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IllnessGlycosylphosphatidylinositol biosynthesis defects, differential diagnosis

Summary

Short information

Differential diagnostic panel for Glycosylphosphatidylinositol biosynthesis defects comprising altogether 26 curated genes

ID
GP7685
Number of loci
Locus typeCount
Gen 8
Accredited laboratory test
Examined sequence length
0,0 kb (Core-/Core-canditate-Genes)
10,9 kb (Extended panel: incl. additional genes)
Analysis Duration
on request
Test material
  • EDTA-anticoagulated blood (3-5 ml)
Diagnostic indications

GP7685_DH

 

Loci

Gen

NameExon Length (bp)OMIM-GReferenz-Seq.Heredity
GPAA11878NM_003801.4AR
PGAP2765NM_001256240.2AR
PGAP3963NM_033419.5AR
PIGL759NM_004278.4AR
PIGO3270NM_032634.4AR
PIGV1482NM_017837.4AR
PIGW1515NM_178517.5AR
PIGY217NM_001042616.3AR

Informations about the disease

Clinical Comment

Defekte in der Biosynthese von Glycosylphosphatidylinositol sind die Ursache seltener genetischer Störungen, die durch Entwicklungsverzögerung/geistige Behinderung, Krampfanfälle, Dysmorphien und verschiedene angeborene Anomalien gekennzeichnet sind, die mit einer großen Palette weiterer Merkmale einhergehen, darunter Hypotonie, Hörverlust, erhöhte alkalische Phosphatase. Glycosylphosphatidylinositol fungiert als Anker zwischen Zellmembranen und Proteinen. Diese Proteine fungieren als Enzyme, Adhäsionsmoleküle, Komplementregulatoren oder Korezeptoren in Signalübertragungswegen. Biallelische Varianten, die an der Biosynthese der Glycosylphosphatidylinositol-verankerten Proteine beteiligt sind, sind für zahlreiche Störungen verantwortlich, darunter das Syndrom der multiplen angeborenen Anomalien-Hypotonie-Anfallsleiden, Hyperphosphatasie mit geistiger Behinderung/Mabry-Syndrom, Kolobom, angeborene Herzfehler, ichthyosiforme Dermatose, geistige Behinderung und Ohranomalien/Epilepsie-Syndrom; und frühinfantile epileptische Enzephalopathie-55.

Literatur: Wu et al. The Glycosylphosphatidylinositol biosynthesis pathway in human diseases. Orphanet J Rare Dis 15, 129 (2020); https://www.omim.org/entry/610293

 

Synonyms
  • Alias: Hyperkoagulabilitätssyndrom durch Glykosylphosphatidyl-Inositol-Mangel (PIGM, PIGW)
  • Alias: Mabry syndromes; Hyperphosphatasia + impaired intellectual development syndromes 1-6
  • CHIME syndrome (PIGL)
  • Developmental + epileptic encephalopathy 38 (ARV1)
  • Developmental + epileptic encephalopathy 55 (PIGP)
  • Developmental + epileptic encephalopathy 80 (PIGB)
  • Developmental + epileptic encephalopathy 95 (PIGS)
  • Developmental and epileptic encephalopathy 77 (PIGQ)
  • Glycosylphosphatidylinositol biosynthesis defect 11 (PIGW)
  • Glycosylphosphatidylinositol biosynthesis defect 15 (GPAA1)
  • Glycosylphosphatidylinositol biosynthesis defect 16 (PIGC)
  • Glycosylphosphatidylinositol biosynthesis defect 17 (PIGH)
  • Glycosylphosphatidylinositol deficiency (PIGM)
  • Hyperphosphatasia with mental retardation syndrome 1 (PIGV)
  • Hyperphosphatasia with mental retardation syndrome 2 (PIGO)
  • Hyperphosphatasia with mental retardation syndrome 3 (PGAP2)
  • Hyperphosphatasia with mental retardation syndrome 4 (PGAP3)
  • Hyperphosphatasia with mental retardation syndrome 5 (PIGW)
  • Hyperphosphatasia with mental retardation syndrome 6 (PIGY)
  • Mental retardation, AR 53 (PIGG)
  • Multiple congenital anomalies-hypotonia-seizures syndrome 1 (PIGN)
  • Multiple congenital anomalies-hypotonia-seizures syndrome 2 (PIGA)
  • Multiple congenital anomalies-hypotonia-seizures syndrome 3 (PIGT)
  • Neurodevelopmental disorder with brain anomalies, seizures + scoliosis (PIGU)
  • Neurodevelopmental disorder with dysmorphic features, spasticity + brain abnormalities (PGAP1)
  • Neurodevelopmental disorder with hypotonia + cerebellar atrophy, with/-out seizures (PIGK)
  • Onychodystrophy, osteodystrophy, impaired intellectual development, seizures syndrome (PIGF)
  • Paroxysmal nocturnal hemoglobinuria 2 (PIGT)
  • Paroxysmal nocturnal hemoglobinuria, somatic (PIGA)
Heredity, heredity patterns etc.
  • AR
OMIM-Ps
  • Multiple OMIM-Ps
ICD10 Code

Bioinformatics and clinical interpretation

No text defined