IPEX syndrome

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IPEX syndrome
Classification and external resources
OMIM	304790
DiseasesDB	33417

IPEX (immunodysregulation polyendocrinopathy enteropathy X-linked syndrome) is a rare disease linked to the dysfunction of the transcriptional activator FoxP3.^[1]

It leads to the dysfunction of regulatory T-cells and the subsequent autoimmunity.^[2] The disorder manifests with psoriasiform or eczematous dermatitis, nail dystrophy, autoimmune endocrinopathies (overlapping with those seen in APECED syndrome), and autoimmune skin conditions such as alopecia universalis and bullous pemphigoid.^[2]

This autoimmunity is called IPEX and it is the attack from the body's own immune system against the body's own tissues and organs. Early age onset of this disease in males causes severe enlargement of the secondary lymphoid organs, insulin dependent diabetes, eczema, food allergies, and infections. There has been limited success in treating the syndrome by bone marrow transplantation.^[3]

[edit] See also

[edit] External links

GeneReview/NIH/UW entry on IPEX Syndrome

[edit] References

^ Yong PL, Russo P, Sullivan KE (May 2008). "Use of Sirolimus in IPEX and IPEX-Like Children". J. Clin. Immunol. 28 (5): 581. doi:10.1007/s10875-008-9196-1. PMID 18481161.
^ ^a ^b Rapini, Ronald P.; Bolognia, Jean L.; Jorizzo, Joseph L. (2007). Dermatology: 2-Volume Set. St. Louis: Mosby. pp. 72. ISBN 1-4160-2999-0.
^ Wildin RS, Smyk-Pearson S, Filipovich AH (2002 Aug). "Clinical and molecular features of the immunodysregulation, polyendocrinopathy, enteropathy, X linked (IPEX) syndrome". J Med Genet 39 (8): 537–45. PMC 1735203. PMID 12161590. http://jmg.bmj.com/cgi/content/abstract/39/8/537.

Sex linkage: X-linked disorders

X-linked recessive

Immune	Chronic granulomatous disease (CYBB) · Wiskott–Aldrich syndrome · X-linked severe combined immunodeficiency · X-linked agammaglobulinemia · Hyper-IgM syndrome type 1 · IPEX · X-linked lymphoproliferative disease · Properdin deficiency

Hematologic	Haemophilia A · Haemophilia B · X-linked sideroblastic anemia

Endocrine	Androgen insensitivity syndrome/Kennedy disease · KAL1 Kallmann syndrome · X-linked adrenal hypoplasia congenita

Metabolic	amino acid: Ornithine transcarbamylase deficiency · Oculocerebrorenal syndrome dyslipidemia: Adrenoleukodystrophy carbohydrate metabolism: Glucose-6-phosphate dehydrogenase deficiency · Pyruvate dehydrogenase deficiency · Danon disease/glycogen storage disease Type IIb lipid storage disorder: Fabry's disease mucopolysaccharidosis: Hunter syndrome purine-pyrimidine metabolism: Lesch–Nyhan syndrome mineral: Menkes disease/Occipital horn syndrome

Nervous system	X-Linked mental retardation: Coffin–Lowry syndrome · MASA syndrome · X-linked alpha thalassemia mental retardation syndrome · Siderius X-linked mental retardation syndrome eye disorders: Color blindness (red and green, but not blue) · Ocular albinism (1) · Norrie disease · Choroideremia other: Charcot–Marie–Tooth disease (CMTX2-3) · Pelizaeus–Merzbacher disease · SMAX2

Skin and related tissue	Dyskeratosis congenita · Hypohidrotic ectodermal dysplasia (EDA) · X-linked ichthyosis · X-linked endothelial corneal dystrophy

Neuromuscular	Becker's muscular dystrophy/Duchenne · Centronuclear myopathy (MTM1) · Conradi–Hünermann syndrome · Emery–Dreifuss muscular dystrophy 1

Urologic	Alport syndrome · Dent's disease · X-linked nephrogenic diabetes insipidus

Bone/tooth	AMELX Amelogenesis imperfecta

No primary system	Barth syndrome · McLeod syndrome · Smith-Fineman-Myers syndrome · Simpson–Golabi–Behmel syndrome · Mohr–Tranebjærg syndrome · Nasodigitoacoustic syndrome

X-linked dominant

X-linked hypophosphatemia · Focal dermal hypoplasia · Fragile X syndrome · Aicardi syndrome · Incontinentia pigmenti · Rett syndrome · CHILD syndrome · Lujan–Fryns syndrome · Orofaciodigital syndrome 1

v t e Genetic disorder, protein biosynthesis: Transcription factor/coregulator deficiencies

(1) Basic domains	1.2: Feingold syndrome · Saethre-Chotzen syndrome 1.3: Tietz syndrome

(2) Zinc finger DNA-binding domains	2.1 (Intracellular receptor): Thyroid hormone resistance · Androgen insensitivity syndrome (PAIS, MAIS, CAIS) · Kennedy's disease · PHA1AD pseudohypoaldosteronism · Estrogen insensitivity syndrome · X-linked adrenal hypoplasia congenita · MODY 1 · Familial partial lipodystrophy 3 · SF1 XY gonadal dysgenesis 2.2: Barakat syndrome · Tricho–rhino–phalangeal syndrome 2.3: Greig cephalopolysyndactyly syndrome/Pallister-Hall syndrome · Denys–Drash syndrome · Duane-radial ray syndrome · MODY 7 · MRX 89 · Townes–Brocks syndrome · Acrocallosal syndrome · Myotonic dystrophy 2 2.5: Autoimmune polyendocrine syndrome type 1

(3) Helix-turn-helix domains	3.1: ARX (Ohtahara syndrome, Lissencephaly X2) · HLXB9 (Currarino syndrome) · HOXD13 (SPD1 Synpolydactyly) · IPF1 (MODY 4) · LMX1B (Nail–patella syndrome) · MSX1 (Tooth and nail syndrome, OFC5) · PITX2 (Axenfeld syndrome 1) · POU4F3 (DFNA15) · POU3F4 (DFNX2) · ZEB1 (Posterior polymorphous corneal dystrophy 3, Fuchs' dystrophy 3) · ZEB2 (Mowat-Wilson syndrome) 3.2: PAX2 (Papillorenal syndrome) · PAX3 (Waardenburg syndrome 1&3) · PAX4 (MODY 9) · PAX6 (Gillespie syndrome, Coloboma of optic nerve) · PAX8 (Congenital hypothyroidism 2) · PAX9 (STHAG3) 3.3: FOXC1 (Axenfeld syndrome 3, Iridogoniodysgenesis, dominant type) · FOXC2 (Lymphedema–distichiasis syndrome) · FOXE1 (Bamforth–Lazarus syndrome) · FOXE3 (Anterior segment mesenchymal dysgenesis) · FOXF1 (ACD/MPV) · FOXI1 (Enlarged vestibular aqueduct) · FOXL2 (Premature ovarian failure 3) · FOXP3 (IPEX) 3.5: IRF6 (Van der Woude syndrome, Popliteal pterygium syndrome)

(4) β-Scaffold factors with minor groove contacts	4.2: Hyperimmunoglobulin E syndrome 4.3: Holt-Oram syndrome · Li-Fraumeni syndrome · Ulnar–mammary syndrome 4.7: Campomelic dysplasia · MODY 3 · MODY 5 · SF1 (SRY XY gonadal dysgenesis, Premature ovarian failure 7) · SOX10 (Waardenburg syndrome 4c, Yemenite deaf-blind hypopigmentation syndrome) 4.11: Cleidocranial dysostosis

(0) Other transcription factors	0.6: Kabuki syndrome

Ungrouped	TCF4 (Pitt-Hopkins syndrome) · ZFP57 (TNDM1) · TP63 (Rapp–Hodgkin syndrome/Hay–Wells syndrome/Ectrodactyly–ectodermal dysplasia–cleft syndrome 3/Limb–mammary syndrome/OFC8)

Transcription coregulators	coactivator: CREBBP (Rubinstein–Taybi syndrome) corepressor: HR (Atrichia with papular lesions)

see also transcription factors B structural (perx, skel, cili, mito, nucl, sclr) · DNA/RNA/protein synthesis (drep, trfc, tscr, tltn) · membrane (icha, slcr, atpa, abct, othr) · transduction (iter, csrc, itra), trfk

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IPEX syndrome

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