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MOGS-congenital disorder of glycosylation(CDGIIb; CDG2B)

MedGen UID:
342954
Concept ID:
C1853736
Disease or Syndrome
Synonyms: CDG 2B; CDG IIb; Congenital disorder of glycosylation type 2B; Congenital disorder of glycosylation, type IIb; GLUCOSIDASE I DEFICIENCY; MOGS-CDG; MOGS-CDG (CDG-IIb)
SNOMED CT: Mannosyl-oligosaccharide glycosidase congenital disorder of glycosylation (725028009); Carbohydrate deficient glycoprotein syndrome type IIb (725028009); Congenital disorder of glycosylation type 2b (725028009); Congenital disorder of glycosylation type IIb (725028009); Glucosidase 1 deficiency (725028009); MOGS CDG - mannosyl-oligosaccharide glycosidase congenital disorder of glycosylation (725028009)
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): MOGS (2p13.1)
 
Monarch Initiative: MONDO:0011629
OMIM®: 606056
Orphanet: ORPHA79330

Definition

A form of congenital disorders of N-linked glycosylation characterized by generalized hypotonia, craniofacial dysmorphism (prominent occiput, short palpebral fissures, long eyelashes, broad nose, high arched palate, retrognathia), hypoplastic genitalia, seizures, feeding difficulties, hypoventilation, severe hypogammaglobulinemia with generalized edema and increased resistance to particular viral infections (particularly to enveloped viruses). The disease is caused by loss-of-function mutations in the gene MOGS (2p13.1). [from SNOMEDCT_US]

Clinical features

From HPO
Hypoplastic female external genitalia
MedGen UID:
868321
Concept ID:
C4022715
Anatomical Abnormality
Underdevelopment of part or all of the female external reproductive organs (which include the mons pubis, labia majora, labia minora, Bartholin glands, and clitoris).
Hand clenching
MedGen UID:
65994
Concept ID:
C0239815
Finding
An abnormal hand posture in which the hands are clenched to fists. All digits held completely flexed at the metacarpophalangeal and interphalangeal joints. In prenatal sonography of the fetal clenched hand, the index finger overlaps a clenched fist formed by the other digits. The proximal interphalangeal articulation of the index finger is flexed and ulnarly deviated, and the thumb is adducted.
Overlapping fingers
MedGen UID:
252954
Concept ID:
C1446712
Finding
A finger resting on the dorsal surface of an adjacent digit when the hand is at rest.
Hepatomegaly
MedGen UID:
42428
Concept ID:
C0019209
Finding
Abnormally increased size of the liver.
Feeding difficulties in infancy
MedGen UID:
436211
Concept ID:
C2674608
Finding
Impaired feeding performance of an infant as manifested by difficulties such as weak and ineffective sucking, brief bursts of sucking, and falling asleep during sucking. There may be difficulties with chewing or maintaining attention.
Sensorineural hearing impairment
MedGen UID:
9164
Concept ID:
C0018784
Disease or Syndrome
A type of hearing impairment in one or both ears related to an abnormal functionality of the cochlear nerve.
Seizure
MedGen UID:
20693
Concept ID:
C0036572
Sign or Symptom
A seizure is an intermittent abnormality of nervous system physiology characterised by a transient occurrence of signs and/or symptoms due to abnormal excessive or synchronous neuronal activity in the brain.
Cerebral atrophy
MedGen UID:
116012
Concept ID:
C0235946
Disease or Syndrome
Atrophy (wasting, decrease in size of cells or tissue) affecting the cerebrum.
Demyelinating peripheral neuropathy
MedGen UID:
82859
Concept ID:
C0270922
Disease or Syndrome
Demyelinating neuropathy is characterized by slow nerve conduction velocities with reduced amplitudes of sensory/motor nerve conduction and prolonged distal latencies.
Hypoplasia of the corpus callosum
MedGen UID:
138005
Concept ID:
C0344482
Congenital Abnormality
Underdevelopment 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.
EEG with burst suppression
MedGen UID:
369943
Concept ID:
C1969156
Finding
The burst suppression pattern in electroencephalography refers to a characteristic periodic pattern of low voltage (<10 microvolts) suppressed background and a relatively shorter pattern of higher amplitude slow, sharp, and spiking complexes.
Recurrent fractures
MedGen UID:
42094
Concept ID:
C0016655
Injury or Poisoning
The repeated occurrence of bone fractures (implying an abnormally increased tendency for fracture).
Hypotonia
MedGen UID:
10133
Concept ID:
C0026827
Finding
Hypotonia is an abnormally low muscle tone (the amount of tension or resistance to movement in a muscle). Even when relaxed, muscles have a continuous and passive partial contraction which provides some resistance to passive stretching. Hypotonia thus manifests as diminished resistance to passive stretching. Hypotonia is not the same as muscle weakness, although the two conditions can co-exist.
Retrognathia
MedGen UID:
19766
Concept ID:
C0035353
Congenital Abnormality
An abnormality in which the mandible is mislocalised posteriorly.
Prominent occiput
MedGen UID:
381255
Concept ID:
C1853737
Finding
Increased convexity of the occiput (posterior part of the skull).
Thoracic scoliosis
MedGen UID:
387910
Concept ID:
C1857790
Anatomical Abnormality
Generalized hypotonia
MedGen UID:
346841
Concept ID:
C1858120
Finding
Generalized muscular hypotonia (abnormally low muscle tone).
Hypoventilation
MedGen UID:
469022
Concept ID:
C3203358
Pathologic Function
A reduction in the amount of air transported into the pulmonary alveoli by breathing, leading to hypercapnia (increase in the partial pressure of carbon dioxide).
Decreased circulating IgA level
MedGen UID:
57934
Concept ID:
C0162538
Disease or Syndrome
Decreased levels of immunoglobulin A (IgA).
Decreased circulating antibody level
MedGen UID:
892481
Concept ID:
C4048270
Finding
An abnormally decreased level of immunoglobulin in blood.
Elevated circulating aspartate aminotransferase concentration
MedGen UID:
57497
Concept ID:
C0151904
Finding
An abnormally high concentration in the circulation of aspartate aminotransferase (AST).
Generalized edema
MedGen UID:
376817
Concept ID:
C1850534
Pathologic Function
Generalized abnormal accumulation of fluid beneath the skin, or in one or more cavities of the body.
Blepharophimosis
MedGen UID:
2670
Concept ID:
C0005744
Congenital Abnormality
A fixed reduction in the vertical distance between the upper and lower eyelids with short palpebral fissures.
High palate
MedGen UID:
66814
Concept ID:
C0240635
Congenital Abnormality
Height of the palate more than 2 SD above the mean (objective) or palatal height at the level of the first permanent molar more than twice the height of the teeth (subjective).
Short palpebral fissure
MedGen UID:
98067
Concept ID:
C0423112
Finding
Distance between the medial and lateral canthi is more than 2 SD below the mean for age (objective); or, apparently reduced length of the palpebral fissures.
Wide nose
MedGen UID:
140869
Concept ID:
C0426421
Finding
Interalar distance more than two standard deviations above the mean for age, i.e., an apparently increased width of the nasal base and alae.
Long eyelashes
MedGen UID:
342955
Concept ID:
C1853738
Finding
Mid upper eyelash length >10 mm or increased length of the eyelashes (subjective).
Optic atrophy
MedGen UID:
18180
Concept ID:
C0029124
Disease or Syndrome
Atrophy of the optic nerve. Optic atrophy results from the death of the retinal ganglion cell axons that comprise the optic nerve and manifesting as a pale optic nerve on fundoscopy.

Term Hierarchy

CClinical test,  RResearch test,  OOMIM,  GGeneReviews,  VClinVar  
Follow this link to review classifications for MOGS-congenital disorder of glycosylation in Orphanet.

Professional guidelines

PubMed

Mueller AL, Payandeh Z, Mohammadkhani N, Mubarak SMH, Zakeri A, Alagheband Bahrami A, Brockmueller A, Shakibaei M
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Engel AG, Shen XM, Selcen D, Sine SM
Lancet Neurol 2015 Apr;14(4):420-34. doi: 10.1016/S1474-4422(14)70201-7. PMID: 25792100Free PMC Article

Recent clinical studies

Etiology

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Altassan R, Péanne R, Jaeken J, Barone R, Bidet M, Borgel D, Brasil S, Cassiman D, Cechova A, Coman D, Corral J, Correia J, de la Morena-Barrio ME, de Lonlay P, Dos Reis V, Ferreira CR, Fiumara A, Francisco R, Freeze H, Funke S, Gardeitchik T, Gert M, Girad M, Giros M, Grünewald S, Hernández-Caselles T, Honzik T, Hutter M, Krasnewich D, Lam C, Lee J, Lefeber D, Marques-de-Silva D, Martinez AF, Moravej H, Õunap K, Pascoal C, Pascreau T, Patterson M, Quelhas D, Raymond K, Sarkhail P, Schiff M, Seroczyńska M, Serrano M, Seta N, Sykut-Cegielska J, Thiel C, Tort F, Vals MA, Videira P, Witters P, Zeevaert R, Morava E
J Inherit Metab Dis 2019 Jan;42(1):5-28. doi: 10.1002/jimd.12024. PMID: 30740725
Jaeken J, Péanne R
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Diagnosis

Qing L, Li Q, Dong Z
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Jaeken J, Péanne R
J Inherit Metab Dis 2017 Jul;40(4):569-586. Epub 2017 May 8 doi: 10.1007/s10545-017-0050-6. PMID: 28484880
Clerc F, Reiding KR, Jansen BC, Kammeijer GS, Bondt A, Wuhrer M
Glycoconj J 2016 Jun;33(3):309-43. Epub 2015 Nov 10 doi: 10.1007/s10719-015-9626-2. PMID: 26555091Free PMC Article
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Therapy

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Curr Opin Neurol 2020 Aug;33(4):534-542. doi: 10.1097/WCO.0000000000000837. PMID: 32657896
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Cancer Cell 2019 Jul 8;36(1):6-16. doi: 10.1016/j.ccell.2019.06.006. PMID: 31287993
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MAbs 2018 Jul;10(5):693-711. doi: 10.1080/19420862.2018.1466767. PMID: 29733746Free PMC Article
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Prognosis

Stanczak MA, Rodrigues Mantuano N, Kirchhammer N, Sanin DE, Jacob F, Coelho R, Everest-Dass AV, Wang J, Trefny MP, Monaco G, Bärenwaldt A, Gray MA, Petrone A, Kashyap AS, Glatz K, Kasenda B, Normington K, Broderick J, Peng L, Pearce OMT, Pearce EL, Bertozzi CR, Zippelius A, Läubli H
Sci Transl Med 2022 Nov 2;14(669):eabj1270. doi: 10.1126/scitranslmed.abj1270. PMID: 36322632Free PMC Article
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Bull Cancer 2022 Nov;109(11):1202-1216. Epub 2022 Sep 30 doi: 10.1016/j.bulcan.2022.08.001. PMID: 36184332
Mueller AL, Payandeh Z, Mohammadkhani N, Mubarak SMH, Zakeri A, Alagheband Bahrami A, Brockmueller A, Shakibaei M
Cells 2021 Nov 4;10(11) doi: 10.3390/cells10113017. PMID: 34831240Free PMC Article
Dotz V, Visconti A, Lomax-Browne HJ, Clerc F, Hipgrave Ederveen AL, Medjeral-Thomas NR, Cook HT, Pickering MC, Wuhrer M, Falchi M
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Clinical prediction guides

Golay J, Andrea AE, Cattaneo I
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Radovani B, Gudelj I
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Yang Q, Hughes TA, Kelkar A, Yu X, Cheng K, Park S, Huang WC, Lovell JF, Neelamegham S
Elife 2020 Oct 26;9 doi: 10.7554/eLife.61552. PMID: 33103998Free PMC Article

Recent systematic reviews

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Cochrane Database Syst Rev 2022 Apr 14;4(4):CD004714. doi: 10.1002/14651858.CD004714.pub4. PMID: 35420698Free PMC Article
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