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Spasticity-ataxia-gait anomalies syndrome(SPAHGC)

MedGen UID:
905660
Concept ID:
C4225178
Disease or Syndrome
Synonym: Spasticity, childhood-onset, with hyperglycinemia
SNOMED CT: Childhood-onset spasticity with hyperglycinemia (773492007); Spasticity, ataxia, gait anomalies syndrome (773492007); Childhood-onset spasticity with variant non-ketotic hyperglycinemia (773492007)
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): GLRX5 (14q32.13)
 
Monarch Initiative: MONDO:0014803
OMIM®: 616859
Orphanet: ORPHA401866

Definition

Childhood-onset spasticity with hyperglycinemia is an autosomal recessive disorder characterized by onset of slowly progressive spasticity that results in impaired gait in the first decade of life. Imaging of the central nervous system shows leukodystrophy and/or lesions in the upper spinal cord. More variable features include visual defects and mild learning disabilities. Serum glycine is increased, but CSF glycine is only mildly increased or normal; serum lactate is normal. The disorder represents a form of 'variant' nonketotic hyperglycinemia and is distinct from classic nonketotic hyperglycinemia (NKH, or GCE; 605899), which is characterized by significantly increased CSF glycine. Several forms of 'variant' NKH, including SPAHGC, appear to result from defects of mitochondrial lipoate biosynthesis (summary by Baker et al., 2014). [from OMIM]

Clinical features

From HPO
Dysarthria
MedGen UID:
8510
Concept ID:
C0013362
Mental or Behavioral Dysfunction
Dysarthric speech is a general description referring to a neurological speech disorder characterized by poor articulation. Depending on the involved neurological structures, dysarthria may be further classified as spastic, flaccid, ataxic, hyperkinetic and hypokinetic, or mixed.
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.
Spastic diplegia
MedGen UID:
44181
Concept ID:
C0023882
Disease or Syndrome
Spasticity (neuromuscular hypertonia) primarily in the muscles of the legs, hips, and pelvis.
Spasticity
MedGen UID:
7753
Concept ID:
C0026838
Sign or Symptom
A motor disorder characterized by a velocity-dependent increase in tonic stretch reflexes with increased muscle tone, exaggerated (hyperexcitable) tendon reflexes.
Babinski sign
MedGen UID:
19708
Concept ID:
C0034935
Finding
Upturning of the big toe (and sometimes fanning of the other toes) in response to stimulation of the sole of the foot. If the Babinski sign is present it can indicate damage to the corticospinal tract.
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.
Hyperreflexia
MedGen UID:
57738
Concept ID:
C0151889
Finding
Hyperreflexia is the presence of hyperactive stretch reflexes of the muscles.
Abnormal pyramidal sign
MedGen UID:
68582
Concept ID:
C0234132
Sign or Symptom
Functional neurological abnormalities related to dysfunction of the pyramidal tract.
Hypoplasia of the corpus callosum
MedGen UID:
138005
Concept ID:
C0344482
Congenital Abnormality
Underdevelopment of the corpus callosum.
Gait disturbance
MedGen UID:
107895
Concept ID:
C0575081
Finding
The term gait disturbance can refer to any disruption of the ability to walk.
Increased CSF lactate
MedGen UID:
257904
Concept ID:
C1167918
Finding
Increased concentration of lactate in the cerebrospinal fluid.
Spastic ataxia
MedGen UID:
376528
Concept ID:
C1849156
Disease or Syndrome
Increased CSF glycine concentration
MedGen UID:
1691638
Concept ID:
C5139615
Finding
Abnormally increased levels of glycine in cerebrospinal fluid.
Hyperglycinemia
MedGen UID:
82817
Concept ID:
C0268559
Disease or Syndrome
An elevated concentration of glycine in the blood.
Increased circulating lactate concentration
MedGen UID:
332209
Concept ID:
C1836440
Finding
Abnormally increased level of blood lactate (2-hydroxypropanoic acid). Lactate is produced from pyruvate by lactate dehydrogenase during normal metabolism. The terms lactate and lactic acid are often used interchangeably but lactate (the component measured in blood) is strictly a weak base whereas lactic acid is the corresponding acid. Lactic acidosis is often used clinically to describe elevated lactate but should be reserved for cases where there is a corresponding acidosis (pH below 7.35).
Reduced tissue glycine cleavage enzyme activity
MedGen UID:
1863962
Concept ID:
C5937550
Finding
Concentration or activity of the glycine cleavage enzyme below the lower limit of normal. This enzyme can be measured in multiple tissues including leukocytes and cultured fibroblasts.
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.
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.
Strabismus
MedGen UID:
21337
Concept ID:
C0038379
Disease or Syndrome
A misalignment of the eyes so that the visual axes deviate from bifoveal fixation. The classification of strabismus may be based on a number of features including the relative position of the eyes, whether the deviation is latent or manifest, intermittent or constant, concomitant or otherwise and according to the age of onset and the relevance of any associated refractive error.
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.
Decreased activity of the pyruvate dehydrogenase complex
MedGen UID:
326605
Concept ID:
C1839888
Finding

Term Hierarchy

CClinical test,  RResearch test,  OOMIM,  GGeneReviews,  VClinVar  
  • CROGVSpasticity-ataxia-gait anomalies syndrome

Professional guidelines

PubMed

Brioude F, Kalish JM, Mussa A, Foster AC, Bliek J, Ferrero GB, Boonen SE, Cole T, Baker R, Bertoletti M, Cocchi G, Coze C, De Pellegrin M, Hussain K, Ibrahim A, Kilby MD, Krajewska-Walasek M, Kratz CP, Ladusans EJ, Lapunzina P, Le Bouc Y, Maas SM, Macdonald F, Õunap K, Peruzzi L, Rossignol S, Russo S, Shipster C, Skórka A, Tatton-Brown K, Tenorio J, Tortora C, Grønskov K, Netchine I, Hennekam RC, Prawitt D, Tümer Z, Eggermann T, Mackay DJG, Riccio A, Maher ER
Nat Rev Endocrinol 2018 Apr;14(4):229-249. Epub 2018 Jan 29 doi: 10.1038/nrendo.2017.166. PMID: 29377879Free PMC Article
McCrindle BW, Rowley AH, Newburger JW, Burns JC, Bolger AF, Gewitz M, Baker AL, Jackson MA, Takahashi M, Shah PB, Kobayashi T, Wu MH, Saji TT, Pahl E; American Heart Association Rheumatic Fever, Endocarditis, and Kawasaki Disease Committee of the Council on Cardiovascular Disease in the Young; Council on Cardiovascular and Stroke Nursing; Council on Cardiovascular Surgery and Anesthesia; and Council on Epidemiology and Prevention
Circulation 2017 Apr 25;135(17):e927-e999. Epub 2017 Mar 29 doi: 10.1161/CIR.0000000000000484. PMID: 28356445
Giammarco S, Chiusolo P, Piccirillo N, Di Giovanni A, Metafuni E, Laurenti L, Sica S, Pagano L
Expert Rev Hematol 2017 Feb;10(2):147-154. Epub 2016 Dec 26 doi: 10.1080/17474086.2017.1270754. PMID: 27967252

Recent clinical studies

Etiology

Valdebran M, Wine Lee L
Curr Opin Pediatr 2020 Aug;32(4):498-505. doi: 10.1097/MOP.0000000000000925. PMID: 32692048
Jacquinet A, Millar D, Lehman A
Am J Med Genet A 2016 Aug;170(8):2141-72. Epub 2016 Jun 8 doi: 10.1002/ajmg.a.37775. PMID: 27273803
Cereda A, Carey JC
Orphanet J Rare Dis 2012 Oct 23;7:81. doi: 10.1186/1750-1172-7-81. PMID: 23088440Free PMC Article
Steinlin M
Brain Dev 1998 Jun;20(4):199-208. doi: 10.1016/s0387-7604(98)00019-9. PMID: 9661964
Salonen R, Paavola P
J Med Genet 1998 Jun;35(6):497-501. doi: 10.1136/jmg.35.6.497. PMID: 9643292Free PMC Article

Diagnosis

Geenen KR, Patel S, Thiele EA
Dev Med Child Neurol 2021 Mar;63(3):259-262. Epub 2020 Oct 31 doi: 10.1111/dmcn.14723. PMID: 33135153
Valdebran M, Wine Lee L
Curr Opin Pediatr 2020 Aug;32(4):498-505. doi: 10.1097/MOP.0000000000000925. PMID: 32692048
Kunam VK, Velayudhan V, Chaudhry ZA, Bobinski M, Smoker WRK, Reede DL
Radiographics 2018 Jul-Aug;38(4):1201-1222. doi: 10.1148/rg.2018170178. PMID: 29995620
Wang JC, Nagy L, Demke JC
Facial Plast Surg Clin North Am 2016 Nov;24(4):531-543. doi: 10.1016/j.fsc.2016.06.008. PMID: 27712819
Cereda A, Carey JC
Orphanet J Rare Dis 2012 Oct 23;7:81. doi: 10.1186/1750-1172-7-81. PMID: 23088440Free PMC Article

Therapy

Tian P, Zou R, Wang L, Chen Y, Qian X, Zhao J, Zhang H, Qian L, Wang Q, Wang G, Chen W
J Adv Res 2023 Mar;45:117-125. Epub 2022 May 11 doi: 10.1016/j.jare.2022.05.003. PMID: 35618633Free PMC Article
Geenen KR, Patel S, Thiele EA
Dev Med Child Neurol 2021 Mar;63(3):259-262. Epub 2020 Oct 31 doi: 10.1111/dmcn.14723. PMID: 33135153
Soriano A, Soriano M, Espinosa G, Manna R, Emmi G, Cantarini L, Hernández-Rodríguez J
Front Immunol 2020;11:865. Epub 2020 Jun 3 doi: 10.3389/fimmu.2020.00865. PMID: 32655539Free PMC Article
Sawh-Martinez R, Steinbacher DM
Clin Plast Surg 2019 Apr;46(2):141-155. doi: 10.1016/j.cps.2018.11.009. PMID: 30851747
Rosenfield M
Ophthalmic Physiol Opt 2011 Sep;31(5):502-15. Epub 2011 Apr 12 doi: 10.1111/j.1475-1313.2011.00834.x. PMID: 21480937

Prognosis

Armand T, Schaefer E, Di Rocco F, Edery P, Collet C, Rossi M
Neurochirurgie 2019 Nov;65(5):196-201. Epub 2019 Oct 9 doi: 10.1016/j.neuchi.2019.10.003. PMID: 31605683
Kunam VK, Velayudhan V, Chaudhry ZA, Bobinski M, Smoker WRK, Reede DL
Radiographics 2018 Jul-Aug;38(4):1201-1222. doi: 10.1148/rg.2018170178. PMID: 29995620
Cereda A, Carey JC
Orphanet J Rare Dis 2012 Oct 23;7:81. doi: 10.1186/1750-1172-7-81. PMID: 23088440Free PMC Article
Marshall JD, Beck S, Maffei P, Naggert JK
Eur J Hum Genet 2007 Dec;15(12):1193-202. Epub 2007 Oct 17 doi: 10.1038/sj.ejhg.5201933. PMID: 17940554
D'Alton ME, Simpson LL
Semin Perinatol 1995 Oct;19(5):375-86. doi: 10.1016/s0146-0005(05)80015-1. PMID: 8821025

Clinical prediction guides

Bigley V, Cytlak U, Collin M
Semin Cell Dev Biol 2019 Feb;86:50-61. Epub 2018 Feb 23 doi: 10.1016/j.semcdb.2018.02.020. PMID: 29452225
Kattah JC
Stroke Vasc Neurol 2018 Dec;3(4):190-196. Epub 2018 Jun 23 doi: 10.1136/svn-2018-000160. PMID: 30637123Free PMC Article
Vanlerberghe C, Boutry N, Petit F
Clin Genet 2018 Jul;94(1):43-53. Epub 2018 Apr 11 doi: 10.1111/cge.13209. PMID: 29322497
Jacquinet A, Millar D, Lehman A
Am J Med Genet A 2016 Aug;170(8):2141-72. Epub 2016 Jun 8 doi: 10.1002/ajmg.a.37775. PMID: 27273803
Takahashi Y, Fukusato T
World J Gastroenterol 2014 Nov 14;20(42):15539-48. doi: 10.3748/wjg.v20.i42.15539. PMID: 25400438Free PMC Article

Recent systematic reviews

Maghfour J, Ly S, Haidari W, Taylor SL, Feldman SR
J Dermatolog Treat 2022 May;33(3):1231-1242. Epub 2020 Sep 14 doi: 10.1080/09546634.2020.1818678. PMID: 32886029
Antonini L, Le Mauff B, Marcelli C, Aouba A, de Boysson H
Autoimmun Rev 2020 Sep;19(9):102612. Epub 2020 Jul 12 doi: 10.1016/j.autrev.2020.102612. PMID: 32668290
Payne LE, Gagnon DJ, Riker RR, Seder DB, Glisic EK, Morris JG, Fraser GL
Crit Care 2017 Nov 14;21(1):276. doi: 10.1186/s13054-017-1856-1. PMID: 29137682Free PMC Article
Society for Maternal-Fetal Medicine (SMFM), Norton ME, Chauhan SP, Dashe JS
Am J Obstet Gynecol 2015 Feb;212(2):127-39. Epub 2014 Dec 31 doi: 10.1016/j.ajog.2014.12.018. PMID: 25557883
Pilarski R, Burt R, Kohlman W, Pho L, Shannon KM, Swisher E
J Natl Cancer Inst 2013 Nov 6;105(21):1607-16. Epub 2013 Oct 17 doi: 10.1093/jnci/djt277. PMID: 24136893

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