scalp.
Pelizaeus-Merzbacher disease
MedGen UID:
61440
Concept ID:
C0205711
Disease or Syndrome
PLP1 disorders of central nervous system myelin formation include a range of phenotypes from Pelizaeus-Merzbacher disease (PMD) to spastic paraplegia 2 (SPG2). PMD typically manifests in infancy or early childhood with nystagmus, hypotonia, and cognitive impairment; the findings progress to severe spasticity and ataxia. Life span is shortened. SPG2 manifests as spastic paraparesis with or without CNS involvement and usually normal life span. Intrafamilial variation of phenotypes can be observed, but the signs are usually fairly consistent within families. Heterozygous females may manifest mild-to-moderate signs of the disease.
Abnormal pyramidal sign
MedGen UID:
68582
Concept ID:
C0234132
Sign or Symptom
Functional neurological abnormalities related to dysfunction of the pyramidal tract.
Global brain atrophy
MedGen UID:
66840
Concept ID:
C0241816
Pathologic Function
Unlocalized atrophy of the brain with decreased total brain matter volume and increased ventricular size.
Corpus callosum atrophy
MedGen UID:
96560
Concept ID:
C0431370
Finding
The presence of atrophy (wasting) of the corpus callosum.
Global developmental delay
MedGen UID:
107838
Concept ID:
C0557874
Finding
A delay in the achievement of motor or mental milestones in the domains of development of a child, including motor skills, speech and language, cognitive skills, and social and emotional skills. This term should only be used to describe children younger than five years of age.
Absent speech
MedGen UID:
340737
Concept ID:
C1854882
Finding
Complete lack of development of speech and language abilities.
Appendicular spasticity
MedGen UID:
937224
Concept ID:
C4313257
Finding
A type of spasticity that affects one or more limbs (arms or legs).
Joint contracture
MedGen UID:
3228
Concept ID:
C0009918
Anatomical Abnormality
A limitation in the passive range of motion of a joint resulting from loss of elasticity in the periarticular tissues owing to structural changes of non-bony tissues, such as muscles, tendons, ligaments, joint capsules or skin. A contracture prevents movement of the associated body part.
Kyphoscoliosis
MedGen UID:
154361
Concept ID:
C0575158
Anatomical Abnormality
An abnormal curvature of the spine in both a coronal (lateral) and sagittal (back-to-front) plane.
Axial hypotonia
MedGen UID:
342959
Concept ID:
C1853743
Finding
Muscular hypotonia (abnormally low muscle tone) affecting the musculature of the trunk.
Lower limb amyotrophy
MedGen UID:
870475
Concept ID:
C4024921
Finding
Muscular atrophy affecting the lower limb.
Microcephaly
MedGen UID:
1644158
Concept ID:
C4551563
Finding
Head circumference below 2 standard deviations below the mean for age and gender.
Coarse facial features
MedGen UID:
335284
Concept ID:
C1845847
Finding
Absence of fine and sharp appearance of brows, nose, lips, mouth, and chin, usually because of rounded and heavy features or thickened skin with or without thickening of subcutaneous and bony tissues.
Premature birth
MedGen UID:
57721
Concept ID:
C0151526
Pathologic Function
The birth of a baby of less than 37 weeks of gestational age.
Exotropia
MedGen UID:
4613
Concept ID:
C0015310
Disease or Syndrome
A form of strabismus with one or both eyes deviated outward.
Nystagmus
MedGen UID:
45166
Concept ID:
C0028738
Disease or Syndrome
Rhythmic, involuntary oscillations of one or both eyes related to abnormality in fixation, conjugate gaze, or vestibular mechanisms.
Visual impairment
MedGen UID:
777085
Concept ID:
C3665347
Finding
Visual impairment (or vision impairment) is vision loss (of a person) to such a degree as to qualify as an additional support need through a significant limitation of visual capability resulting from either disease, trauma, or congenital or degenerative conditions that cannot be corrected by conventional means, such as refractive correction, medication, or surgery.
Slow pupillary light response
MedGen UID:
868184
Concept ID:
C4022576
Finding
Reduced velocity and acceleration in the pupillary light response.

Term Hierarchy

CClinical test,  RResearch test,  OOMIM,  GGeneReviews,  VClinVar  
  • CROGVHypomyelinating leukodystrophy 3
Follow this link to review classifications for Hypomyelinating leukodystrophy 3 in Orphanet.

Recent clinical studies

Etiology

Bernard G, Chouery E, Putorti ML, Tétreault M, Takanohashi A, Carosso G, Clément I, Boespflug-Tanguy O, Rodriguez D, Delague V, Abou Ghoch J, Jalkh N, Dorboz I, Fribourg S, Teichmann M, Megarbane A, Schiffmann R, Vanderver A, Brais B
Am J Hum Genet 2011 Sep 9;89(3):415-23. doi: 10.1016/j.ajhg.2011.07.014. PMID: 21855841Free PMC Article

Diagnosis

Accogli A, Russell L, Sébire G, Rivière JB, St-Onge J, Addour-Boudrahem N, Laporte AD, Rouleau GA, Saint-Martin C, Srour M
Neurogenetics 2019 May;20(2):103-108. Epub 2019 Mar 28 doi: 10.1007/s10048-019-00572-7. PMID: 30924036
Bernard G, Chouery E, Putorti ML, Tétreault M, Takanohashi A, Carosso G, Clément I, Boespflug-Tanguy O, Rodriguez D, Delague V, Abou Ghoch J, Jalkh N, Dorboz I, Fribourg S, Teichmann M, Megarbane A, Schiffmann R, Vanderver A, Brais B
Am J Hum Genet 2011 Sep 9;89(3):415-23. doi: 10.1016/j.ajhg.2011.07.014. PMID: 21855841Free PMC Article

Prognosis

Accogli A, Russell L, Sébire G, Rivière JB, St-Onge J, Addour-Boudrahem N, Laporte AD, Rouleau GA, Saint-Martin C, Srour M
Neurogenetics 2019 May;20(2):103-108. Epub 2019 Mar 28 doi: 10.1007/s10048-019-00572-7. PMID: 30924036
Bernard G, Chouery E, Putorti ML, Tétreault M, Takanohashi A, Carosso G, Clément I, Boespflug-Tanguy O, Rodriguez D, Delague V, Abou Ghoch J, Jalkh N, Dorboz I, Fribourg S, Teichmann M, Megarbane A, Schiffmann R, Vanderver A, Brais B
Am J Hum Genet 2011 Sep 9;89(3):415-23. doi: 10.1016/j.ajhg.2011.07.014. PMID: 21855841Free PMC Article

Clinical prediction guides

Bernard G, Chouery E, Putorti ML, Tétreault M, Takanohashi A, Carosso G, Clément I, Boespflug-Tanguy O, Rodriguez D, Delague V, Abou Ghoch J, Jalkh N, Dorboz I, Fribourg S, Teichmann M, Megarbane A, Schiffmann R, Vanderver A, Brais B
Am J Hum Genet 2011 Sep 9;89(3):415-23. doi: 10.1016/j.ajhg.2011.07.014. PMID: 21855841Free PMC Article

Supplemental Content

Table of contents

    Clinical resources

    Practice guidelines

    • PubMed
      See practice and clinical guidelines in PubMed. The search results may include broader topics and may not capture all published guidelines. See the FAQ for details.

    Curated

    • AAP, 2021
      Leukodystrophies in Children: Diagnosis, Care, and Treatment, Pediatrics (2021) 148 (3): e2021053126.

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